Organization
John T. Mather Memorial Hospital
Provider's NPPES record last updated: April 23, 2025
Overview
- Entity Type
- Organization
- NPI
- 1467249334
- Primary Specialty
- Internal Medicine — Critical Care Medicine
- Practice Location
- Port Jefferson, New York
- Organization Subpart
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 21, 2026, 1:21 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Critical Care Medicine
Allopathic & Osteopathic Physicians
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Taxonomy code 207RC0200X
Practice Locations
Practice Location
75 N Country Rd
Port Jefferson, New York 11777-2119
Phone: (631) 473-1320
Additional Practice Location
170 N Country Rd Ste 3
Port Jefferson, New York 11777-2606
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
70 N Country Rd Ste 302
Port Jefferson, New York 11777-2161
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
70 N Country Rd Ste 205
Port Jefferson, New York 11777-2161
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
625 Belle Terre Rd Ste 113
Port Jefferson, New York 11777-2316
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
100 Highlands Blvd Ste 303
Port Jefferson, New York 11777-2320
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
100 Highlands Blvd Ste 201
Port Jefferson, New York 11777-2320
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
100 Highlands Blvd Ste 101
Port Jefferson, New York 11777-2320
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
125 Oakland Ave Ste 303
Port Jefferson, New York 11777-2130
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
125 Oakland Ave Ste 301
Port Jefferson, New York 11777-2130
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
5225 Nesconset Hwy
Port Jefferson Station, New York 11776-2053
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
500 Commack Rd Bldg E
Suite 150d
Commack, New York 11725-5020
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
200 Belle Terre Rd
Port Jefferson, New York 11777-1928
Phone: (631) 473-1320
Fax: (631) 686-7972
Additional Practice Location
625 Belle Terre Rd Ste 204
Port Jefferson, New York 11777-2318
Phone: (631) 473-1320
Fax: (631) 686-7972
Record Information
- Enumeration Date
- April 23, 2025
- Provider's NPPES Record Last Updated
- April 23, 2025
- Certification Date
- April 23, 2025
- NPISignal NPPES Dataset
- August 2026
See Something Wrong?
Incorrect provider information
Everything on this page comes directly from the NPPES data CMS publishes. NPISignal cannot edit a provider's record — only the provider or organization can, directly through NPPES.
Update a record through NPPESSomething wrong with this page?
If NPISignal is displaying this data incorrectly — a formatting error, a broken link, a mismatch with the source file — let us know.
Report a display issue