What is Medstar Union Memorial Hospital's CMS star rating?

As of April 2026, Medstar Union Memorial Hospital in Baltimore, MD holds a CMS Overall Star Rating of 5 stars — the official quality rating published by the Centers for Medicare & Medicaid Services (CMS) on Hospital Care Compare.

What is the Gera US Hospital Quality Index score for Medstar Union Memorial Hospital?

The Gera US Hospital Quality Index (GUHQI) for Medstar Union Memorial Hospital is 100/100, placing it in the "Exceptional" tier. The GUHQI is a transparent composite of CMS star rating, mortality outcomes, readmission outcomes, and HCAHPS patient-experience coverage.

How does Medstar Union Memorial Hospital perform on mortality and readmission?

Medstar Union Memorial Hospital has 1 mortality measure statistically better than the national rate and 0 worse, plus 4 readmission measures better and 0 worse, per CMS Hospital Care Compare (April 2026).

Is Medstar Union Memorial Hospital a good hospital?

Medstar Union Memorial Hospital holds a CMS 5 stars — one of the highest ratings awarded by the U.S. government's official hospital comparison tool. Its Gera US Hospital Quality Index of 100/100 (Exceptional) reflects strong performance on multiple CMS quality measures. Always consult CMS Hospital Care Compare and your own clinician before making any healthcare decision.

What does the CMS star rating measure?

The CMS Overall Star Rating is a 1–5 summary of hospital quality across five groups of measures: mortality, safety of care, readmission, patient experience (HCAHPS), and timely & effective care. CMS computes it via a latent-variable methodology, weighting mortality and readmission most heavily.

When was this data last updated?

This page reflects CMS Hospital Care Compare data as of April 2026. CMS updates the dataset periodically. Gera re-dates these pages whenever a new CMS release is available. The current GUHQI computation used the CMS API snapshot downloaded on 19 June 2026.

Medstar Union Memorial Hospital

Baltimore, MD · Baltimore City County · Acute Care Hospitals · CMS 5 stars · April 2026

What is Medstar Union Memorial Hospital's hospital quality rating?

As of April 2026, Medstar Union Memorial Hospital in Baltimore, MD holds a CMS Overall Star Rating of 5 stars — the official rating published by the Centers for Medicare & Medicaid Services. Its Gera US Hospital Quality Index (GUHQI) is 100/100, in the "Exceptional" tier, derived from real CMS mortality, readmission, and HCAHPS data.

Source:Centers for Medicare & Medicaid Services — Hospital Care Compare (Hospital General Information)·as of April 2026updated quarterly (last: 20 June 2026)

Gera US Hospital Quality Index100 / 100Exceptional tier — derived from CMS 5 stars star rating, 1 mortality and 4 readmission measures better than the national rate, and HCAHPS coverage. See the full formula on the methodology page.How this index is calculated

Medstar Union Memorial Hospital — CMS Hospital Care Compare, April 2026 (CMS, US public domain)
CMS measure	Value	Context
Overall Star Rating	5 stars (of 5)	CMS official composite quality rating
Gera US Hospital Quality Index	100 / 100	Exceptional tier — see methodology
Hospital type	Acute Care Hospitals
Ownership	Voluntary non-profit - Other
Emergency services	Yes
Mortality measures better than national	1	Statistically better than US average rate
Mortality measures worse than national	0	Statistically worse than US average rate
Readmission measures better than national	4	Statistically better than US average rate
Readmission measures worse than national	0	Statistically worse than US average rate
HCAHPS patient-experience measures	15	Number of measures reported (max 15)

CMS Facility ID (CCN): 210024. View the full profile on CMS Hospital Care Compare. Ratings can be several months old — always check the latest detail before making any healthcare decision.

Rank the top hospitals in any US state

Pick a state to see its highest-GUHQI hospitals, their real CMS star ratings, and links to their individual quality profiles.

