JOHN T. MATHER MEMORIAL HOSPITAL
NPI 1093718728
General Acute Care Hospital in Port Jefferson, NY

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

The NPI number for John T. Mather Memorial Hospital is 1093718728. It was assigned to this organization in the NPPES registry on May 27, 2005.

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

The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.

Active since May 27, 2005

5/5

Hospital Overall Rating

75 N COUNTRY RD, PORT JEFFERSON, NY 11777(631) 473-1320(631) 686-1459 Get Directions Write a Review

NPPES record last updated: July 28, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 23, 2025, Oct 6, 2020 (2 updates tracked since 2020).

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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 1093718728) is a healthcare organization registered as a general acute care hospital in Port Jefferson, New York and active in the NPI registry since May 2005. The organization lists Michele L Cusack, Evp & Cfo, as its authorized official.

NPPES Registry Identity

NPI1093718728

Entity TypeOrganization

Primary Taxonomy282N00000X

Legal Business NameJOHN T. MATHER MEMORIAL HOSPITAL

Location Address75 N COUNTRY RDPort Jefferson, NY 11777-2119

Mailing Address75 N Country RdPort Jefferson, NY 11777-2190 · (631) 473-1320 · Fax (631) 473-5254

Phone(631) 473-1320

Fax(631) 686-1459

Organization SubpartNo

Authorized OfficialMichele L CusackEvp & Cfo · (516) 321-6058

Enumeration DateMay 27, 2005

Last NPPES UpdateJuly 28, 20252 updates tracked since enumeration

NPPES CertifiedJuly 28, 2025

✔ NPI 1093718728 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyGeneral Acute Care HospitalHospitals

Taxonomy Code282N00000X

License✔ Licensed in NY · 5149000

Definition

An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.

Also ListedPsychiatric UnitTaxonomy 273R00000X · License 5149000 (NY)

Also ListedSkilled Nursing FacilityTaxonomy 314000000X · License 5149000 (NY)

Also ListedPharmacyTaxonomy 333600000X

Also ListedPharmacy · Community/Retail PharmacyTaxonomy 3336C0003X

75 N COUNTRY RD, Port Jefferson, NY 11777

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Other Identifiers 10

Medicaid1206575MA

Medicaid21920MD

Medicaid100822WA

Medicaid3300185NC

MedicaidHSP42196CA

Medicaid110851658PA

MedicaidHSP32196CA

Medicaid00274364NY

Medicaid3044310CT

Medicaid6004504NJ

Hospital Quality Ratings CMS Care Compare

Quality and patient-experience ratings for John T Mather Memorial Hospital Of Port Jefferson (CMS certification number 330185), from CMS Care Compare.

John T Mather Memorial Hospital Of Port Jefferson

Acute Care Hospitals · Port Jefferson, NY

5/5 CMS Overall Rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330185

Location75 North Country RoadPort Jefferson, NY 11777 · Suffolk County · (631) 473-1320

Emergency services Meaningful use of EHRs

Patient Experience

HCAHPS patient survey · Jan 2023 – Dec 2023

4/5 summary rating

Nurse communication

4/5

Doctor communication

4/5

Staff responsiveness

4/5

Communication about medicines

4/5

Discharge information

4/5

Care transition

4/5

Cleanliness

5/5

Quietness

3/5

Overall hospital rating

4/5

Recommend hospital

4/5

Star ratings summarize responses from patients surveyed after discharge, collected through the CMS HCAHPS program.

Complications & Deaths 18

Rate of complications for hip/knee replacement patients

3.3 No different than national

Death rate for heart attack patients

11.9% No different than national

Death rate for COPD patients

7.1% No different than national

Death rate for heart failure patients

8.7% Better than the national benchmark

Death rate for pneumonia patients

12.7% Better than the national benchmark

Death rate for stroke patients

11.5% No different than national

Infections 5

Central Line Associated Bloodstream Infection (ICU + select Wards)

1 observed case · 3.864 predicted · 3,722 patient days

0.259 No different than national

Catheter Associated Urinary Tract Infections (ICU + select Wards)

1 observed case · 6.646 predicted · 5,418 patient days

0.150 Better than the national benchmark

SSI - Colon Surgery

0 observed cases · 3.471 predicted · 134 patient days

0.000 Better than the national benchmark

MRSA Bacteremia

4 observed cases · 2.776 predicted · 43,314 patient days

1.441 No different than national

Clostridium Difficile (C.Diff)

4 observed cases · 19.314 predicted · 43,314 patient days

0.207 Better than the national benchmark

Unplanned Hospital Visits 13

Hospital return days for heart attack patients

113 days per 100 discharges

Hospital return days for heart failure patients

515 days per 100 discharges

Hospital return days for pneumonia patients

705 days per 100 discharges

Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)

700 No different than national

Rate of inpatient admissions for patients receiving outpatient chemotherapy

Cases too small to report

Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy

Cases too small to report

Timely & Effective Care 16

Emergency department volume

Medium

Percentage of healthcare personnel who are up to date with COVID-19 vaccinations

2.2%

Healthcare workers given influenza vaccination

72%

Average (median) time patients spent in the emergency department before leaving from the visit A lower number of minutes is better

274 minutes

Average (median) time patients spent in the emergency department before leaving from the visit- Psychiatric/Mental Health Patients. A lower number of minutes is better

469 minutes

Left before being seen

Leave this field empty

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JUSTINA CATHERINE MELLONE DO

Student in an Organized Health Care Education/Training Program