Scott Losk, PhD, Principal Investigator
Dr. Losk is a clinical psychologist and neuropsychologist who has maintained a clinical and research practice with Summit Research Network in Portland, OR since 1990. He has conducted over 50 clinical trials in Alzheimer’s disease since 1990 and has done research on all of the current FDA-approved drugs for Alzheimer’s disease. He was involved in the very earliest research that led to the first-ever treatment for Alzheimer’s disease (Tacrine) in 1992. Dr. Losk has extensive clinical and research experience in all aspects of cognitive disorders. Because of his background, experience, and contacts in the pharmaceutical industry, he has access to all of the latest research studies in Alzheimer’s disease.
MaryAnn Conrad, MD, Principal Investigator
MaryAnn Conrad, MD, graduated from the University of Washington with a bachelor’s degree in psychology in 1987, and a medical degree in 1991. She is board certified in internal medicine and completed her internal medicine residency at the University of Hawaii in 1995. Before joining Summit Research Network in 2002, Dr. Conrad practiced as a primary care physician for Providence Medical Group and Kaiser Permanente. At Summit she enjoys focusing on clinical research, mental health and women’s health. When not taking care of patients at Summit, Dr. Conrad enjoys hanging out with her husband and cat, watching Blazer games, hiking, going to the Oregon coast, and photography.
James Bergthold, MD, Principal Investigator
James Bergthold, MD is board certified in Internal Medicine. He received a bachelor’s degree in biology in 1986 from Biola University and a medical degree from the Medical College of Wisconsin in 1992. Following his residency in internal medicine from Oregon Health Sciences University in 1995, he was a partner at HealthFirst Medical Group and the Providence Medical Group. Dr. Bergthold’s special interests include geriatric medicine, cardiology and diabetes. He has been with Summit Research since 2001, and has been an investigator in over 100 clinical trials. He has been a Principal Investigator in studies involving hypertension, diabetes, multiple sclerosis, chronic pain, obesity, Alzheimer’s dementia, insomnia, and migraine headaches.
Philip Bolton, MD, PRINCIPAL INVESTIGATOR
Philip Bolton, MD, obtained a bachelor’s degree in Biology from Colgate University in 1987 and a medical degree from Albany Medical College in 1995. In 1999, he graduated from the Psychiatry Residence Training Program at Oregon Health Sciences University. Since 2004 he has been a Diplomate of the American Board of Psychiatry and Neurology. Dr. Bolton has provided inpatient psychiatric treatment at Providence St. Vincent Medical Center and outpatient psychiatric treatment in a variety of settings. Since 2014 he has been an investigator at Summit Research Network. Dr. Bolton has studied complimentary medicine including acupuncture and qigong. He enjoys spending time with his family hiking and exploring Oregon.
Mary Horton, RN, ANP SUB-INVESTIGATOR/
Mary Horton graduated from Walla Walla School of Nursing and the Nurse Practitioner program at Kaiser Permanente. She is Board Certified by the ANCC, the certifying organization for Nurse Practitioners. She joined Summit Research in 1998 and has participated in over 100 clinical trials involving depression, anxiety, bipolar disorders, dementia, alcohol dependence, migraine & fibromyalgia. Prior to coming to SRN, she worked at Kaiser Permanente in primary care.
Karen Wilson, RN, MA
Karen Wilson, RN, MA received her Bachelor of Science in Nursing from OHSU (formerly University of Oregon School of Nursing). She had 12 years of chronic pain rehabilitation experience prior to joining Summit Research Network in 1989. As a research clinician she has experience in clinical trials for such conditions as dementia, depression and anxiety. She received her Masters of Arts in Counseling from Western Seminary in 1997. As a member of the Memory Health Center team at Summit Research Network she has participated in the National Memory Screening event sponsored by the Alzheimer’s Foundation of America for many years. She is the facilitator for our Caregiver Support Group, which is affiliated with the Alzheimer’s Association. She received training as a Certified Geriatric Wellness Instructor and is actively involved in community outreach and education.
Carrie Crider, BS, RESEARCH CLINICIAN/
Carrie Crider, BS, received her bachelors in Psychology at Portland State University. She has been a Research Clinician at Summit for over ten years. Carrie has clinical trial experience in studies focusing on depression, anxiety, bipolar disorder and Alzheimer’s disease. At Summit, Carrie has been a sub-investigator on over 60 studies. Prior to working at Summit, Carrie attended school at Queens College in New York and worked in a research and publishing capacity studying the effects of dementia on emotion under Dr. Joan Borod. Before this, Carrie worked at OHSU on a cognitive remediation program for children who were cancer survivors.