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Home / Hospitals / New Hampshire / Portsmouth / Portsmouth Regional Hospital
DBelow average · score 31/100 · #23 of 24 in New Hampshire

Portsmouth Regional Hospital

333 Borthwick Ave, Portsmouth, NH 03801 · Acute care hospital · Proprietary

CMS overall rating 3 of 5below median among New Hampshire acute care hospitals
Mortality: 0 measures better than the national rate, 1 worse, of 8
Safety: 2 measures better than the national rate, 0 worse, of 7

Why Portsmouth Regional Hospital is graded D

Each metric below is percentile-ranked against New Hampshire 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.

Portsmouth Regional Hospital at a Glance

D 31/100
CMS overall rating · weight 25Medicare's 1–5 star summary of mortality, safety, readmission, patient experience and timely care. Raw: 3 of 5.
35<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, 1 worse of 8 measures (net -1).
4<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: 2 better, 0 worse of 7 measures (net +2).
77<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, 2 worse of 9 measures (net -2).
8<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.
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Data: CMS Care Compare, imported Sep 11, 2026 · graded Sep 11, 2026 · peer group: New Hampshire, acute care hospitals · CMS record 300029 · How we grade.

Hospital details

Address333 Borthwick Ave, Portsmouth, NH 03801
Phone(603) 436-5110
CountyROCKINGHAM
TypeAcute Care Hospitals
OwnershipProprietary
Emergency servicesYes
Birthing-Friendly designationYes (CMS)

Higher-graded hospitals nearby

1

St Joseph Hospital - Nashua, NH · Acute care hospital

  • CMS overall rating 4 of 5 — top quarter among New Hampshire acute care hospitals
  • Mortality: 0 measures better than the national rate, 0 worse, of 7
ASee Grade
1

Parkland Medical Center - Derry, NH · Acute care hospital

  • CMS overall rating 4 of 5 — top quarter among New Hampshire acute care hospitals
  • Mortality: 2 measures better than the national rate, 0 worse, of 6
ASee Grade
1

Exeter Hospital Inc - Exeter, NH · Acute care hospital

  • CMS overall rating 4 of 5 — top quarter among New Hampshire acute care hospitals
  • Mortality: 0 measures better than the national rate, 0 worse, of 6
BSee Grade

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.