Hospital rankings

Hospitals in Connecticut with the lowest serious complications

26 Connecticut hospitals ranked by serious complications in the 2026 Medicare (CMS) data. Leading: Hartford Hospital, Yale-New Haven Hospital, MidState Medical Center. Filter by type, ownership and size, choose the measures you care about, and sort by any column.

CMS release

State

Size

CMS star rating

Emergency services

Hospital or city

26 hospitals ranked in Connecticut by serious complications; 10 more match but have no reported value.

Compare top 4 Download CSV

Hospital rankings, page 1 of 1. Columns can be sorted.
#	Hospital	Serious complicationslower is better	Central line bloodstream infectionslower is better	Catheter-associated urinary tract infectionslower is better	Surgical site infections (colon)lower is better	Surgical site infections (hysterectomy)lower is better	MRSA bloodstream infectionslower is better	C. diff infectionslower is better	Compare
	National average	1.00	1.00	1.00	1.00	1.00	1.00	1.00
1	Hartford HospitalHartford, CT · Acute care	0.67, 99th percentile	0.23, 71st percentile	0.14, 72nd percentile	0.39, 71st percentile	1.67, 22nd percentile	0.55, 55th percentile	0.56, 20th percentile	Compare Hartford Hospital
2	Yale-New Haven HospitalNew Haven, CT · Acute care	0.70, 98th percentile	0.57, 42nd percentile	0.37, 53rd percentile	0.91, 36th percentile	0.46, 72nd percentile	0.58, 52nd percentile	0.37, 37th percentile	Compare Yale-New Haven Hospital
3	MidState Medical CenterMeriden, CT · Acute care	0.71, 98th percentile	0.00, 90th percentile	0.24, 64th percentile	0.54, 61st percentile	—	0.30, 74th percentile	0.22, 59th percentile	Compare MidState Medical Center
4	William W Backus HospitalNorwich, CT · Acute care	0.76, 96th percentile	0.22, 72nd percentile	0.44, 46th percentile	0.00, 91st percentile	—	0.00, 91st percentile	0.04, 79th percentile	Compare William W Backus Hospital
5	Middlesex HospitalMiddletown, CT · Acute care	0.82, 90th percentile	0.21, 73rd percentile	1.23, 8th percentile	1.27, 21st percentile	—	0.00, 91st percentile	0.12, 72nd percentile	Compare Middlesex Hospital
6	Charlotte Hungerford HospitalTorrington, CT · Acute care	0.83, 89th percentile	0.00, 90th percentile	0.00, 88th percentile	1.44, 16th percentile	—	1.35, 10th percentile	0.26, 53rd percentile	Compare Charlotte Hungerford Hospital
7	Manchester Memorial HospitalManchester, CT · Acute care	0.85, 85th percentile	0.00, 90th percentile	0.29, 60th percentile	—	—	0.00, 91st percentile	0.55, 21st percentile	Compare Manchester Memorial Hospital
8	St Vincent's Medical CenterBridgeport, CT · Acute care	0.88, 78th percentile	0.90, 20th percentile	0.00, 88th percentile	1.13, 26th percentile	—	0.53, 57th percentile	0.18, 65th percentile	Compare St Vincent's Medical Center
9	Danbury HospitalDanbury, CT · Acute care	0.90, 73rd percentile	0.23, 72nd percentile	0.28, 61st percentile	1.22, 23rd percentile	1.56, 26th percentile	0.24, 78th percentile	0.18, 65th percentile	Compare Danbury Hospital
10	Bridgeport HospitalBridgeport, CT · Acute care	0.91, 70th percentile	0.58, 41st percentile	0.00, 88th percentile	0.39, 71st percentile	3.02, 4th percentile	0.51, 58th percentile	0.27, 52nd percentile	Compare Bridgeport Hospital
11	Greenwich Hospital Association -Greenwich, CT · Acute care	0.92, 67th percentile	0.37, 61st percentile	0.48, 41st percentile	1.13, 26th percentile	—	0.00, 91st percentile	0.26, 52nd percentile	Compare Greenwich Hospital Association -
12	Windham Community Memorial HospitalWillimantic, CT · Acute care	0.93, 63rd percentile	—	—	—	—	—	0.00, 90th percentile	Compare Windham Community Memorial Hospital
13	Sharon HospitalSharon, CT · Acute care	0.94, 59th percentile	—	—	—	—	—	0.85, 8th percentile	Compare Sharon Hospital
14	Stamford HospitalStamford, CT · Acute care	0.96, 51st percentile	1.09, 12th percentile	0.37, 53rd percentile	1.03, 30th percentile	—	0.55, 55th percentile	0.19, 63rd percentile	Compare Stamford Hospital
