NPPES file of Aug 9, 2026

Nancy L. Carteron, M.D.

Rheumatology Physician · San Francisco, CA

Nancy L. Carteron, M.D. is a rheumatology physician with a practice address in San Francisco, California, and NPI 1669582458, issued on Aug 30, 2006. Check the license (California G52227, 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 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669582458
Name
Nancy L. Carteron
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G52227 CA
Self-reported in NPPES; status is on the state search
Practice location
2100 Webster St Ste 200, San Francisco, CA 94115
Phone
(415) 923-6534
Enumerated
Aug 30, 2006
Record last updated
Apr 15, 2011 (not updated in 15 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20101215000455); accepts Medicare assignment
Medical or professional school
Johns Hopkins University School Of Medicine, 1982
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.
Download card Updates feed

Also registered at 2100 Webster St Ste 200

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

  1. Geoffrey Quinn, M.D.Internal Medicine Physician1215975826
  2. Michael SmallThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1992817696

Verify Nancy L. Carteron in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G52227
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

The practice group's MIPS final score for 2023 (Medicare payment program): 74.5 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. Qualitynot scored (reweighted)
  2. Costout of 100 · 30%46.7
  3. Promoting interoperabilityout of 100 · 25%76.0
  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).

Industry payments in 2024: $13,499.91

13 payments; by number, the most common kind was travel and lodging; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nancy Carteron$13,500
  2. Specialty average$8,538

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. Regents OF The University OF California AT BerkeleyBerkeley, 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).

Nancy L. Carteron among 926 rheumatology physician records in California

Nancy L. Carteron, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1982 · median 2003 among the 641 with a school on file
  • Record last updated2011 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Ishita Aggarwal, MDSan Francisco, CA 941151518385699
  2. Benedict Chou, M.D.San Francisco, CA 941151770759375
  3. William Dibrielle, MDSan Francisco, CA 941151043483837
  4. Aileen Dillon, MB, BCHSan Francisco, CA 941151912071523
  5. Walford Fessel, MDSan Francisco, CA 941151649344961
  6. Jeffrey Fong, MDSan Francisco, CA 941151093893695
  7. Shelley Marder, M.D.San Francisco, CA 941151184648636
  8. Kerstin Morehead, M.D.San Francisco, CA 941151235244963

Common questions

What is Nancy L. Carteron, M.D.'s NPI number?

Nancy L. Carteron, M.D.'s National Provider Identifier (NPI) is 1669582458, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nancy L. Carteron, M.D. located?

The NPPES record lists a practice address at 2100 Webster St Ste 200, San Francisco, CA, 94115. Phone: (415) 923-6534. Providers update this record themselves, so call before visiting.

How can I verify Nancy L. Carteron, M.D.'s license?

NPPES lists California license number G52227, 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 Nancy L. Carteron, M.D.'s MIPS final score?

The 2023 MIPS final score is 74.5 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.

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.