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

Physician Assistant

Madelyn R. Chamis

Sees patients in Boston, MA · Massachusetts

Summary

Madelyn R. Chamis (Physician Assistant) is enrolled with Medicare at 1 practice location in Boston, MA. NPI 1003500059. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Madelyn R. Chamis, 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

Physician AssistantPrimary specialty
YesAccepts Medicare assignment
3Years since medical school (graduated 2023)
FemaleGender (as listed)
Massachusetts General Physicians Organization IncGroup practice

Quick answers

Where does Madelyn R. Chamis see patients?
Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
What is Madelyn R. Chamis's specialty?
Medicare lists Physician Assistant as the primary specialty.
Does Madelyn R. Chamis accept Medicare assignment?
Yes. Medicare's clinician data says Madelyn R. Chamis 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 Madelyn R. Chamis?
(617) 724-0287, as listed in official Medicare / NPI Registry data.
What is Madelyn R. Chamis's NPI number?
1003500059. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Madelyn R. Chamis is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Massachusetts General Physicians Organization Inc3,558 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, Massachusetts →

Other physician assistants in Boston

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

All physician assistants in Boston →

Clinician information

Graduation year2023
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003500059
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians