Hospital rankings

Hospitals in Colorado with the lowest left ED without being seen

70 Colorado hospitals ranked by left ED without being seen in the 2026 Medicare (CMS) data. Leading: Longs Peak Hospital, Medical Center Of The Rockies, Mt San Rafael Hospital. Filter by type, ownership and size, choose the measures you care about, and sort by any column.

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CMS star rating

Emergency services

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70 hospitals ranked in Colorado by left ed without being seen; 26 more match but have no reported value.

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Hospital rankings, page 1 of 2. Columns can be sorted.
#	Hospital	Left ED without being seenlower is better	Time in emergency departmentlower is better	Appropriate sepsis carehigher is better	Health care workers vaccinated for fluhigher is better	Compare
	National average	2.0%	162 min	65.0%	78.0%
T1	Longs Peak HospitalLongmont, CO · Acute care	0.0%, 88th percentile	130 min, 65th percentile	78.0%, 81st percentile	98.0%, 97th percentile	Compare Longs Peak Hospital
T1	Medical Center Of The RockiesLoveland, CO · Acute care	0.0%, 88th percentile	133 min, 62nd percentile	72.0%, 67th percentile	97.0%, 94th percentile	Compare Medical Center Of The Rockies
T1	Mt San Rafael HospitalTrinidad, CO · Critical access	0.0%, 88th percentile	107 min, 85th percentile	93.0%, 99th percentile	96.0%, 92nd percentile	Compare Mt San Rafael Hospital
T1	Poudre Valley HospitalFort Collins, CO · Acute care	0.0%, 88th percentile	127 min, 68th percentile	75.0%, 74th percentile	97.0%, 94th percentile	Compare Poudre Valley Hospital
T1	UCHealth Highlands Ranch HospitalHighlands Ranch, CO · Acute care	0.0%, 88th percentile	164 min, 39th percentile	83.0%, 90th percentile	96.0%, 92nd percentile	Compare UCHealth Highlands Ranch Hospital
T1	University Of Colorado Hospital AuthorityAurora, CO · Acute care	0.0%, 88th percentile	102 min, 89th percentile	76.0%, 77th percentile	97.0%, 94th percentile	Compare University Of Colorado Hospital Authority
T1	AdventHealth AvistaLouisville, CO · Acute care	0.0%, 88th percentile	166 min, 38th percentile	76.0%, 77th percentile	82.0%, 55th percentile	Compare AdventHealth Avista
T1	AdventHealth PorterDenver, CO · Acute care	0.0%, 88th percentile	199 min, 20th percentile	82.0%, 88th percentile	87.0%, 65th percentile	Compare AdventHealth Porter
T1	St Elizabeth HospitalFort Morgan, CO · Acute care	0.0%, 88th percentile	106 min, 86th percentile	69.0%, 59th percentile	93.0%, 81st percentile	Compare St Elizabeth Hospital
T1	UCH-Memorial Health SystemColorado Springs, CO · Acute care	0.0%, 88th percentile	103 min, 88th percentile	74.0%, 72nd percentile	95.0%, 88th percentile	Compare UCH-Memorial Health System
T1	UCHealth Greeley HospitalGreeley, CO · Acute care	0.0%, 88th percentile	132 min, 63rd percentile	68.0%, 57th percentile	98.0%, 97th percentile	Compare UCHealth Greeley Hospital
T1	HCA Healthone Mountain RidgeThornton, CO · Acute care	0.0%, 88th percentile	126 min, 69th percentile	68.0%, 57th percentile	79.0%, 49th percentile	Compare HCA Healthone Mountain Ridge
T1	Sky Ridge Medical CenterLone Tree, CO · Acute care	0.0%, 88th percentile	139 min, 57th percentile	80.0%, 85th percentile	84.0%, 59th percentile	Compare Sky Ridge Medical Center
T1	HCA Healthone Presbyterian St. LukesDenver, CO · Acute care	0.0%, 88th percentile	121 min, 73rd percentile	78.0%, 81st percentile	93.0%, 81st percentile	Compare HCA Healthone Presbyterian St. Lukes
