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DR. ELIZABETH M TSAY O.D.
NPI 1306034269
Optometrist in San Dimas, CA

Active since October 04, 2007PECOS Enrolled
425 W BONITA AVE STE 110B, SAN DIMAS, CA 91773(909) 394-0462 Get Directions Write a Review

NPPES record last updated: October 24, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Elizabeth M Tsay O.d. NPPES

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

DR. ELIZABETH M TSAY O.D. (NPI 1306034269) is an individual optometrist in San Dimas, California, licensed in California (OPT13285T) and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306034269
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. ELIZABETH M TSAYCredential: O.D.
Location Address425 W BONITA AVE STE 110BSan Dimas, CA 91773-2543
Mailing AddressPo Box 206Claremont, CA 91711-0206 · (909) 446-2447
Phone(909) 394-0462
Sole ProprietorYes
Enumeration DateOctober 4, 2007
Last NPPES UpdateOctober 24, 2021
NPPES CertifiedOctober 24, 2021
✔ NPI 1306034269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · OPT13285T
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.
425 W BONITA AVE STE 110B, San Dimas, CA 91773
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Other Names 1

Other Name (5)Dr. Elizabeth M Tsay O.d.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elizabeth M Tsay O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91773 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VIONE WONG OD
Optometrist
425 W BONITA AVE STE 110B
SAN DIMAS, CA 91773
Los Angeles County (909) 394-0462
KELLIE-ANNE CHIEMI ISHII-KIM OD
Optometrist
425 W BONITA AVE STE 110B
SAN DIMAS, CA 91773
Los Angeles County (909) 394-0462
JULIE LAM O.D.
Optometrist
425 W BONITA AVE STE 110B
SAN DIMAS, CA 91773
Los Angeles County (909) 394-0462
DR. ASHLEY NAKAMURA O.D.
Optometrist
425 W BONITA AVE STE 110B
SAN DIMAS, CA 91773
Los Angeles County (909) 394-0462

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 Elizabeth Tsay's NPI number?

The NPI number for Elizabeth Tsay is 1306034269. It was assigned to this individual provider in the NPPES registry on October 4, 2007. The provider is also known as Dr. Elizabeth M Tsay O.D..

Where is Elizabeth Tsay located?

Elizabeth Tsay practices at 425 W Bonita Ave Ste 110B, San Dimas, CA 91773. The listed phone number is (909) 394-0462.

What is Elizabeth Tsay's specialty?

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

Is Elizabeth Tsay enrolled in Medicare?

Yes. Elizabeth Tsay is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Elizabeth Tsay was last updated on October 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.