CMS certification 070006
Stamford Hospital
One Hospital Plaza, Stamford, CT 06904
Stamford Hospital has a CMS overall rating of 5 out of 5 stars. 76% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. Of the 27 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 5 and worse on none. Emergency patients spend a median of 3 h 20 min in its emergency department before leaving (US median 2 h 42 min).
Every figure on this page is published by CMS; we arrange and explain it, and score nothing ourselves.
What patients said
Answers from patients who stayed here, collected by CMS in the national HCAHPS survey: 1,039 completed surveys, 18% response rate, Oct 2024 – Sep 2025.
Emergency department
How long emergency patients spent here and how some time-critical care went, from CMS's timely and effective care measures, Oct 2024 – Sep 2025. CMS classes this emergency department's patient volume as very high; busier departments tend to have longer times, so the national median for departments of the same volume is shown too. These are medians over a year of visits, not a live wait time.
| Measure | This hospital | CT | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 416 visits sampled · US median for EDs of the same volume: 3 h 21 min | 3 h 20 min | 3 h 12 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 18 visits sampled | 5 h 14 min | 4 h 7 min | 4 h 17 min |
| Left before being seen Lower is better · 63,564 patients | 2% | 2% | 2% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 122 patients | 44% | 57% | 65% |
How Stamford Hospital compares with nearby hospitals
The closest hospitals of the same kind that CMS rates or surveys - the same city first, then the same county and ZIP area. Every figure is CMS's: the overall star rating, the share of patients who would definitely recommend the hospital, the median time emergency patients spent before leaving, and how many death, complication, infection and readmission measures CMS found better or worse than the national rate.
| Hospital | CMS stars | Would recommend | ER median time | Vs the nation |
|---|---|---|---|---|
| Stamford HospitalThis hospital | 5/5 | 76% | 3 h 20 min | 5 better |
| Norwalk HospitalSame county · Norwalk | 3/5 | 68% | 3 h 20 min | 2 better 1 worse |
| Greenwich Hospital AssociationSame county · Greenwich | 5/5 | 76% | 2 h 56 min | 5 better 3 worse |
| Danbury HospitalSame county · Danbury | 4/5 | 71% | 3 h 29 min | 5 better 3 worse |
| Bridgeport HospitalSame county · Bridgeport | 4/5 | 64% | 2 h 20 min | 6 better 1 worse |
| St Vincent's Medical CenterSame county · Bridgeport | 4/5 | 71% | 3 h 48 min | 2 better 1 worse |
Hospitals differ in size and in how sick their patients are. CMS adjusts its outcome measures for that, but a star or a percentage is a starting point for questions, not a verdict.
Deaths
How many patients died within 30 days of admission, adjusted by CMS for how sick they were. Lower is better. Data from Jul 2022 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| All patients, hospital-wide 2,780 cases | Too few cases | 3.1% | 3.9% |
| Heart attack 137 cases | Too few cases | 11.1% | 11.9% |
| Heart failure 499 cases | Too few cases | 11.6% | 11.1% |
| Pneumonia 636 cases | Too few cases | 12.4% | 15.2% |
| Stroke 260 cases | Too few cases | 10.4% | 11.9% |
| COPD 74 cases | Too few cases | 7.5% | 8.6% |
| Heart bypass surgery (CABG) 28 cases | Too few cases | 2.7% | 2.4% |
Complications
How often patients had serious complications, most of them after surgery, adjusted for how sick they were. Lower is better. Data from Jul 2022 – Jun 2024.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Serious complications, combined measure | No different | 0.96 likely 0.66 – 1.26 | 1 |
| After hip or knee replacement 205 cases | Too few cases | 2.6% | 4.1% |
| Deaths after a serious but treatable surgical complication 59 cases | No different | 200.68 per 1,000 likely 145.89 per 1,000 – 255.46 per 1,000 | 173.3 per 1,000 |
| Pressure ulcers (bed sores) 5,227 cases | No different | 0.88 per 1,000 likely 0.22 per 1,000 – 1.54 per 1,000 | 0.63 per 1,000 |
| Collapsed lung caused by a procedure 6,978 cases | No different | 0.15 per 1,000 likely 0 per 1,000 – 0.35 per 1,000 | 0.21 per 1,000 |
| Broken bones from falls in the hospital 6,959 cases | No different | 0.21 per 1,000 likely 0.02 per 1,000 – 0.4 per 1,000 | 0.27 per 1,000 |
| Bleeding or hematoma after surgery 1,563 cases | No different | 2.6 per 1,000 likely 1.14 per 1,000 – 4.07 per 1,000 | 2.34 per 1,000 |
| Kidney injury needing dialysis after surgery 762 cases | No different | 1.73 per 1,000 likely 0.17 per 1,000 – 3.28 per 1,000 | 1.67 per 1,000 |
| Breathing failure after surgery 778 cases | No different | 8.47 per 1,000 likely 2.53 per 1,000 – 14.4 per 1,000 | 9.42 per 1,000 |
| Blood clots in the lungs or legs after surgery 1,595 cases | No different | 3.51 per 1,000 likely 1.5 per 1,000 – 5.51 per 1,000 | 3.52 per 1,000 |
| Sepsis after surgery 760 cases | No different | 3.2 per 1,000 likely 0 per 1,000 – 6.59 per 1,000 | 5.27 per 1,000 |
| Surgical wound splitting open 251 cases | No different | 1.94 per 1,000 likely 0.47 per 1,000 – 3.41 per 1,000 | 1.77 per 1,000 |
| Accidental cut or tear during abdominal surgery 1,133 cases | No different | 1.04 per 1,000 likely 0.08 per 1,000 – 2.01 per 1,000 | 1.06 per 1,000 |
Infections caught in the hospital
Standardized infection ratio: 1.0 means as many infections as CMS predicted for a hospital like this one. Lower is better. Data from Oct 2024 – Sep 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Bloodstream infections from central lines (CLABSI) | No different | 1.1 likely 0.48 – 2.17 | 1 |
| Urinary tract infections from catheters (CAUTI) | No different | 0.37 likely 0.06 – 1.21 | 1 |
| Surgical site infections after colon surgery | No different | 1.03 likely 0.17 – 3.4 | 1 |
| MRSA bloodstream infections | No different | 0.55 likely 0.09 – 1.83 | 1 |
| C. diff intestinal infections | Better | 0.19 likely 0.08 – 0.4 | 1 |
1 more measure had too few cases here to report.
Readmissions and return visits
How often patients had to come back to a hospital after going home. Lower is better. Data from Jul 2023 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Readmitted after a heart attack 159 cases | Too few cases | 12.9% | 14.4% |
| Readmitted after heart failure 631 cases | Too few cases | 20.4% | 21.3% |
| Readmitted after pneumonia 712 cases | Too few cases | 17.7% | 17.3% |
| Readmitted after COPD 98 cases | Too few cases | 19.3% | 20% |
| Readmitted after heart bypass surgery 35 cases | Too few cases | 13.5% | 11% |
| Readmitted after hip or knee replacement 191 cases | Too few cases | 5.4% | 5.8% |
| Days back in hospital after a heart attack 141 cases | Too few cases | -7 days per 100 | — |
| Days back in hospital after heart failure 575 cases | Too few cases | -1.1 days per 100 | — |
| Days back in hospital after pneumonia 671 cases | Too few cases | 27.8 days per 100 | — |
| Unplanned visits after an outpatient colonoscopy 2,189 cases | No different | 12.2 per 1,000 likely 9.5 per 1,000 – 15.5 per 1,000 | 13 per 1,000 |
| Hospital admissions during outpatient chemotherapy 233 cases | No different | 10.1 per 100 likely 7.7 per 100 – 13.2 per 100 | 10.7 per 100 |
| ER visits during outpatient chemotherapy 233 cases | No different | 5.7 per 100 likely 4.1 per 100 – 7.9 per 100 | 5.4 per 100 |
| Unplanned visits after outpatient surgery 879 cases | No different | 0.9 likely 0.7 – 1.1 | — |
1 more measure had too few cases here to report.
Money from drug and device companies
Drug and device makers have to report what they pay teaching hospitals to CMS's Open Payments program. At many teaching hospitals most of it is research funding, or royalties for inventions the hospital licensed to a company. A payment on its own does not show a conflict of interest.
