PRIME PHYSICIANS PA
NPI 1891213633
Internal Medicine in Houston, TX

Q: What is Prime Physicians PA's NPI number?

The NPI number for Prime Physicians PA is 1891213633. It was assigned to this organization in the NPPES registry on August 31, 2017.

Q: What is Prime Physicians PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since August 31, 2017CLIA 45D2177649 · Waiver

3648 CYPRESS CREEK PKWY STE 240, HOUSTON, TX 77068(832) 604-9944(713) 424-4899 Get Directions Write a Review

NPPES record last updated: March 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 12, 2026, Dec 30, 2025, Jun 24, 2025 and 3 more (6 updates tracked since 2017).

On this page

About Prime Physicians Pa NPPES

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

PRIME PHYSICIANS PA (NPI 1891213633) is a healthcare organization registered as an internal medicine in Houston, Texas and active in the NPI registry since August 2017. The organization holds a CLIA Waiver certificate valid through January 14, 2028, maintains a secondary practice location in Stafford, and lists Minh Q Mai, Owner/md, as its authorized official.

NPPES Registry Identity

NPI1891213633

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NamePRIME PHYSICIANS PA

Location Address3648 CYPRESS CREEK PKWY STE 240Houston, TX 77068-3609

Mailing Address3648 Cypress Creek Pkwy Ste 240Houston, TX 77068-3609 · (832) 604-9944 · Fax (713) 424-4899

Phone(832) 604-9944

Fax(713) 424-4899

Organization SubpartNo

Authorized OfficialMinh Q MaiOwner/md · (832) 604-9944

Enumeration DateAugust 31, 2017

Last NPPES UpdateMarch 12, 20266 updates tracked since enumeration

NPPES CertifiedMarch 12, 2026

✔ NPI 1891213633 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

3648 CYPRESS CREEK PKWY STE 240, Houston, TX 77068

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Secondary Practice Location 1

Location 14807 Sugar Grove Blvd Ste 302Stafford, TX 77477-2654 · Phone (713) 999-2860 · Fax (713) 999-2699

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Prime Physicians Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Prime Physicians PA, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Minh Mai, M.D.

Internal Medicine

NPI 1427248970

3648 CYPRESS CREEK PKWY STE 240
Houston, TX 77068

(832) 604-9944

✔ PECOS✔ Accepts MedicareSame address

Rodolfo Mendez Cancel, MD

Internal Medicine

NPI 1649491648

5535 MEMORIAL DR F501
Houston, TX 77007

(713) 805-5870

✔ PECOS7.6 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D2177649

Prime Physicians, PA · Houston, TX

Active · expires Jan 14, 2028

CLIA Number45D2177649

Laboratory TypePhysician Office

Certificate Effective DateJanuary 15, 2026

Certificate Expiration DateJanuary 14, 2028

Laboratory DirectorMinh Q. Mai

Laboratory Phone(832) 604-9944

Laboratory LocationPrime Physicians, PA3648 Cypress Creek Parkway Ste 240, Houston, TX 77068

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Prime Physicians PA's NPI number?

The NPI number for Prime Physicians PA is 1891213633. It was assigned to this organization in the NPPES registry on August 31, 2017.

Where is Prime Physicians PA located?

Prime Physicians PA is located at 3648 Cypress Creek Pkwy Ste 240, Houston, TX 77068. The listed phone number is (832) 604-9944.

What is Prime Physicians PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Prime Physicians PA enrolled in Medicare?

Yes. Prime Physicians PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Prime Physicians PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Prime Physicians PA. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Prime Physicians PA hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2177649) is associated with this NPI, valid through January 14, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Prime Physicians PA accept?

Health plans from WellPoint list Prime Physicians PA 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 Prime Physicians PA was last updated on March 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.