Heather Tollander

Licensed Psychologist

Dr. Tollander takes a personal approach with each client to assess and meet their individual needs and emphasizes the importance of the therapeutic relationship part of the healing process. Part of that includes helping clients find a balance between wholeheartedly accepting themselves and changing what they can. She takes an integrated approach to therapy that is informed by Dialectical Behavior Therapy, Internal Family Systems, Sensorimotor Psychotherapy, psychodynamic psychotherapy, as well as neurobiology. There are many ways to approach therapy and Dr. Tollander feels it is best to meet clients where they are in the healing process while remaining mindful of cultural or other differences. This could mean education about a recent diagnosis, practicing skills, or deep, long term healing from trauma. Regardless of the approach, she prioritizes trust and safety in her relationship with clients and feels having a sense of humor and curiosity are essential to the often serious nature of therapy. Dr. Tollander’s experience has given her the tools to work with a wide variety of clients and mental health concerns. In addition to ADHD, she has significant experience and specialized training to help people heal from complex trauma/PTSD and dissociative disorders like Dissociative Identity Disorder (DID). She is a member of the International Society for the Study of Trauma and Dissociation (ISSTD). She also has specialized experience and training to help clients with issues related to sexual orientation and gender identity including writing letters for gender affirming surgery. She identifies as Queer herself. Dr. Tollander received her doctorate (PsyD) and master’s degree in clinical psychology from Pacific University. She completed her internship and residency at Portland State University. She earned her bachelor’s degree in geography at the University of California at Berkeley. Dr. Tollander has been working with people who have ADHD since 2006 in many fun and exciting settings. They include Job Corps, a summer camp for children and teens with ADHD, and a wilderness therapy school for boys with ADHD.

Krispin Mayfield

Licensed Professional Counselor

Krispin works with couples who want to restore connection and learn new ways to handle challenges they navigate in their relationship and life together. When one or both partners have an ADHD diagnosis, it’s helpful to understand how specific challenges can contribute to cycles of disconnection from one another. He has completed Externship and Core Skills from the Portland EFT Center. He also works with individuals to better understand and manage ADHD symptoms, as well as depression, anxiety, the impacts of attachment trauma, and other mental health issues. He employs a variety of approaches to partner with clients to meet their goals, including emotionally focused therapy, skill-building, cognitive behavioral therapy, and motivational interviewing. He has been working in mental health over ten years and has been working at Northwest ADHD Treatment Center since early 2016. Krispin earned his BS at Multnomah University, and continued on there to graduate with his M.A. in counseling in 2012. He has been working in mental health for eight years, including completing his internship at Northwest Behavioral Healthcare Services, and supervised experience at Stark Mental Health Clinic in Minneapolis, MN. He was first licensed as a Licensed Professional Counselor in Minnesota in early 2014, and upon moving to Portland, was granted his license in Oregon in 2015.

Kristen Wellenbrock

Licensed Psychologist, Pediatric Clinical Director

Dr. Wellenbrock takes a positive and collaborative approach to therapy. She values teamwork between herself and her clients and aims to help solve problems, rather than “fix” people. She utilizes evidence-based and solution-focused practices with humor, flexibility, and a warm interpersonal approach that tailors the process to meet the unique needs of each person. She has experience providing assessment and therapy to children, adolescents, young adults, and families to address a wide-range of issues, including ADHD, school problems, depression, anxiety, parent-child problems, behavioral problems, and trauma. Dr. Wellenbrock received her Masters (M.A.) and Doctorate in Clinical Psychology (Psy.D.) from George Fox University in Newberg, OR. She completed her internship at Northeast Treatment Centers in Philadelphia, PA and her residency at Kaiser Permanente in San Jose, CA. Dr. Wellenbrock has worked in a variety of settings with children, adolescents, young adults, and families including, primary care, community mental health, school-based mental health, and college counseling. She became licensed to practice in Oregon in 2016.

