NPPES file of Aug 9, 2026

Michael Ling Chang, OD

Optometrist · San Francisco, CA

Michael Ling Chang, OD is an optometrist with a practice address in San Francisco, California, and NPI 1811792435, issued on Feb 18, 2025. Check the license (California OPT35749, as entered in NPPES) with the California board that licenses this profession; 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
1811792435
Name
Michael Ling Chang
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
OPT35749 CA
Self-reported in NPPES; status is on the state search
Practice location
490 Illinois St, San Francisco, CA 94158
Phone
(415) 353-2800
Enumerated
Feb 18, 2025
Record last updated
Aug 15, 2025
Medicare enrollment
Enrolled (PECOS I20250616001041); accepts Medicare assignment
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 490 Illinois St

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

  1. Sugeile Benavidez QuezadaLicensed Vocational Nurse1285594531
  2. Samantha Chan, ODOptometrist1861179806
  3. Tiffany Chen, OD, MSOptometrist1114601465
  4. Adrienne Coulter, ODOptometrist1447923073
  5. William Doan Nguyen, ODOptometrist1689564486
  6. Caroline Estes-Nore, MDStudent in an Organized Health Care Education/Training Program1760187769

Verify Michael Ling Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license OPT35749    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
Find 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 one group practice

  1. Ucsf Medical Group Business ServicesSan Francisco, CA

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

Optometrist providers in California

There are 8,308 optometrist records in California.

All 8,308 in California → Every provider in San Francisco →

Other optometrist records in California

  1. Douglas Aaseby, O.D.El Dorado Hills, CA1962715961
  2. Saloumeh Abadi, ODSanta Monica, CA1699258756
  3. Davoud AbbasiFillmore, CA1902361678
  4. Christopher Abbott, O.D.Santee, CA1417936220
  5. Sara Abboud, ODAlbany, CA1649052846
  6. Ghezal Abdali, O.D.Tustin, CA1770688640
  7. Nahid Abdali, O.D.San Ramon, CA1700210242
  8. Yasmeen AbdelfattahIrvine, CA1417786617
  9. Marina Abdou, ODUpland, CA1356017321
  10. Angela Abe, OPTModesto, CA1336108885

Common questions

What is Michael Ling Chang, OD's NPI number?

Michael Ling Chang, OD's National Provider Identifier (NPI) is 1811792435, issued on Feb 18, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Michael Ling Chang, OD located?

The NPPES record lists a practice address at 490 Illinois St, San Francisco, CA, 94158. Phone: (415) 353-2800. Providers update this record themselves, so call before visiting.

How can I verify Michael Ling Chang, OD's license?

NPPES lists California license number OPT35749, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.