About Us

Essential Healthcare Group is a single specialty gastroenterology and hepatology (liver disease) practice comprised of three providers: Harry Park, MD, Christopher Stanke, MD and Zach Manning, NP.

Dr. Park has served the Eugene-Springfield area for at least 15 years, while Dr. Stanke has contributed his talents to the community for 3 years. Our physicians collectively have more than 25 years of experience and are board-certified.

Our gastroenterologists are experts in all aspects of their specialties, including colon cancer screening procedures and treatment of GERD, inflammatory bowel disease, and irritable bowel syndrome, as well as treatment of diseases of the liver, biliary system and pancreas. If you’re seeking state-of-the-art, comprehensive GI patient care, contact your primary care physician for referral to us or call us directly to inquire about an appointment.

Our staff at Oregon Digestive look forward to providing high quality care in a safe and friendly environment.

From left to right:

Amanda, AAMA, Medical Assistant

Sara, Patient Access Coordinator

Carol, Practice Coordinator

Chelsea, RN, BSN

Tina Marie, CCMA, Medical Assistant