St Johns Medical Center in Jackson, WY
In a medical emergency, call 911. This page is for information only.
About St Johns Medical Center
St Johns Medical Center is an acute care hospital in Jackson, Teton County, Wyoming. It reports its ownership to Medicare as public (hospital district or authority). It provides emergency services. It is listed as a Area Trauma Hospital under its state trauma system. Its CMS Overall Hospital Quality Star Rating is 5 out of 5. It has 78 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 Teton Valley Hospital, about 25 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
- Clostridioides difficile (C. diff) infectionsNo different · SIR 0.34
83% 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 recommend85%
- Rated the hospital 9 or 1084%
- Completed surveys409
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
43.48078, -110.75062
Nearby hospitals
Frequently asked questions
Where is St Johns Medical Center located?
St Johns Medical Center is at po box 428, Jackson, WY 83001 in Teton County.
Does St Johns Medical Center have an emergency room?
Yes. St Johns Medical Center reports emergency services to Medicare, and patients spent a median of 109 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of St Johns Medical Center?
St Johns Medical Center 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 St Johns Medical Center a trauma center?
Yes. It is listed as a Area Trauma Hospital (state designation) 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 Wyoming 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 St Johns Medical Center?
The main phone number on record with Medicare is (307) 733-3636.
Would patients recommend St Johns Medical Center?
In the most recent HCAHPS patient survey (409 completed surveys), 85% of patients said they would definitely recommend the hospital, and 84% 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 Get Inpatient Mental Health CareWays to be admitted, voluntary and involuntary care, what a stay looks like, and how insurance, Medicare and Medicaid cover it.
- 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.