About Us


Pacific Psychology Services is comprised of a group of licensed clinical psychologists. Each psychologist has received specialized training in forensics and are committed to providing excellence.

James Manley, Ph.D., SOTP

James Manley, Ph.D. is a licensed clinical psychologist and sex offender treatment provider in Washington. He is located in Tacoma where he is the lead psychologist of Pacific Psychology Services. He is experienced in a broad range of clinical areas including counseling, forensic evaluation, supervision and teaching. Particular professional interests include cross cultural issues, children and families, sexual misconduct, personality disorders, substance abuse, domestic violence, anxiety, and depression.

Dr. Manley’s areas of forensic expertise include parental capacity, mental state defense, Special Sex Offender Sentencing Alternative, and Sexually Violent Predator evaluations. He has provided supervision and training in the areas of forensics, counseling, parental capacity, and testing at the undergraduate, graduate, and postgraduate levels.

Megan Carter, Psy.D

Dr. Carter graduated with her master’s degree in applied social psychology from Portland State University before completing a master’s degree in clinical psychology and a doctorate in clinical psychology, with an emphasis on forensics, at Pacific University in Forest Grove, Oregon. She completed a pre-doctoral internship at Western State Hospital and then a forensic post-doctoral fellowship through the University of Washington School of Medicine, Department of Psychiatry. She has presented internationally and has published. She became a licensed psychologist in Washington State in 2008.

Dr. Carter works as a forensic psychologist with specialty areas in sexual abuse and child welfare issues. She has been declared an expert by the courts in both these areas and has provided expert testimony. She is available for trainings and consultation in variety of areas.

Kendra M.S. Crowell, Ph.D.

Dr. Crowell completed her Ph.D. in clinical psychology with an emphasis in Forensic Psychology at Palo Alto University. She completed a pre-doctoral internship at Western State Hospital and then a forensic post-doctoral fellowship including forensic evaluations and psychological assessment at Western State Hospital. She has presented internationally, and is published in scientific journals.

Dr. Crowell is a licensed Psychologist in the state of Washington. She is employed as a forensic psychologist and specializes in evaluation of competency to proceed to trial, mental state, civil commitment, violence risk assessment, and parental fitness and capacity.

Chris Cadle, Ph.D

Chris Cadle, Ph.D.

Dr. Cadle has a broad professional background, including work in research, therapeutic, and forensic settings. He earned his Ph.D. in Clinical Psychology from the University of Louisville and completed a pre-doctoral internship at Western State Hospital. His post-doctoral fellowship was with the University of Washington School of Medicine Department of Psychiatry with an emphasis in Forensic Psychology. After training, Dr. Cadle worked as a civilian Licensed Psychologist with Joint Base Lewis McChord (JBLM) at Madigan Army Medical Center. Following his work at JBLM, Dr. Cadle returned to civilian employment and the forensic mental health field.

Dr. Cadle's areas of professional interest include serious mental illness, substance use, competency to stand trial, mental state at the time of the offense, parental fitness, and risk assessment.

Alexander Patterson, Ph.D.

Alexander Patterson, Psy.D.

Dr. Patterson was born and raised in South Seattle and is an alumni of the University of Washington. He completed a doctoral degree in clinical psychology at George Fox University. His internship was at the Vanderbilt University - Tennessee Valley VA Consortium and residency at the Portland VA Medical Center. He also completed a post-doctoral master's degree in psychopharmacology. Prior to going into private practice, he spent five years working for the Department of Defense providing assessment and treatment to military families.

Dr. Patterson has extensive experience conducting psychological assessment of adults and children. Specific areas of expertise include competency to stand trial, criminal responsibility, violence risk, parental fitness, disability, and psychological evaluations for the workplace. He also has experience providing individual and family psychotherapy. Dr. Patterson has published in peer-reviewed academic journals and provided expert testimony.

Bruce Duthie, Ph.D., ABPP

Dr. Duthie received his doctorate from Texas A&M University. He has over 30 years of experience doing forensic evaluations. He is a Diplomat with the American Board of Professional Psychology in Forensic Psychology. He is an adjunct professor at Antioch University where he taught Forensic Psychology and psychological evaluation. His forensic (psycho-legal) experience includes the following kinds of forensic evaluations: competency, sanity, personal injury, parental capacity, juvenile assessment, and psycho-sexual assessment.

Dr. Duthie also has extensive experience in group, individual, and family therapy. He specializes in the treatment of children and adolescents as well as patients with personality disorders. He approaches psychotherapy from a behavioral and humanistic perspective based on his extensive experience and training in Gestalt Therapy.

Michael Stanfill, Ph.D.

Dr. Michael Stanfill received his doctorate from the California School of Professional Psychology at Alliant International University and completed his predoctoral training at Western State Hospital. His postdoctorate fellowship involved the treatment and assessment of posttraumatic stress. Dr. Stanfill's expertise includes the psychological assessment and treatment of major mental illness in forensic and clinical contexts with children, adolescents, and adults. 

His forensic expertise includes: competency to stand trial, diminished capacity and not guilty by reason of insanity, parental fitness and capacity, violence risk assessment, sentencing mitigation, and presence of a mental illness as it relates to detainment classification. Dr. Stanfill consults to outside agencies on the use of psychological assessment, and policy and programming issues related psycho-legal concerns in correctional settings. He has published, and speaks nationally, on developmental trajectories, the validity of psychological assessment with multiple populations, and contextual mental health policy.

Lorien J. Newsome, Ph.D

Dr. Newsome completed her Ph.D. in Clinical Psychology with an emphasis in Forensic Psychology at the California School of Professional Psychology in San Diego, California.  She completed a pre-doctoral internship at Western State Hospital in Tacoma, Washington, followed by a post-doctoral forensic psychology fellowship at the Center for Behavioral Medicine at the University of Missouri, Kansas City - School of Medicine.

Dr. Newsome is a licensed psychologist in the state of Washington.  She is employed as a forensic psychologist and specializes in evaluation of competency to stand trial, mental state, civil commitment of sexual offenders and individuals with serious mental illness, and parental capacity in child protection cases.

Fran Lexcen, Ph.D.

Dr. Lexcen is a licensed psychologist with over 15 years of experience working with families and children in both domestic and criminal court settings. She has published in scientific journals and law review publications, and presents to judges, lawyers and clinical psychologists on a variety of topics related to assessment and intervention.

Dr. Lexcen is especially interested in promoting the well-being of children within the family setting where positive relationships can enhance developmental outcomes.

Tanya Siedorkmai, MA
Office Manager

Ms. Siedorkmai brings a wealth of international perspective and organization to Pacific Psychology Services. Her past management skills have assisted both psychologists and clients. Ms. Siedorkmai earned her M.A. in English as a Second Language from Thailand and taught learners of all ages for 25 years. While continuing to serve her country she was an International Relations Officer for the Ministry of Information and Communication Technology under the supervision of the Royal Thai Government, and the Director of English Language Development Center with the Ministry of Education of Thailand. In the private sector she has traveled extensively to English speaking countries leading groups of Thai students on educational and cultural trips.

After relocating to the US, Ms. Siedorkmai has been an International Student Advisor at the community college level. She has also been a volunteer instructor at the Tacoma Community House and with the Tacoma Community College. She has volunteered at St. Joseph Hospital and the Asia Pacific Cultural Center.