Laura Hillmann

Licensed Psychologist

Dr. Laura Hillmann Psy.D. has worked with children and families for over 15 years. Her focus is on work with preschoolers through adolescence. She has an integrated approach with elements of Cognitive Behavioral Therapy, Object-Relations Play Therapy, and Parent Child Interaction Therapy. Her areas of specialty are: ADHD, anxiety, high functioning Autism Spectrum Disorder, depression, disruptive behavior problems, Oppositional Defiant Disorder, OCD, and trauma. She believes you need to meet the client where they are at, thus the need to adapt her approach for each individual. Dr. Laura studied at Baylor University in Waco, Texas where she earned both her master’s and doctorate in Clinical Psychology. She completed her internship at Family Service and Guidance Center in Topeka, KS and her post-doctoral residency at the University of Florida Department of Medical Psychology in Gainesville, FL. Dr. Laura has worked in a variety of settings including community mental health, medical, university counseling, residential treatment, and school-based. She has been licensed to practice psychology in Oregon since 2016.

Megan Demerich

Doctor of Nursing Practice, Psychiatric Mental Health Nurse Practitioner

Dr. Demerich believes in a holistic and collaborative approach to mental health care. She works together with clients and families to determine their needs and the direction of care. She knows that medications are only part of the treatment plan. They are most effective when combined with counseling, skills training, and healthy lifestyle choices, such as diet and exercise. Dr. Demerich has experience treating ADHD, anxiety disorders, depression and mood disorders in children, adolescents, and adults. She has worked as a psychiatric registered nurse and as a psychiatric nurse practitioner in the hospital setting. Dr. Demerich graduated cum laude with a Bachelor of Science in Psychology from the University of Florida. She also earned a Bachelor of Science in Nursing, a Master of Science in Nursing, and a Doctorate of Nursing Practice with a specialization in Psychiatric Mental Health Nursing from the University of Florida. Additionally, she was recognized by the University of Florida College of Nursing for academic excellence at the conclusion of her master’s degree education. Dr. Demerich is nationally accredited in psychiatric mental health nursing across the lifespan.

Jody Jenson

Psychiatric Mental Health Nurse Practitioner

I am a Board Certified Psychiatric Mental Health Nurse Practitioner specializing in the diagnosis and treatment of ADHD, Depression, Bi Polar Mood Disorder, as well as Anxiety Disorders. I provide personalized, trauma focused, evidence based mental health care based on collaboration with the patient to best meet their needs. My goal is to help patients find meaning in purpose in their lives to assist them to thrive and meet their individual goals. I obtained my Undergraduate Bachelor’s degree in Nursing in 2006 from Boise State University and my Graduate Nursing degree from Gonzaga University in 2012.

Kristen Leinung

Psychiatric Mental Health Nurse Practitioner

Kristen is a board certified Mental Health Nurse Practitioner. She received her BSN and MSN from Columbia University. She has practiced in outpatient mental health settings since 2013 and has experienced in treating a wide range of clinical conditions, but has always been particularly interested in ADHD. Her passion is treating children, adolescents, and young adults

Kimra Roundy

Licensed Psychologist

Dr. Kimra Roundy works collaboratively with clients to tailor treatment to fit their unique needs, values, and personal goals for growth, while focusing on creating a positive, safe, and warm environment built on trust and humor. Her clinical approach is holistic, integrative, and strengths based with an emphasis on sociocultural experience and intersectionality. Dr. Kimra Roundy utilizes person-centered therapies and concepts from the following theoretical approaches: Family Systems, Psychodynamic, Mindfulness, Cognitive Behavioral, Attachment, and Feminist. She works with children, couples, and families and is experienced in assessing, diagnosing, and treating a wide range of presenting issues, including; ADHD, trauma, anxiety and mood disorders, gender and LGBTQIQ concerns, adjustment due to disabilities or health related diagnoses, relational distress, grief/loss, life transitions, stress, and insomnia. Dr. Kimra Roundy earned her master’s (M.A.) and doctoral (Psy.D.) degrees in Clinical Psychology from the California School of Professional Psychology at Alliant International University in San Francisco, California. She completed her internship and post-doctoral training at Through the Looking Glass: The National Center for People with Disabilities and Their Families in Berkeley, California. Over 13 years of experience in the medical and mental health fields includes working in many settings with a variety of ages, including community mental health, school-based mental health, outpatient drug rehabilitation, and home-based settings. Dr. Kimra Roundy became a licensed psychologist in Oregon in 2020. She loves traveling, learning about new cultures and is lucky enough to have been to 33 countries and 35 states.

