Map showing the location of JOHN T MATHER MEMORIAL HOSP T C U in PORT JEFFERSON, New York
75 NORTH COUNTRY ROAD, PORT JEFFERSON, NY, 11777

Overall Score

CMS Five-Star Quality Rating
5/5Much above averageCMS Five-Star overall rating
  1. Much below average
  2. Below average
  3. Average
  4. Above average
  5. Much above average

Where it ranks

  • New YorkAbove 77% of peers593 rated homes · average 3.0★
  • Suffolk CountyAbove 63% of peers41 rated homes · average 3.7★
  • United StatesAbove 80% of peers14,574 rated homes · average 3.0★

How the rating is built

  • Health inspectionsStarting point3★+0.2 vs NY avg
  • StaffingCan add or remove a star5★+2.3 vs NY avg
  • Quality measuresCan add or remove a star5★+1.1 vs NY avg

CMS starts from the health inspection stars, then adds or subtracts a star for staffing and for quality measures. Stars are assigned relative to other facilities in the same state.

Ratings & measures

Tap a row to see what it means
Health inspection ratingCMS stars from the last three on-site inspection cycles3★Above only 46% of peersNY avg2.8★U.S. avg2.8★
What is health inspection rating?

Stars assigned from the last three standard surveys and every complaint investigation in that window, weighted toward the most recent and the most serious findings. CMS assigns these stars relative to other facilities in the same state.

Why it matters

It carries the most weight in the overall rating and is the only domain based on what trained inspectors saw on site rather than what the facility reported.

Staffing ratingCMS stars from payroll-reported hours and turnover5★Top 7%NY avg2.7★U.S. avg2.9★
What is staffing rating?

Nurse and aide hours per resident day from payroll records CMS collects every quarter, adjusted for how much care residents need, plus staff turnover and weekend coverage.

Why it matters

More hours and lower turnover are the strongest predictors of fewer falls, pressure sores, and avoidable hospital stays.

Quality measures ratingCMS stars from clinical outcomes and resident assessments5★Above 61% of peersNY avg3.9★U.S. avg3.6★
What is quality measures rating?

Clinical outcomes from resident assessments and Medicare claims: falls with injury, pressure ulcers, hospitalizations, antipsychotic use, and more, for both short-stay and long-stay residents.

Why it matters

It shows whether care is working, but part of it comes from the facility’s own assessments, so read it alongside the inspection results.

Total nurse hoursPer resident per day, all nursing staff8.75hrsTop 1%NY avg3.65Benchmark4.10
What is total nurse hours?

All licensed nurse and aide hours worked, divided by the number of residents, on an average day. Reported from payroll, not self-reported.

Why it matters

Federal research links 4.1 hours a day to fewer avoidable harms. Below about 3 hours, residents wait longer for help with basics like toileting and repositioning.

RN hoursPer resident per day, registered nurses only5.33hrsTop 1%NY avg0.70Benchmark0.75
What is rn hours?

Registered nurse hours only. RNs assess residents, manage medications, and catch changes in condition; LPNs and aides deliver most hands-on care.

Why it matters

RN coverage is the staffing measure most tied to fewer hospital transfers and infections, and it is where thinly staffed facilities cut first.

Nursing staff turnoverShare of nursing staff who left within a year · lower is better19%Top 4%NY avg41%RN turnover16%
What is nursing staff turnover?

The share of nursing staff who left within the past year, from the same payroll data.

Why it matters

High turnover means residents are cared for by people who do not know them, and it is one of the strongest predictors of inspection problems.

Fines in the last three yearsCivil money penalties imposed by CMS · lower is better$0Above only 30% of peersNY avg$22,640Fines · denials0 · 0
What is fines in the last three years?

Civil money penalties CMS imposed after serious or uncorrected deficiencies, and denials of Medicare payment for new admissions.

Why it matters

Penalties follow the worst inspection findings. A recent fine is the clearest sign that inspectors found real harm.

Inspection history

Last three inspection cycles
12citations
3inspection dates
0actual harm (G–I)
0immediate jeopardy (J–L)
May 23, 2025most recent

Citations by monthOct 2022 – May 2025

  • No actual harm (D–F)
  • Actual harm (G–I)
  • Immediate jeopardy (J–L)
  • $Fine or payment denial

Click a month or a year to filter the findings below. Arrow keys move between months; Esc clears.

