Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Ralph L Peterson, MD

Individual provider Gastroenterology Physician · NPI 1851311104

Ralph L Peterson, MD is a Gastroenterology in Oakland, California. Graduated from Howard University College of Medicine in 1978, 48 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
48
Trained at
Howard University College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

10520 Macarthur Blvd
Oakland, CA 94605-5248
Phone: (510) 562-7467
Fax: (510) 635-9025
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence G49099 (CA)

Record details

NPI number1851311104
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 20, 2006
Last updated in NPPESDecember 2, 2011
Mailing address10520 Macarthur Blvd, Oakland, CA 94605-5248

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolHOWARD UNIVERSITY COLLEGE OF MEDICINE
Graduated 1978 (48 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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