NPPES file of Aug 9, 2026

Thomas Markus Fandel, M.D.

Endocrinology, Diabetes & Metabolism Physician · San Jose, CA

Thomas Markus Fandel, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in San Jose, California, and NPI 1952833931, issued on Mar 30, 2017. Check the license (California A-165033, 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
1952833931
Name
Thomas Markus Fandel
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
A-165033 CA
Self-reported in NPPES; status is on the state search
Practice location
2690 S White RD Ste 50, San Jose, CA 95148
Phone
(408) 223-7000
Enumerated
Mar 30, 2017
Record last updated
Jul 9, 2022
Fax
(408) 223-7001
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 endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →

Also registered at 2690 S White RD Ste 50

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

  1. Joselito Cabaccan, MDEndocrinology, Diabetes & Metabolism Physician1801813720
  2. Vivian DiepPhysician Assistant1487167912
  3. Thu Ho, M.D.Pediatric Endocrinology Physician1245437433
  4. Anjali Jain, M.D.Pediatric Endocrinology Physician1174707392
  5. Lily Kao, MDRheumatology Physician1578742888
  6. Alex Pham, PA-CPhysician Assistant1043813132

Verify Thomas Markus Fandel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A-165033    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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2.4 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024

6,234 Medicare Part D claims for 555 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.

  1. Thomas Fandel6,234
  2. Specialty average2,630

Most prescribed

  1. Jardiance457 claims
  2. Atorvastatin Calcium394 claims
  3. Ozempic394 claims
  4. Repaglinide389 claims
  5. Levothyroxine Sodium381 claims
  6. Metformin Hcl356 claims

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.

Industry payments in 2024: $2,377.44

93 payments; by number, the most common kind was food and beverage; the largest payer was Xeris Pharmaceuticals, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thomas Fandel$2,377.44
  2. Specialty average$5,742.15

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

Thomas Markus Fandel among 1,131 endocrinology, diabetes & metabolism physician records in California

Thomas Markus Fandel, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.

  • NPI issued2017 · 89% of these records are older, 8% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2022 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in California

There are 1,131 endocrinology, diabetes & metabolism physician records in California.

All 1,131 in California → Every provider in San Jose → Endocrinology, Diabetes & Metabolism Physician nationwide →

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Joselito Cabaccan, MDSan Jose, CA 951481801813720
  2. Jasdev Gondal, M.D.San Jose, CA 951381689839425
  3. Lawrence Crapo, MDSan Jose, CA 951281174592075
  4. Alvaro Davila, MDSan Jose, CA 951281144299926
  5. Dyron Jue, MDSan Jose, CA 951281760484240
  6. Laurel McClure, M.D.San Jose, CA 951281306000369
  7. Patricia Salmon, M.D.San Jose, CA 951281053569228
  8. Archana Bindra, M.D.San Jose, CA 951241225066947

Common questions

What is Thomas Markus Fandel, M.D.'s NPI number?

Thomas Markus Fandel, M.D.'s National Provider Identifier (NPI) is 1952833931, issued on Mar 30, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Markus Fandel, M.D. located?

The NPPES record lists a practice address at 2690 S White RD Ste 50, San Jose, CA, 95148. Phone: (408) 223-7000. Providers update this record themselves, so call before visiting.

How can I verify Thomas Markus Fandel, M.D.'s license?

NPPES lists California license number A-165033, 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 Thomas Markus Fandel, M.D. prescribe under Medicare Part D?

In 2024, Thomas Markus Fandel, M.D. had 6,234 Medicare Part D claims for 555 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.

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.