DR. MARISSA NIENJIA TSAO M.D.
NPI 1487901328
Obstetrics & Gynecology in Houston, TX

Q: What is Marissa Tsao's NPI number?

The NPI number for Marissa Tsao is 1487901328. It was assigned to this individual provider in the NPPES registry on August 9, 2012.

Q: What is Marissa Tsao's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Marissa Tsao was last updated on July 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since August 09, 2012PECOS Enrolled

6441 HIGH STAR DR, HOUSTON, TX 77074(832) 548-5000 Get Directions Write a Review

NPPES record last updated: July 23, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 23, 2019, Mar 17, 2018, Feb 23, 2018 and 2 more (5 updates tracked since 2016).

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About Dr. Marissa Nienjia Tsao M.d. NPPES

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

DR. MARISSA NIENJIA TSAO M.D. (NPI 1487901328) is an individual obstetrics & gynecology provider in Houston, Texas, licensed in Texas (Q7492) and active in the NPI registry since August 2012. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1487901328

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. MARISSA NIENJIA TSAOCredential: M.D.

Location Address6441 HIGH STAR DRHouston, TX 77074

Mailing AddressPo Box 66308Houston, TX 77266-6308 · (832) 548-5000

Phone(832) 548-5000

Sole ProprietorYes

Enumeration DateAugust 9, 2012

Last NPPES UpdateJuly 23, 20195 updates tracked since enumeration

✔ NPI 1487901328 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in TX · Q7492

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

6441 HIGH STAR DR, Houston, TX 77074

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Secondary Practice Locations 3

Location 19645 Barker Cypress Rd Ste 100Cypress, TX 77433-5292 · Phone (281) 894-2900 · Fax (832) 604-7604

Location 227150 Highway 290 Unit 500Cypress, TX 77433-4930 · Phone (832) 237-4200 · Fax (832) 604-7604

Location 310680 Jones Rd Ste 600Houston, TX 77065-4295 · Phone (281) 477-0417 ext. 208 · Fax (832) 604-7604

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marissa Nienjia Tsao M.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.

Medicare Billing Reassignments

Medicare enrollment records show Marissa Tsao reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Community Health Services, Inc

6.5 mi

Federally Qualified Health Center (FQHC)

1415 CALIFORNIA ST
Houston, TX 77006

Reassigned Medicare billing, Texas enrollment
402 clinicians in this Medicare group

NPI 1679524961 (832) 548-5000

Fairfield Ob-Gyn PLLC

26 mi

Obstetrics & Gynecology

27150 US HIGHWAY 290, SUITE 500
Cypress, TX 77433

Reassigned Medicare billing, Texas enrollment
8 clinicians in this Medicare group

NPI 1871987966 (832) 237-4200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77074 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

$134.06 typical visit price

range $58.24 – $176.98

Typical copayment $33.51 (range $14.56 – $44.24)

Most-billed visit code 99204

Established Patient

$72.62 typical visit price

range $18.60 – $143.93

Typical copayment $18.15 (range $4.65 – $35.98)

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 20

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

DEBBIE LUCRECIA PREN FNP

Nurse Practitioner (Family)