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Emergency Medicine

Alma A. Reyes Estrada, MD

Works at hospitals in San Juan, PR · Puerto Rico

Summary

Dr. Alma A. Reyes Estrada, MD is an emergency medicine doctor at Avenida Juan Ponce De Leon Parada, 37 Hospital Auxilio Mutuo, Hato Rey, PR 00919. Phone: (787) 758-2000. Accepts Medicare assignment. In 2024, Alma A. Reyes Estrada had 72 Original Medicare patients and 113 services. NPI 1134667256. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: Avenida Juan Ponce De Leon Parada, 37 Hospital Auxilio Mutuo, Hato Rey, PR 00919 · Directions
  • Phone: (787) 758‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Auxilio Mutuo Hospital
  • Group practice: ER Specialized Care LLC
  • Medical school: graduated 2007 (19 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Alma A. Reyes Estrada, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Alma A. Reyes Estrada accept Medicare assignment?
Yes. Medicare's clinician data says Alma A. Reyes Estrada 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 Alma A. Reyes Estrada see?
In 2024, CMS data shows 72 Original Medicare patients and 113 services for Alma A. Reyes Estrada. This counts Original Medicare only and measures volume, not quality.
What is Alma A. Reyes Estrada's NPI number?
1134667256. 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 Alma A. Reyes Estrada, 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 patients72
Services billed to Medicare113
Different services or procedures10
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Emergency department visit with low level of medical decision making (99283)55 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)24 services
  3. Emergency department visit with moderate level of medical decision making (99284)22 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%
  • Diabetes69%
  • Chronic kidney disease58%
  • Arthritis47%
  • Heart failure40%

Hospitals where Alma A. Reyes Estrada works

Medicare's Facility Affiliation Data lists Alma A. Reyes Estrada 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.

Practice locations

Addresses where Alma A. Reyes Estrada is enrolled with Medicare (CMS data updated October 2, 2026).

  • Avenida Juan Ponce De Leon Parada, 37 Hospital Auxilio MutuoHato Rey, PR 00919 (787) 758‑2000

Group practices

Medicare enrollment lists Alma A. Reyes Estrada as a member of this group (CMS data updated October 2, 2026).

  • ER Specialized Care LLC19 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Puerto Rico →

Other emergency medicine doctors in Hato Rey

Clinicians with the same Medicare primary specialty in Hato Rey, PR — not a recommendation.

All emergency medicine doctors in Hato Rey →

Other clinicians in ER Specialized Care LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2007 (19 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134667256
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians