Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John T Mather Memorial Hospital

Organization General Acute Care Hospital · NPI 1821244757

John T Mather Memorial Hospital is a General Acute Care Hospital in Port Jefferson, New York. Registered with an NPI since 2008.

In the registry since
2008

Practice location Address checks out

75 N Country Rd
Port Jefferson, NY 11777-2119
Phone: (631) 473-1320
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Acute Care Hospital (primary) Taxonomy 282N00000X

Record details

NPI number1821244757
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationJohn T Mather Memorial Hospital
Authorized official Joseph Wisnoski — Authorized Official · (631) 473-1320
Other names Intensivists
NPI enumeratedAugust 12, 2008
Last updated in NPPESAugust 12, 2008
Mailing address75 N Country Road, Port Jefferson, NY 11777-2119

Other providers in Port Jefferson