Kaiyun Kathleen Mai, O.D.
Optometrist · Castro Valley, CA
Kaiyun Kathleen Mai, O.D. is an optometrist with a practice address in Castro Valley, California, and NPI 1730436643, issued on Aug 9, 2012. Check the license (California 14443, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kaiyun Kathleen Mai
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 14443 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3550 Castro Valley Blvd, Castro Valley, CA 94546
- Phone
- (510) 581-1680
- Enumerated
- Aug 9, 2012
- Record last updated
- Jun 11, 2023
- Medicare enrollment
- Enrolled (PECOS I20230808000389); accepts Medicare assignment
- Medical or professional school
- University Of California - School Of Optometry, 2012
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 3550 Castro Valley Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John LiuOptometrist1114949419
- Mary Nguyen, O.D.Optometrist1285981274
Verify Kaiyun Kathleen Mai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 14443Check 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: $15.03
1 payment: food and beverage; the largest payer was Johnson & Johnson Vision Care, 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.
Kaiyun Kathleen Mai among 8,308 optometrist records in California
Kaiyun Kathleen Mai, 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 2012, is newer than 64% of them.
- NPI issued2012 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2012 · median 2008 among the 3,573 with a school on file
- Record last updated2023 · 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).
24 optometrist records list a practice address in Castro Valley
They are 24 of the 999 NPPES records with a practice address in Castro Valley, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Castro Valley → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Christina Atkinson, O.D.Castro Valley, CA 945461619981792
- Marc Dea, ODCastro Valley, CA 945461174592646
- Sampson Fong, O. D.Castro Valley, CA 945461396861522
- Stella Levin, O.D.Castro Valley, CA 945461235197138
- Yuanbing Liao, O.D.Castro Valley, CA 945461497060875
- John LiuCastro Valley, CA 945461114949419
- John Nelson, O.D.Castro Valley, CA 945461922095082
- Mary Nguyen, O.D.Castro Valley, CA 945461285981274
Common questions
What is Kaiyun Kathleen Mai, O.D.'s NPI number?
Kaiyun Kathleen Mai, O.D.'s National Provider Identifier (NPI) is 1730436643, issued on Aug 9, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Kaiyun Kathleen Mai, O.D. located?
The NPPES record lists a practice address at 3550 Castro Valley Blvd, Castro Valley, CA, 94546. Phone: (510) 581-1680. Providers update this record themselves, so call before visiting.
How can I verify Kaiyun Kathleen Mai, O.D.'s license?
NPPES lists California license number 14443, 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.