Dr. Douglas A Shumaker MD
Gastroenterology Physician
/Allergy Physician
Phone, Open Hours, Reviews & Information
(503) 297-8081
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An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
A physician who specializes in the diagnosis, treatment, and management of allergies.