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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. TUYETHA DUC MAI O.D.
NPI 1619939980
Optometrist in Palo Alto, CA

Active since April 03, 2006PECOS Enrolled
605 STANFORD SHOPPING CTR, PALO ALTO, CA 94304(650) 327-2840(650) 327-2843 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Jul 21, 2022 (2 updates tracked since 2022).

About Dr. Tuyetha Duc Mai O.d. NPPES

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

DR. TUYETHA DUC MAI O.D. (NPI 1619939980) is an individual optometrist in Palo Alto, California, licensed in California (12389T) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619939980
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. TUYETHA DUC MAICredential: O.D.
Location Address605 STANFORD SHOPPING CTRPalo Alto, CA 94304-1403
Mailing Address605 Stanford Shopping CtrPalo Alto, CA 94304-1403 · (650) 327-2840 · Fax (650) 327-2843
Phone(650) 327-2840
Fax(650) 327-2843
Sole ProprietorNo
Enumeration DateApril 3, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1619939980 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 · 12389T
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.
605 STANFORD SHOPPING CTR, Palo Alto, CA 94304
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Other Names 1

Professional Name (2)Dr. Monique Tuyetha Duc Mai O.d.

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 (PECOS)

Dr. Tuyetha Duc Mai 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 94304 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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

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

PROSPECTACLES OPTOMETRY INC.
Optometrist
605 STANFORD SHOPPING CTR
PALO ALTO, CA 94304
Santa Clara County (650) 327-2840

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 Tuyetha Mai's NPI number?

The NPI number for Tuyetha Mai is 1619939980. It was assigned to this individual provider in the NPPES registry on April 3, 2006. The provider is also known as Dr. Monique Tuyetha Duc Mai O.D..

Where is Tuyetha Mai located?

Tuyetha Mai practices at 605 Stanford Shopping Ctr, Palo Alto, CA 94304. The listed phone number is (650) 327-2840.

What is Tuyetha Mai's specialty?

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

Is Tuyetha Mai enrolled in Medicare?

Yes. Tuyetha Mai is registered in the Medicare PECOS enrollment system.

What insurance does Tuyetha Mai accept?

Health plans from Providence Health Plan list Tuyetha Mai 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 Tuyetha Mai was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.