Northwestern Medicine McHenry in McHenry, IL
Also known as Northwestern Medicine McHenry Hospital
In a medical emergency, call 911. This page is for information only.
About Northwestern Medicine McHenry
Northwestern Medicine McHenry is an acute care hospital in McHenry, McHenry County, Illinois. It reports its ownership to Medicare as nonprofit (other). It provides emergency services. Its CMS Overall Hospital Quality Star Rating is 5 out of 5. It has 143 licensed beds, according to state license data via HIFLD. CMS also lists an inpatient rehabilitation unit inside the hospital. It meets the CMS Birthing-Friendly designation criteria for maternity care. The nearest other listed hospital is Mercyhealth Hospital & Physician Clinic-Crystal La, about 6.7 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 infectionsNo different · SIR 1.07
- Catheter-associated urinary tract infections (CAUTI)Better than national · SIR 0.14
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.24
- Central line bloodstream infections (CLABSI)No different · SIR 0.40
- Surgical site infections after colon surgeryNo different · SIR 0.75
77% 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 recommend75%
- Rated the hospital 9 or 1075%
- Completed surveys1,158
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
42.31849, -88.27695
Nearby hospitals
- Mercyhealth Hospital & Physician Clinic-Crystal La875 S Route 31, Crystal Lake, IL · Level III traumaAcute care hospital6.7 mi
- Northwestern Medicine Woodstock Hospital3701 Doty Road, Woodstock, IL · Level II traumaHospital7.0 mi
- Advocate Good Shepherd Hospital450 IL 22, Barrington, IL · Level II traumaHospital10.0 mi
- Advocate Good Shepherd Hospital450 West Highway 22, Barrington, IL · Emergency roomAcute care hospital12 mi
- Encompass Health Rehab Institute of Libertyville1201 American Way, Libertyville, ILRehabilitation hospital14 mi
- Advocate Condell Medical Center801 S Milwaukee Ave, Libertyville, IL · Level I traumaAcute care hospital17 mi
- Mercy Harvard Hospital901 S Grant Street, Harvard, IL · Emergency roomCritical access hospital18 mi
- Advocate Sherman Hospital1425 North Randall Road, Elgin, IL · Level II traumaAcute care hospital18 mi
- St Alexius Medical Center1555 N Barrington Rd, Hoffman Estates, IL · Level II traumaAcute care hospital20 mi
- Alexian Brothers Behavioral Hlth Hosp1650 Moon Lake Blvd, Hoffman Estates, ILPsychiatric hospital20 mi
Frequently asked questions
Where is Northwestern Medicine McHenry located?
Northwestern Medicine McHenry is at 4201 Medical Center Drive, McHenry, IL 60050 in McHenry County.
Does Northwestern Medicine McHenry have an emergency room?
Yes. Northwestern Medicine McHenry reports emergency services to Medicare, and patients spent a median of 194 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Northwestern Medicine McHenry?
Northwestern Medicine McHenry has a CMS Overall Hospital Quality Star Rating of 5 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 Northwestern Medicine McHenry a trauma center?
We have no trauma center designation on record for Northwestern Medicine McHenry. Hospitals without one still treat injuries in their emergency department and transfer patients who need a trauma center. Check the Illinois trauma program for the current list.
What is the phone number of Northwestern Medicine McHenry?
The main phone number on record with Medicare is (815) 344-5000.
Would patients recommend Northwestern Medicine McHenry?
In the most recent HCAHPS patient survey (1,158 completed surveys), 75% of patients said they would definitely recommend the hospital, and 75% 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 HospitalA practical checklist for planned care: insurance networks, procedure volume, quality ratings, certifications and cost estimates.
- 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.
- 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.