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JOHN T. MATHER MEMORIAL HOSPITAL
NPI 1932296316
Hospitalist in Port Jefferson, NY

Active since October 06, 2006
75 N COUNTRY RD, PORT JEFFERSON, NY 11777(631) 473-1320(631) 686-7972 Get Directions Write a Review

NPPES record last updated: April 29, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About John T. Mather Memorial Hospital NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN T. MATHER MEMORIAL HOSPITAL (NPI 1932296316) is a healthcare organization registered as a hospitalist in Port Jefferson, New York and active in the NPI registry since October 2006. The organization lists Joseph Wisnoski, Vice Presidnet Finance, as its authorized official.

NPPES Registry Identity

NPI1932296316
Entity TypeOrganization
Primary Taxonomy208M00000X
Legal Business NameJOHN T. MATHER MEMORIAL HOSPITAL
Location Address75 N COUNTRY RDPort Jefferson, NY 11777-2119
Mailing Address625 Belle Terre Rd, Suite 100Port Jefferson, NY 11777-2316 · (631) 473-1320 · Fax (631) 686-7972
Phone(631) 473-1320
Fax(631) 686-7972
Organization SubpartNo
Authorized OfficialJoseph WisnoskiVice Presidnet Finance · (631) 473-1320
Enumeration DateOctober 6, 2006
Last NPPES UpdateApril 29, 2015
✔ NPI 1932296316 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
75 N COUNTRY RD, Port Jefferson, NY 11777
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Other Identifiers 1

Medicare PINWCW301NY

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John T. Mather Memorial Hospital is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

232

Medicare enrollment records show 232 clinicians reassign Medicare billing to John T. Mather Memorial Hospital, which bills Medicare for the services they deliver. Of these, 61 practice at this address and 107 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 14

Nurse Practitioner70
Emergency Medicine62
Internal Medicine29
Psychiatry28
Critical Care (Intensivists)14
Hospitalist13
Diagnostic Radiology7
Pulmonary Disease3
6 other specialties6

Nearest to this location (20)

See all 232
Fareeha Ajmal, DO
Hospitalist
NPI 1285375675
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Shaheer Ali, M.D.
Internal Medicine
NPI 1427435312
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-7654
✔ PECOS✔ Accepts MedicareSame address
Joseph Carrucciu, MD
Diagnostic Radiology
NPI 1063424828
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOSSame address
Amna Ejaz, MD
Internal Medicine
NPI 1952862872
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-7654
✔ PECOS✔ Accepts MedicareSame address
Susan Emanuele, M.D.
Hematology/Oncology
NPI 1902965163
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-7654
✔ PECOS✔ Accepts MedicareSame address
Hilda Enriquez, D.O.
Internal Medicine
NPI 1861822520
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-7654
✔ PECOS✔ Accepts MedicareSame address
Joel Kleinberg, MD
Emergency Medicine
NPI 1710564406
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Richard Lewis, MD
Psychiatry
NPI 1558780189
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Javeria Nasim, MD
Hospitalist
NPI 1114189073
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Marie Obrien, ANP
Nurse Practitioner
NPI 1073860607
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Genine Schwinge
Nurse Practitioner
NPI 1053492017
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Andrew Weber, MD
Critical Care (Intensivists)
NPI 1922492305
75 N COUNTRY RD
Port Jefferson, NY 11777
(516) 698-9289
✔ PECOS✔ Accepts MedicareSame address
Raymond Wong
Hospitalist
NPI 1023462686
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-7654
✔ PECOS✔ Accepts MedicareSame address
Mohamed Ahmed
Psychiatry
NPI 1912534652
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Catherine Audus
Nurse Practitioner
NPI 1346790755
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOSSame address
Swagato Bhattacharyya, DO
Psychiatry
NPI 1720585458
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-2517
✔ PECOS✔ Accepts MedicareSame address
John Paul Blaber, M.D.
Emergency Medicine
NPI 1760625727
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Christopher Driscoll, DO
Emergency Medicine
NPI 1629697420
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Glen Granati, M.D.
Critical Care (Intensivists)
NPI 1467872739
MATHER HOSPITAL, 75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS✔ Accepts MedicareSame address
Kenny Lien, MD
Diagnostic Radiology
NPI 1780858860
75 N COUNTRY ROAD
Port Jefferson, NY 11777
(631) 476-2767
✔ PECOS✔ Accepts MedicareSame address
See all 232 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John T. Mather Memorial Hospital's NPI number?

The NPI number for John T. Mather Memorial Hospital is 1932296316. It was assigned to this organization in the NPPES registry on October 6, 2006.

Where is John T. Mather Memorial Hospital located?

John T. Mather Memorial Hospital is located at 75 N Country Rd, Port Jefferson, NY 11777. The listed phone number is (631) 473-1320.

What is John T. Mather Memorial Hospital's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is John T. Mather Memorial Hospital enrolled in Medicare?

Yes. John T. Mather Memorial Hospital is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through John T. Mather Memorial Hospital?

According to the CMS Revalidation Reassignment List (October 2026 release), 232 clinicians in 14 Medicare specialties reassign their Medicare billing to John T. Mather Memorial Hospital. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (70), Emergency Medicine (62) and Internal Medicine (29). Of these, 61 practice at this address and 107 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for John T. Mather Memorial Hospital was last updated on April 29, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.