Matthew Fisher M.D.
About this NPIWhat this record shows.
NPI 1891038964 is registered to Matthew Fisher M.D., a Internal Medicine practising at Stony Brook University Hospital, Department Of Pediatrics Hsc T-11/040 in Stony Brook, New York. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Matthew Fisher M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2013.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20220223002014HospitalistNY
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Matthew Fisher M.D. accepts. To confirm in-network status with your specific health plan, contact Matthew Fisher M.D. directly at (631) 444-2020.
Frequently asked
Yes. NPI 1891038964 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (631) 444-2020.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Matthew Fisher M.D. is a Type-1 individual NPI.