Gary Gretch, M.D. is a board certified physician in Internal Medicine. Dr. Gretch was born and raised in Montana. He received a Bachelor of Science in both Biology and Chemistry in 1983 from the College of Great Falls in Great Falls, Montana. He received his medical degree in 1987 from Washington University in St. Louis, Missouri and completed his internship and residency in Internal Medicine at Oregon Health Sciences University in Portland, Oregon. Dr. Gretch began his medical career in 1990 as Chief Resident in Internal Medicine at Oregon Health Sciences University and established his private practice in 1991 by joining Dr. William Seal in Bremerton, Washington. In 1996 Dr. Gretch, along with his partners Dr. Frederick Dore Jr. and Dr. William Seal, formed Olympic Internal Medicine Associates. The group merged with Kitsap Internal Medicine Associates at the end of 2009 and is now known as Olympic Internal Medicine, Inc., P.S. He has multiple times been named as one of the “Top Docs” in Kitsap County by Checkbook Magazine. Dr. Gretch’s member affiliations include: the American College of Physicians, Alpha Omega Alpha, Washington State Medical Association and the Kitsap County Medical Society. In his spare time, he enjoys kayaking, hiking, cross country skiing and other outdoor activities.

Meet our other physicians



  • Olympic Internal Medicine provides prompt, compassionate care. The providers and staff treat each patient with respect and kindness. My physician listens to my concerns and offers healthcare options that are in my best interest. They know me and understand my unique personal medical needs but also respect my limitations. -Todd S.
  • As a patient, knowing you have an excellent staff of physicians capable of meeting your health care needs is most reassuring. Over the years I have continued to be in awe of the service and treatment available at Olympic Internal Medicine. From the office staff to the brilliant doctors, one couldn’t ask for better. -Penny F.
  • Going to my physician at Olympic Internal Medicine is a pleasant experience. Staff is professional and very caring to my needs. The Clinic is very efficient and communication is key in their performance. I have a lot of trust in my doctor. -Kathy L.
  • As a patient, you always hope to be shown the best care and concern for your needs. I must say the doctors and staff at Olympic Internal Medicine continue to exceed my expectations. From the promptness of appointments to the treatment from the doctor, I feel very fortunate to have found such an exemplary health care clinic. -John F.


If you are looking for a compassionate internal medicine provider to oversee your care and focus on your overall health, call us at (360)377-3923
Make An Appointment Today!