NPPES file of Aug 9, 2026

Marion G. Peters, MD

Internal Medicine Physician · San Francisco, CA

Marion G. Peters, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1548218316, issued on May 4, 2006. Check the license (California C50481, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548218316
Name
Marion G. Peters
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
C50481 CA
Self-reported in NPPES; status is on the state search
Practice location
350 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 353-2318
Enumerated
May 4, 2006
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(415) 353-2407
Medicaid ID
0C5048100 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 350 Parnassus Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nathan Bass, MDInternal Medicine Physician1689638959
  2. Dwight Bissell, MDInternal Medicine Physician1831141241
  3. Michael Blum, MDCardiovascular Disease Physician1972568889
  4. Jennifer Cademartori, NPFamily Nurse Practitioner1770504300
  5. Hubert Chen, M.D.Pulmonary Disease Physician1215042957
  6. Linda Clever, MDOccupational Medicine Physician1871558932

Verify Marion G. Peters in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C50481
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $2,550.00

2 payments; by number, the most common kind was consulting fee; the largest payer was Abbott Laboratories. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marion Peters$2,550.00
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Marion G. Peters among 17,696 internal medicine physician records in California

Marion G. Peters, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2007 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,318 internal medicine physician records list a practice address in San Francisco

They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Nathan Bass, MDSan Francisco, CA 941431689638959
  2. Margaret Fang, MDSan Francisco, CA 941431417911462
  3. Katherine Julian, MDSan Francisco, CA 941431003879826
  4. John Kane, MDSan Francisco, CA 941431467416461
  5. Suneil Koliwad, M.D., PH.D.San Francisco, CA 941431225006687
  6. Bernard Lo, MDSan Francisco, CA 941431184688137
  7. Stephen McPhee, MDSan Francisco, CA 941431124082490
  8. Andrew Posselt, MDSan Francisco, CA 941431235193616

Common questions

What is Marion G. Peters, MD's NPI number?

Marion G. Peters, MD's National Provider Identifier (NPI) is 1548218316, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marion G. Peters, MD located?

The NPPES record lists a practice address at 350 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-2318. Providers update this record themselves, so call before visiting.

How can I verify Marion G. Peters, MD's license?

NPPES lists California license number C50481, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.