Rebecca Kinman

Clinical Social Work Associate

Rebecca believes that empowerment brings about lasting change and that therapy is a process of cooperation between client and practitioner. Therefore, she prefers to connect with clients on an authentic, human-to-human level where transparency and vulnerability lead to sustained, positive change. In therapy, Rebecca uses a strong intersectional lens to provide strengths-based, attachment-focused therapies that include Dialectical Behavior Therapy (DBT), Cognitive Behavior Therapy, (CBT) and psychodynamic approaches. Additionally, she acknowledges that a trauma-informed approach to mental health is ideal for optimal recovery and growth in these changing times. Rebecca obtained both her Bachelor of Science in Women, Gender and Sexuality and her Masters’ Degree in Clinical Social Work from Portland State University. Her studies focused on LGBTQIAA+ Seniors, Housing, Racial Equity, and Anti-oppressive clinical practices as a viable approach to mental health. Rebecca has experience working with adults with intellectual and developmental disabilities as well as with seniors, and she most recently provided counseling and resource management to students in higher education. As a strong advocate for marginalized populations, Rebecca is overjoyed to support the clientele at Northwest ADHD Center in the most genuine and equitable ways possible.

Jeff Whitaker

Psychiatric Mental Health Nurse Practitioner

Dr. Whitaker is a Board Certified Psychiatric Mental Health Nurse Practitioner specializing in the diagnosis and treatment of ADHD and Addiction Disorders. Diagnosing adults with cognition and concentration issues with ADHD where appropriate is a calling for him. Utilizing a holistic, multifaceted, team-based approach enables Dr. Whitaker to tailor therapies to the individual for maximal support and positive outcomes.

Maria Dragulin

Psychology Resident

Dr. Maria Dragulin views client’s through a lens of openness, curiosity, and empathy for their experiences. She utilizes culturally informed/evidence-based practices, and collaborates with client’s in order to determine realistic, helpful, and values-based goals. She believes that all her client’s are doing the best they can with the resources they have available, and that by increasing values-driven behaviors, one adds to the number of resources they have available. Dr. Dragulin emphasizes the importance of maintaining a balance of providing psychoeducation, humor, structure, and flexibility when working with clients. Dr. Dragulin’s deep passion for psychology developed early in life. She completed her Bachelor’s degree in psychology from Portland State University, and her Master of Science (MS) and doctoral degree (PhD) in clinical psychology at Pacific University. She has worked in a variety of both clinical and research settings. She has experience working with adolescent populations in residential settings, and has had the pleasure of providing outpatient therapy services to individuals across the life span including children, adolescents, adults, and older adults, experiencing a variety of presenting concerns such as ADHD, trauma-related disorders, ODD, mood disorders, anxiety disorders, personality disorders, mild cognitive impairment, and dementia. She has engaged in research investigating the effects of substance use on adolescent brain development, the relationships between trait mindfulness, inhibitory control, and adult ADHD, and with stroke patients. Outside of clinical settings, Dr. Dragulin is an avid painter, reader, arcade-goer, and foodie, who enjoys rock climbing, weight lifting, critiquing films, singing karaoke, and loving her life-partner and darling chiweenie

Teresa Jenson

Clinic Nurse

Erin Wulf

Administrative Assistant

Erin received her Bachelor of Arts from the University of Oregon, with a minor in Queer Studies. While at college, she volunteered with the board of the Eugene PFLAG, and has since volunteered with the Portland Q Center and The Ally Coalition, working toward safety and equality for everyone. This drive for helping people aligned perfectly with the opportunity to work in a mental health clinic. As the Nurses’ Administrative Assistant, Erin acts as a first point of contact between patients and the clinic’s Nurse Practitioners. She works to troubleshoot problems with pharmacies and insurance companies, and make sure patients are able to receive their medications.

