JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON
PORT JEFFERSON, NY 11777 · Acute Care Hospitals
94 procedures with CMS pricing data · Source: CMS IPPS Provider Summary, FY2024
By BillRazor Research · Last updated March 27, 2026 · Methodology
Procedures Analyzed
94
With CMS pricing data
Avg Charge-to-Medicare Ratio
7.2x
Chargemaster ÷ Medicare
CMS Quality Rating
Patient experience & outcomes
Hospital Type
Acute Care Hospitals
Voluntary non-profit - Private
Above 90th Percentile
4%
Compared to NY hospitals
Understanding Your Costs
When you receive a bill from JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON, you are typically seeing the hospital's “chargemaster” rate — its published list price for each service. According to CMS data, JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON lists chargemaster rates that average 7.2x the corresponding Medicare reimbursement amount across 94 procedures with publicly available pricing data (Source: CMS IPPS Provider Summary, FY2024).
The median hospital in NY has a chargemaster-to-Medicare ratio of 3.8x, with ratios across the state ranging from 1.1x to 12.4x. At 7.2x, this facility’s average ratio is above the state median. 124 hospitals in NY report pricing data to CMS (Source: CMS IPPS Provider Summary).
The procedure with the largest gap between the listed price and Medicare reimbursement at JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON is Intracranial Hemorrhage or Cerebral Infarction with Complications or Tpa in 24 Hours (DRG 065). The listed chargemaster rate is $93,425, while Medicare reimburses $7,216 for the same procedure — a ratio of 12.9x (Source: CMS IPPS Provider Summary, FY2024).
What does this actually mean for your bill? Chargemaster rates are rarely what patients pay. If you have insurance, your insurer has negotiated a separate rate — often 40–60% less than the listed price. If you are uninsured, you may be able to negotiate directly with the hospital or request financial assistance. The chargemaster-to-Medicare ratio is a useful reference point for understanding listed pricing, but it does not represent what most patients will owe out of pocket.
4 of 94 procedures (4%) at this facility have listed rates above the 90th percentile compared to other NY hospitals reporting the same procedure data to CMS (Source: CMS IPPS Provider Summary).
JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON is a voluntary non-profit - private acute care hospitals facility with a CMS quality rating of 5/5 stars. Note: CMS quality ratings measure patient outcomes and experience, not pricing. A hospital with high listed prices may provide excellent care, and pricing data alone should not be used to evaluate the quality of a healthcare provider.
Listed Chargemaster Rates vs Medicare Reimbursement — Top Procedures by Ratio
Source: CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.
Procedure Pricing Lookup
Search for a specific procedure or DRG code to see listed chargemaster rates and Medicare reimbursement amounts.
| Procedure | DRG | Listed Charge | Medicare Reimb. | Ratio | State Position | |
|---|---|---|---|---|---|---|
| Intracranial Hemorrhage or Cerebral Infarction with Complications or Tpa in 24 Hours | 065 | $93,425 | $7,216 | 12.9x | 1th | Compare your bill |
| Gastrointestinal Obstruction without Complications | 390 | $46,134 | $3,623 | 12.7x | 1th | Compare your bill |
| Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulatio | 809 | $68,081 | $5,640 | 12.1x | 1th | Compare your bill |
| Laparoscopic Cholecystectomy without C.D.E. without Complications | 419 | $93,407 | $8,078 | 11.6x | 1th | Compare your bill |
| Intracranial Hemorrhage or Cerebral Infarction without Complications | 066 | $56,697 | $5,232 | 10.8x | 1th | Compare your bill |
| Cardiac Arrhythmia and Conduction Disorders without Complications | 310 | $44,080 | $4,281 | 10.3x | 1th | Compare your bill |
| Simple Pneumonia and Pleurisy with Complications | 194 | $53,676 | $5,305 | 10.1x | 1th | Compare your bill |
| Gastrointestinal Hemorrhage with Complications | 378 | $73,346 | $7,439 | 9.9x | 1th | Compare your bill |
| Hypertension without Major Complications | 305 | $51,948 | $5,332 | 9.7x | 1th | Compare your bill |
| Cellulitis without Major Complications | 603 | $61,939 | $6,465 | 9.6x | 1th | Compare your bill |
| Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without Major Complications | 563 | $47,844 | $4,999 | 9.6x | 1th | Compare your bill |
| Signs and Symptoms without Major Complications | 948 | $49,974 | $5,233 | 9.6x | 1th | Compare your bill |
| Other Kidney and Urinary Tract Diagnoses with Complications | 699 | $90,190 | $9,546 | 9.4x | 1th | Compare your bill |
| Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without Major Complications | 392 | $56,890 | $6,072 | 9.4x | 1th | Compare your bill |
| Kidney and Urinary Tract Infections without Major Complications | 690 | $54,616 | $5,978 | 9.1x | 1th | Compare your bill |
| Other Digestive System Diagnoses with Complications | 394 | $61,724 | $6,801 | 9.1x | 1th | Compare your bill |
| Red Blood Cell Disorders without Major Complications | 812 | $63,789 | $7,143 | 8.9x | 1th | Compare your bill |
| Disorders of Pancreas Except Malignancy with Complications | 439 | $55,672 | $6,294 | 8.8x | 1th | Compare your bill |
| Septicemia or Severe Sepsis without Mechanical Ventilation over 96 Hours without Major Complications | 872 | $67,654 | $7,647 | 8.8x | 1th | Compare your bill |
| Gastrointestinal Obstruction with Complications | 389 | $50,791 | $5,777 | 8.8x | 1th | Compare your bill |
| Transient Ischemia without Thrombolytic | 069 | $56,855 | $6,661 | 8.5x | 1th | Compare your bill |
| Acute Myocardial Infarction, Discharged Alive with Complications | 281 | $54,821 | $6,514 | 8.4x | 1th | Compare your bill |
| Endocrine Disorders with Major Complications or Comorbidities | 643 | $101,886 | $12,371 | 8.2x | 1th | Compare your bill |
| Cardiac Arrhythmia and Conduction Disorders with Complications | 309 | $43,662 | $5,359 | 8.2x | 1th | Compare your bill |
| Disorders of the Biliary Tract with Complications | 445 | $77,962 | $9,572 | 8.1x | 1th | Compare your bill |
| Chronic Obstructive Pulmonary Disease with Major Complications or Comorbidities | 190 | $76,509 | $9,398 | 8.1x | 1th | Compare your bill |
| Peripheral Vascular Disorders with Complications | 300 | $62,573 | $7,850 | 8.0x | 1th | Compare your bill |
| Medical Back Problems without Major Complications | 552 | $63,345 | $8,025 | 7.9x | 1th | Compare your bill |
| Acute Myocardial Infarction, Discharged Alive with Major Complications or Comorbidities | 280 | $100,381 | $12,863 | 7.8x | 1th | Compare your bill |
| Major Gastrointestinal Disorders and Peritoneal Infections with Complications | 372 | $68,213 | $9,013 | 7.6x | 1th | Compare your bill |
| Organic Disturbances and Intellectual Disability | 884 | $94,175 | $12,630 | 7.5x | 1th | Compare your bill |
| Other Musculoskeletal System and Connective Tissue Operating Room Procedures with Complications | 516 | $138,427 | $18,731 | 7.4x | 1th | Compare your bill |
| Infectious and Parasitic Diseases with Operating Room Procedures with Complications | 854 | $160,460 | $21,775 | 7.4x | 1th | Compare your bill |
| Renal Failure with Complications | 683 | $52,589 | $7,170 | 7.3x | 1th | Compare your bill |
| Cardiac Arrhythmia and Conduction Disorders with Major Complications or Comorbidities | 308 | $79,868 | $10,912 | 7.3x | 1th | Compare your bill |
| Pulmonary Embolism with Major Complications or Comorbidities or Acute Cor Pulmonale | 175 | $66,966 | $9,228 | 7.3x | 1th | Compare your bill |
| Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without Major Complications | 641 | $41,689 | $5,746 | 7.3x | 1th | Compare your bill |
| Other Kidney and Urinary Tract Diagnoses with Major Complications or Comorbidities | 698 | $107,942 | $15,052 | 7.2x | 1th | Compare your bill |
| Pulmonary Edema and Respiratory Failure | 189 | $69,479 | $9,800 | 7.1x | 1th | Compare your bill |
| Diabetes with Complications | 638 | $47,534 | $6,735 | 7.1x | 1th | Compare your bill |
| Endocrine Disorders with Complications | 644 | $62,415 | $8,955 | 7.0x | 1th | Compare your bill |
| Circulatory Disorders Except Ami, with Cardiac Catheterization with Major Complications or Comorbidities | 286 | $131,610 | $18,897 | 7.0x | 1th | Compare your bill |
| Renal Failure with Major Complications or Comorbidities | 682 | $99,374 | $14,410 | 6.9x | 1th | Compare your bill |
| Respiratory Infections and Inflammations with Complications | 178 | $60,964 | $8,869 | 6.9x | 1th | Compare your bill |
| Major Small and Large Bowel Procedures with Complications | 330 | $158,627 | $23,235 | 6.8x | 1th | Compare your bill |
| Permanent Cardiac Pacemaker Implant with Major Complications or Comorbidities | 242 | $153,800 | $22,578 | 6.8x | 1th | Compare your bill |
| Kidney and Urinary Tract Infections with Major Complications or Comorbidities | 689 | $65,388 | $9,622 | 6.8x | 1th | Compare your bill |
| Fractures of Hip and Pelvis without Major Complications | 536 | $40,089 | $5,996 | 6.7x | 1th | Compare your bill |
| Hip and Femur Procedures Except Major Joint with Complications | 481 | $114,027 | $17,065 | 6.7x | 1th | Compare your bill |
| Operating Room Procedures for Obesity without Complications | 621 | $70,595 | $10,569 | 6.7x | 1th | Compare your bill |
Showing 50 of 94 procedures
All data from CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.
Statewide Context
Charge-to-Medicare ratio range across NY hospitals
124 hospitals in NY report pricing data to CMS. This facility's average ratio of 7.2x places it at the upper-middle range of the state range (Source: CMS IPPS Provider Summary).
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How it worksData: CMS Inpatient Prospective Payment System (IPPS) Provider Summary, FY2024. All data is publicly available under federal law (45 CFR Part 180).
Important: Listed chargemaster rates are not what most insured patients pay. Actual costs depend on your insurance plan's negotiated rates, deductibles, and coverage terms. This information is for educational purposes only and does not constitute medical, legal, or financial advice.
Frequently Asked Questions About JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON
How much does JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON charge compared to Medicare?
According to CMS IPPS data, JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON's listed chargemaster rates average 7.2x the Medicare reimbursement amount across 94 procedures. Chargemaster rates are list prices and are not what most insured patients pay — actual costs depend on insurance negotiations and coverage terms.
What is the most expensive procedure at JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON?
The procedure with the highest chargemaster-to-Medicare ratio at JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON is Intracranial Hemorrhage or Cerebral Infarction with Complications or Tpa in 24 Hours (DRG 065), with a listed charge of $93,425 compared to Medicare reimbursement of $7,216 — a ratio of 12.9x. Source: CMS IPPS Provider Summary.
Is JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON expensive compared to other NY hospitals?
JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON's average chargemaster-to-Medicare ratio is 7.2x. Ratios vary significantly across NY hospitals. This ratio reflects listed chargemaster prices, not what patients actually pay. CMS quality ratings, which measure patient outcomes and experience, are separate from pricing data.
Where does the pricing data for JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON come from?
All pricing data comes from the Centers for Medicare & Medicaid Services (CMS) Inpatient Prospective Payment System (IPPS) Provider Summary, published under federal price transparency law (45 CFR Part 180). This data is publicly available and updated annually.
How can I check if my bill from JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON is correct?
You can upload your bill to BillRazor for a free comparison against publicly available Medicare reimbursement data. Our system analyzes every line item in 60 seconds. Research suggests 49-80% of hospital bills contain errors, including duplicate charges, incorrect procedure codes, and unbundling.
Does JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON in PORT JEFFERSON, NY accept Medicare?
JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON is included in the CMS IPPS Provider Summary, which covers Medicare-participating hospitals. For specific coverage questions, contact JOHN T MATHER MEMORIAL HOSPITAL OF PORT JEFFERSON directly or check with your insurance provider.
Data sourced from CMS IPPS Provider Summary, FY2024. All information is for educational purposes only.