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

Emergency Medicine

Aaron J. Prugar, MD

Works at hospitals in Marlborough, MA · Worcester, MA · Massachusetts

Summary

Dr. Aaron J. Prugar, MD is an emergency medicine doctor at 55 Lake Ave N, Worcester, MA 01655. Phone: (508) 334-1000. Accepts Medicare assignment. NPI 1245970854. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about Aaron J. Prugar, 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 Aaron J. Prugar accept Medicare assignment?
Yes. Medicare's clinician data says Aaron J. Prugar 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.
What is Aaron J. Prugar's NPI number?
1245970854. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Aaron J. Prugar works

Medicare's Facility Affiliation Data lists Aaron J. Prugar 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 Aaron J. Prugar is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Aaron J. Prugar as a member of this group (CMS data updated October 2, 2026).

  • UMass Memorial Medical Group Inc2,516 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Massachusetts →

Other emergency medicine doctors in Worcester

Clinicians with the same Medicare primary specialty in Worcester, MA — not a recommendation.

All emergency medicine doctors in Worcester →

Other clinicians in UMass Memorial Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolTufts University School Of Medicine
Graduation year2022 (4 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1245970854
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians