Won-Tak Choi, M.D., PH.D.
Anatomic Pathology Physician · San Francisco, CA
Won-Tak Choi, M.D., PH.D. is an anatomic pathology physician with a practice address in San Francisco, California, and NPI 1275860918, issued on Nov 16, 2009. Check the license (California A132954, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Won-Tak Choi
- Credential
- M.D., PH.D.
- Primary taxonomy
- Anatomic Pathology Physician 207ZP0101X
- License number
- A132954 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave # M552, San Francisco, CA 94143
- Phone
- (415) 353-9533
- Enumerated
- Nov 16, 2009
- Record last updated
- Oct 22, 2024
- Medicare enrollment
- Enrolled (PECOS I20150707000560); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2009
- Entity
- Type 1 · individual
8 nearest anatomic pathology physician records → All 386 in California → Look up another NPI →
Verify Won-Tak Choi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A132954Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- 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).
Won-Tak Choi among 386 anatomic pathology physician records in California
Won-Tak Choi, M.D., PH.D. is one of 386 anatomic pathology physician records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 61% of them.
- NPI issued2009 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2009 · median 2000 among the 190 with a school on file
- Record last updated2024 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0101X 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 Physician providers in California
There are 386 anatomic pathology physician records in California.
All 386 in California → Every provider in San Francisco → Anatomic Pathology Physician nationwide →
The 8 anatomic pathology physician records with the nearest ZIP codes
- Abul Abbas, MBBSSan Francisco, CA 941431881652964
- Soo-Jin Cho, M.D./PH.D.San Francisco, CA 941431104079524
- James Grenert, MDSan Francisco, CA 941431174572390
- Andrew Horvai, MDSan Francisco, CA 941431891752309
- Grace Kim, MDSan Francisco, CA 941431447218599
- Steven Long, M.D.San Francisco, CA 941431194737908
- Aras Mattis, M.D., PH.D.San Francisco, CA 941431326374869
- James McKerrow, MDSan Francisco, CA 941431922066067
Common questions
What is Won-Tak Choi, M.D., PH.D.'s NPI number?
Won-Tak Choi, M.D., PH.D.'s National Provider Identifier (NPI) is 1275860918, issued on Nov 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Won-Tak Choi, M.D., PH.D. located?
The NPPES record lists a practice address at 505 Parnassus Ave # M552, San Francisco, CA, 94143. Phone: (415) 353-9533. Providers update this record themselves, so call before visiting.
How can I verify Won-Tak Choi, M.D., PH.D.'s license?
NPPES lists California license number A132954, 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 Won-Tak Choi, M.D., PH.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.