NPPES file of Aug 9, 2026

Vivian Ling

Family Medicine Physician · San Francisco, CA

Vivian Ling is a family medicine physician with a practice address in San Francisco, California, and NPI 1992455406, issued on Mar 27, 2022. Check the license (California A189426, 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
1992455406
Name
Vivian Ling
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A189426 CA
Self-reported in NPPES; status is on the state search
Practice location
1001 Potrero Ave Bldg 80-83, San Francisco, CA 94110
Phone
(628) 206-5252
Enumerated
Mar 27, 2022
Record last updated
Oct 21, 2025
Medicare enrollment
Enrolled (PECOS I20250924003916); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 2022
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 1001 Potrero Ave Bldg 80-83

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

  1. Maria AcevedoStudent in an Organized Health Care Education/Training Program1548955248
  2. Nana-Adwoa Agyarkowah, MDStudent in an Organized Health Care Education/Training Program1285484691
  3. Norman ArcherStudent in an Organized Health Care Education/Training Program1124879176
  4. Lily BarnardFamily Medicine Physician1386272573
  5. Melissa CalicaStudent in an Organized Health Care Education/Training Program1922781574
  6. Mariam CarsonStudent in an Organized Health Care Education/Training Program1275472441

Verify Vivian Ling in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A189426
    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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Bills Medicare through 2 group practices

  1. Pacific Inpatient Medical GroupSan Francisco, CA
  2. University OF California Sfgh Medical GroupSan Francisco, CA

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

Vivian Ling among 17,133 family medicine physician records in California

Vivian Ling is one of 17,133 family medicine 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 2022, is newer than 94% of them.

  • NPI issued2022 · 94% of these records are older, 3% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2022 · median 2005 among the 10,652 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Medicine Physician providers in California

There are 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Joaquin Barahona, M. D.San Francisco, CA 941101205895133
  2. Luis Bonilla, MDSan Francisco, CA 941101629019708
  3. Christopher Bositis, MDSan Francisco, CA 941101427054493
  4. Romilda Foresti-Lorente, MDSan Francisco, CA 941101164455374
  5. Steven Lawton, MDSan Francisco, CA 941101366486748
  6. Todd May, MDSan Francisco, CA 941101679528335
  7. Pooja Mittal, DOSan Francisco, CA 941101215916200
  8. David Nidorf, MDSan Francisco, CA 941101336186121

Common questions

What is Vivian Ling's NPI number?

Vivian Ling's National Provider Identifier (NPI) is 1992455406, issued on Mar 27, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Vivian Ling located?

The NPPES record lists a practice address at 1001 Potrero Ave Bldg 80-83, San Francisco, CA, 94110. Phone: (628) 206-5252. Providers update this record themselves, so call before visiting.

How can I verify Vivian Ling's license?

NPPES lists California license number A189426, 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.