| Fairview Hospital ER wait timeGreat Barrington | 1 hr 54 minCMS median | 3/5 |
| Nantucket Cottage Hospital ER wait timeNantucket | 1 hr 56 minCMS median | — |
| Martha's Vineyard Hospital Inc ER wait timeOak Bluffs | 2 hr 37 minCMS median | 4/5 |
| Falmouth Hospital ER wait timeFalmouth | 2 hr 40 minCMS median | 4/5 |
| Massachusetts Eye and Ear Infirmary - ER wait timeBoston | 2 hr 48 minCMS median | — |
| Saint Anne's Hospital ER wait timeFall River | 3 hr 10 minCMS median | 3/5 |
| Anna Jaques Hospital ER wait timeNewburyport | 3 hr 12 minCMS median | 3/5 |
| Baystate Franklin Medical Center ER wait timeGreenfield | 3 hr 12 minCMS median | 4/5 |
| Heywood Hospital - ER wait timeGardner | 3 hr 14 minCMS median | 3/5 |
| Northeast Hospital Corporation ER wait timeBeverly | 3 hr 14 minCMS median | 3/5 |
| Beth Israel Deaconess Hospital - Needham ER wait timeNeedham | 3 hr 18 minCMS median | 4/5 |
| Cape Cod Hospital ER wait timeHyannis | 3 hr 22 minCMS median | 3/5 |
| Baystate Wing Hospital ER wait timePalmer | 3 hr 29 minCMS median | 5/5 |
| Mount Auburn Hospital ER wait timeCambridge | 3 hr 32 minCMS median | 4/5 |
| Umass Memorial Health - Harrington Hospital ER wait timeSouthbridge | 3 hr 35 minCMS median | 2/5 |
| Baystate Noble Hospital ER wait timeWestfield | 3 hr 36 minCMS median | 2/5 |
| St. Vincent Hospital ER wait timeWorcester | 3 hr 40 minCMS median | 2/5 |
| South Shore Hospital ER wait timeSouth Weymouth | 3 hr 45 minCMS median | 3/5 |
| Metrowest Medical Center ER wait timeFramingham | 3 hr 47 minCMS median | 1/5 |
| Winchester Hospital ER wait timeWinchester | 3 hr 49 minCMS median | 3/5 |
| Umass Memorial Healthcare-Marlborough Hospital ER wait timeMarlborough | 3 hr 56 minCMS median | 2/5 |
| Beth Israel Deaconess Hospital - Milton ER wait timeMilton | 3 hr 59 minCMS median | 4/5 |
| Boston Medical Center ER wait timeBoston | 4 hr 1 minCMS median | 3/5 |
| Beth Israel Deaconess Hospital Plymouth ER wait timePlymouth | 4 hr 2 minCMS median | 4/5 |
| Lawrence General Hospital ER wait timeLawrence | 4 hr 5 minCMS median | 3/5 |
| Berkshire Medical Center ER wait timePittsfield | 4 hr 8 minCMS median | 4/5 |
| Cooley Dickinson Hospital Inc,the ER wait timeNorthampton | 4 hr 12 minCMS median | 3/5 |
| Brigham and Women Faulkner Hospital ER wait timeJamaica Plain | 4 hr 15 minCMS median | 5/5 |
| Newton-Wellesley Hospital ER wait timeNewton | 4 hr 23 minCMS median | 5/5 |
| Holyoke Medical Center ER wait timeHolyoke | 4 hr 27 minCMS median | 2/5 |
| Baystate Medical Center ER wait timeSpringfield | 4 hr 42 minCMS median | 1/5 |
| Massachusetts General Hospital ER wait timeBoston | 4 hr 43 minCMS median | 5/5 |
| Umass Memorial Medical Center/University Campus ER wait timeWorcester | 4 hr 56 minCMS median | 3/5 |
| Brigham and Women's Hospital ER wait timeBoston | 5 hr 9 minCMS median | 5/5 |
| Beth Israel Deaconess Medical Center ER wait timeBoston | 5 hr 48 minCMS median | 4/5 |