Samantha Wenyan Chan, OD
Optometrist · San Francisco, CA
Samantha Wenyan Chan, OD is an optometrist with a practice address in San Francisco, California, and NPI 1861179806, issued on Jun 30, 2023. Check the license (California OPT35468-TLG, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Samantha Wenyan Chan
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT35468-TLG 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
- Jun 30, 2023
- Record last updated
- Sep 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20240829004362); accepts Medicare assignment
- Medical or professional school
- University Of California - School Of Optometry, 2023
- Entity
- Type 1 · individual
Also registered at 490 Illinois St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sugeile Benavidez QuezadaLicensed Vocational Nurse1285594531
- Michael Chang, ODOptometrist1811792435
- Tiffany Chen, OD, MSOptometrist1114601465
- Adrienne Coulter, ODOptometrist1447923073
- William Doan Nguyen, ODOptometrist1689564486
- Caroline Estes-Nore, MDStudent in an Organized Health Care Education/Training Program1760187769
Verify Samantha Wenyan Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT35468-TLGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average optometrist in 2024
40 Medicare Part D claims for 26 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 60% of claims.
Most prescribed
- Latanoprost11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $258.22
7 payments; by number, the most common kind was food and beverage; the largest payer was Oyster Point Pharma, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ucsf Medical Group Business ServicesBerkeley, 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.
Other optometrist records in California
- Douglas Aaseby, O.D.El Dorado Hills, CA1962715961
- Saloumeh Abadi, ODSanta Monica, CA1699258756
- Davoud AbbasiFillmore, CA1902361678
- Christopher Abbott, O.D.Santee, CA1417936220
- Sara Abboud, ODAlbany, CA1649052846
- Ghezal Abdali, O.D.Tustin, CA1770688640
- Nahid Abdali, O.D.San Ramon, CA1700210242
- Yasmeen AbdelfattahIrvine, CA1417786617
- Marina Abdou, ODUpland, CA1356017321
- Angela Abe, OPTModesto, CA1336108885
Common questions
What is Samantha Wenyan Chan, OD's NPI number?
Samantha Wenyan Chan, OD's National Provider Identifier (NPI) is 1861179806, issued on Jun 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Samantha Wenyan Chan, 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 Samantha Wenyan Chan, OD's license?
NPPES lists California license number OPT35468-TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Samantha Wenyan Chan, OD prescribe under Medicare Part D?
In 2024, Samantha Wenyan Chan, OD had 40 Medicare Part D claims for 26 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions 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.
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.