MICHAEL P. MACRIS, M.D. P.A.
NPI 1033328240
Specialist/Technologist Cardiovascular - Vascular Specialist in Houston, TX

Q: What is Michael P. Macris, M.D. P.A.'s NPI number?

The NPI number for Michael P. Macris, M.D. P.A. is 1033328240. It was assigned to this organization in the NPPES registry on May 22, 2007.

Q: What is Michael P. Macris, M.D. P.A.'s specialty?

The primary specialty registered for this NPI is Specialist/Technologist Cardiovascular, specializing in Vascular Specialist, with taxonomy code 246XC2903X.

Active since May 22, 2007

1631 NORTH LOOP W STE 240, HOUSTON, TX 77008(713) 465-7979 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

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About Michael P. Macris, M.d. P.a. NPPES

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

MICHAEL P. MACRIS, M.D. P.A. (NPI 1033328240) is a healthcare organization registered as a vascular specialist in Houston, Texas and active in the NPI registry since May 2007. The organization lists Michael Peter Macris, Doctor, as its authorized official.

NPPES Registry Identity

NPI1033328240

Entity TypeOrganization

Primary Taxonomy246XC2903X

Legal Business NameMICHAEL P. MACRIS, M.D. P.A.

Location Address1631 NORTH LOOP W STE 240Houston, TX 77008-1548

Mailing Address1631 North Loop W Ste 240Houston, TX 77008-1548

Phone(713) 465-7979

Organization SubpartNo

Authorized OfficialMichael Peter MacrisDoctor · (713) 465-7979

Enumeration DateMay 22, 2007

Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration

✔ NPI 1033328240 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialist/Technologist Cardiovascular · Vascular SpecialistTechnologists, Technicians & Other Technical Service Providers

Taxonomy Code246XC2903X

License✔ Licensed in TX · SA0045

Definition

A vascular technologist, also known as a vascular sonographer, creates images of blood vessels and collects data that help physicians diagnose disorders affecting blood flow. Vascular technologists often evaluate blood flow and identify blocked arteries or blood clots.

Also ListedThoracic Surgery (Cardiothoracic Vascular Surgery)Taxonomy 208G00000X · License G9685 (TX)

1631 NORTH LOOP W STE 240, Houston, TX 77008

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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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael P. Macris, M.d. P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Michael P. Macris, M.D. P.A., which bills Medicare for the services this clinician delivers.

Clinician (1)

Michael Macris, M.D.

Thoracic Surgery

NPI 1780753905

1631 NORTH LOOP W STE 240
Houston, TX 77008

(713) 465-7979

✔ PECOS✔ Accepts MedicareSame address

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

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 Michael P. Macris, M.D. P.A.'s NPI number?

The NPI number for Michael P. Macris, M.D. P.A. is 1033328240. It was assigned to this organization in the NPPES registry on May 22, 2007.

Where is Michael P. Macris, M.D. P.A. located?

Michael P. Macris, M.D. P.A. is located at 1631 North Loop W Ste 240, Houston, TX 77008. The listed phone number is (713) 465-7979.

What is Michael P. Macris, M.D. P.A.'s specialty?

The primary specialty registered for this NPI is Specialist/Technologist Cardiovascular, specializing in Vascular Specialist, with taxonomy code 246XC2903X.

Is Michael P. Macris, M.D. P.A. enrolled in Medicare?

Yes. Michael P. Macris, M.D. P.A. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Michael P. Macris, M.D. P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Thoracic Surgery) reassigns their Medicare billing to Michael P. Macris, M.D. P.A.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Michael P. Macris, M.D. P.A. was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.