Maggie Kam Chan, O.D.
Optometrist · San Francisco, CA
Maggie Kam Chan, O.D. is an optometrist with a practice address in San Francisco, California, and NPI 1801245949, issued on Jun 9, 2016. Check the license (California 33391, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maggie Kam Chan
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 33391 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Union St, San Francisco, CA 94123
- Phone
- (415) 561-9948
- Enumerated
- Jun 9, 2016
- Record last updated
- Feb 11, 2022
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 2100 Union St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vivian Huynh, ODOptometrist1861208886
- Rahul Sud, O.D.Optometrist1164863544
Verify Maggie Kam 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 33391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average optometrist in 2024
106 Medicare Part D claims for 43 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Latanoprost62 claims
- Dorzolamide-Timolol15 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: $15.86
1 payment: food and beverage; the largest payer was RxSight 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.
Maggie Kam Chan among 8,308 optometrist records in California
Maggie Kam Chan, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Michelle Blas, O.D.San Francisco, CA 941231982618682
- Vivian Huynh, ODSan Francisco, CA 941231861208886
- Jeffrey Rich, O.D.San Francisco, CA 941231295820785
- Rahul Sud, O.D.San Francisco, CA 941231164863544
- Lucia Zhu, ODSan Francisco, CA 941231124503008
- Selena Chan, O.D.San Francisco, CA 941221215063953
- Jennifer Ding, ODSan Francisco, CA 941221003337486
- Bruce Dong, OPTOMETRISTSan Francisco, CA 941221003997552
Common questions
What is Maggie Kam Chan, O.D.'s NPI number?
Maggie Kam Chan, O.D.'s National Provider Identifier (NPI) is 1801245949, issued on Jun 9, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Maggie Kam Chan, O.D. located?
The NPPES record lists a practice address at 2100 Union St, San Francisco, CA, 94123. Phone: (415) 561-9948. Providers update this record themselves, so call before visiting.
How can I verify Maggie Kam Chan, O.D.'s license?
NPPES lists California license number 33391, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Maggie Kam Chan, O.D. prescribe under Medicare Part D?
In 2024, Maggie Kam Chan, O.D. had 106 Medicare Part D claims for 43 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.