What is Mai Tsai's NPI number?

Mai Tsai's National Provider Identifier (NPI) is 1477792398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mai Tsai's specialty?

Mai Tsai is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is Mai Tsai located?

Mai Tsai's practice location on file with NPPES is 5979 E Grant Rd Ste 107, Tucson, AZ 85712-2368.

What is Mai Tsai's phone number?

The practice phone number listed in the NPPES registry for Mai Tsai is (520) 989-1166.

Does Mai Tsai accept Medicare?

Mai Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mai Tsai's NPI active?

Yes — Mai Tsai's NPI (1477792398) is active in the NPPES registry as of the last update on 2025-04-03.

IndividualActiveAccepts Medicare

Mai Tsai, O.D.

NPI 1477792398 · Optometrist · Tucson, AZ

Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Mai Tsai, O.D. is a Optometrist provider in Tucson, AZ (NPI 1477792398).

Provider details

NPI number: 1477792398
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Female
Sole proprietor: No
License: 1719 (AZ)

Specialties & taxonomies

OptometristPrimary152W00000XLicense 1719 (AZ)
Eye and Vision Services Providers

Profile Score

Established profile(66/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
17 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
12 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Problem Focused Exam of Visual System92012	12	$90

Typical Medicare-allowed amounts for these services range $90–$90 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Latanoprost	211	81
Prednisolone Acetate	127	119
Timolol Maleate	127	47
Ketorolac Tromethamine	115	107
Bimatoprostbrand: Lumigan	60	26
Brimonidine Tartrate	54	22
Brinzolamide/Brimonidine Tartbrand: Simbrinza	49	13

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$1,062 across 22 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Practice location

5979 E Grant Rd Ste 107

Tucson, AZ 85712-2368

Phone: (520) 989-1166

Street-level locationGet directions

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Mailing address