Mousa Matar, M.D.
Internal Medicine Physician · Riverside, CA
Mousa Matar, M.D. is an internal medicine physician with a practice address in Riverside, California, and NPI 1992116982, issued on May 13, 2014. Check the license (California A167764, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mousa Matar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A167764 CA
67430 WI
Self-reported in NPPES; status is on the state search - Practice location
- 4100 Central Ave, Riverside, CA 92506
- Phone
- (951) 750-1090
- Enumerated
- May 13, 2014
- Record last updated
- Feb 20, 2023
- Fax
- (951) 750-1091
- Medicare enrollment
- Enrolled (PECOS I20210907001912); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4100 Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Allison, M.D.Internal Medicine Physician1164471223
- Aimee French, M.D.Critical Care Medicine (Internal Medicine) Physician1730376179
- Kaneal McShane, PA-CPhysician Assistant1619307659
- Mina Mikhail, MDInternal Medicine Physician1336226786
- Adam Payne, NURSE PRACTITIONERFamily Nurse Practitioner1154847986
Verify Mousa Matar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A167764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,030 Medicare Part D claims for 771 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 114 claims were for opioids.
Most prescribed
- Atorvastatin Calcium652 claims
- Amlodipine Besylate336 claims
- Levothyroxine Sodium332 claims
- Eliquis313 claims
- Losartan Potassium266 claims
- Furosemide251 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 40.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $278.71
12 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mousa Matar among 17,696 internal medicine physician records in California
Mousa Matar, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Riverside
They are 187 of the 13,893 NPPES records with a practice address in Riverside, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Riverside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Allison, M.D.Riverside, CA 925061164471223
- Sarah Chae, MDRiverside, CA 925061003872169
- Stephen Colucci, MDRiverside, CA 925061245211614
- Andrew Corr, MDRiverside, CA 925061619958089
- Melanie Crane, MDRiverside, CA 925061083695456
- Leah Hopkins, MDRiverside, CA 925061548239932
- Tony Kwon, MDRiverside, CA 925061164404729
- Catherine Larson, MDRiverside, CA 925061255313060
Common questions
What is Mousa Matar, M.D.'s NPI number?
Mousa Matar, M.D.'s National Provider Identifier (NPI) is 1992116982, issued on May 13, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Mousa Matar, M.D. located?
The NPPES record lists a practice address at 4100 Central Ave, Riverside, CA, 92506. Phone: (951) 750-1090. Providers update this record themselves, so call before visiting.
How can I verify Mousa Matar, M.D.'s license?
NPPES lists California license number A167764, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mousa Matar, M.D. prescribe under Medicare Part D?
In 2024, Mousa Matar, M.D. had 10,030 Medicare Part D claims for 771 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mousa Matar, M.D.'s MIPS final score?
The 2023 MIPS final score is 40.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.