Matthew J. Fisher, M.D.
Internal Medicine Physician · Stony Brook, NY
Matthew J. Fisher, M.D. is an internal medicine physician with a practice address in Stony Brook, New York, and NPI 1891038964, issued on Mar 27, 2013. Check the license (New York 295801, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Matthew J. Fisher
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 295801 NY
Self-reported in NPPES; status is on the state search - Practice location
- Stony Brook University Hospital, Stony Brook, NY 11794
- Phone
- (631) 444-2020
- Enumerated
- Mar 27, 2013
- Record last updated
- Jan 13, 2024
- Fax
- (631) 444-2894
- Medicare enrollment
- Enrolled (PECOS I20220223002014); 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 Stony Brook University Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew J. Fisher 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 295801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.5 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).
Bills Medicare through 2 group practices
- North Shore-Lij Medical PCMount Kisco, NY
- Stony Brook Internists University Faculty Practice CorporationStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew J. Fisher among 12,067 internal medicine physician records in New York
Matthew J. Fisher, M.D. 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2013 · median 2002 among the 7,221 with a school on file
- Record last updated2024 · 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).
121 internal medicine physician records list a practice address in Stony Brook
They are 121 of the 3,053 NPPES records with a practice address in Stony Brook, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Stony Brook → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Abdullah, M.D.Stony Brook, NY 117941700079100
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- Lynn Hallarman, M.D.Stony Brook, NY 117941689778078
- Jennifer Hensley, M.D.Stony Brook, NY 117941881702124
- Kyung Ho Kim, MDStony Brook, NY 117941063687929
- Olena Ksovreli, M.D.Stony Brook, NY 117941821063041
- Patrick Lynch, MDStony Brook, NY 117941841495256
Common questions
What is Matthew J. Fisher, M.D.'s NPI number?
Matthew J. Fisher, M.D.'s National Provider Identifier (NPI) is 1891038964, issued on Mar 27, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Matthew J. Fisher, M.D. located?
The NPPES record lists a practice address at Stony Brook University Hospital, Stony Brook, NY, 11794. Phone: (631) 444-2020. Providers update this record themselves, so call before visiting.
How can I verify Matthew J. Fisher, M.D.'s license?
NPPES lists New York license number 295801, 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.
What is Matthew J. Fisher, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.5 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.