Miriam Hozak

Administrative Assistant

Originally from North Carolina, Miriam Hozak joined Northwest ADHD Treatment Center in 2022. She received her Bachelors of Music from UNCSA with a major in flute performance. Miriam has a passion for helping others, and values every interaction with patients. In her free time, you can find Miriam cooking, playing her flute, or fossil hunting with her husband.

Meghan Polits

Licensed Psychologist

Dr. Polits has an integrated, holistic approach to therapy. She utilizes a variety of therapeutic approaches including cognitive behavioral therapy, as well as acceptance-based, motivational, and person-centered therapies. She believes that therapy is collaborative, and works with each client to tailor treatment to fit their unique needs, values, and personal goals for growth. Dr. Polits takes time to create a safe space and build a trusting therapeutic relationship with each client. She has experience diagnosing and treating a variety of presenting issues, including anxiety, mood disorders, trauma, adjustment, and ADHD. Dr. Polits received her Doctorate (Psy.D.) and Master's degree (M.A.) in Clinical Psychology from George Fox University. She has experience working in many settings with a variety of adults and adolescents, including primary care, school-based mental health, a VA medical center, and a hospital emergency setting.

Alyssa Nolde

Licensed Psychologist

Dr. Nolde has an integrated approach to therapy with an emphasis on acceptance and mindfulness-based techniques. She values the relationship between herself and the client and believes that the client is the expert on their own experience. She sees her role as helping the client move towards their goals in order to live a life they value. She has experience treating a variety of presenting issues, including anxiety, mood disorders, trauma, adjustment, ADHD, and learning disabilities. Dr. Nolde received her master’s degree (MS) and doctorate (PsyD) in clinical psychology from Pacific University. She has worked providing therapy and assessment services to adults in a variety of settings, including community mental health, primary care, college counseling, and a hospital emergency setting.

Sarah Banger

Psychiatric Mental Health Nurse Practitioner

Sarah is a board certified Psychiatric Mental Health Nurse Practitioner (PMHNP). She graduated with a Bachelor of Arts degree in Comparative Sociology, Anthropology from the University of Puget Sound in 2003. She graduated with a Bachelor of Science in Nursing degree and a Master of Nursing degree from Oregon Health & Science University (OHSU). She became a licensed registered nurse in 2006 and a licensed PMHNP in 2008. Sarah worked for Volunteers of America (VOA) Oregon from 2008 to 2019. She worked for their outpatient and residential programs that provide services for adults struggling with drug and alcohol addictions. Many of her clients were involved in the criminal justice system. Her primary role within VOA was to provide medication management services for individuals with mental health problems/psychiatric disorders. Her work with VOA illuminated how trauma and poverty can significantly impact an individual’s mental and physical health. Sarah has experience treating adults with PTSD, ADHD, anxiety disorders, mood disorders, depression and adjustment disorders. She strives to provide non-judgmental, client centered and trauma informed care. Sarah enjoys working with people over time to help them achieve their personal health goals and improve their overall health and sense of well being.

Aaron Nase

Counseling Associate

Kevin Janer

Licensed Psychologist

Dina Filoteo-Nichols

Psychiatric Mental Health Nurse Practitioner

Dina F. Nichols, PMHNP-BC Before you act, listen. Before you react, think. Before you criticize, wait. Before you pray, forgive. Before you quit, try. – E. Hemingway Dina F. Nichols started her nursing career as a Licensed Practical Nurse in 2009. She completed a Bachelor of Science in Nursing from Salem State University in Salem, MA in 2014 and continued with a Master of Science in Nursing and an Adult-Gerontology Nurse Practitioner Certification from Regis College, Weston, MA in 2017. In 2020, she chose to return to Regis College for a Post-Masters Certification in Psychiatric Mental Health.