T1	Banner Fort Collins Medical CenterFort Collins, CO · Acute care	0.0%, 88th percentile	118 min, 76th percentile	61.0%, 39th percentile	94.0%, 85th percentile	Compare Banner Fort Collins Medical Center
T1	Grand River Hospital DistrictRifle, CO · Critical access	0.0%, 88th percentile	110 min, 82nd percentile	94.0%, 99th percentile	95.0%, 88th percentile	Compare Grand River Hospital District
T1	Kit Carson County Memorial HospitalBurlington, CO · Critical access	0.0%, 88th percentile	115 min, 78th percentile	—	94.0%, 85th percentile	Compare Kit Carson County Memorial Hospital
T1	Lincoln Health HospitalHugo, CO · Critical access	0.0%, 88th percentile	94 min, 93rd percentile	—	94.0%, 85th percentile	Compare Lincoln Health Hospital
T1	Melissa Memorial HospitalHolyoke, CO · Critical access	0.0%, 88th percentile	140 min, 56th percentile	—	85.0%, 61st percentile	Compare Melissa Memorial Hospital
T1	San Luis Valley Health Conejos County HospitalLa Jara, CO · Critical access	0.0%, 88th percentile	94 min, 93rd percentile	—	96.0%, 92nd percentile	Compare San Luis Valley Health Conejos County Hospital
T1	St Anthony Summit Medical CenterFrisco, CO · Acute care	0.0%, 88th percentile	151 min, 48th percentile	81.0%, 87th percentile	95.0%, 88th percentile	Compare St Anthony Summit Medical Center
T1	St Francis Hospital - InterquestColorado Springs, CO · Acute care	0.0%, 88th percentile	118 min, 76th percentile	91.0%, 98th percentile	95.0%, 88th percentile	Compare St Francis Hospital - Interquest
T1	The Memorial HospitalCraig, CO · Critical access	0.0%, 88th percentile	122 min, 72nd percentile	—	89.0%, 70th percentile	Compare The Memorial Hospital
T1	UCHealth Pikes Peak Regional HospitalWoodland Park, CO · Critical access	0.0%, 88th percentile	109 min, 83rd percentile	—	94.0%, 85th percentile	Compare UCHealth Pikes Peak Regional Hospital
T1	UCHealth Yampa Valley Medical CenterSteamboat Springs, CO · Acute care	0.0%, 88th percentile	116 min, 77th percentile	79.0%, 83rd percentile	98.0%, 97th percentile	Compare UCHealth Yampa Valley Medical Center
T1	Wray Community District HospitalWray, CO · Critical access	0.0%, 88th percentile	109 min, 83rd percentile	—	94.0%, 85th percentile	Compare Wray Community District Hospital
T1	Yuma District HospitalYuma, CO · Critical access	0.0%, 88th percentile	125 min, 70th percentile	—	99.0%, 99th percentile	Compare Yuma District Hospital
T28	AdventHealth Castle RockCastle Rock, CO · Acute care	1.0%, 60th percentile	165 min, 39th percentile	81.0%, 87th percentile	84.0%, 59th percentile	Compare AdventHealth Castle Rock
T28	AdventHealth ParkerParker, CO · Acute care	1.0%, 60th percentile	165 min, 39th percentile	74.0%, 72nd percentile	90.0%, 73rd percentile	Compare AdventHealth Parker
T28	Centura Health-St Anthony North Health CampusWestminster, CO · Acute care	1.0%, 60th percentile	160 min, 42nd percentile	85.0%, 93rd percentile	92.0%, 78th percentile	Compare Centura Health-St Anthony North Health Campus
T28	Mercy Regional Medical CenterDurango, CO · Acute care	1.0%, 60th percentile	166 min, 38th percentile	67.0%, 54th percentile	94.0%, 85th percentile	Compare Mercy Regional Medical Center
T28	Saint Joseph HospitalDenver, CO · Acute care	1.0%, 60th percentile	165 min, 39th percentile	73.0%, 69th percentile	92.0%, 78th percentile	Compare Saint Joseph Hospital
T28	Vail Health HospitalVail, CO · Acute care	1.0%, 60th percentile	141 min, 55th percentile	83.0%, 90th percentile	97.0%, 94th percentile	Compare Vail Health Hospital
T28	AdventHealth LittletonLittleton, CO · Acute care	1.0%, 60th percentile	166 min, 38th percentile	82.0%, 88th percentile	83.0%, 57th percentile	Compare AdventHealth Littleton
