NPPES file of Aug 9, 2026

Vivian Tang, MD

Anatomic Pathology Physician · San Francisco, CA

Vivian Tang, MD is an anatomic pathology physician with a practice address in San Francisco, California, and NPI 1164908141, issued on Jul 13, 2018. Check the license (California A190113, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164908141
Name
Vivian Tang
Credential
MD
Primary taxonomy
Anatomic Pathology Physician 207ZP0101X
License number
A190113 CA
Self-reported in NPPES; status is on the state search
Practice location
1825 4TH St # L2181, San Francisco, CA 94143
Phone
(415) 353-7043
Enumerated
Jul 13, 2018
Record last updated
Jun 27, 2025
Medicare enrollment
Enrolled (PECOS I20250711002535); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 2020
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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Verify Vivian Tang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A190113
    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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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).

Vivian Tang among 386 anatomic pathology physician records in California

Vivian Tang, MD 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 2018, is newer than 84% of them.

  • NPI issued2018 · 84% of these records are older, 12% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 49% of these records are
  • Graduated2020 · median 2000 among the 190 with a school on file
  • Record last updated2025 · 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.

The 8 anatomic pathology physician records with the nearest ZIP codes

  1. Abul Abbas, MBBSSan Francisco, CA 941431881652964
  2. Soo-Jin Cho, M.D./PH.D.San Francisco, CA 941431104079524
  3. Won-Tak Choi, M.D., PH.D.San Francisco, CA 941431275860918
  4. James Grenert, MDSan Francisco, CA 941431174572390
  5. Andrew Horvai, MDSan Francisco, CA 941431891752309
  6. Grace Kim, MDSan Francisco, CA 941431447218599
  7. Steven Long, M.D.San Francisco, CA 941431194737908
  8. Aras Mattis, M.D., PH.D.San Francisco, CA 941431326374869

Common questions

What is Vivian Tang, MD's NPI number?

Vivian Tang, MD's National Provider Identifier (NPI) is 1164908141, issued on Jul 13, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Vivian Tang, MD located?

The NPPES record lists a practice address at 1825 4TH St # L2181, San Francisco, CA, 94143. Phone: (415) 353-7043. Providers update this record themselves, so call before visiting.

How can I verify Vivian Tang, MD's license?

NPPES lists California license number A190113, 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.

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.