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LILLIAN TSAI OD
NPI 1841831062
Optometrist in San Gabriel, CA

Active since September 30, 2019PECOS EnrolledAccepts Medicare Assignment
937 E LAS TUNAS DR STE A, SAN GABRIEL, CA 91776(626) 287-2020 Get Directions Write a Review

NPPES record last updated: March 9, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 9, 2023, Aug 10, 2021, Sep 30, 2019 (3 updates tracked since 2019).

About Lillian Tsai Od NPPES

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

LILLIAN TSAI OD (NPI 1841831062) is an individual optometrist in San Gabriel, California, licensed in California (34412TLG) and active in the NPI registry since September 2019. She is enrolled in Medicare PECOS and is a graduate of Illinois College Of Optometry At Chicago (2019).

NPPES Registry Identity

NPI1841831062
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameLILLIAN TSAICredential: OD
Location Address937 E LAS TUNAS DR STE ASan Gabriel, CA 91776-1600
Mailing Address937 E Las Tunas Dr Ste ASan Gabriel, CA 91776-1600
Phone(626) 287-2020
Sole ProprietorYes
Medical School CMSIllinois College Of Optometry At ChicagoGraduated 2019
Enumeration DateSeptember 30, 2019
Last NPPES UpdateMarch 9, 20233 updates tracked since enumeration
NPPES CertifiedMarch 9, 2023
✔ NPI 1841831062 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
Licenses✔ Licensed in CA · 34412TLG✔ Licensed in CA · 34412
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.
937 E LAS TUNAS DR STE A, San Gabriel, CA 91776
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Lillian Tsai Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062844616
PECOS Enrollment IDI20191120000092
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.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
50 services45 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
42 services34 patients
Photography of the retina 92250
Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.
28 services28 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
25 services23 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
25 services23 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91776 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 3

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

RAINA CHEUNG O.D.
Optometrist
937 E LAS TUNAS DR STE A
SAN GABRIEL, CA 91776
Los Angeles County (626) 287-2020
SZETO OPTOMETRIC CORPORATION
Optometrist
937 E LAS TUNAS DR STE A
SAN GABRIEL, CA 91776
Los Angeles County (626) 287-2020
RAINA CHEUNG, O.D., INC.
Optometrist
937 E LAS TUNAS DR STE A
SAN GABRIEL, CA 91776
Los Angeles County (626) 287-2020

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 Lillian Tsai's NPI number?

The NPI number for Lillian Tsai is 1841831062. It was assigned to this individual provider in the NPPES registry on September 30, 2019.

Where is Lillian Tsai located?

Lillian Tsai practices at 937 E Las Tunas Dr Ste A, San Gabriel, CA 91776. The listed phone number is (626) 287-2020.

What is Lillian Tsai's specialty?

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

Is Lillian Tsai enrolled in Medicare?

Yes. Lillian Tsai is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Lillian Tsai accept?

Health plans from Providence Health Plan list Lillian Tsai 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 Lillian Tsai was last updated on March 9, 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.