Westchester Medical Center in Valhalla, NY
Also known as Grasslands Hospital
In a medical emergency, call 911. This page is for information only.
About Westchester Medical Center
Westchester Medical Center is an acute care hospital in Valhalla, Westchester County, New York. It reports its ownership to Medicare as nonprofit (other). It provides emergency services. It is listed as a Level I trauma center. Its CMS Overall Hospital Quality Star Rating is 2 out of 5. It has 652 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 Blythedale Children's Hospital, 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 infectionsNo different · SIR 0.66
- Catheter-associated urinary tract infections (CAUTI)Better than national · SIR 0.34
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.68
- Central line bloodstream infections (CLABSI)Better than national · SIR 0.47
- Surgical site infections after abdominal hysterectomyNo different · SIR 3.10
- Surgical site infections after colon surgeryNo different · SIR 0.30
67% 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 recommend60%
- Rated the hospital 9 or 1057%
- Completed surveys3,294
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
41.08590, -73.80345
Nearby hospitals
- Blythedale Children's Hospital95 Bradhurst Avenue, Valhalla, NYChildren's hospital0.8 mi
- Phelps Hospital701 North Broadway, Sleepy Hollow, NY · Emergency roomAcute care hospital3.2 mi
- White Plains Hospital CenterDavis Ave At E Post Road, White Plains, NY · Emergency roomAcute care hospital4.5 mi
- Burke Rehabilitation Hospital785 Mamaroneck Avenue, White Plains, NYRehabilitation hospital5.6 mi
- Saint John's Riverside Hospital - Dobbs Ferry Pavilion128 Ashford Avenue, Dobbs Ferry, NY · Emergency roomHospital5.8 mi
- Nyack Hospital160 North Midland Avenue, Nyack, NY · Level III traumaAcute care hospital6.4 mi
- Saint Vincent's Hospital Westchester275 North Street, Harrison, NYPsychiatric hospital8.3 mi
- Northern Westchester Hospital400 East Main Street, Mount Kisco, NY · Emergency roomAcute care hospital8.6 mi
- St John's Riverside Hospital976 North Broadway, Yonkers, NY · Emergency roomAcute care hospital9.2 mi
- Rockland Children's Psychiatric Center2 First Ave, Orangeburg, NY · Emergency roomPsychiatric hospital9.3 mi
Frequently asked questions
Where is Westchester Medical Center located?
Westchester Medical Center is at 100 Woods Rd, Valhalla, NY 10595 in Westchester County.
Does Westchester Medical Center have an emergency room?
Yes. Westchester Medical Center reports emergency services to Medicare, and patients spent a median of 235 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Westchester Medical Center?
Westchester Medical Center has a CMS Overall Hospital Quality Star Rating of 2 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 Westchester 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 April 2024). Trauma designations are renewed periodically, so confirm with the New York 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 Westchester Medical Center?
The main phone number on record with Medicare is (914) 493-7000.
Would patients recommend Westchester Medical Center?
In the most recent HCAHPS patient survey (3,294 completed surveys), 60% of patients said they would definitely recommend the hospital, and 57% 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.