Quick answers
- Does Irene M. Madriz accept Medicare assignment?
- Yes. Medicare's clinician data says Irene M. Madriz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Irene M. Madriz see?
- In 2024, CMS data shows 77 Original Medicare patients and 80 services for Irene M. Madriz. This counts Original Medicare only and measures volume, not quality.
- What is Irene M. Madriz's NPI number?
- 1821083825. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Irene M. Madriz, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 77 |
|---|---|
| Services billed to Medicare | 80 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Anesthesia for procedure on anus and rectum (00902)26 services
- Anesthesia for other procedure on urinary system through urethra (00910)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease52%
- Diabetes40%
- Chronic kidney disease40%
- Arthritis36%
Hospitals where Irene M. Madriz works
Medicare's Facility Affiliation Data lists Irene M. Madriz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Texas Orthopedic HospitalHouston, TX · Acute Care Hospital · CCN 450804
Practice locations
Addresses where Irene M. Madriz is enrolled with Medicare (CMS data updated October 2, 2026).
- 15300 Southwest Fwy, Suite 100Sugar Land, TX 77478 (281) 274‑6670
- 9525 Katy Fwy, Suite 206Houston, TX 77024 (713) 400‑2990
Group practices
Medicare enrollment lists Irene M. Madriz as a member of these groups (CMS data updated October 2, 2026).
- Texans Anesthesia Associates PLLC200 clinicians in the group
- Phoenix Anesthesia Associates, PLLC19 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Texas →
Other nurse anesthetists in Sugar Land
Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.
Other clinicians in Texans Anesthesia Associates PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821083825 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians