NPPES file of Aug 9, 2026

Edward Chapin Thornborrow, MD PHD

Anatomic Pathology & Clinical Pathology Physician · San Francisco, CA

Edward Chapin Thornborrow, MD PHD is an anatomic pathology & clinical pathology physician with a practice address in San Francisco, California, and NPI 1316067044, issued on Mar 29, 2007. Check the license (California A92413, 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
1316067044
Name
Edward Chapin Thornborrow
Credential
MD PHD
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
A92413 CA
Self-reported in NPPES; status is on the state search
Practice location
Ucsf, San Francisco, CA 94143
Phone
(415) 353-7359
Enumerated
Mar 29, 2007
Record last updated
Aug 31, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(415) 353-7354
Medicare enrollment
Enrolled (PECOS I20090804000721); accepts Medicare assignment
Medical or professional school
Icahn School Of Medicine At Mount Sinai, 2003
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 Ucsf

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

  1. Ryan Gill, M.D., PH.D.Anatomic Pathology & Clinical Pathology Physician1992920649
  2. Martha Kennedy, M.D.Endocrinology, Diabetes & Metabolism Physician1982651022
  3. Bruce Miller, MDHospice and Palliative Medicine (Internal Medicine) Physician1376598920
  4. Mariyam Saviour, BSC (HONS), MBCHBNeurocritical Care Physician1568037711
  5. Lisa Vail, M.D.Internal Medicine Physician1023191285

Verify Edward Chapin Thornborrow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A92413
    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): 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).

Bills Medicare through one group practice

  1. 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).

Edward Chapin Thornborrow among 1,554 anatomic pathology & clinical pathology physician records in California

Edward Chapin Thornborrow, MD PHD is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.

  • NPI issued2007 · 43% of these records are older, 43% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2003 · median 2003 among the 891 with a school on file
  • Record last updated2007 · 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 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Frederick Baehner, MDSan Francisco, CA 941431326091208
  2. Alexander Borowsky, M.D.San Francisco, CA 941431891777512
  3. Katharine BradySan Francisco, CA 941431265476196
  4. Yunn-Yi Chen, MDSan Francisco, CA 941431841245966
  5. Mamatha Chivukula, MDSan Francisco, CA 941431750353280
  6. Linda Ferrell, MDSan Francisco, CA 941431730137126
  7. Sanjay Kakar, MDSan Francisco, CA 941431235187634
  8. Marta Margeta, MDSan Francisco, CA 941431477510626

Common questions

What is Edward Chapin Thornborrow, MD PHD's NPI number?

Edward Chapin Thornborrow, MD PHD's National Provider Identifier (NPI) is 1316067044, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Edward Chapin Thornborrow, MD PHD located?

The NPPES record lists a practice address at Ucsf, San Francisco, CA, 94143. Phone: (415) 353-7359. Providers update this record themselves, so call before visiting.

How can I verify Edward Chapin Thornborrow, MD PHD's license?

NPPES lists California license number A92413, 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 Edward Chapin Thornborrow, MD PHD'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.