Clinicians

The clinical staff at Cornerstone Clinical Services, P.C. represent a unique collection of Christian clinicians licensed in psychology, psychiatry, psychiatric nursing and social work. All are committed to excellence of care in a warm and confidential setting.

BRENT D. BURSON, PSY.D. is a licensed Psychologist in Oregon. more...

BRENT D. BURSON, PSY.D. is a licensed Psychologist in Oregon. Dr. Burson specializes in marriage and family therapy and is a certified marriage and family therapist. He has been in private practice since 1981 and does individual, marital, and family therapy with adults and adolescents. In addition, Dr. Burson is experienced in the treatment of depression and anxiety disorders, grief, anger management, adult children of dysfunctional families, men’s issues, and marital/family problems.

RAYLENE DION, M.S.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. more...

RAYLENE DION, M.S.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. She has over 20 years of experience in nursing and is trained to provide medication management and individual psychotherapy for adults. Her areas of interest include depression, anxiety, grief, adjustment disorders co-dependency, and stress management.

MICHELLE C. GORDON-LOWN, PSY.D. is a licensed Psychologist in Oregon. more...

MICHELLE C. GORDON-LOWN, PSY.D. is a licensed psychologist in Oregon. Dr. Gordon-Lown has been in private practice since 2005 working with children, adolescents, and adults and families. Her areas of specialization encompass treatment of depression and anxiety disorders, grief, codependency, adult children of dysfunctional families, low self-esteem, survivors of abuse, relationship issues, and family problems.

DAWN HOFFMAN-GRAY, PSY.D. is a licensed Psychologist in Oregon. more...

DAWN HOFFMAN-GRAY, PSY.D. is a licensed Psychologist in Oregon. She has been in practice since 1993 in various community, private practice, educational and hospital settings. Dr. Hoffman-Gray specializes in psychotherapy for children and adults with behavior and mood disorders. She also provides parent training and psychological and educational evaluations for children and adults.

BROOKE KUHNHAUSEN, Ph.D. is a licensed psychologist in Oregon. more...

BROOKE KUHNHAUSEN, Ph.D. is a licensed psychologist in Oregon. She has worked in university and community settings and teaches and supervises in the graduate program of counseling at George Fox. Dr. Kuhnhausen works with adults and young adults in individual therapy. Her areas of specialization include depression and anxiety disorders, grief, women’s issues, identity development, post-trauma recovery, family-of-origin issues, low self-esteem, relationship issues, adult children of dysfunctional families, and spiritual development/faith-based counseling.

CONNIE C. LEBEN, M.S.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. more...

CONNIE C. LEBEN, M.S.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. She provides medication management and individual psychotherapy for ages 16 and older. Ms. Leben’s practice focuses on the treatment of anxiety, depression, bipolar disorder, attention deficit disorders and addiction.

AARON W. LEWIS, Psy.D. is a licensed psychologist in Oregon and Vermont. more...

AARON W. LEWIS, Psy.D. is a licensed psychologist in Oregon and Vermont. He has provided outpatient services in university and community settings. Dr. Lewis works with children, adolescents, and adults in individual therapy. He also works with individuals and couples addressing marital or relationship issues, including pre-marital counseling. Dr. Lewis is experienced in the treatment of depression, anxiety, grief, post-trauma recovery, spiritual development, compulsive behavior, gender identity/GLBT, and personality issues.

KERRY MITCHELL, M.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon more...

KERRY MITCHELL, M.N., P.M.H.N.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. She is board certified through the American Nurses Credentialing Center (ANCC), subsidiary of the American Nurses Association (ANA). Mrs. Mitchell has over ten years of experience with mental health and nursing. She provides medication management and limited individual psychotherapy for ages 8 and older. Mrs. Mitchell’s practice focuses on depression, anxiety, bipolar disorders, attention deficiency and hyperactivity, adjustment disorders and Aspergers/autism spectrum disorders.

CINDY B. NORDLUND, PSY.D. is a licensed Psychologist in Oregon. more...

CINDY B. NORDLUND, PSY.D. is a licensed Psychologist in Oregon. Dr. Nordlund has worked in the field since 1994 with children and adults. Her areas of specialty include individual and family therapy for children/adolescents and psychological and educational evaluations. Her areas of practice include behavioral and mood disorders, eating disorders, learning disorders, parent training and group therapy for children/adolescents.

MARK D. NORDLUND, PSY.D. is a licensed Psychologist in Oregon. more...

MARK D. NORDLUND, PSY.D. is a licensed Psychologist in Oregon. He has been providing general outpatient services since 1994 and has worked in private practice, community and hospital settings. Dr. Nordlund works with adults in individual and marital/couples therapy. He is experienced in treating a variety of issues including anxiety, depression, marital/family problems, divorce recovery, anger, grief, men’s issues, and addictions/compulsive behaviors. He also performs psychological assessments with adults.

TIMOTHY A. PERKINS, PSY.D. is a licensed Psychologist in Oregon. more...

