NPPES file of Aug 9, 2026

Stephanie Lin

Internal Medicine Physician · Martinez, CA

Stephanie Lin is an internal medicine physician with a practice address in Martinez, California, and NPI 1902262967, issued on Jan 6, 2016. Check the license (California A187184, 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
1902262967
Name
Stephanie Lin
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A187184 CA
Self-reported in NPPES; status is on the state search
Practice location
2500 Alhambra Ave, Martinez, CA 94553
Phone
(925) 370-5000
Enumerated
Jan 6, 2016
Record last updated
Sep 21, 2023
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 2500 Alhambra Ave

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

  1. Pyra Aarden, MDEmergency Medicine Physician1417058199
  2. Zohaib AbbasiPsychiatry Physician1013392224
  3. Lolita AdonaFamily Nurse Practitioner1821110925
  4. Namita AgarwalPediatrics Physician1467626341
  5. Edward AgyekumDentist1124196696
  6. Abid Ahmed, M.D.Internal Medicine Physician1346531001

Verify Stephanie Lin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A187184
    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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98% fewer Medicare Part D claims than the average internal medicine physician in 2024

73 Medicare Part D claims for 25 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.

  1. Stephanie Lin73
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Stephanie Lin among 17,696 internal medicine physician records in California

Stephanie Lin 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 2016, is newer than 79% of them.

  • NPI issued2016 · 79% of these records are older, 19% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2023 · 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).

48 internal medicine physician records list a practice address in Martinez

They are 48 of the 1,816 NPPES records with a practice address in Martinez, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. David Chapman, MDMartinez, CA 945531578548129
  2. George Chuang, DOMartinez, CA 945531235217324
  3. Jeremy Fish, MDMartinez, CA 945531952497943
  4. Thomas Gamsky, MDMartinez, CA 945531043296247
  5. Gerhard Heinrich, M.D.Martinez, CA 945531306828728
  6. Nancy Lazarus, M.D.Martinez, CA 945531073598223
  7. Sara Levin, MDMartinez, CA 945531184707853
  8. Brian O'Neill, M.D.Martinez, CA 945531366425985

Common questions

What is Stephanie Lin's NPI number?

Stephanie Lin's National Provider Identifier (NPI) is 1902262967, issued on Jan 6, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Stephanie Lin located?

The NPPES record lists a practice address at 2500 Alhambra Ave, Martinez, CA, 94553. Phone: (925) 370-5000. Providers update this record themselves, so call before visiting.

How can I verify Stephanie Lin's license?

NPPES lists California license number A187184, 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.

How much does Stephanie Lin prescribe under Medicare Part D?

In 2024, Stephanie Lin had 73 Medicare Part D claims for 25 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

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.