University of Michigan Health System in Ann Arbor, MI
Also known as University of Michigan Medical Center
In a medical emergency, call 911. This page is for information only.
About University of Michigan Health System
University of Michigan Health System is an acute care hospital in Ann Arbor, Washtenaw County, Michigan. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. It is listed as a Level I trauma center. Its CMS Overall Hospital Quality Star Rating is 4 out of 5. It has 1,000 licensed beds, according to state license data via HIFLD. It meets the CMS Birthing-Friendly designation criteria for maternity care. The nearest other listed hospital is VA Ann Arbor Healthcare System, about 0.8 mi away.
Quality ratings
How this hospital compares with the national rate on each measure group:
Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.
Emergency room times
Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.
Infections and sepsis care
- MRSA bloodstream infectionsBetter than national · SIR 0.60
- Catheter-associated urinary tract infections (CAUTI)Better than national · SIR 0.53
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.50
- Central line bloodstream infections (CLABSI)Better than national · SIR 0.41
- Surgical site infections after abdominal hysterectomyNo different · SIR 1.35
- Surgical site infections after colon surgeryNo different · SIR 1.12
57% of patients with severe sepsis or septic shock received all the recommended early care steps (SEP-1). Higher is better.
SIR is the standardized infection ratio: below 1 means fewer infections than predicted for a hospital like this one. Period ending September 2025. Source: CMS Healthcare-Associated Infections and Timely and Effective Care.
What patients say
- Patient survey star rating
- Would definitely recommend82%
- Rated the hospital 9 or 1079%
- Completed surveys824
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
42.28140, -83.72678
Nearby hospitals
- VA Ann Arbor Healthcare System2215 Fuller Road, Ann Arbor, MI · Emergency roomVA medical center0.8 mi
- Trinity Health Ann Arbor Hospital5301 E Huron River Dr, Ann Arbor, MI · Emergency roomAcute care hospital4.0 mi
- Select Specialty Hospital-Ann Arbor5301 E Huron River Dr, 7th Fl, Ypsilanti, MILong-term care hospital5.8 mi
- Forest Health Medical Center135 S Prospect St, Ypsilanti, MIAcute care hospital7.0 mi
- The Center for Forensic Psychiatry8303 Platt Road, Saline, MIPsychiatric hospital7.8 mi
- Chelsea Hospital775 S Main St, Chelsea, MI · Emergency roomAcute care hospital15 mi
- Henry Ford Health Brighton Center for Recovery12851 Grand River Rd, Brighton, MIAcute care hospital16 mi
- Providence Park Hospital47601 Grand River Avenue, Novi, MI · Level II traumaHospital18 mi
- Corewell Health Wayne Hospital33155 Annapolis Ave, Wayne, MI · Emergency roomAcute care hospital18 mi
- Beaumont Hospital, Wayne33155 Annapolis Street, Wayne, MI · Level III traumaHospital18 mi
Frequently asked questions
Where is University of Michigan Health System located?
University of Michigan Health System is at 1500 E Medical Center Drive, Spc 5474, Ann Arbor, MI 48109 in Washtenaw County.
Does University of Michigan Health System have an emergency room?
Yes. University of Michigan Health System reports emergency services to Medicare, and patients spent a median of 345 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of University of Michigan Health System?
University of Michigan Health System has a CMS Overall Hospital Quality Star Rating of 4 out of 5. The rating combines measures of mortality, safety of care, readmission, patient experience and timely and effective care, compared with hospitals nationwide.
Is University of Michigan Health System a trauma center?
Yes. It is listed as a Level I trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date April 2024). Trauma designations are renewed periodically, so confirm with the Michigan EMS or trauma program. In an emergency, call 911: paramedics take seriously injured patients to the right trauma center.
What is the phone number of University of Michigan Health System?
The main phone number on record with Medicare is (734) 764-1505.
Would patients recommend University of Michigan Health System?
In the most recent HCAHPS patient survey (824 completed surveys), 82% of patients said they would definitely recommend the hospital, and 79% rated it 9 or 10 out of 10.
Related guides
- How CMS Hospital Star Ratings WorkThe five measure groups behind the 1 to 5 star Overall Hospital Quality Star Rating, how it is calculated and what it leaves out.
- How to Choose a Hospital to Give BirthLevels of maternal and newborn care, the CMS Birthing-Friendly designation, quality data and questions to ask on a tour.
- How to Choose a HospitalA practical checklist for planned care: insurance networks, procedure volume, quality ratings, certifications and cost estimates.
- ER Wait Times ExplainedHow triage and the Emergency Severity Index decide who is seen first, why emergency rooms get crowded and where to find timing data.