John T. Mather Memorial Hospital
About this NPIWhat this record shows.
NPI 1467249334 is registered to John T. Mather Memorial Hospital, a healthcare organisation classified as "Critical Care Medicine (Internal Medicine) Physician" and located at 75 N Country Rd in Port Jefferson, New York. The organisation's authorised official is Christine Livreri. The organisation has been enumerated in the NPI registry since 2025.
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.
Part B Supplier
- O20250701003602Clinic/Group PracticeNY
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 John T. Mather Memorial Hospital accepts. To confirm in-network status with your specific health plan, contact John T. Mather Memorial Hospital directly at (631) 473-1320.
Frequently asked
Yes. NPI 1467249334 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Critical Care Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
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) 473-1320.
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. John T. Mather Memorial Hospital is a Type-2 organisational NPI.