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Medical Oncology

Margarite D. Matossian

Sees patients in Chicago, IL · Illinois

Summary

Margarite D. Matossian (Medical Oncology) is enrolled with Medicare at 1 practice location in Chicago, IL. NPI 1306427646. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(773) 702‑1000 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Margarite D. Matossian, 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

1Practice location
Medical OncologyPrimary specialty
YesAccepts Medicare assignment
5Years since medical school (graduated 2021)
Tulane University School Of MedicineMedical school
FemaleGender (as listed)
The University of Chicago Medical CenterGroup practice

Quick answers

Where does Margarite D. Matossian see patients?
Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
What is Margarite D. Matossian's specialty?
Medicare lists Medical Oncology as the primary specialty, and also Internal Medicine.
Does Margarite D. Matossian accept Medicare assignment?
Yes. Medicare's clinician data says Margarite D. Matossian 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 Margarite D. Matossian?
(773) 702-1000, as listed in official Medicare / NPI Registry data.
What is Margarite D. Matossian's NPI number?
1306427646. 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 Margarite D. Matossian is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Margarite D. Matossian as a member of this group (CMS data updated 2026-10-02).

  • The University of Chicago Medical Center915 clinicians in the group

Specialties

Find other Medical Oncology doctors in Illinois →

Other oncologists in Chicago

Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.

All oncologists in Chicago →

Clinician information

Medical schoolTulane University School Of Medicine
Graduation year2021
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1306427646
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