Gene Mah, OD
Optometrist · Anaheim, CA
Gene Mah, OD is an optometrist with a practice address in Anaheim, California, and NPI 1811045701, issued on Jan 8, 2007. Check the license (California OPT6736TPA, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gene Mah
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT6736TPA CA
Self-reported in NPPES; status is on the state search - Practice location
- 441 N Lakeview Ave, Anaheim, CA 92807
- Phone
- (888) 988-2800
- Enumerated
- Jan 8, 2007
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050107000772); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 1979
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 441 N Lakeview Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gene Mah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT6736TPACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average optometrist in 2024
30 Medicare Part D claims for 16 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 57% of claims.
Most prescribed
- Cyclosporine11 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupMission Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gene Mah among 8,308 optometrist records in California
Gene Mah, OD 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 fileYes · 43% of these records are
- Graduated1979 · median 2008 among the 3,573 with a school on file
- Record last updated2021 · 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).
115 optometrist records list a practice address in Anaheim
They are 115 of the 9,018 NPPES records with a practice address in Anaheim, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Anaheim → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Harry Charm, ODAnaheim Hills, CA 928071144215575
- Robert Downs, O.D.Anaheim, CA 928071093899817
- Catherine Heyman, ODAnaheim, CA 928071215030622
- Edward Kimmel, ODAnaheim, CA 928071801963665
- George Kusztyk, ODAnaheim, CA 928071780755678
- Ronald Lacroix, O.D.Anaheim, CA 928071548333560
- Dawn Lam, O.D.Anaheim, CA 928071720081029
- Gary Lovcik, O.D.Anaheim Hills, CA 928071427028562
Common questions
What is Gene Mah, OD's NPI number?
Gene Mah, OD's National Provider Identifier (NPI) is 1811045701, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gene Mah, OD located?
The NPPES record lists a practice address at 441 N Lakeview Ave, Anaheim, CA, 92807. Phone: (888) 988-2800. Providers update this record themselves, so call before visiting.
How can I verify Gene Mah, OD's license?
NPPES lists California license number OPT6736TPA, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gene Mah, OD prescribe under Medicare Part D?
In 2024, Gene Mah, OD had 30 Medicare Part D claims for 16 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.