John T. Mather Memorial Hospital
NPI 1639585706 · Undersea and Hyperbaric Medicine (Preventive Medicine) Physician · Port Jefferson, NY
John T. Mather Memorial Hospital is a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician organization in Port Jefferson, NY (NPI 1639585706).
Provider details
- NPI number
- 1639585706
- Entity type
- Organization
- Primary specialty
- Undersea and Hyperbaric Medicine (Preventive Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Joseph Wisnoski, Sr. Vp & Cmo(631) 473-1320
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Health Service Clinic/Center261QH0100X
Ambulatory Health Care Facilities
- Recovery Care Clinic/Center261QR0800X
Ambulatory Health Care Facilities
- Rehabilitation Hospital283X00000X
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
Mailing address
Registry dates
- Enumerated
- 2014-07-09
- Last updated
- 2014-07-11
Frequently asked questions
- What is John T. Mather Memorial Hospital's NPI number?
- John T. Mather Memorial Hospital's National Provider Identifier (NPI) is 1639585706, 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 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician (Allopathic & Osteopathic Physicians).
- 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) 476-2768.
- 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, Sr. Vp & Cmo. 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 (1639585706) is active in the NPPES registry as of the last update on 2014-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.