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Emergency Medicine

Hillary R. Irons, MD

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

Summary

Hillary R. Irons, MD (Emergency Medicine) is listed by Medicare at 3 hospitals in Marlborough, MA, Leominster, MA and Worcester, MA. NPI 1003041971. 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 Hillary R. Irons, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
17Years since medical school (graduated 2009)
Medical College Of Georgia School Of MedicineMedical school
FemaleGender (as listed)
UMass Memorial Medical Group IncGroup practice

Quick answers

Which hospitals does Hillary R. Irons work at?
Medicare's official clinician data lists Hillary R. Irons at 3 hospitals: Marlborough Hospital, UMass Memorial Healthalliance Hospitals and UMass Memorial Medical Center/University Campus. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Hillary R. Irons see patients?
Medicare's clinician data lists 1 practice location in Worcester, MA. Call before your visit to confirm the address.
What is Hillary R. Irons's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Hillary R. Irons accept Medicare assignment?
Yes. Medicare's clinician data says Hillary R. Irons 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 Hillary R. Irons?
(508) 334-1000, as listed in official Medicare / NPI Registry data.
What is Hillary R. Irons's NPI number?
1003041971. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Hillary R. Irons works

Medicare's Facility Affiliation Data lists Hillary R. Irons 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 Hillary R. Irons is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Hillary R. Irons as a member of this group (CMS data updated 2026-10-02).

  • 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 →

Clinician information

CredentialMD
Medical schoolMedical College Of Georgia School Of Medicine
Graduation year2009
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003041971
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