Our research centers offer professional and experienced staff including:

  • Board Certified Physicians
  • Registered Nurses
  • Certified Clinical Research Coordinators
  • Certified Lab Technicians
  • Medical Assistants
  • Support Personnel

Jerry C. Steiert

Jerry C. Steiert, MD, Principal Investigator

Dr. Steiert has worked in clinical research since 2001 and has served as Principal Investigator at Summit Research Network since 2004. He has been Principal Investigator on a wide variety of studies in various indications, including depression, bipolar disorder, smoking cessation, alcohol dependence, ADHD and insomnia. Dr. Steiert is board certified in Psychiatry with the American Board of Psychiatry and Neurology.

Claire Waltman

Claire Waltman, MD, Principal Investigator

Dr. Waltman has worked in clinical research since 1995. Her experience includes research fellowships at the National Institute on Aging and Johns Hopkins. She has served as Principal Investigator on studies since 1999 and joined Summit Research Network in 2006. She is board certified in Endocrinology and Metabolism as well as Internal Medicine.

Benjamin Dobbeck


Dr. Hammel has worked in clinical research since 2002, starting as a medical student at Harvard. He has been a Principal Investigator as a US-UK Fulbright Scholar at Oxford University, where he received a graduate research degree in Medical Sciences. He joined the Summit Research Network team January 2015. He is medically licensed in Washington, Oregon, Arizona, New York, and Massachusetts. Dr. Hammel is board certified in Psychiatry and in Psychosomatic Medicine with the American Board of Psychiatry and Neurology.

Benjamin Dobbeck

Benjamin Dobbeck, PsyD, Principal Investigator/Rater/Diagnostician

Dr. Dobbeck, clinical psychologist, has worked in clinical research since 1999, including 5 years with Summit Research Network (Oregon) Inc. He joined the Summit Seattle team in 2008. While working mostly with adults, he also has considerable experience working with pediatric and adolescent populations. Dr. Dobbeck is licensed in both Oregon and Washington.

Laurel Leigh

Laurel Leigh, RN, MA, MS, MFT, Rater/Diagnostician

Laurel Leigh has worked as a psychometrician and researcher since 1995 at Summit Research Network. She has evaluated patients for many kinds of studies including depression, anxiety, panic, ADHD, PTSD, social anxiety, smoking cessation, and insomnia disorders.

Kathryn Moser

Kathryn Moser, MS, PA-C, Sub-Investigator/Diagnostician

Kathryn Moser has worked in clinical research since 2005. Her research experience includes evaluating patients for various studies in depression, bipolar disorder, ADHD, anxiety, PTSD, insomnia, hypertension, diabetes, migraines, osteoarthritis, and fibromyalgia. She joined the Summit team in 2011. Prior to working in clinical research, she worked in Family Practice Medicine. She received her Master’s degree from UMDNJ / Rutgers PA program in 2003 and is certified with the NCCPA, the national certifying organization for Physician Assistants. When not taking care of patients here at Summit, Kathryn participates in martial arts, archery, skiing, reading, travelling, and cooking.