TIMOTHY A. PERKINS, PSY.D. is a licensed Psychologist in Oregon. Dr. Perkins has been providing individual, family and group therapy since 1987. He provides individual and family therapy with children, adolescents and adults. Dr. Perkins specializes in the treatment of anxious, depressed, and acting out children. He also provides a variety of personality, cognitive, and educational assessments.

JAMES C. PUTMAN, PSY.D. is a licensed Psychologist in Oregon. more...

JAMES C. PUTMAN, PSY.D. is a licensed Psychologist in Oregon. Dr. Putman has been providing individual, couples and family therapy with children, adolescents and adults since 1986. His clinical experience has included work in private practice, community and hospital settings. Dr. Putman also has been an instructor of counseling at the graduate level. His areas of practice include psychological and personality assessment, assessment and treatment of attention deficit disorder, treatment of mood disturbances, sexual problems, sexual/physical abuse, parenting issues, co-dependency and developmental issues.

LAURA A. ROBERTS, PSY.D. is a licensed Psychologist in Oregon. more...

LAURA A. ROBERTS, PSY.D. is a licensed Psychologist in Oregon. Dr. Roberts specializes in the treatment of anorexia, bulimia, compulsive overeating, anxiety, depression, trauma recovery and the issues of female children, adolescents and adults. Previous clinical experience includes teaching at the graduate school level, community presentations, adolescent and adult inpatient services, general outpatient therapy services since 1989, and specialized training in the integration of theology and clinical psychology within the Christian community.

SARAH L. SAMUELSON, PSY.D.is a licensed Psychologist in Oregon. more...

SARAH L. SAMUELSON, PSY.D.is a licensed Psychologist in Oregon. Dr. Samuelson provides individual counseling for young adult, adult, and geriatric populations. Her practice includes treatment for anxiety, depression, grief, low self-esteem, co-dependency, spiritual issues, relationship issues, adult survivors of abuse and domestic violence, family of origin issues, and personality assessments.

MATTHEW R. SLEASMAN, PSY.D. is a licensed Psychologist in Oregon. more...

MATTHEW R. SLEASMAN, PSY.D. is a licensed Psychologist in Oregon. Dr. Sleasman has been providing general out-patient services since 2000 and has worked in university, community and hospital settings. He provides individual, group, marital and family therapy with adults, adolescents, and children. Dr. Sleasman specializes in the treatment of depression, anxiety, marital/family problems, grief, men’s issues, and anger management. He also provides a variety of personality, cognitive, neurological, and educational assessments.

NORM THIESEN, PH.D. is a licensed Psychologist in Oregon. more...

NORM THIESEN, PH.D. is a licensed Psychologist in Oregon. Dr. Thiesen is a professor in the Masters in Counseling Program at Western Seminary. Dr. Thiesen has over twenty years of experience as a psychologist and college professor and now focuses his practice on adults presenting with mood/anxiety disorders, divorce recovery, life and career transitions, faith/spirituality issues, marital counseling and life coaching.

WARNER B. SWARNER, M.D. is a board certified Psychiatrist who has been in private practice in the Portland area since 1979. more...

WARNER B. SWARNER, M.D. is a board certified Psychiatrist who has been in private practice in the Portland area since 1979. Dr. Swarner maintains his position as staff psychiatrist and consultant at Portland Adventist Medical Center and Legacy Hospitals. He has extensive pharmacological experience in working with depression, anxiety, sleep disorders, obsessive-compulsive disorder and eating disorders. Dr. Swarner is the principal psychiatric investigator and consultant for Radiant Research in Portland. He presents as a guest lecturer at continuing education conferences throughout the Northwest.

ANNETTE GILMORE WALKER, L.C.S.W. is a Licensed Clinical Social Worker in Oregon. more...

ANNETTE GILMORE WALKER, L.C.S.W. is a Licensed Clinical Social Worker in Oregon. Ms. Gilmore Walker has been in practice since 1981. She has extensive clinical experience treating adults in the areas of depression, anxiety, post-traumatic stress, family of origin problems, substance abuse and other addictive/compulsive problems, relationship issues, matters related to grief and loss, and women’s issues.

NANCY WEST, M.N., P.M.N.H.P. is a licensed Psychiatric Mental Health Nurse Practitioner in Oregon. more...

NANCY WEST, M.N., P.M.N.H.P. Nancy West is a board certified psychiatric mental health nurse practitioner with over 20 years of experience in the mental health field. Nancy has advanced training in holistic approaches to treatment of mental health concerns and uses these approaches combined with medication therapy in her practice. Her areas of practice include psychotic disorders, depression, anxiety disorders, stress management, and addiction.

PETE WILSON, PSY.D. is a Licensed Psychologist in Oregon. more...

PETE WILSON, PSY.D. is a licensed Psychologist in Oregon. He has been providing general outpatient services since 1994 and has worked in private practice, community and hospital settings. Dr. Wilson works with adults in both individual and marital/couples therapy. He is experienced in treating a variety of issues including anxiety, depression, marital/family problems, grief, men’s issues, religious issues/ Christian counseling, anger, and addictions/compulsive behaviors. He also performs psychological assessments with adults. Dr. Wilson is also an adjunct professor at George Fox University, teaching courses in their Social and Behavioral Studies program.

Appointment Information

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