T28	Banner North Colorado Medical CenterGreeley, CO · Acute care	1.0%, 60th percentile	137 min, 59th percentile	48.0%, 16th percentile	94.0%, 85th percentile	Compare Banner North Colorado Medical Center
T28	Boulder Community HealthBoulder, CO · Acute care	1.0%, 60th percentile	135 min, 61st percentile	56.0%, 28th percentile	95.0%, 88th percentile	Compare Boulder Community Health
T28	Centura Health-St Anthony HospitalLakewood, CO · Acute care	1.0%, 60th percentile	212 min, 14th percentile	81.0%, 87th percentile	91.0%, 75th percentile	Compare Centura Health-St Anthony Hospital
T28	Good Samaritan Medical Center LLCLafayette, CO · Acute care	1.0%, 60th percentile	176 min, 32nd percentile	65.0%, 49th percentile	91.0%, 75th percentile	Compare Good Samaritan Medical Center LLC
T28	HCA Healthone RoseDenver, CO · Acute care	1.0%, 60th percentile	130 min, 65th percentile	80.0%, 85th percentile	75.0%, 42nd percentile	Compare HCA Healthone Rose
T28	Intermountain Health Lutheran HospitalWheat Ridge, CO · Acute care	1.0%, 60th percentile	194 min, 22nd percentile	75.0%, 74th percentile	93.0%, 81st percentile	Compare Intermountain Health Lutheran Hospital
T28	St Mary-Corwin HospitalPueblo, CO · Acute care	1.0%, 60th percentile	164 min, 39th percentile	78.0%, 81st percentile	95.0%, 88th percentile	Compare St Mary-Corwin Hospital
T28	St Thomas More HospitalCanon City, CO · Critical access	1.0%, 60th percentile	143 min, 54th percentile	69.0%, 59th percentile	97.0%, 94th percentile	Compare St Thomas More Hospital
T28	Swedish Medical CenterEnglewood, CO · Acute care	1.0%, 60th percentile	122 min, 72nd percentile	77.0%, 79th percentile	83.0%, 57th percentile	Compare Swedish Medical Center
T28	The Medical Center Of Aurora & South HospitalAurora, CO · Acute care	1.0%, 60th percentile	134 min, 62nd percentile	72.0%, 67th percentile	73.0%, 39th percentile	Compare The Medical Center Of Aurora & South Hospital
T28	Valley View Hospital AssociationGlenwood Springs, CO · Acute care	1.0%, 60th percentile	152 min, 48th percentile	65.0%, 49th percentile	100.0%, 100th percentile	Compare Valley View Hospital Association
T28	Banner North Co Medical Center - Loveland CampusLoveland, CO · Acute care	1.0%, 60th percentile	140 min, 56th percentile	42.0%, 10th percentile	94.0%, 85th percentile	Compare Banner North Co Medical Center - Loveland Campus
T28	Intermountain Health Platte Valley HospitalBrighton, CO · Acute care	1.0%, 60th percentile	166 min, 38th percentile	74.0%, 72nd percentile	91.0%, 75th percentile	Compare Intermountain Health Platte Valley Hospital
T28	Longmont United HospitalLongmont, CO · Acute care	1.0%, 60th percentile	153 min, 47th percentile	77.0%, 79th percentile	91.0%, 75th percentile	Compare Longmont United Hospital
T28	San Luis Valley Regional Medical CenterAlamosa, CO · Acute care	1.0%, 60th percentile	168 min, 37th percentile	76.0%, 77th percentile	91.0%, 75th percentile	Compare San Luis Valley Regional Medical Center
T28	Sterling Regional MedCenterSterling, CO · Acute care	1.0%, 60th percentile	97 min, 92nd percentile	66.0%, 52nd percentile	89.0%, 70th percentile	Compare Sterling Regional MedCenter

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.

Left ED without being seen: Percentage of patients who left the emergency department before being seen.
Time in emergency department: Median time patients spent in the emergency department before leaving.
Appropriate sepsis care: Percentage of patients who received appropriate care for severe sepsis and septic shock.
Health care workers vaccinated for flu: Percentage of health care workers given influenza vaccination.