

Gastroenterology
Ralph Peterson, MD
Medical Director, MacArthur Gastroenterology, Inc.
Oakland, CA
Dr. Ralph L. Peterson, MD, is a gastroenterologist with over 48 years of experience, serving primarily underserved communities in Oakland, California, as Medical Director of MacArthur Gastroenterology, Inc. His practice emphasizes expert diagnosis and management of gastrointestinal disorders, with a particular focus on viral hepatitis (Hepatitis B and C) and fatty liver disease. Over 12 years dedicated to viral hepatitis patients, he has achieved a cure rate exceeding 90% using advanced
45+
Years in Practice
Credentials
Board Certifications
- Gastroenterology
Education & Training
- Howard University College of Medicine — M.D., 1978
- District of Columbia General Hospital — Residency, Internal Medicine, 1978 - 1982
- District of Columbia General Hospital — Fellowship, Gastroenterology, 1982 - 1983
Peer Recognition
- 100 Black Men of America — Recognition and presented award
- 100 Black Men of Bay Area — Recognition and presented award
- Alameda County Board of Supervisors — Recognition for Outstanding Service for Men’s Health
- American Cancer Society — Recognition and presented award
Clinical Focus
Subspecialties
Clinical Hepatology
Conditions & Treatments
Cirrhosis & Liver DiseaseFatty Liver DiseaseLiver CancerViral HepatitisHepatitis BHepatitis C
Practice Details
Hospital Affiliations
- Zuckerberg San Francisco General Hospital
Languages
English[1], Spanish[6]
Experience
45+ years in practice