Quick answers
- Does Maria I. Villarreal accept Medicare assignment?
- Yes. Medicare's clinician data says Maria I. Villarreal 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 Maria I. Villarreal see?
- In 2024, CMS data shows 232 Original Medicare patients and 2,371 services for Maria I. Villarreal. This counts Original Medicare only and measures volume, not quality.
- What is Maria I. Villarreal's NPI number?
- 1376516526. 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 Maria I. Villarreal, 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 | 232 |
|---|---|
| Services billed to Medicare | 2,371 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)515 services
- Blood test, comprehensive group of blood chemicals (80053)366 services
- Blood test, lipids (cholesterol and triglycerides) (80061)320 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)283 services
- Hemoglobin a1c level (83036)273 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%
- Arthritis50%
- Diabetes44%
- Chronic kidney disease37%
- Ischemic heart disease26%
Hospitals where Maria I. Villarreal works
Medicare's Facility Affiliation Data lists Maria I. Villarreal at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- D W McMillan Memorial HospitalBrewton, AL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 010099
- Sacred Heart HospitalPensacola, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100025
Practice locations
Addresses where Maria I. Villarreal is enrolled with Medicare (CMS data updated October 2, 2026).
- 1121 Belleview AveBrewton, AL 36426 (251) 867‑6071
Group practices
Medicare enrollment lists Maria I. Villarreal as a member of this group (CMS data updated October 2, 2026).
- D.W. McMillan Memorial Hospital18 clinicians in the group
Specialties
- Emergency Medicineprimary
- Family Practicealso
Other emergency medicine doctors in Alabama
Clinicians with the same Medicare primary specialty in Alabama — not a recommendation.
Other clinicians in D.W. McMillan Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376516526 |
| 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
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 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