Andrew Knowles

Psychologist Resident

Dr. Andrew Knowles is a generalist clinician who utilizes an integrated therapeutic approach grounded in Cognitive Behavioral Therapy. He views therapy as a collaborative process starting with helping clients identify their goals for treatment, the steps to meet those goals, and practical coping skills to reduce distress. He has experience assessing and treating individuals with a diverse range of diagnoses including ADHD, mood disorders, anxiety disorders, OCD, and trauma-related disorders; additionally, he is particularly interested in personality assessment and working with clients with personality disorder diagnoses. His clinical training involved providing therapy and assessment in community mental health, private practice, and residential care as well as forensic and research settings. Dr. Knowles completed his undergraduate studies at the University of Alabama (ROLL TIDE!) and after graduating, he worked with children and adolescents exhibiting emotional and behavioral disturbances before moving to Oregon to pursue graduate school. He received his master's (M.A.) and doctoral (PsyD) degrees in clinical psychology from Pacific University. He then completed his pre-doctoral internship with the Mental Health Center of Florida where he provided behavioral health services to older adults living in skilled nursing and assisted living facilities as well as conducted assessments for child dependency systems across the state of Florida. Outside of the clinic, he enjoys biking, watching TV, and spending time with his partner, dogs, and cat.

Katherine Kilkenny

Psychiatric Mental Health Nurse Practitioner, Doctor of Nursing Practice

My professional goal is to integrate mental health care into the community to increase access and improve health equity. With an interdisciplinary practice model, I hope to provide health services where people live, work, and socialize. Through experience and education I have gained the skills and knowledge I need as a nurse leader to empower individuals and communities to identify, act, and work towards health equity. Areas of focus include working with the LGBTQIA+ community as well as working with individuals who suffer from ADHD, trauma, depression, bipolar disorders, and psychosis She/her

Ava Hosseini

Psychiatric Mental Health Nurse Practitioner

Grace Floyd

Administrative Assistant

Grace received her Bachelor of Arts in Psychology and Minor in Special Education from the University of Oregon in December, 2018. With future goals of attending graduate school for Psychology, she is excited to have joined the team here at NW ADHD to begin her career in mental health. In her free time, Grace enjoys cooking, baking, and pottery.

Zoë Malzone

Administrative Assistant

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Daniel Moshofsky

Licensed Psychologist

Dr. Moshofsky believes therapy works best when it is not a “one size fits all” approach. He values the uniqueness of each person and works collaboratively with his clients to develop a plan that is both effective and reasonable. Dr. Moshofsky utilizes an integrated approach to therapy that helps clients build useful skills and effectively navigate their interpersonal relationships. He has received specialized training and experience working with clients to manage their ADHD and other mental health symptoms within an educational or work environment. In addition to ADHD, Dr. Moshofsky has experience providing therapy and assessment services for a wide variety of presenting concerns, including, amongst other things, depression and mood disorders, anxiety disorders, learning and cognitive disorders, interpersonal relationships, and trauma. Dr. Moshofsky received his Master’s and Doctorate (PsyD) degrees in Clinical Psychology from George Fox University in Newberg, Oregon.

Kate McDuffee

Psychiatric Mental Health Nurse Practitioner

Kate received her Master’s Degree in Nursing from Gonzaga University, specializing in Psychiatric Mental Health Nursing. She is a board certified Psychiatric Mental Health Nurse Practitioner in the state of Oregon.

Lindsay Heydenrych

Licensed Psychologist

Dr. Heydenrych knows that seeking help takes courage and making changes takes hard work. Her practice focuses on creating a foundation of respect and warmth, so clients feel safe and empowered to work towards a more genuine sense of sense and improved functioning. She works with clients where they are, honoring the human experience we all share, and collaboratively forms goals and treatment plans sensitive to each individual client and their already existing strengths. Her practice draws on Cognitive- Behavioral Therapy, Interpersonal, and Solution-focused therapies to address her clients goals. She has experience providing assessment and therapy to adults of all ages for a wide variety of issues, including ADHD, anxiety, mood disorders, learning disorders, life transitions, and grief, and she has a particular affinity for working with college students. She earned her Master's (M.S.) and Doctorate (Psy.D.) in Clinical Psychology from Pacific University, and completed her internship at the University of Idaho's Testing and Counseling Center. Her post-graduate residency was completed in a private practice setting and focused on assessment and treatment for adults with learning disorders and ADHD. She has been a licensed Psychologist in Oregon since 2010.

