Kathy Mao, O.D.
Optometrist · Santa Ana, CA
Kathy Mao, O.D. is an optometrist with a practice address in Santa Ana, California, and NPI 1053830158, issued on Sep 11, 2017. Check the license (California OPT33828-TLG, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathy Mao
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT33828-TLG CA
Self-reported in NPPES; status is on the state search - Practice location
- 1206 E 17TH St Ste 101, Santa Ana, CA 92701
- Phone
- (714) 352-2911
- Enumerated
- Sep 11, 2017
- Record last updated
- Aug 21, 2025
- Fax
- (714) 352-2903
- Medicare enrollment
- Enrolled (PECOS I20180223001709); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1206 E 17TH St Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Athena Alexander, M.D.Internal Medicine Physician1225417322
- Susan Alvarado Ruiz, RNCommunity Health Registered Nurse1508783218
- Karyna CandelarioSocial Worker1780364349
- Mauricio Cardenas, DDSDentist1033680186
- Himelda Churchill, PA-CPhysician Assistant1912472747
- Crystal Duarte, ACSWClinical Social Worker1912645367
Verify Kathy Mao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT33828-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
20% fewer Medicare Part D claims than the average optometrist in 2024
221 Medicare Part D claims for 87 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 71% of claims.
Most prescribed
- Latanoprost60 claims
- Cyclosporine31 claims
- Xiidra30 claims
- Restasis24 claims
- Dorzolamide-Timolol13 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: $237.22
10 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.
Bills Medicare through one group practice
- Serve The People, Inc.Santa Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathy Mao among 8,308 optometrist records in California
Kathy Mao, 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 2017, is newer than 76% of them.
- NPI issued2017 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2017 · median 2008 among the 3,573 with a school on file
- Record last updated2025 · 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 Santa Ana → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Jon Kendall, ODSanta Ana, CA 927011861606402
- Prashna Mistry, O.D.Santa Ana, CA 927011629698642
- Sulkyung Na, O.D.Santa Ana, CA 927011568551125
- Lawrence Sieve, O.D.Santa Ana, CA 927011225443732
- Tracy Tran, O.D.Santa Ana, CA 927011568572865
- Quan Tran, O.D.Santa Ana, CA 927011518019140
- Nhu Ly, O.D.Santa Ana, CA 927031114252954
- Diana Nguyen, O. D.Santa Ana, CA 927031649499229
Common questions
What is Kathy Mao, O.D.'s NPI number?
Kathy Mao, O.D.'s National Provider Identifier (NPI) is 1053830158, issued on Sep 11, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Mao, O.D. located?
The NPPES record lists a practice address at 1206 E 17TH St Ste 101, Santa Ana, CA, 92701. Phone: (714) 352-2911. Providers update this record themselves, so call before visiting.
How can I verify Kathy Mao, O.D.'s license?
NPPES lists California license number OPT33828-TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kathy Mao, O.D. prescribe under Medicare Part D?
In 2024, Kathy Mao, O.D. had 221 Medicare Part D claims for 87 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.