Choose a state to rank its top hospitals by Gera US Hospital Quality Index

Top hospital in Maryland by GUHQI

Calverthealth Medical Center

GUHQI100 / 100

CMS rating5 stars

TierExceptional

LocationPrince Frederick, MD

View Calverthealth Medical Center quality profile →

Top 9 hospitals in Maryland by Gera US Hospital Quality Index (April 2026)

1.
Calverthealth Medical CenterPrince Frederick, MD
100/1005 stars
2.
Greater Baltimore Medical CenterBaltimore, MD
100/1005 stars
3.
Medstar Union Memorial HospitalBaltimore, MD
100/1005 stars
4.
University Of Md Baltimore Washington Medical CenterGlen Burnie, MD
100/1005 stars
5.
University Of Md St Joseph Medical CenterTowson, MD
100/1005 stars
6.
Johns Hopkins Hospital, TheBaltimore, MD
91.8/1005 stars
7.
University Of Md Shore Medical Ctr At ChestertownChestertown, MD
90.9/1005 stars
8.
Medstar Harbor HospitalBaltimore, MD
86.4/1004 stars
9.
Western Maryland Regional Medical CenterCumberland, MD
83.9/1004 stars

Rankings use the Gera US Hospital Quality Index (GUHQI), a transparent 0–100 score derived from CMS Overall Star Ratings, mortality outcomes, readmission outcomes, and HCAHPS coverage. See the full formula. Only hospitals with an official CMS star rating (4 or 5 stars) are listed. Check the latest data on CMS Hospital Care Compare before making any healthcare decision.

Other top-rated hospitals in Maryland

Calverthealth Medical Center(Prince Frederick)GUHQI 100 · 5 stars
Greater Baltimore Medical Center(Baltimore)GUHQI 100 · 5 stars
University Of Md Baltimore Washington Medical Center(Glen Burnie)GUHQI 100 · 5 stars
University Of Md St Joseph Medical Center(Towson)GUHQI 100 · 5 stars
Johns Hopkins Hospital, The(Baltimore)GUHQI 91.8 · 5 stars

Frequently asked questions

What is Medstar Union Memorial Hospital's CMS star rating?: As of April 2026, Medstar Union Memorial Hospital in Baltimore, MD holds a CMS Overall Star Rating of 5 stars — the official quality rating published by the Centers for Medicare & Medicaid Services (CMS) on Hospital Care Compare.
What is the Gera US Hospital Quality Index score for Medstar Union Memorial Hospital?: The Gera US Hospital Quality Index (GUHQI) for Medstar Union Memorial Hospital is 100/100, placing it in the "Exceptional" tier. The GUHQI is a transparent composite of CMS star rating, mortality outcomes, readmission outcomes, and HCAHPS patient-experience coverage.
How does Medstar Union Memorial Hospital perform on mortality and readmission?: Medstar Union Memorial Hospital has 1 mortality measure statistically better than the national rate and 0 worse, plus 4 readmission measures better and 0 worse, per CMS Hospital Care Compare (April 2026).
Is Medstar Union Memorial Hospital a good hospital?: Medstar Union Memorial Hospital holds a CMS 5 stars — one of the highest ratings awarded by the U.S. government's official hospital comparison tool. Its Gera US Hospital Quality Index of 100/100 (Exceptional) reflects strong performance on multiple CMS quality measures. Always consult CMS Hospital Care Compare and your own clinician before making any healthcare decision.
What does the CMS star rating measure?: The CMS Overall Star Rating is a 1–5 summary of hospital quality across five groups of measures: mortality, safety of care, readmission, patient experience (HCAHPS), and timely & effective care. CMS computes it via a latent-variable methodology, weighting mortality and readmission most heavily.
When was this data last updated?: This page reflects CMS Hospital Care Compare data as of April 2026. CMS updates the dataset periodically. Gera re-dates these pages whenever a new CMS release is available. The current GUHQI computation used the CMS API snapshot downloaded on 19 June 2026.

Preparing for care at Medstar Union Memorial Hospital?

Medstar Union Memorial Hospital holds a CMS 5 stars and a Gera US Hospital Quality Index of 100/100 (Exceptional). A GeraClinic care navigator can help you interpret this data, prepare questions for your provider, and navigate your next step — with a clinician available online.

Talk to a GeraClinic care navigator How the Gera US Hospital Quality Index is calculated

Contains public sector information published by Centers for Medicare & Medicaid Services and licensed under the U.S. Public Domain (federal government work). Source: Centers for Medicare & Medicaid Services — Hospital Care Compare (Hospital General Information) (April 2026, published 28 April 2026).

Informational/educational only — not a substitute for professional medical advice; a clinician interprets results.