At a glance
- 75 N Country Rd, Port Jefferson, NY 11777
About John T Mather Memorial Hospital
John T Mather Memorial Hospital is an organization based in Port Jefferson, NY and listed in the NPI registry under general acute care hospital. NPI 1750740437 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Practice Size
Counted from individual NPI records registered at the same street address; a shared building can inflate this.
Providers in This Building & Nearby
From registry street addresses: providers filed at this building, which can include unrelated practices sharing it.
- Justina C. Mellone, DO Student in an Organized Health Care Education Program
- Aakaash Varma, MD Dermatology
- Krisela Vojniku, MD Student in an Organized Health Care Education Program
- Loretta Didwell Physician Assistant
- Raymond Wong Hospitalist
- Katlyn ANN CONVILLE Anthony, NP Nurse Practitioner
- Shehnaz Wasim, MD Internal Medicine
- Julia Korobenko, DO Student in an Organized Health Care Education Program
- Kathleen Fanelli Nurse Practitioner
- Benjamin O'Brien Student in an Organized Health Care Education Program
- Julia E. Fitzpatrick, PA-C Physician Assistant
- Thomas Overholt, M.D.
Showing 12 of 315. The full list is in the Related Providers tab.
Specialty
Credentials & Licensing
About this hospital
Source: CMS Care Compare, Hospital General Information, checked 2026-09-12.
Most common inpatient stays (Medicare)
3,485 Medicare discharges across 97 diagnosis groups (2024). Groups with fewer than 11 discharges are not published by CMS.
| Diagnosis group | DRG | Discharges | Avg. Medicare payment |
|---|---|---|---|
| Septicemia Or Severe Sepsis Without Mv >96 Hours With Mcc | 871 | 472 | $17,087 |
| Heart Failure and Shock With Mcc | 291 | 193 | $11,553 |
| Respiratory Infections and Inflammations With Mcc | 177 | 163 | $13,351 |
| Septicemia Or Severe Sepsis Without Mv >96 Hours Without Mcc | 872 | 124 | $7,954 |
| Kidney and Urinary Tract Infections Without Mcc | 690 | 93 | $6,114 |
| Kidney and Urinary Tract Infections With Mcc | 689 | 91 | $9,856 |
| Simple Pneumonia and Pleurisy With Mcc | 193 | 88 | $10,075 |
| Gastrointestinal Hemorrhage With Cc | 378 | 87 | $7,021 |
| Cellulitis Without Mcc | 603 | 80 | $6,708 |
| Other Kidney and Urinary Tract Diagnoses With Mcc | 698 | 72 | $13,879 |
Source: CMS Medicare Inpatient Hospitals by Provider and Service. Shows what the hospital admits Medicare patients for and what Medicare paid on average — not quality of care.
Contact Information
- (631) 473-1320
- Email not available
Practice Locations
75 N COUNTRY RD
Port Jefferson, NY 11777
CMS Quality Rating
Sources
This rating is published by the Centers for Medicare & Medicaid Services (CMS) and is reproduced here unmodified.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at John T Mather Memorial Hospital 8
Providers listing the same practice in the NPI registry.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of practice is John T Mather Memorial Hospital?
John T Mather Memorial Hospital is a hospital in Port Jefferson, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Acute Care Hospital”.
NPI registry
What is John T Mather Memorial Hospital's address?
John T Mather Memorial Hospital is listed at 75 N Country Rd, Port Jefferson, NY 11777. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John T Mather Memorial Hospital?
The number on file is (631) 473-1320. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John T Mather Memorial Hospital?
John T Mather Memorial Hospital's National Provider Identifier is 1750740437. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Is John T Mather Memorial Hospital's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John T Mather Memorial Hospital. If this is you, claiming it is free.
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