Sadie Bindl

Psychologist Resident

Ross Renfroe

Psychologist Resident

Ross Renfroe, PsyD, is a relationally-trained, generalist clinician with skills in evidence-based psychotherapies, psychological assessment, consultation, and mentorship. After initially receiving training in his home state of Texas to become a Licensed Professional Counselor (LPC), he transitioned to the Pacific Northwest with a passion for learning about psychological and neuropsychological assessment. Ross has experience working with underserved populations in community mental health clinics, private practice, general outpatient treatment centers, and university counseling centers. He earned his graduate degrees from the University of Texas at Tyler (M.A., Counseling Psychology) and George Fox University in Newberg, OR (M.A., Clinical Psychology and Psy.D, Clinical Psychology). He completed his pre-doctoral internship at the University of Idaho’s Counseling and Testing Center. Ross is passionate about assessment for neurodevelopmental issues, but also therapy work with individuals working through the common challenges of early adulthood. Particularly, he has extensive therapy experience in life-style adjustments, stress management, managing depressive and anxiety symptoms, grief, developmental trauma, and spirituality/faith issues. In his free time, he enjoys adventuring in the outdoors by hiking, running, or cycling with his wife, Cara.

Megan Florio

Counseling Associate

Megan Florio (she/her) LPC Associate, Registered Associate I am a mental health counselor who enjoys working with children, youth, and young adults. What drew me to counseling was the ability to help others to achieve their personal goals, inspire growth and change that builds resilience and improves quality of life and in relationships with others. My therapy style focuses on an integrative approach that draws from client-centered, Cognitive behavioral therapy and Solution-focused therapy. During sessions, together we can focus on increasing support when you are experiencing the worries of life, anxiety, attentional difficulties, and depressed mood. I also encourage you to focus on improving positive self-talk. Through this interactive relationship, I see us working collaboratively to put pieces together of a puzzle, and building skills for developing trusting and healthy relationships.

Natalie Williamsen

Clinical Social Work Associate

Natalie honors the privilege it is to be able to work alongside with clients as they’re reaching for change within their lives. She is careful when viewing challenges and considers all the influences that have shaped an individual’s story as she deeply values the worth inherent within each client. Natalie believes that no one knows themselves better than the client. Through this lens, she works collaboratively to meet clients where they are, and then support them through the change process to reach meaningful outcomes— ones that are important to each client. Natalie has worked with a variety of different populations including over 15 years with youth and their families. She’s experienced working with ADHD, anxiety, trauma, disability, grief and other mental health related concerns. In therapy, Natalie is trauma informed and makes use of: Cognitive Behavioral (CBT), Attachment, Systems, Interpersonal Neurobiology and Narrative therapies. She has received two degrees in Social Work: Bachelors from the University of Utah and Masters from Portland State University.

Aleigha Rude

Administrative Assistant

Aleigha joined our team in 2021 after receiving her Bachelor of Arts in Social Sciences from Washington State University. She has a passion for helping others and takes pride in advocating for our patients. Aleigha brings a positive energy everywhere she goes, and enjoys tackling all challenges that arise working in the mental health field. In her free time she loves being outdoors, tending to her plants, and spending time with all her pets.

Jules Hufford

Administrative Assistant

Jules received their Bachelor’s of Science in Psychology from Portland State University. With five years of experience in the mental health field, they have a passion for helping people get quality care and support and they are excited to be making a difference at Northwest ADHD Treatment Center. Jules hopes to pursue a career advocating for Queer and Trans youth in the future. In their free time, Jules enjoys playing guitar, spending time outdoors, reading, and analyzing Taylor Swift’s lyricism.

