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

Internal Medicine

Haley Ellis, MD

Works at hospitals in Boston, MA · Newton, MA · Salem, MA … · Massachusetts, New Hampshire

Summary

Haley Ellis, MD (Internal Medicine) is listed by Medicare at 5 hospitals in Boston, MA, Newton, MA and Salem, MA and other places. NPI 1972098820. 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 Haley Ellis, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
8Years since medical school (graduated 2018)
FemaleGender (as listed)
Massachusetts General Physicians Organization IncGroup practice (+2 more)

Quick answers

Which hospitals does Haley Ellis work at?
Medicare's official clinician data lists Haley Ellis at 5 hospitals: Brigham and Women's Hospital, Massachusetts General Hospital, Newton-Wellesley Hospital, North Shore Medical Center - and Wentworth-Douglass Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Haley Ellis see patients?
Medicare's clinician data lists 3 practice locations, including Medford, MA and Boston, MA. Call before your visit to confirm the address.
What is Haley Ellis's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Haley Ellis accept Medicare assignment?
Yes. Medicare's clinician data says Haley Ellis 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.
Does Haley Ellis offer telehealth?
Medicare's clinician data says Haley Ellis offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Haley Ellis?
(781) 391-7518, as listed in official Medicare / NPI Registry data.
What is Haley Ellis's NPI number?
1972098820. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Haley Ellis works

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

Group practices

Medicare enrollment lists Haley Ellis as a member of these groups (CMS data updated 2026-10-02).

  • Massachusetts General Physicians Organization Inc3,558 clinicians in the group
  • Brigham and Womens Physicians Organization Inc2,994 clinicians in the group
  • The General Hospital Corporation1,267 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Medford

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

All internal medicine doctors in Medford →

Clinician information

CredentialMD
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1972098820
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