The CMS Overall Hospital Quality Star Rating applies to
acute care hospitals like William Newton Hospital. CMS standardizes
every underlying measure against the national rate, computes
a weighted score for each of five domains, sums them by the
fixed weights below, and assigns 1–5 stars using k-means
clustering across all reporting hospitals.
Domains that fed William Newton Hospital's rating
| Domain | Weight | Measures reported | Hospital performance vs. national |
| Mortality | 22% | 4 of 7 | 0 better 3 same 1 worse |
| Safety of Care | 22% | 1 of 19 | 0 better 1 same 0 worse |
| Readmissions | 22% | 0 of 6 | Not reported |
| Timely & Effective Care | 12% | 13 of 22 | 6 better 5 same 2 worse |
| Patient Experience | 22% | HCAHPS | See HCAHPS detail below |
How star meaning varies by hospital type.
This CMS Overall Star Rating only applies to acute care
hospitals. Children's hospitals (Pediatric Quality), psychiatric
hospitals (IPFQR), inpatient rehabilitation facilities (IRF QRP),
long-term acute care hospitals (LTACH QRP), and VA medical centers
each use separate quality programs designed for their patient
populations. Comparing star ratings across these facility types
isn't meaningful — see the methodology page for the full mapping
of which program applies to which facility.