Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Colorectal Surgery (Proctology)

Omar I. Madriz, MD

Works at hospitals in Katy, TX · Houston, TX · Texas

Summary

Omar I. Madriz, MD (Colorectal Surgery (Proctology)) is listed by Medicare at 2 hospitals in Katy, TX and Houston, TX. NPI 1598871204. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Omar I. Madriz, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Colorectal Surgery (Proctology)Primary specialty
YesAccepts Medicare assignment
31Years since medical school (graduated 1995)
Baylor College Of MedicineMedical school
MaleGender (as listed)
UT PhysiciansGroup practice

Quick answers

Which hospitals does Omar I. Madriz work at?
Medicare's official clinician data lists Omar I. Madriz at 2 hospitals: Memorial Hermann Katy Hospital and Memorial Hermann Memorial City Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Omar I. Madriz see patients?
Medicare's clinician data lists 2 practice locations, including Pearland, TX and Shenandoah, TX. Call before your visit to confirm the address.
What is Omar I. Madriz's specialty?
Medicare lists Colorectal Surgery (Proctology) as the primary specialty.
Does Omar I. Madriz accept Medicare assignment?
Yes. Medicare's clinician data says Omar I. Madriz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Omar I. Madriz?
(713) 486-6000, as listed in official Medicare / NPI Registry data.
What is Omar I. Madriz's NPI number?
1598871204. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Omar I. Madriz works

Medicare's Facility Affiliation Data lists Omar I. Madriz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Omar I. Madriz is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Omar I. Madriz as a member of this group (CMS data updated 2026-10-02).

  • UT Physicians1,765 clinicians in the group

Specialties

Find other Colorectal Surgery (Proctology) doctors in Texas →

Other colorectal surgeons in Pearland

Clinicians with the same Medicare primary specialty in Pearland, TX — not a recommendation.

All colorectal surgeons in Pearland →

Clinician information

CredentialMD
Medical schoolBaylor College Of Medicine
Graduation year1995
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598871204
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians