Skilled nursing facility · CMS certification number 335853

JOHN T MATHER MEMORIAL HOSP T C U

PORT JEFFERSON, New York · Medicare and Medicaid · 16 certified beds in Care Compare

Download JOHN T MATHER MEMORIAL HOSP T C U’s record (CSV, each figure with its worksheet, line and column)

JOHN T MATHER MEMORIAL HOSP T C U: its citable report, full history — $295 · an email when it changes — $99/month

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Who owns JOHN T MATHER MEMORIAL HOSP T C U, as filed with CMS

Care Compare

5% OR GREATER DIRECT OWNERSHIP INTEREST: NORTHWELL HEALTHCARE INC (organization), 100%%, since 01/01/2018
CORPORATE DIRECTOR: BELLO, STEPHEN (individual), NOT APPLICABLE, since 09/01/2019; BLUMENCRANZ, ROGER (individual), NOT APPLICABLE, since 02/01/2018; BRITTON, BETSY (individual), NOT APPLICABLE, since 05/01/1979; COLSON, MARVIN (individual), NOT APPLICABLE, since 07/01/2019; CRAIG, NICHOLAS (individual), NOT APPLICABLE, since 01/01/2017; DANOWSKI, JAMES (individual), NOT APPLICABLE, since 11/01/2004; DIAZ, SYLVIA (individual), NOT APPLICABLE, since 07/01/2019; DIVINEY, JOHN (individual), NOT APPLICABLE, since 04/01/2019; DONNELLY, SHARON (individual), NOT APPLICABLE, since 09/12/2016; ENGELHARDT, DEBRA (individual), NOT APPLICABLE, since 09/01/2015; FREY, KATHRYN (individual), NOT APPLICABLE, since 07/01/2005; GLYNN, TIMOTHY (individual), NOT APPLICABLE, since 12/01/2011; IADANZA, CHRISTINA (individual), NOT APPLICABLE, since 09/12/2016; KUHN, KONRAD (individual), NOT APPLICABLE, since 05/01/1978; LIPPENCOTT, DONALD (individual), NOT APPLICABLE, since 07/01/2019; LIVRERI, CHRISTINE (individual), NOT APPLICABLE, since 09/12/2016; NAPPI, RALPH (individual), NOT APPLICABLE, since 05/01/1978; ROBERTS, KENNETH (individual), NOT APPLICABLE, since 05/01/1986; RUGGIERO, CHRISTINE (individual), NOT APPLICABLE, since 04/01/2019; SINI, JOHN (individual), NOT APPLICABLE, since 11/01/1982; STERNLICHT, LEO (individual), NOT APPLICABLE, since 11/01/2004; TRANCHON, HAROLD (individual), NOT APPLICABLE, since 05/01/1979; WEISS, EDWARD (individual), NOT APPLICABLE, since 02/01/1988; WISNOSKI, JOSEPH (individual), NOT APPLICABLE, since 06/01/2009; YU, JOHN (individual), NOT APPLICABLE, since 04/01/2019
CORPORATE OFFICER: BLUMENCRANZ, ROGER (individual), NOT APPLICABLE, since 02/01/2018; BRITTON, BETSY (individual), NOT APPLICABLE, since 05/01/1979; CRAIG, NICHOLAS (individual), NOT APPLICABLE, since 01/01/2017; CUSACK, MICHELE (individual), NOT APPLICABLE, since 01/01/2018; DANOWSKI, JAMES (individual), NOT APPLICABLE, since 11/01/2004; DIVINEY, JOHN (individual), NOT APPLICABLE, since 05/01/2014; ENGELHARDT, DEBRA (individual), NOT APPLICABLE, since 09/01/2015; FREY, KATHRYN (individual), NOT APPLICABLE, since 10/01/2005; KUHN, KONRAD (individual), NOT APPLICABLE, since 05/01/1978; NAPPI, RALPH (individual), NOT APPLICABLE, since 01/01/2018; ROBERTS, KENNETH (individual), NOT APPLICABLE, since 05/01/1986; SINI, JOHN (individual), NOT APPLICABLE, since 11/01/1982; STERNLICHT, LEO (individual), NOT APPLICABLE, since 11/01/2004; TRANCHON, HAROLD (individual), NOT APPLICABLE, since 05/01/1979; WEISS, EDWARD (individual), NOT APPLICABLE, since 02/01/1988
OPERATIONAL/MANAGERIAL CONTROL: BLUMENCRANZ, ROGER (individual), NOT APPLICABLE, since 02/01/2018; BRITTON, BETSY (individual), NOT APPLICABLE, since 05/01/1979; CRAIG, NICHOLAS (individual), NOT APPLICABLE, since 01/01/2017; DANOWSKI, JAMES (individual), NOT APPLICABLE, since 11/01/2004; DIVINEY, JOHN (individual), NOT APPLICABLE, since 05/01/2014; DONNELLY, SHARON (individual), NOT APPLICABLE, since 09/12/2016; FREY, KATHRYN (individual), NOT APPLICABLE, since 10/01/2005; GLYNN, TIMOTHY (individual), NOT APPLICABLE, since 12/01/2011; IADANZA, CHRISTINA (individual), NOT APPLICABLE, since 09/12/2016; KUHN, KONRAD (individual), NOT APPLICABLE, since 05/01/1978; LIVRERI, CHRISTINE (individual), NOT APPLICABLE, since 09/12/2016; NAPPI, RALPH (individual), NOT APPLICABLE, since 01/01/2018; ROBERTS, KENNETH (individual), NOT APPLICABLE, since 05/01/1986; SINI, JOHN (individual), NOT APPLICABLE, since 11/01/1982; STERNLICHT, LEO (individual), NOT APPLICABLE, since 11/01/2004; TRANCHON, HAROLD (individual), NOT APPLICABLE, since 05/01/1979; WEISS, EDWARD (individual), NOT APPLICABLE, since 02/01/1988; WISNOSKI, JOSEPH (individual), NOT APPLICABLE, since 07/16/2013
W-2 MANAGING EMPLOYEE: DONNELLY, SHARON (individual), NOT APPLICABLE, since 09/12/2016; IADANZA, CHRISTINA (individual), NOT APPLICABLE, since 09/12/2016; LIVRERI, CHRISTINE (individual), NOT APPLICABLE, since 09/12/2016; MADER, WILLIAM (individual), NOT APPLICABLE, since 08/01/2023; NG, JOSEPH (individual), NOT APPLICABLE, since 08/01/2023; ROBERTS, KENNETH (individual), NOT APPLICABLE, since 05/01/1986; WISNOSKI, JOSEPH (individual), NOT APPLICABLE, since 07/12/2016

Medicare enrollment

As filed in the CMS file dated October 1, 2026 (Medicare enrollment ownership), under the enrollment of JOHN T MATHER MEMORIAL HOSPITAL (enrollment ID O20210622000309).

5% OR GREATER DIRECT OWNERSHIP INTEREST: NORTHWELL HEALTHCARE INC (organization), 100.00%, since 01/01/2018
CORPORATE DIRECTOR: BETSY N BRITTON (individual), since 05/01/1979; CHRISTINA M IADANZA (individual), since 09/12/2016; CHRISTINE LIVRERI (individual), since 09/12/2016; CHRISTINE MARIE RUGGIERO (individual), since 04/01/2019; DEBRA LOIS ENGELHARDT (individual), since 09/01/2015; DONALD E LIPPENCOTT (individual), since 07/01/2019; EDWARD J WEISS (individual), since 02/01/1988; HAROLD F TRANCHON (individual), since 05/01/1979; JAMES DANOWSKI (individual), since 11/01/2004; JOHN DIVINEY (individual), since 04/01/2019; JOHN J YU (individual), since 04/01/2019; JOHN R SINI (individual), since 11/01/1982; JOSEPH WISNOSKI (individual), since 06/01/2009; KATHRYN B FREY (individual), since 07/01/2005; KENNETH DOUGLAS ROBERTS (individual), since 05/01/1986; KONRAD J KUHN (individual), since 05/01/1978; LEO STERNLICHT (individual), since 11/01/2004; MARVIN COLSON (individual), since 07/01/2019; NICHOLAS CRAIG (individual), since 01/01/2017; RALPH A NAPPI (individual), since 05/01/1978; ROGER A BLUMENCRANZ (individual), since 02/01/2018; SHARON E DONNELLY (individual), since 09/12/2016; STEPHEN J BELLO (individual), since 09/01/2019; SYLVIA DIAZ (individual), since 07/01/2019; TIMOTHY GLYNN (individual), since 12/01/2011
CORPORATE OFFICER: BETSY N BRITTON (individual), since 05/01/1979; DEBRA LOIS ENGELHARDT (individual), since 09/01/2015; EDWARD J WEISS (individual), since 02/01/1988; HAROLD F TRANCHON (individual), since 05/01/1979; JAMES DANOWSKI (individual), since 11/01/2004; JOHN DIVINEY (individual), since 05/01/2014; JOHN R SINI (individual), since 11/01/1982; KATHRYN B FREY (individual), since 10/01/2005; KENNETH DOUGLAS ROBERTS (individual), since 05/01/1986; KONRAD J KUHN (individual), since 05/01/1978; LEO STERNLICHT (individual), since 11/01/2004; MICHELE L CUSACK (individual), since 01/01/2018; NICHOLAS CRAIG (individual), since 01/01/2017; RALPH A NAPPI (individual), since 01/01/2018; ROGER A BLUMENCRANZ (individual), since 02/01/2018
OPERATIONAL/MANAGERIAL CONTROL: BETSY N BRITTON (individual), since 05/01/1979; CHRISTINA M IADANZA (individual), since 09/12/2016; CHRISTINE LIVRERI (individual), since 09/12/2016; EDWARD J WEISS (individual), since 02/01/1988; HAROLD F TRANCHON (individual), since 05/01/1979; JAMES DANOWSKI (individual), since 11/01/2004; JOHN DIVINEY (individual), since 05/01/2014; JOHN R SINI (individual), since 11/01/1982; JOSEPH WISNOSKI (individual), since 07/16/2013; KATHRYN B FREY (individual), since 10/01/2005; KENNETH DOUGLAS ROBERTS (individual), since 05/01/1986; KONRAD J KUHN (individual), since 05/01/1978; LEO STERNLICHT (individual), since 11/01/2004; NICHOLAS CRAIG (individual), since 01/01/2017; RALPH A NAPPI (individual), since 01/01/2018; ROGER A BLUMENCRANZ (individual), since 02/01/2018; SHARON E DONNELLY (individual), since 09/12/2016; TIMOTHY GLYNN (individual), since 12/01/2011
W-2 MANAGING EMPLOYEE: CHRISTINA M IADANZA (individual), since 09/12/2016; CHRISTINE LIVRERI (individual), since 09/12/2016; JOSEPH NG (individual), 0.00%, since 08/01/2023; JOSEPH WISNOSKI (individual), since 07/12/2016; KENNETH DOUGLAS ROBERTS (individual), since 05/01/1986; SHARON E DONNELLY (individual), since 09/12/2016; WILLIAM MADER (individual), 0.00%, since 08/01/2023

Paused by CMS: Form CMS-855A, December 11, 2025.

Private equity company, real estate investment trust and holding company: No: NORTHWELL HEALTHCARE INC.

Private equity company, real estate investment trust and holding company: Paused by CMS: BETSY N BRITTON; CHRISTINA M IADANZA; CHRISTINE LIVRERI; CHRISTINE MARIE RUGGIERO; DEBRA LOIS ENGELHARDT; DONALD E LIPPENCOTT; EDWARD J WEISS; HAROLD F TRANCHON; JAMES DANOWSKI; JOHN DIVINEY; JOHN J YU; JOHN R SINI; JOSEPH WISNOSKI; KATHRYN B FREY; KENNETH DOUGLAS ROBERTS; KONRAD J KUHN; LEO STERNLICHT; MARVIN COLSON; NICHOLAS CRAIG; RALPH A NAPPI; ROGER A BLUMENCRANZ; SHARON E DONNELLY; STEPHEN J BELLO; SYLVIA DIAZ; TIMOTHY GLYNN; BETSY N BRITTON; DEBRA LOIS ENGELHARDT; EDWARD J WEISS; HAROLD F TRANCHON; JAMES DANOWSKI; JOHN DIVINEY; JOHN R SINI; KATHRYN B FREY; KENNETH DOUGLAS ROBERTS; KONRAD J KUHN; LEO STERNLICHT; MICHELE L CUSACK; NICHOLAS CRAIG; RALPH A NAPPI; ROGER A BLUMENCRANZ; BETSY N BRITTON; CHRISTINA M IADANZA; CHRISTINE LIVRERI; EDWARD J WEISS; HAROLD F TRANCHON; JAMES DANOWSKI; JOHN DIVINEY; JOHN R SINI; JOSEPH WISNOSKI; KATHRYN B FREY; KENNETH DOUGLAS ROBERTS; KONRAD J KUHN; LEO STERNLICHT; NICHOLAS CRAIG; RALPH A NAPPI; ROGER A BLUMENCRANZ; SHARON E DONNELLY; TIMOTHY GLYNN; CHRISTINA M IADANZA; CHRISTINE LIVRERI; JOSEPH NG; JOSEPH WISNOSKI; KENNETH DOUGLAS ROBERTS; SHARON E DONNELLY; WILLIAM MADER.

Changes in ownership

September 1, 2024, enrollment ownership file; no longer listed: RICHARD LUSAK (OPERATIONAL/MANAGERIAL CONTROL); RICHARD LUSAK (DIRECTOR); RICHARD LUSAK (OFFICER). Skilled_Nursing_Facility_All_Owners_:_2024-09-01.csv
April 1, 2024, enrollment ownership file; first listed: JOSEPH NG (W-2 MANAGING EMPLOYEE), associated since August 1, 2023. Skilled_Nursing_Facility_All_Owners_:_2024-04-01.csv
December 1, 2023, enrollment ownership file; no longer listed: GERALD M MILLER (OPERATIONAL/MANAGERIAL CONTROL); GERALD M MILLER (W-2 MANAGING EMPLOYEE); GERALD M MILLER (DIRECTOR); first listed: WILLIAM MADER (W-2 MANAGING EMPLOYEE), associated since August 1, 2023. Skilled_Nursing_Facility_All_Owners_:_2023-12-01.csv

Recent changes on this record

September 1, 2026: provider_name: John T Mather Memorial Hosp T C U (capital letters changed). NH_ProviderInfo_Sep2026_3.csv

Inspections of JOHN T MATHER MEMORIAL HOSP T C U

Cycle 1: health May 23, 2025 (7 deficiencies), fire safety May 23, 2025 (0)
Cycle 2: health June 20, 2024 (3 deficiencies), fire safety June 20, 2024 (1)
Cycle 3: health October 5, 2022 (2 deficiencies), fire safety October 5, 2022 (2)

Deficiencies cited at JOHN T MATHER MEMORIAL HOSP T C U

12 deficiencies on file, by tag, newest citation first

every one from a health inspection; every one marked “Deficient, Provider has date of correction”; none cited from a complaint. Letter after a date: scope and severity grade.

F 0635, resident assessment and care planning: May 23, 2025 (D, corrected July 18, 2025).
F 0655, resident assessment and care planning: May 23, 2025 (D, corrected July 18, 2025).
F 0695, quality of life and care: May 23, 2025 (D, corrected July 18, 2025).
F 0812, nutrition and dietary: May 23, 2025 (F, corrected July 21, 2025); June 20, 2024 (D, corrected August 15, 2024); October 5, 2022 (E, corrected November 21, 2022).
F 0868, administration: May 23, 2025 (C, corrected July 18, 2025).
F 0880, infection control: May 23, 2025 (D, corrected July 18, 2025); June 20, 2024 (D, corrected August 15, 2024).
F 0882, infection control: May 23, 2025 (D, corrected July 18, 2025).
F 0813, nutrition and dietary: June 20, 2024 (D, corrected August 15, 2024).
F 0623, resident rights: October 5, 2022 (C, corrected November 21, 2022).

JOHN T MATHER MEMORIAL HOSP T C U in Care Compare

Ownership Type: For profit - Individual
Legal Business Name: JOHN T MATHER MEMORIAL HOSPITAL
Date First Approved to Provide Medicare and Medicaid Services: 2007-04-04
Provider Resides in Hospital: Y
Continuing Care Retirement Community: N
Urban: Y
County/Parish: Suffolk
Telephone Number: 6314731320
Provider Changed Ownership in Last 12 Months: N
With a Resident and Family Council: Both
Automatic Sprinkler Systems in All Required Areas: Yes
Average Number of Residents per Day: 12.6
Overall Rating: 5
Health Inspection Rating: 3
QM Rating: 5
Short-Stay QM Rating: 5

Care Compare, October 1, 2026: provider information NH_ProviderInfo_Oct2026.csv · inspections NH_SurveySummary_Oct2026.csv · citations NH_HealthCitations_Oct2026.csv · ownership NH_Ownership_Oct2026.csv.

Nothing on file for JOHN T MATHER MEMORIAL HOSP T C U: no Medicare cost report; no penalty in Care Compare.

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