NPPES file of Aug 9, 2026

Janet E. Gaston, M.D.

Internal Medicine Physician · Alamo, CA

Janet E. Gaston, M.D. is an internal medicine physician with a practice address in Alamo, California, and NPI 1053351825, issued on Jun 8, 2006. Check the license (California C38245, 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 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1053351825
Name
Janet E. Gaston
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
C38245 CA
Self-reported in NPPES; status is on the state search
Practice location
1505 Saint Alphonsus Way, Alamo, CA 94507
Phone
(925) 837-4225
Enumerated
Jun 8, 2006
Record last updated
Jun 21, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(925) 838-5775
Medicaid ID
00C382450 AR
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 1505 Saint Alphonsus Way

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

  1. Cathrien Abdelnor, MDFamily Medicine Physician1033783246
  2. Stephanie Byrne, MD, MPH, MBAPediatrics Physician1821550609
  3. Leonard Chuck, MDInternal Medicine Physician1831139385
  4. Paul Cortez, M.D.Pediatrics Physician1629018171
  5. Julie Goo, MDFamily Medicine Physician1003872961
  6. Manisha Malhotra, M.D.Internal Medicine Physician1780614065

Verify Janet E. Gaston in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C38245    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

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The practice group's MIPS final score for 2023 (Medicare payment program): 85.7 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score82.7
  2. Costout of 100 · 30%70.6
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

8 internal medicine physician records list a practice address in Alamo

They are 8 of the 114 NPPES records with a practice address in Alamo, and 17,696 internal medicine physician records in California.

All 8 in Alamo → All 17,696 in California → Every provider in Alamo →

Other internal medicine physician records in California

  1. Jacob Aaron, MDSan Francisco, CA1407202518
  2. Alistair Aaronson, MDStanford, CA1457628760
  3. Jose Abad., MDSacramento, CA1144607219
  4. Donna Abare, MDOakland, CA1386722155
  5. Marce AbareScotts Valley, CA1457744708
  6. Samuel Abarte, M.D.Chula Vista, CA1578535498
  7. Alexander Abary, MDLong Beach, CA1104995919
  8. Luba Abascal, MDSan Francisco, CA1023180874
  9. Michael Abate, MDSacramento, CA1548248131
  10. Wali Abawi, D.O.Joshua Tree, CA1104362268

Common questions

What is Janet E. Gaston, M.D.'s NPI number?

Janet E. Gaston, M.D.'s National Provider Identifier (NPI) is 1053351825, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Janet E. Gaston, M.D. located?

The NPPES record lists a practice address at 1505 Saint Alphonsus Way, Alamo, CA, 94507. Phone: (925) 837-4225. Providers update this record themselves, so call before visiting.

How can I verify Janet E. Gaston, M.D.'s license?

NPPES lists California license number C38245, 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.

What is Janet E. Gaston, M.D.'s MIPS final score?

The 2023 MIPS final score is 85.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

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.