T15	Johnson Memorial HospitalStafford Springs, CT · Acute care	0.97, 46th percentile	—	—	—	—	—	0.00, 90th percentile	Compare Johnson Memorial Hospital
T15	Day Kimball HospitalPutnam, CT · Acute care	0.97, 46th percentile	—	—	—	—	—	0.56, 20th percentile	Compare Day Kimball Hospital
17	Norwalk HospitalNorwalk, CT · Acute care	0.98, 41st percentile	0.00, 90th percentile	0.69, 25th percentile	0.84, 41st percentile	—	0.56, 54th percentile	0.26, 53rd percentile	Compare Norwalk Hospital
18	Saint Mary's HospitalWaterbury, CT · Acute care	1.00, 35th percentile	0.24, 71st percentile	0.73, 23rd percentile	0.47, 66th percentile	—	0.00, 91st percentile	0.35, 40th percentile	Compare Saint Mary's Hospital
T19	Griffin HospitalDerby, CT · Acute care	1.01, 33rd percentile	0.61, 39th percentile	0.34, 56th percentile	0.00, 91st percentile	—	2.14, 2nd percentile	0.25, 55th percentile	Compare Griffin Hospital
T19	John Dempsey Hospital Of The University Of ConnectFarmington, CT · Acute care	1.01, 33rd percentile	0.56, 43rd percentile	0.52, 38th percentile	1.94, 6th percentile	—	0.00, 91st percentile	0.50, 24th percentile	Compare John Dempsey Hospital Of The University Of Connect
T19	West Haven VA Medical CenterWest Haven, CT · Veterans Affairs	1.01, 33rd percentile	—	0.00, 88th percentile	—	—	—	—	Compare West Haven VA Medical Center
22	The Hospital Of Central ConnecticutNew Britain, CT · Acute care	1.03, 29th percentile	0.26, 69th percentile	0.14, 72nd percentile	0.55, 60th percentile	0.52, 71st percentile	0.00, 91st percentile	0.17, 67th percentile	Compare The Hospital Of Central Connecticut
23	Lawrence & Memorial HospitalNew London, CT · Acute care	1.05, 26th percentile	0.13, 77th percentile	0.19, 68th percentile	0.92, 36th percentile	—	0.29, 75th percentile	0.37, 37th percentile	Compare Lawrence & Memorial Hospital
24	Bristol HospitalBristol, CT · Acute care	1.12, 17th percentile	—	—	—	—	—	0.45, 28th percentile	Compare Bristol Hospital
25	Waterbury HospitalWaterbury, CT · Acute care	1.18, 12th percentile	0.22, 72nd percentile	0.22, 65th percentile	0.29, 76th percentile	—	1.57, 7th percentile	0.35, 39th percentile	Compare Waterbury Hospital
26	St Francis Hospital & Medical CenterHartford, CT · Acute care	1.39, 4th percentile	0.94, 18th percentile	0.07, 75th percentile	0.95, 34th percentile	0.59, 66th percentile	0.43, 65th percentile	0.27, 52nd percentile	Compare St Francis Hospital & Medical Center

About these rankings

Rankings use the 2026 release of CMS Care Compare data. Hospitals share a rank (“T”) when their values are equal, and only hospitals with a reported value for the sorted measure are ranked. Shading compares each value with every hospital in the country, so it doesn’t change with your filters. Small differences are often not statistically meaningful; use the methodology and glossary for context.

Serious complications: Patient safety and adverse events composite (PSI 90; 1.0 = national value).
Central line bloodstream infections: Central line-associated bloodstream infections (CLABSI) in ICUs and select wards (standardized infection ratio; 1.0 = national baseline).
Catheter-associated urinary tract infections: Catheter-associated urinary tract infections (CAUTI) in ICUs and select wards (standardized infection ratio; 1.0 = national baseline).
Surgical site infections (colon): Surgical site infections from colon surgery (standardized infection ratio; 1.0 = national baseline).
Surgical site infections (hysterectomy): Surgical site infections from abdominal hysterectomy (standardized infection ratio; 1.0 = national baseline).
MRSA bloodstream infections: Methicillin-resistant Staphylococcus aureus (MRSA) blood laboratory-identified events (standardized infection ratio; 1.0 = national baseline).
C. diff infections: Clostridium difficile (C. diff) intestinal infections (standardized infection ratio; 1.0 = national baseline).