Summary

Dr. Ralph Peterson is a gastroenterologist and internal medicine physician who earned his medical degree from Howard University College of Medicine and completed his residency at DC General Hospital. With 48 years of experience in practice, he brings extensive expertise to digestive health and general internal medicine care. Dr. Peterson is fluent in Spanish, Vietnamese, and English.

Dr. Peterson practices at multiple locations throughout Oakland and San Francisco, with affiliations at Wilma Chan Highland Hospital Campus, Kaiser Permanente Oakland Medical Center, and Alta Bates Summit Medical Center Summit Campus. He specializes in treating conditions such as abdominal pain, gastritis, and dyspepsia. His procedural expertise includes performing colonoscopies and lower GI endoscopy procedures, along with ordering pathology tests for comprehensive digestive health evaluation. Patients rate Dr. Peterson an average of 4.6 out of 5 stars.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 4.5
  • 48 years of experience
  • speaks Spanish, Vietnamese, English
  • Dc General Hospital
  • 1 written review
  • 2 specialties
  • 9 areas of expertise
  • 3 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Ralph Laurence Peterson has 4 locations

Macarthur Gastroenterology Inc

10520 MacArthur BlvdOakland, CA 94605
Mon9:00 am - 3:00 pm
Tue9:00 am - 3:00 pm
Wed9:00 am - 3:00 pm
Thu9:00 am - 3:00 pm
Fri9:00 am - 3:00 pm
SatClosed
SunClosed

Wilma Chan Highland Hospital Campus

1411 E 31st StOakland, CA 94602

South Of Market Health Center

229 7th StSan Francisco, CA 94103
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 7:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 3:30 pm
SatClosed
SunClosed

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Dr. Ralph Laurence Peterson, MD
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Dr. Ralph Laurence Peterson, MDDr. Allison KwongDr. Afrin KamalDr. Suk Whang, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
48 Years of Experience 14 Years of Experience 15 Years of Experience 24 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, Vietnamese, English
Oakland , CARedwood City , CAStanford , CAVacaville , CA
Med School: Howard University College Of Medicine Med School: Icahn School Of Medicine At Mount Sinai Med School: University Of Missouri-Kansas City School Of Medicine Med School: Uniformed Services Univ Of The Health Sciences F E Hebert Schl Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Ralph Laurence Peterson

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Ralph Laurence Peterson has the following 2 specialties

Specialty Expertise

Dr. Ralph Laurence Peterson has the following 9 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

48 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Residency

Dc General Hospital

Medical School

Howard University College Of MedicineGraduated in 1978

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Frequently Asked Questions

How can I make an appointment with Dr. Ralph Peterson?
You can find contact information for Dr. Ralph Peterson here on Vitals.
Where is Dr. Ralph Peterson's office located?
Dr. Ralph Peterson's office is located at 10520 MacArthur Blvd, Oakland, CA, 94605.
Which hospitals is Dr. Ralph Peterson affiliated with?
Dr. Ralph Peterson is affiliated with Wilma Chan Highland Hospital Campus, Kaiser Permanente Oakland Medical Center, and Alta Bates Summit Medical Center Summit Campus.
Does Dr. Ralph Peterson accept my insurance?
You can see the insurance plans that Dr. Ralph Peterson accepts on their Vitals profile.
Is Dr. Ralph Peterson accepting new patients?
Dr. Ralph Peterson is accepting new patients on Vitals. View Dr. Ralph Peterson's profile on Vitals to make an appointment.

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