CMS overall rating 2 of 5bottom quarter among Arizona acute care hospitals
Mortality: 0 measures better than the national rate, 0 worse, of 8
Safety: 1 measure better than the national rate, 0 worse, of 5
Why St. Mary's Hospital is graded D
Each metric below is percentile-ranked against Arizona hospitals of the same type (acute care hospitals), then weighted. The score is the weighted sum; A ≥ 72, B ≥ 58, C ≥ 42, D ≥ 28, F below. Nothing here can be edited or paid for.
St. Mary's Hospital at a Glance
D
36/100
CMS overall rating · weight 25Medicare's 1–5 star summary of mortality, safety, readmission, patient experience and timely care. Raw: 2 of 5.
17<small style="font-size:12px;color:var(--muted)">th pct</small>Mortality · weight 25Net count of death-rate measures where the hospital is better than the national rate minus those where it is worse (heart attack, heart failure, pneumonia, stroke, CABG, COPD, surgical). Raw: 0 better, 0 worse of 8 measures (net +0).
49<small style="font-size:12px;color:var(--muted)">th pct</small>Safety of care · weight 25Net count of safety measures better than the national rate minus worse (infections, complications, falls, pressure injuries). Raw: 1 better, 0 worse of 5 measures (net +1).
51<small style="font-size:12px;color:var(--muted)">th pct</small>Readmission · weight 25Net count of unplanned-readmission measures better than the national rate minus worse. Raw: 0 better, 1 worse of 8 measures (net -1).
28<small style="font-size:12px;color:var(--muted)">th pct</small>Patient experience and timely careCMS reports 15 patient-experience and 8 timely-and-effective-care measures for this hospital; they feed the CMS overall rating above rather than being graded separately.
–Data: CMS Care Compare, imported Sep 11, 2026 · graded Sep 11, 2026 · peer group: Arizona, acute care hospitals · CMS record 030010 · How we grade.
Hospital details
Address1601 West St Mary's Road, Tucson, AZ 85745
Phone(520) 872-3000
CountyPIMA
TypeAcute Care Hospitals
OwnershipVoluntary non-profit - Private
Emergency servicesYes
Higher-graded hospitals nearby
1
Banner - University Medical Center Tucson Campus - Tucson, AZ · Acute care hospital
- CMS overall rating 3 of 5 — above median among Arizona acute care hospitals
- Mortality: 0 measures better than the national rate, 0 worse, of 8
2
Va S. Arizona Healthcare System - Tucson, AZ · Acute care hospital
- CMS overall rating 5 of 5 — top 10% among Arizona acute care hospitals
- Mortality: 2 measures better than the national rate, 0 worse, of 5
3
Banner-University Medical Center South Campus - Tucson, AZ · Acute care hospital
- CMS overall rating 4 of 5 — top quarter among Arizona acute care hospitals
- Mortality: 0 measures better than the national rate, 0 worse, of 5
A grade is a shortlist tool, not medical advice. In an emergency go to the nearest emergency department. For planned care, ask about the specific procedure's volume and outcomes and check your insurer's network.