Mercyhealth Hospital & Physician Clinic-Crystal La in Crystal Lake, IL
In a medical emergency, call 911. This page is for information only.
About Mercyhealth Hospital & Physician Clinic-Crystal La
Mercyhealth Hospital & Physician Clinic-Crystal La is an acute care hospital in Crystal Lake, McHenry County, Illinois. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. It is listed as a Level III trauma center. It does not currently have a CMS Overall Star Rating, which usually means it reports too few measures to be rated. It has 13 licensed beds, according to state license data via HIFLD. The nearest other listed hospital is Northwestern Medicine Woodstock Hospital, about 4.7 mi away.
The map pin is approximate (ZIP code center). Use the street address for directions.
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.
What patients say
- Would definitely recommend78%
- Rated the hospital 9 or 1079%
- Completed surveys88
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
42.23080, -88.33240
Nearby hospitals
- Northwestern Medicine Woodstock Hospital3701 Doty Road, Woodstock, IL · Level II traumaHospital4.7 mi
- Northwestern Medicine McHenry4201 Medical Center Drive, McHenry, IL · Emergency roomAcute care hospital6.7 mi
- Advocate Good Shepherd Hospital450 IL 22, Barrington, IL · Level II traumaHospital8.5 mi
- Advocate Good Shepherd Hospital450 West Highway 22, Barrington, IL · Emergency roomAcute care hospital11 mi
- Advocate Sherman Hospital1425 North Randall Road, Elgin, IL · Level II traumaAcute care hospital12 mi
- Saint Joseph Hospital-Elgin77 N Airlite Street, Elgin, IL · Level II traumaAcute care hospital13 mi
- Elgin Mental Health Center750 S State St, Elgin, IL · Emergency roomPsychiatric hospital15 mi
- St Alexius Medical Center1555 N Barrington Rd, Hoffman Estates, IL · Level II traumaAcute care hospital16 mi
- Alexian Brothers Behavioral Hlth Hosp1650 Moon Lake Blvd, Hoffman Estates, ILPsychiatric hospital16 mi
- Encompass Health Rehab Institute of Libertyville1201 American Way, Libertyville, ILRehabilitation hospital18 mi
Frequently asked questions
Where is Mercyhealth Hospital & Physician Clinic-Crystal La located?
Mercyhealth Hospital & Physician Clinic-Crystal La is at 875 S Route 31, Crystal Lake, IL 60014 in McHenry County.
Does Mercyhealth Hospital & Physician Clinic-Crystal La have an emergency room?
Yes. Mercyhealth Hospital & Physician Clinic-Crystal La reports emergency services to Medicare, and patients spent a median of 107 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Mercyhealth Hospital & Physician Clinic-Crystal La?
Mercyhealth Hospital & Physician Clinic-Crystal La does not have a current CMS Overall Star Rating. CMS only rates hospitals that report enough measures; critical access, psychiatric, VA and many small hospitals are often unrated, which says nothing about their quality.
Is Mercyhealth Hospital & Physician Clinic-Crystal La a trauma center?
Yes. It is listed as a Level III trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date January 2025). Trauma designations are renewed periodically, so confirm with the Illinois 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 Mercyhealth Hospital & Physician Clinic-Crystal La?
The main phone number on record with Medicare is (792) 220-5500.
Would patients recommend Mercyhealth Hospital & Physician Clinic-Crystal La?
In the most recent HCAHPS patient survey (88 completed surveys), 78% of patients said they would definitely recommend the hospital, and 79% rated it 9 or 10 out of 10.
Related guides
- 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.
- What Is a Trauma Center? Levels I to V ExplainedWhat each trauma center level provides, who designates and verifies them, pediatric trauma centers and how trauma systems route patients.
- What Is a Teaching Hospital?How residency training works, who is on the care team, the benefits and trade-offs for patients, and your rights at an academic medical center.
- How to Read a Hospital BillItemized bills, EOBs and billing codes explained, plus No Surprises Act protections and a step-by-step way to check for errors.