Danell Bjornson

Co-Owner, Psychiatric Mental Health Nurse Practitioner

For the past several years Danell has been treating adults and children with a variety of psychiatric issues in an outpatient mental health clinic. Over time she developed a specific interest in treating ADHD as many of her clients, regardless of age, profession, or educational background presented with problems concentrating. Much of her practice was spent learning how to screen for other causes of attention problems such as depression, anxiety, stress, and fatigue. When ADHD was truly the primary diagnosis, she collaborated with her clients to optimize treatment. Over time it became increasingly apparent to her that medication alone was rarely sufficient to treat all problematic symptoms of ADHD. She feels strongly that both children and adults have the best outcome when medications are paired with skills training, education, and individual therapy. A commitment to helping clients obtain a comprehensive evaluation, accurate diagnosis, and evidence-based care led her to co-found Northwest ADHD Treatment Center. Danell graduated magna cum laude with a Bachelor of Science in Psychology, University of Mary Washington and magna cum laude with a Bachelor of Science in Nursing, Oregon Health and Science University. She earned a Master of Nursing degree from Oregon Health and Science University. Danell is nationally accredited in adult and family psychiatric mental health.

Daniel Lennen

Co-Owner, Clinical Psychologist

Dr. Lennen has received specialized training focused on the treatment/assessment of symptoms related to ADHD. Training includes, among others, the OHSU Pediatric Neuropsychology Clinic and Child Development Clinic. Here, he focused on assessing and treating neurological disorders such as ADHD. In addition to training in hospital environments, Dr. Lennen has experience working with adults and students from Elementary School through College focused on developing strategies to improve academic, interpersonal, occupational, and one's overall functioning. Dr. Lennen values the unique strengths of individuals with this disorder, appreciating that often interacting with those diagnosed with ADHD is often very exciting and amusing. Working together with Dr. Lennen, your primary mental health clinician, you will benefit from clear and concise education about ADHD, evidenced-based treatment practices, and a lot of laughter through the treatment process. Dr. Lennen received his Doctorate in Clinical Psychology (PsyD) from George Fox University and his Master's of Counseling from Western Seminary. Dr. Lennen has experience working with children, adolescents, and adults from diverse backgrounds in a variety of outpatient settings including community mental health organizations, medical hospitals, and university counseling centers.

Tim Neary

Director of Clinical Services

Dr. Neary has been the clinical director at Northwest ADHD Treatment Center since 2016. His specialties include the assessment and treatment of ADHD, learning and cognitive disorders, anxiety, panic, fears, and depression. He has presented at conferences for The American Professional Society of ADHD and Related Disorders (APSARD) and Children and Adults with Attention Deficit/Hyperactivity Disorders (CHADD), and he has provided professional trainings and educational seminars related to assessment and intervention approaches for ADHD. Dr. Neary received his doctorate in clinical psychology (PsyD) as well as a master’s degree in clinical psychology (MS) from Indiana State University. Dr. Neary also completed a master’s degree program in Counseling Psychology (MA) at Pacific University. Overall, he has been working in the mental health field since 2007, in a variety of outpatient and inpatient settings. Dr. Neary works together with patients to develop an individualized approach that will help them to most effectively manage symptoms and to move toward becoming 'the best version of themselves.' Dr. Neary provides evidence-based treatment that incorporates cognitive-behavioral, developmental, and person-centered approaches.

Sean Whitehead

Operations Manager

Sean has lived in the Portland area since 2001 and has been helping clients connect with quality providers for over five years. He studied Theater, Psychology, and Art, at St. John’s University in Minnesota. He enjoys the outdoors, pop culture, and spending time with his family and friends.

Brad Hitchcock

Billing Manager

Sasha Daly

Billing Assistant

Elizabeth Kimberly

Client Services Coordinator

Elizabeth has lived in the Portland metro area since 2006. She earned a master's degree in clinical psychology from Minnesota State University, Mankato in 2005. Throughout her career she has worked in mental health case management and counseling and in higher education disability services providing supporting, counseling, and assisting students in higher education settings. She has a particular interest in working with those who experience ADHD and related conditions. Her interests include volunteering as a mediator, gardening, and spending time with friends and family.

Adilene Abarca-Roman

Billing Assistant

Molly Cunningham

Intake Coordinator

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