Jennifer Mattar, DO
Internal Medicine Physician · Syracuse, NY
Jennifer Mattar, DO is an internal medicine physician with a practice address in Syracuse, New York, and NPI 1942942834, issued on Apr 11, 2022. Check the license (New York 334962, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jennifer Mattar
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 334962 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4488 Onondaga Blvd, Syracuse, NY 13219
- Phone
- (315) 492-5784
- Enumerated
- Apr 11, 2022
- Record last updated
- Jul 21, 2025
- Fax
- (315) 492-5782
- Medicare enrollment
- Enrolled (PECOS I20250530000238); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 4488 Onondaga Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jennifer Mattar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 334962Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
146 Medicare Part D claims for 37 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium12 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.
Bills Medicare through 2 group practices
- Crouse Health Hospital IncSyracuse, NY
- Familycare Medical Group PCSyracuse, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Mattar among 12,067 internal medicine physician records in New York
Jennifer Mattar, DO is one of 12,067 internal medicine physician records with a practice address in New York. 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2022 · median 2002 among the 7,221 with a school on file
- Record last updated2025 · 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
165 internal medicine physician records list a practice address in Syracuse
They are 165 of the 9,922 NPPES records with a practice address in Syracuse, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Syracuse → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joshua BecklerSyracuse, NY 132151467985333
- Mitchell Brodey, MDSyracuse, NY 132151174501498
- Michael Conroy, MDSyracuse, NY 132151255016093
- David Simon, MDSyracuse, NY 132151083692271
- Anna Stockhausen, MDSyracuse, NY 132151457679748
- Joshua Sweet, MDSyracuse, NY 132151760944771
- David Urciuoli, MDSyracuse, NY 132151073193744
- John Pipas, MDSyracuse, NY 132241477540912
Common questions
What is Jennifer Mattar, DO's NPI number?
Jennifer Mattar, DO's National Provider Identifier (NPI) is 1942942834, issued on Apr 11, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Mattar, DO located?
The NPPES record lists a practice address at 4488 Onondaga Blvd, Syracuse, NY, 13219. Phone: (315) 492-5784. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Mattar, DO's license?
NPPES lists New York license number 334962, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer Mattar, DO prescribe under Medicare Part D?
In 2024, Jennifer Mattar, DO had 146 Medicare Part D claims for 37 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.