Quick answers
- Where does Ralph Peterson see patients?
- Medicare's clinician data lists 1 practice location in Oakland, CA. Call before your visit to confirm the address.
- What is Ralph Peterson's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Ralph Peterson accept Medicare assignment?
- Yes. Medicare's clinician data says Ralph Peterson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Ralph Peterson offer telehealth?
- Medicare's clinician data says Ralph Peterson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ralph Peterson?
- (520) 562-7467, as listed in official Medicare / NPI Registry data.
- What is Ralph Peterson's NPI number?
- 1851311104. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ralph Peterson is enrolled with Medicare (CMS data updated 2026-10-02).
- 10520 Macarthur BlvdOakland, CA 94605 (520) 562‑7467
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Oakland
Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1851311104 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians