May Chau Chan, OPTOMETRY DOCTOR
Optometrist · Elk Grove, CA
May Chau Chan, OPTOMETRY DOCTOR is an optometrist with a practice address in Elk Grove, California, and NPI 1851425110, issued on Mar 16, 2007. Check the license (California 5642, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- May Chau Chan
- Credential
- OPTOMETRY DOCTOR
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 5642 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9684 Coney Island Cir, Elk Grove, CA 95758
- Phone
- (916) 421-7915
- Enumerated
- Mar 16, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (916) 421-8396
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Verify May Chau 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 5642Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $123.54
2 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.
May Chau Chan among 8,308 optometrist records in California
May Chau Chan, OPTOMETRY DOCTOR 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 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 46% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2007 · 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).
47 optometrist records list a practice address in Elk Grove
They are 47 of the 3,596 NPPES records with a practice address in Elk Grove, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Elk Grove → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Bradley Chin, O.D.Elk Grove, CA 957581649325564
- Bruce Chin, O.D.Elk Grove, CA 957581790830925
- Stephen Crowley, O.D.Elk Grove, CA 957581104973866
- Steven Frisby, O.D.Elk Grove, CA 957581407910615
- David Lee, O.D.Elk Grove, CA 957581508929407
- Roxanne Lee-Louie, O.D.Elk Grove, CA 957581598855652
- Marvin Neill, O.D.Elk Grove, CA 957581336216563
- Ami Shah, O.D.Elk Grove, CA 957581881665388
Common questions
What is May Chau Chan, OPTOMETRY DOCTOR's NPI number?
May Chau Chan, OPTOMETRY DOCTOR's National Provider Identifier (NPI) is 1851425110, issued on Mar 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is May Chau Chan, OPTOMETRY DOCTOR located?
The NPPES record lists a practice address at 9684 Coney Island Cir, Elk Grove, CA, 95758. Phone: (916) 421-7915. Providers update this record themselves, so call before visiting.
How can I verify May Chau Chan, OPTOMETRY DOCTOR's license?
NPPES lists California license number 5642, 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.
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.