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KATHLEEN MAI, O.D., OPTOMETRY CORP
NPI 1730879891
Optometrist in Castro Valley, CA

Active since May 11, 2023
3550 CASTRO VALLEY BLVD, CASTRO VALLEY, CA 94546(510) 581-1680 Get Directions Write a Review

NPPES record last updated: May 11, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Kathleen Mai, O.d., Optometry Corp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHLEEN MAI, O.D., OPTOMETRY CORP (NPI 1730879891) is a healthcare organization registered as an optometrist in Castro Valley, California and active in the NPI registry since May 2023. The organization lists Kathleen Mai, Optometrist, as its authorized official.

NPPES Registry Identity

NPI1730879891
Entity TypeOrganization
Primary Taxonomy152W00000X
Legal Business NameKATHLEEN MAI, O.D., OPTOMETRY CORP
Location Address3550 CASTRO VALLEY BLVDCastro Valley, CA 94546-4402
Mailing Address14603 Merced StSan Leandro, CA 94579-1058
Phone(510) 581-1680
Organization SubpartNo
Authorized OfficialKathleen MaiOptometrist · (510) 388-7379
Enumeration DateMay 11, 2023
NPPES CertifiedMay 11, 2023
✔ NPI 1730879891 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
3550 CASTRO VALLEY BLVD, Castro Valley, CA 94546
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, BlueCross BlueShield of Tennessee.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathleen Mai, O.d., Optometry Corp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Kathleen Mai, O.D., Optometry Corp, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Kaiyun Mai, O.D.
Optometry
NPI 1730436643
3550 CASTRO VALLEY BLVD
Castro Valley, CA 94546
(510) 581-1680
✔ PECOS✔ Accepts MedicareSame address
David Border, OD
Optometry
NPI 1003171661
3960 MITCHELL RD
Ceres, CA 95307
(209) 202-3242
✔ PECOS63 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kathleen Mai, O.D., Optometry Corp's NPI number?

The NPI number for Kathleen Mai, O.D., Optometry Corp is 1730879891. It was assigned to this organization in the NPPES registry on May 11, 2023.

Where is Kathleen Mai, O.D., Optometry Corp located?

Kathleen Mai, O.D., Optometry Corp is located at 3550 Castro Valley Blvd, Castro Valley, CA 94546. The listed phone number is (510) 581-1680.

What is Kathleen Mai, O.D., Optometry Corp's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Kathleen Mai, O.D., Optometry Corp enrolled in Medicare?

Yes. Kathleen Mai, O.D., Optometry Corp is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Kathleen Mai, O.D., Optometry Corp?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Optometry, reassign their Medicare billing to Kathleen Mai, O.D., Optometry Corp. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Kathleen Mai, O.D., Optometry Corp accept?

Health plans from Anthem Blue Cross and Blue Shield and BlueCross BlueShield of Tennessee list Kathleen Mai, O.D., Optometry Corp as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Kathleen Mai, O.D., Optometry Corp was last updated on May 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.