NPPES file of Aug 9, 2026

Willis L. Gelston, M.D.

Geriatric Medicine (Family Medicine) Physician · San Leandro, CA

Willis L. Gelston, M.D. is a geriatric medicine (family medicine) physician with a practice address in San Leandro, California, and NPI 1134188360, issued on Mar 17, 2006. Check the license (California C32875, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1134188360
Name
Willis L. Gelston
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Family Medicine) Physician 207QG0300X
License number
C32875 CA
Self-reported in NPPES; status is on the state search
Practice location
13851 E 14TH St, San Leandro, CA 94578
Phone
(510) 351-2100
Enumerated
Mar 17, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(510) 357-3389
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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8 nearest geriatric medicine (family medicine) physician records → All 243 in California → Look up another NPI →

Also registered at 13851 E 14TH St

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

  1. Hamoudi Al-Bander, M.D.Specialist1316988785
  2. Kelley Bradshaw, M.S., R.D.Registered Dietitian1477826444
  3. Wisal Fare, PA-CAdult Health Clinical Nurse Specialist1578525598
  4. Robert Gingery, M.D.Vascular Surgery Physician1417974460
  5. Kenneth Harley, MDEmergency Medicine Physician1558333443
  6. Michael Ingegno, M.D.Vascular Surgery Physician1447270459

Verify Willis L. Gelston in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C32875    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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Willis L. Gelston among 243 geriatric medicine (family medicine) physician records in California

Willis L. Gelston, M.D. is one of 243 geriatric medicine (family medicine) physician records with a practice address in California. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 53% newer
  • In a Medicare fileNo · 76% of these records are
  • In the CMS Doctors and Clinicians fileNo · 46% of these records are
  • Record last updated2007 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Family Medicine) Physician providers in California

There are 243 geriatric medicine (family medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 243 in California → Every provider in San Leandro → Geriatric Medicine (Family Medicine) Physician nationwide →

The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes

  1. Douglas Zhang, M.D.San Leandro, CA 945781023074341
  2. Farah Alsaati, MDUnion City, CA 945871083147755
  3. Ying Zhang, M.D.Union City, CA 945871861665564
  4. Anakha Nambiar, M.D.Walnut Creek, CA 945951366487993
  5. Purnima Sreenivasan, M.D.Walnut Creek, CA 945981578754362
  6. Robert Formanek, M.D.Martinez, CA 945531972678811
  7. Monique Hedmann, MPHOakland, CA 946071427544204
  8. Sheila Raumer, MDAlamo, CA 945071477530988

Common questions

What is Willis L. Gelston, M.D.'s NPI number?

Willis L. Gelston, M.D.'s National Provider Identifier (NPI) is 1134188360, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Willis L. Gelston, M.D. located?

The NPPES record lists a practice address at 13851 E 14TH St, San Leandro, CA, 94578. Phone: (510) 351-2100. Providers update this record themselves, so call before visiting.

How can I verify Willis L. Gelston, M.D.'s license?

NPPES lists California license number C32875, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.