What is Marissa Tsao's NPI number?

Marissa Tsao's National Provider Identifier (NPI) is 1487901328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marissa Tsao's specialty?

Marissa Tsao is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).

Where is Marissa Tsao located?

Marissa Tsao's practice location on file with NPPES is 6441 High Star Dr, Houston, TX 77074.

What is Marissa Tsao's phone number?

The practice phone number listed in the NPPES registry for Marissa Tsao is (832) 548-5000.

Does Marissa Tsao accept Medicare?

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

Is Marissa Tsao's NPI active?

Yes — Marissa Tsao's NPI (1487901328) is active in the NPPES registry as of the last update on 2019-07-23.

IndividualActiveAccepts Medicare

Marissa Tsao, M.D.

NPI 1487901328 · Obstetrics & Gynecology Physician · Houston, TX

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

Marissa Tsao, M.D. is a Obstetrics & Gynecology Physician provider in Houston, TX (NPI 1487901328).

Provider details

NPI number: 1487901328
Entity type: Individual
Primary specialty: Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Female
Sole proprietor: Yes
License: Q7492 (TX)

Specialties & taxonomies

Obstetrics & Gynecology PhysicianPrimary207V00000XLicense Q7492 (TX)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(88/100 index)

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

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
5 documented practice locations

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 methodology.

Practice location

6441 High Star Dr

Houston, TX 77074

Phone: (832) 548-5000

Street-level locationGet directions

More TX providers

Mailing address

Po Box 66308

Houston, TX 77266-6308

Additional practice locations (4)

9645 Barker Cypress Rd Ste 100
Cypress, TX 77433-5292
Phone: (281) 894-2900
Fax: (832) 604-7604
27150 Highway 290 Unit 500
Cypress, TX 77433-4930
Phone: (832) 237-4200
Fax: (832) 604-7604
10680 Jones Rd Ste 600
Houston, TX 77065-4295
Phone: (281) 477-0417
Fax: (832) 604-7604
10680 Jones Rd Ste 600
Houston, TX 77065-4295
Phone: (281) 477-0417
Fax: (832) 604-7604

Enumerated: 2012-08-09
Last updated: 2019-07-23

Frequently asked questions

What is Marissa Tsao's NPI number?: Marissa Tsao's National Provider Identifier (NPI) is 1487901328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Marissa Tsao's specialty?: Marissa Tsao is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
Where is Marissa Tsao located?: Marissa Tsao's practice location on file with NPPES is 6441 High Star Dr, Houston, TX 77074.
What is Marissa Tsao's phone number?: The practice phone number listed in the NPPES registry for Marissa Tsao is (832) 548-5000.
Does Marissa Tsao accept Medicare?: Marissa Tsao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Marissa Tsao's NPI active?: Yes — Marissa Tsao's NPI (1487901328) is active in the NPPES registry as of the last update on 2019-07-23.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.