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Internal Medicine

Mousa Matar, MD

Works at hospitals in Riverside, CA · California

Summary

Mousa Matar, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Riverside, CA. NPI 1992116982. 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 Mousa Matar, 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
14Years since medical school (graduated 2012)
MaleGender (as listed)

Quick answers

Which hospitals does Mousa Matar work at?
Medicare's official clinician data lists Mousa Matar at 2 hospitals: Parkview Community Hospital Medical Center and Riverside Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mousa Matar see patients?
Medicare's clinician data lists 1 practice location in Riverside, CA. Call before your visit to confirm the address.
What is Mousa Matar's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Mousa Matar accept Medicare assignment?
Yes. Medicare's clinician data says Mousa Matar 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 Mousa Matar?
(951) 788-8332, as listed in official Medicare / NPI Registry data.
What is Mousa Matar's NPI number?
1992116982. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mousa Matar works

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

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Riverside

Clinicians with the same Medicare primary specialty in Riverside, CA — not a recommendation.

All internal medicine doctors in Riverside →

Clinician information

CredentialMD
Graduation year2012
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1992116982
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