Clara Maass Medical Center in Belleville, NJ
In a medical emergency, call 911. This page is for information only.
About Clara Maass Medical Center
Clara Maass Medical Center is an acute care hospital in Belleville, Essex County, New Jersey. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. Its CMS Overall Hospital Quality Star Rating is 3 out of 5. It has 472 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 Silver Lake Hospital Ltach, about 1.1 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 0.99
- Catheter-associated urinary tract infections (CAUTI)No different · SIR 0.00
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.16
- Central line bloodstream infections (CLABSI)No different · SIR 0.00
- Surgical site infections after colon surgeryNo different · SIR 0.00
79% 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 recommend64%
- Rated the hospital 9 or 1063%
- Completed surveys675
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
40.78558, -74.17488
Nearby hospitals
- Silver Lake Hospital Ltach495 North 13th Street, Newark, NJLong-term care hospital1.1 mi
- Hackensack Meridian Mountainside Medical1 Bay Avenue, Montclair, NJ · Emergency roomAcute care hospital2.4 mi
- Saint Michael's Medical Center111 Central Avenue, Newark, NJ · Emergency roomAcute care hospital2.9 mi
- Carewell Health Medical Center300 Central Ave, East Orange, NJ · Emergency roomAcute care hospital3.0 mi
- The University Hospital150 Bergen St, Newark, NJ · Level I traumaAcute care hospital3.2 mi
- VA New Jersey Health Care System385 Tremont Avenue, East Orange, NJ · Emergency roomVA medical center4.0 mi
- Kessler Rehab Center1199 Pleasant Valley Way, West Orange, NJRehabilitation hospital5.2 mi
- St Mary's General Hospital350 Boulevard, Passaic, NJ · Emergency roomAcute care hospital5.4 mi
- Hudson Regional Hospital55 Meadowlands Pkwy, Secaucus, NJ · Emergency roomAcute care hospital5.5 mi
- Essex County Hospital Center204 Grove Avenue, Cedar Grove, NJPsychiatric hospital5.5 mi
Frequently asked questions
Where is Clara Maass Medical Center located?
Clara Maass Medical Center is at One Clara Maass Drive, Belleville, NJ 07109 in Essex County.
Does Clara Maass Medical Center have an emergency room?
Yes. Clara Maass Medical Center reports emergency services to Medicare, and patients spent a median of 142 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Clara Maass Medical Center?
Clara Maass 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 Clara Maass Medical Center a trauma center?
We have no trauma center designation on record for Clara Maass Medical Center. Hospitals without one still treat injuries in their emergency department and transfer patients who need a trauma center. Check the New Jersey trauma program for the current list.
What is the phone number of Clara Maass Medical Center?
The main phone number on record with Medicare is (973) 450-2000.
Would patients recommend Clara Maass Medical Center?
In the most recent HCAHPS patient survey (675 completed surveys), 64% of patients said they would definitely recommend the hospital, and 63% rated it 9 or 10 out of 10.
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