May 23, 20257 citationsCycle 1worst F · no actual harm
  1. F635Provide doctor's orders for the resident's immediate care at the time the resident was admitted.Resident Assessment and Care PlanningD · isolatedCorrected Jul 18, 2025
  2. F655Create and put into place a plan for meeting the resident's most immediate needs within 48 hours of being admittedResident Assessment and Care PlanningD · isolatedCorrected Jul 18, 2025
  3. F695Provide safe and appropriate respiratory care for a resident when needed.Quality of Life and CareD · isolatedCorrected Jul 18, 2025
  4. F812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.Nutrition and DietaryF · widespreadCorrected Jul 21, 2025
  5. F868Have the Quality Assessment and Assurance group have the required members and meet at least quarterlyAdministrationC · widespreadCorrected Jul 18, 2025
  6. F880Provide and implement an infection prevention and control program.Infection ControlD · isolatedCorrected Jul 18, 2025
  7. F882Designate a qualified infection preventionist to be responsible for the infection prevent and control program in the nursing home.Infection ControlD · isolatedCorrected Jul 18, 2025
Jun 20, 20243 citationsCycle 2worst D · no actual harm
  1. F812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.Nutrition and DietaryD · isolatedCorrected Aug 15, 2024
  2. F813Have a policy regarding use and storage of foods brought to residents by family and other visitors.Nutrition and DietaryD · isolatedCorrected Aug 15, 2024
  3. F880Provide and implement an infection prevention and control program.Infection ControlD · isolatedCorrected Aug 15, 2024
Oct 5, 20222 citationsCycle 3worst E · no actual harm
  1. F623Provide timely notification to the resident, and if applicable to the resident representative and ombudsman, before transfer or discharge, including appeal rights.Resident RightsC · widespreadCorrected Nov 21, 2022
  2. F812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.Nutrition and DietaryE · patternCorrected Nov 21, 2022

Staffing

From quarterly payroll reports

Hours per resident per day

  • All nursing staffRNs, LPNs and aides combined8.75hrsTop 1%+5.10 vs NY avg
  • Registered nursesRN hours only5.33hrsTop 1%+4.63 vs NY avg
  • Licensed practical nursesLPN hours0.00hrs
  • Nurse aidesCNA hours3.42hrs
  • Weekend nursingAll staff on Saturdays and Sundays7.37hrs
  • New York average
  • Research benchmark (4.10 total, 0.75 RN)

Turnover & capacity

  • Nursing staff turnoverShare who left within a year · lower is better19%Top 4%NY avg 41%
  • RN turnoverRegistered nurses only16%Not ranked by CMS
  • Administrators who leftIn the past year1Leadership changed
  • Occupancy16 certified beds · ~13 residents a day83%Above only 15% of peersNY avg 90%

Fines & penalties

Roughly the past three years

Enforcement summary

  • $0In fines
  • 0Fines
  • 0Payment denials
  • $22,640NY avg in fines
Above only 30% of peersFewer fines than 30% of rated homes in New York

Actions on record

No fines or payment denialsNothing on record in the current reporting window. New York facilities average 0.6 penalties.

Ownership

As filed with CMS

Structure

Ownership type
For profit - Individual
Chain
Independent
Certification
Medicare and Medicaid
Location type
Urban
Ownership change
None in the last 12 months

People and entities on file

Direct owners (5%+)
  • Northwell Healthcare INC
Operational or managerial control
  • Roger Blumencranz
  • Betsy Britton
  • Nicholas Craig
  • James Danowski
  • John Diviney
  • Sharon Donnelly
  • Kathryn Frey
  • Timothy Glynn
  • +10 more
Corporate directors
  • Stephen Bello
  • Roger Blumencranz
  • Betsy Britton
  • Marvin Colson
  • Nicholas Craig
  • James Danowski
  • Sylvia Diaz
  • John Diviney
  • +17 more
Corporate officers
  • Roger Blumencranz
  • Betsy Britton
  • Nicholas Craig
  • Michele Cusack
  • James Danowski
  • John Diviney
  • Debra Engelhardt
  • Kathryn Frey
  • +7 more
Managing employees
  • Sharon Donnelly
  • Christina Iadanza
  • Christine Livreri
  • William Mader
  • Joseph Ng
  • Kenneth Roberts
  • Joseph Wisnoski

Person Organization

Sources & notes

Public data, updated quarterly

Data sources

  • CMS Care Compare · Provider InformationStar ratings, staffing hours, turnover, penalties and flags · processed February 2026.
  • CMS Health CitationsEvery deficiency from the last three inspection cycles, with scope, severity and inspection cycle.
  • CMS Penalties and Ownership filesCivil money penalties, payment denials, and the owners and managers on file.

Notes

  • CMS Certification Number 335853 · 75 NORTH COUNTRY ROAD, PORT JEFFERSON, NY, 11777.
  • Percentiles compare this facility with every rated nursing home in New York and Suffolk County. Turnover and fines are inverted so a high percentile is always good.
  • This is an informational summary of public data, not medical, legal, or placement advice. Facilities cannot pay to change it; a facility that believes a record is wrong can dispute it with CMS.

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