OrganizationActive
John T Mather Memorial Hospital
NPI 1821244757 · General Acute Care Hospital · Port Jefferson, NY
John T Mather Memorial Hospital is a General Acute Care Hospital organization in Port Jefferson, NY (NPI 1821244757).
Provider details
- NPI number
- 1821244757
- Entity type
- Organization
- Primary specialty
- General Acute Care HospitalHospitals
- Parent organization
- John T Mather Memorial Hospital
- Organization subpart
- Yes
- Authorized official
- Joseph Wisnoski, Authorized Official(631) 473-1320
Specialties & taxonomies
Hospitals
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
75 N Country Rd
Port Jefferson, NY 11777-2119
Phone: (631) 473-1320
Approximate (ZIP-level) locationGet directions
Mailing address
75 N Country Road
Port Jefferson, NY 11777-2119
Other names (DBA / former)
- Other name
- Intensivists
Registry dates
- Enumerated
- 2008-08-12
- Last updated
- 2008-08-12
Frequently asked questions
- What is John T Mather Memorial Hospital's NPI number?
- John T Mather Memorial Hospital's National Provider Identifier (NPI) is 1821244757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John T Mather Memorial Hospital?
- John T Mather Memorial Hospital is classified in the NPPES registry as General Acute Care Hospital (Hospitals).
- Where is John T Mather Memorial Hospital located?
- John T Mather Memorial Hospital's practice location on file with NPPES is 75 N Country Rd, Port Jefferson, NY 11777-2119.
- What is John T Mather Memorial Hospital's phone number?
- The practice phone number listed in the NPPES registry for John T Mather Memorial Hospital is (631) 473-1320.
- Who is the authorized official for John T Mather Memorial Hospital?
- The authorized official listed on John T Mather Memorial Hospital's NPPES record is Joseph Wisnoski, Authorized Official. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John T Mather Memorial Hospital's NPI active?
- Yes — John T Mather Memorial Hospital's NPI (1821244757) is active in the NPPES registry as of the last update on 2008-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.