- 2019 $253,938
- 2020 $192,861
- 2021 $608,360
- 2022 $399,407
- 2023 $424,199
- 2024 $650,067
- 2025 $711,279
What the 2025 general payments were for
| Type of payment | Amount | Payments |
|---|---|---|
| Speaking, teaching and other services | $15,025 | 25 |
| Debt forgiveness | $9,756 | 8 |
| Space rental and facility fees | $3,000 | 1 |
Largest paying companies, 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer INC. | $240,733 | 15 |
| Merck Sharp & Dohme LLC | $238,674 | 2 |
| E.R. Squibb & Sons, L.L.C. | $135,294 | 3 |
| Sumitomo Pharma America, Inc. | $26,097 | 11 |
| Novartis Pharmaceuticals Corporation | $17,470 | 3 |
| Genentech, Inc. | $16,104 | 7 |
| Insulet Corporation | $13,625 | 21 |
| Incyte Corporation | $5,060 | 2 |
Largest research studies funded here, 2025
| Study | Amount |
|---|---|
| A PHASE 3 MULTICENTER PLACEBOCONTROLLED RANDOMIZED OBSERVERBLINDED TRIAL TO EVALUATE THE EFFICACY SAFETY TOLERABILITY IMMUNOGENICITY AND LOT CONSISTE… PFIZER INC. | $240,733 |
| An Open-label, Randomized Phase 3 Study of MK-2870 as a Single Agent and in Combination with Pembrolizumab Versus Treatment of Physician s Choice in … Merck Sharp & Dohme LLC | $135,469 |
| A Study to Evaluate the Efficacy, Safety, and Tolerability of BMS-986278 in Participants With Progressive Pulmonary Fibrosis E.R. Squibb & Sons, L.L.C. | $122,119 |
| A Phase 3 Randomized Open-Label Study of Adjuvant Pembrolizumab With or Without MK-2870 in Participants With Resectable Stage II to IIIB N2 NSCLC not… Merck Sharp & Dohme LLC | $103,205 |
| A MULTI-CENTER, PROSPECTIVE, OBSERVATIONAL STUDY OF PATIENTS BEING TREATED WITH ORGOVYX Sumitomo Pharma America, Inc. · NCT05467176 | $26,097 |
| Single agent GDC 9545 vs endocrine monotherapy adjuvant treatment in HR eBC Genentech, Inc. | $16,104 |
| A Randomized, Double-blind, Parallel Group, Placebo-controlled Multicenter Phase 3 Study to Evaluate Efficacy, Safety and Tolerability of Two Regimen… Novartis Pharmaceuticals Corporation | $9,420 |
| Connect MM: The Multiple Myeloma Disease Registry. The purpose of the Connect MM Registry is to explore the natural history and real world management… E.R. Squibb & Sons, L.L.C. · NCT01081028 | $8,250 |
Amounts are as the paying companies reported them to CMS; Open Payments data retrieved 13 Sep 2026. Full record on CMS Open Payments.
How to read this page
- Everything here is published by CMS on Care Compare. We arrange it and explain it; the star ratings and the better / worse verdicts are CMS's, not ours.
- “No different” is the most common result on most measures at most hospitals. CMS only calls a result better or worse when the difference from the national rate is statistically clear.
- Death, complication and readmission rates are adjusted by CMS for how sick patients were, so hospitals that treat sicker patients can be compared fairly.
- Infection results are ratios: 1.0 means as many infections as CMS predicted for a hospital like this one, below 1.0 is fewer.
- These are hospital-wide results. They do not rate an individual doctor, nurse or department, and they are not medical advice.
CMS Care Compare data retrieved 4 Oct 2026, refreshed weekly. Where this data comes from and how we handle it · Report an error
Common questions about Stamford Hospital
Is Stamford Hospital a good hospital?
Stamford Hospital has a CMS overall rating of 5 out of 5 stars. Of the 27 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 5 and worse on none. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend Stamford Hospital?
76% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 1,039 completed HCAHPS surveys.
How long is the wait in the Stamford Hospital emergency room?
Emergency patients spend a median of 3 h 20 min in its emergency department before leaving (US median 2 h 42 min). Among US emergency departments with very high patient volume, like this one, the median is 3 h 21 min. 2% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.
Does Stamford Hospital receive money from drug and device companies?
Drug and device makers reported $711,279 in payments to Stamford Hospital for 2025, most of it research funding, under the federal Open Payments program. A payment on its own does not show a conflict of interest.