Michael Y. Chew, O.D.
Optometrist · South San Francisco, CA
Michael Y. Chew, O.D. is an optometrist with a practice address in South San Francisco, California, and NPI 1093788572, issued on Feb 7, 2006. Check the license (California 9671, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Y. Chew
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 9671 CA
Self-reported in NPPES; status is on the state search - Practice location
- 988 EL Camino Real Ste 5, South San Francisco, CA 94080
- Phone
- (650) 866-4641
- Enumerated
- Feb 7, 2006
- Record last updated
- May 4, 2026
- Fax
- (650) 866-4643
- Medicare enrollment
- Enrolled (PECOS I20041103001327); accepts Medicare assignment
- Medical or professional school
- State University Of New York - State College Optometry, 1990
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 988 EL Camino Real Ste 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Nguyen, ODOptometrist1225652308
Verify Michael Y. Chew in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 9671Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average optometrist in 2024
18 Medicare Part D claims for 13 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
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: $1,809.82
39 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas 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.
Michael Y. Chew among 8,308 optometrist records in California
Michael Y. Chew, 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1990 · median 2008 among the 3,573 with a school on file
- Record last updated2026 · 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).
17 optometrist records list a practice address in South San Francisco
They are 17 of the 1,173 NPPES records with a practice address in South San Francisco, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in South San Francisco → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Christian Chew, ODSouth San Francisco, CA 940801174134373
- Kenneth Chiu, O.D.South San Francisco, CA 940801043376411
- Khanh Dao, ODSouth San Francisco, CA 940801275608143
- John Eng, O.D.South San Francisco, CA 940801104942127
- Marianne Florendo, ODSouth San Francisco, CA 940801447667621
- Joanne Gwo, O.D.South San Francisco, CA 940801083900336
- Tsungming Hung, O.D.South San Francisco, CA 940801750827374
- Letitia Lii, O.D.South San Francisco, CA 940801750429981
Common questions
What is Michael Y. Chew, O.D.'s NPI number?
Michael Y. Chew, O.D.'s National Provider Identifier (NPI) is 1093788572, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Y. Chew, O.D. located?
The NPPES record lists a practice address at 988 EL Camino Real Ste 5, South San Francisco, CA, 94080. Phone: (650) 866-4641. Providers update this record themselves, so call before visiting.
How can I verify Michael Y. Chew, O.D.'s license?
NPPES lists California license number 9671, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Y. Chew, O.D. prescribe under Medicare Part D?
In 2024, Michael Y. Chew, O.D. had 18 Medicare Part D claims for 13 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.