Advocate Illinois Masonic Medical Center in Chicago, IL
Also known as Advocate Illinois Masonic Hospital
In a medical emergency, call 911. This page is for information only.
About Advocate Illinois Masonic Medical Center
Advocate Illinois Masonic Medical Center is an acute care hospital in Chicago, Cook County, Illinois. 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 3 out of 5. It has 326 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 Presence Saint Joseph Hospital - Chicago, about 1.0 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 0.25
- Catheter-associated urinary tract infections (CAUTI)No different · SIR 0.40
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.43
- Central line bloodstream infections (CLABSI)No different · SIR 1.14
- Surgical site infections after abdominal hysterectomyNo different · SIR 0.00
- Surgical site infections after colon surgeryNo different · SIR 0.90
84% 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 recommend70%
- Rated the hospital 9 or 1068%
- Completed surveys1,107
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
41.93636, -87.65220
Nearby hospitals
- Presence Saint Joseph Hospital - Chicago2900 North Lake Shore Drive, Chicago, IL · Emergency roomAcute care hospital1.0 mi
- Thorek Memorial Hospital850 W Irving Park Rd, Chicago, IL · Emergency roomAcute care hospital1.3 mi
- Louis A Weiss Memorial Hospital4646 N Marine Drive, Chicago, IL · Emergency roomAcute care hospital2.1 mi
- Montrose Behavioral Health Hospital4720 N Clarendon Avenue, Chicago, IL · Emergency roomPsychiatric hospital2.2 mi
- Methodist Hospital of Chicago5025 N Paulina Street, Chicago, IL · Emergency roomAcute care hospital2.7 mi
- Kindred Hospital Chicago (North Campus)2544 West Montrose Avenue, Chicago, ILHospital2.7 mi
- Presence Saints Mary and Elizabeth Medical Center2233 W Division St, Chicago, IL · Emergency roomAcute care hospital2.8 mi
- Ann & Robert H Lurie Childrens Hospital of Chicago225 E Chicago Ave, Box 140, Chicago, IL · Emergency roomChildren's hospital3.1 mi
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL · Level I traumaAcute care hospital3.3 mi
- Shirley Ryan Abilitylab355 E Erie St, Chicago, ILRehabilitation hospital3.4 mi
Frequently asked questions
Where is Advocate Illinois Masonic Medical Center located?
Advocate Illinois Masonic Medical Center is at 836 West Wellington Avenue, Chicago, IL 60657 in Cook County.
Does Advocate Illinois Masonic Medical Center have an emergency room?
Yes. Advocate Illinois Masonic Medical Center reports emergency services to Medicare, and patients spent a median of 237 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Advocate Illinois Masonic Medical Center?
Advocate Illinois Masonic Medical Center has a CMS Overall Hospital Quality Star Rating of 3 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 Advocate Illinois Masonic Medical Center 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 December 2023). 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 Advocate Illinois Masonic Medical Center?
The main phone number on record with Medicare is (773) 975-1600.
Would patients recommend Advocate Illinois Masonic Medical Center?
In the most recent HCAHPS patient survey (1,107 completed surveys), 70% of patients said they would definitely recommend the hospital, and 68% 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.
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