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Vancouver (360) 910-1522 | Portland (503) 454-6834
Seattle (206) 624-0271 | Silverdale & Bainbridge (360) 692-3970
Salt Lake City (801) 850-9559

Portland, Oregon

Portland Office

10121 SE Sunnyside Road
Suite 300
Clackamas, OR 97015

503 454 6834 Phone
503 214 8486 Fax

Landon Poppleton, PhD, JD

Landon Poppleton, PhD, JD, is a licensed clinical psychologist in the state of Oregon (1999) and Washington (PY 60041144). Since 2001 he has worked with adults, families, and children in divorce and separation. He is trained in the “scientist-practitioner model,” where his assessment and clinical practice is informed by social science research. In his practice he provides empirically based psychological assessment, bilateral custody evaluations, mediation, parenting coordination, and reunification counseling.


Jeff Lee, PhD

Jeff A. Lee, PhD is a licensed clinical and forensic psychologist in Washington (PY 60229346) and Oregon (2242).

I am trained in both scientist-practitioner and scholar-practitioner models from which I provide empirically and theoretically informed assessments, consultation, and psychotherapy. My primary focus is forensic evaluations including violence risk, sex offender, parenting capacity, competency, insanity, and mental state evaluations for both adolescents and adults.