NPPES file of Aug 9, 2026

Martin Thelin, MD, PHD

Pediatric Endocrinology Physician · San Francisco, CA

Martin Thelin, MD, PHD is a pediatric endocrinology physician with a practice address in San Francisco, California, and NPI 1225562440, issued on Apr 13, 2017. Check the license (California A172426, 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
1225562440
Name
Martin Thelin
Credential
MD, PHD
Primary taxonomy
Pediatric Endocrinology Physician 2080P0205X
License number
A172426 CA
Self-reported in NPPES; status is on the state search
Practice location
550 16TH St, San Francisco, CA 94143
Phone
(415) 476-5001
Enumerated
Apr 13, 2017
Record last updated
Feb 22, 2024
Medicare enrollment
Enrolled (PECOS I20240228001972); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 550 16TH St

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

  1. Naomi Abe, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1821387572
  2. Mara Bailey-Olson, NPNurse Practitioner1104100692
  3. Liat Bird, MDPediatrics Physician1902269087
  4. Tiffany Bittle, NNP-BCNeonatal Nurse Practitioner1073297495
  5. Julie Boiko, MDPediatric Hematology & Oncology Physician1891149506
  6. Amanda Bryson, M.D.Pediatrics Physician1912438847

Verify Martin Thelin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A172426
    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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86% fewer Medicare Part D claims than the average pediatric endocrinology physician in 2024

15 Medicare Part D claims, against an average of 105 among the 386 providers of this specialty who prescribed in Part D.

  1. Martin Thelin15
  2. Specialty average105

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: $134.21

1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 931 providers of this specialty with any payment received $4,382.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Martin Thelin$134.21
  2. Specialty average$4,382.94

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

Bills Medicare through 2 group practices

  1. Ucsf Pediatrics AssociatesSan Francisco, CA
  2. University OF California San FranciscoSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Martin Thelin among 207 pediatric endocrinology physician records in California

Martin Thelin, MD, PHD is one of 207 pediatric endocrinology physician records with a practice address in California. 63% 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 85% of them.

  • NPI issued2017 · 85% of these records are older, 10% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileYes · 23% of these records are
  • Graduated2012 · median 2002 among the 46 with a school on file
  • Record last updated2024 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0205X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Endocrinology Physician providers in California

There are 207 pediatric endocrinology physician records in California.

The 8 pediatric endocrinology physician records with the nearest ZIP codes

  1. Saleh Adi, M.D.San Francisco, CA 941431598782336
  2. Hannah Chesser, M.D.San Francisco, CA 941431104204767
  3. Abby Cobb-Walch, MDSan Francisco, CA 941431215355581
  4. Stephen Gitelman, M.D.San Francisco, CA 941431063440980
  5. Nicholas Heiniger, M.D.San Francisco, CA 941431801117221
  6. Roger Long, M.D.San Francisco, CA 941431285641449
  7. Robert Lustig, MDSan Francisco, CA 941431790708576
  8. Avni Shah, MDSan Francisco, CA 941431699938928

Common questions

What is Martin Thelin, MD, PHD's NPI number?

Martin Thelin, MD, PHD's National Provider Identifier (NPI) is 1225562440, issued on Apr 13, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Martin Thelin, MD, PHD located?

The NPPES record lists a practice address at 550 16TH St, San Francisco, CA, 94143. Phone: (415) 476-5001. Providers update this record themselves, so call before visiting.

How can I verify Martin Thelin, MD, PHD's license?

NPPES lists California license number A172426, 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 Martin Thelin, MD, PHD prescribe under Medicare Part D?

In 2024, Martin Thelin, MD, PHD had 15 Medicare Part D claims; the average among pediatric endocrinology physician prescribers was 105. 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.