CMS certification 530015
St Johns Medical Center
po box 428, Jackson, WY 83001
St Johns Medical Center has a CMS overall rating of 5 out of 5 stars. 85% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. Of the 16 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 3 and worse on none. Emergency patients spend a median of 1 h 49 min in its emergency department before leaving (US median 2 h 42 min).
Every figure on this page is published by CMS; we arrange and explain it, and score nothing ourselves.
What patients said
Answers from patients who stayed here, collected by CMS in the national HCAHPS survey: 409 completed surveys, 29% response rate, Oct 2024 – Sep 2025.
Emergency department
How long emergency patients spent here and how some time-critical care went, from CMS's timely and effective care measures, Oct 2024 – Sep 2025. CMS classes this emergency department's patient volume as low; busier departments tend to have longer times, so the national median for departments of the same volume is shown too. These are medians over a year of visits, not a live wait time.
| Measure | This hospital | WY | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 390 visits sampled · US median for EDs of the same volume: 2 h 3 min | 1 h 49 min | 2 h 11 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 16 visits sampled | 2 h 12 min | 3 h 4 min | 4 h 17 min |
| Left before being seen Lower is better · 9,489 patients | 0% | 1% | 2% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 42 patients | 83% | 63% | 65% |
Deaths
How many patients died within 30 days of admission, adjusted by CMS for how sick they were. Lower is better. Data from Jul 2022 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| All patients, hospital-wide 526 cases | Too few cases | 3.7% | 3.9% |
| Heart failure 66 cases | Too few cases | 10% | 11.1% |
| Pneumonia 112 cases | Too few cases | 9.4% | 15.2% |
| COPD 53 cases | Too few cases | 7.7% | 8.6% |
3 more measures had too few cases here to report.
Complications
How often patients had serious complications, most of them after surgery, adjusted for how sick they were. Lower is better. Data from Jul 2022 – Jun 2024.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Serious complications, combined measure | No different | 1.2 likely 0.74 – 1.66 | 1 |
| After hip or knee replacement 60 cases | Too few cases | 4.1% | 4.1% |
| Pressure ulcers (bed sores) 810 cases | No different | 1.59 per 1,000 likely 0.43 per 1,000 – 2.75 per 1,000 | 0.63 per 1,000 |
| Collapsed lung caused by a procedure 1,323 cases | No different | 0.2 per 1,000 likely 0 per 1,000 – 0.43 per 1,000 | 0.21 per 1,000 |
| Broken bones from falls in the hospital 1,288 cases | No different | 0.26 per 1,000 likely 0.05 per 1,000 – 0.47 per 1,000 | 0.27 per 1,000 |
| Bleeding or hematoma after surgery 346 cases | No different | 2.18 per 1,000 likely 0.51 per 1,000 – 3.86 per 1,000 | 2.34 per 1,000 |
| Kidney injury needing dialysis after surgery 204 cases | No different | 1.63 per 1,000 likely 0 per 1,000 – 3.35 per 1,000 | 1.67 per 1,000 |
| Breathing failure after surgery 205 cases | No different | 7.68 per 1,000 likely 0 per 1,000 – 16.89 per 1,000 | 9.42 per 1,000 |
| Blood clots in the lungs or legs after surgery 358 cases | No different | 3.43 per 1,000 likely 0.99 per 1,000 – 5.87 per 1,000 | 3.52 per 1,000 |
| Sepsis after surgery 190 cases | No different | 4.68 per 1,000 likely 0.58 per 1,000 – 8.79 per 1,000 | 5.27 per 1,000 |
| Surgical wound splitting open 103 cases | No different | 1.73 per 1,000 likely 0.21 per 1,000 – 3.25 per 1,000 | 1.77 per 1,000 |
| Accidental cut or tear during abdominal surgery 207 cases | No different | 0.99 per 1,000 likely 0 per 1,000 – 2.05 per 1,000 | 1.06 per 1,000 |
1 more measure had too few cases here to report.
Infections caught in the hospital
Standardized infection ratio: 1.0 means as many infections as CMS predicted for a hospital like this one. Lower is better. Data from Oct 2024 – Sep 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| C. diff intestinal infections | No different | 0.34 likely 0.02 – 1.68 | 1 |
5 more measures had too few cases here to report.
Readmissions and return visits
How often patients had to come back to a hospital after going home. Lower is better. Data from Jul 2023 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Readmitted after heart failure 61 cases | Too few cases | 20.9% | 21.3% |
| Readmitted after pneumonia 90 cases | Too few cases | 16.5% | 17.3% |
| Readmitted after COPD 45 cases | Too few cases | 19.2% | 20% |
| Readmitted after hip or knee replacement 69 cases | Too few cases | 6.6% | 5.8% |
| Days back in hospital after heart failure 78 cases | Too few cases | -45.2 days per 100 | — |
| Days back in hospital after pneumonia 128 cases | Too few cases | -36.5 days per 100 | — |
| Unplanned visits after an outpatient colonoscopy 836 cases | No different | 12.4 per 1,000 likely 9.4 per 1,000 – 16.3 per 1,000 | 13 per 1,000 |
| Hospital admissions during outpatient chemotherapy 71 cases | No different | 11.5 per 100 likely 8 per 100 – 16.3 per 100 | 10.7 per 100 |
| ER visits during outpatient chemotherapy 71 cases | No different | 5.2 per 100 likely 3.3 per 100 – 7.9 per 100 | 5.4 per 100 |
| Unplanned visits after outpatient surgery 359 cases | No different | 1 likely 0.8 – 1.4 | — |
4 more measures had too few cases here to report.
How to read this page
- Everything here is published by CMS on Care Compare. We arrange it and explain it; the star ratings and the better / worse verdicts are CMS's, not ours.
- “No different” is the most common result on most measures at most hospitals. CMS only calls a result better or worse when the difference from the national rate is statistically clear.
- Death, complication and readmission rates are adjusted by CMS for how sick patients were, so hospitals that treat sicker patients can be compared fairly.
- Infection results are ratios: 1.0 means as many infections as CMS predicted for a hospital like this one, below 1.0 is fewer.
- These are hospital-wide results. They do not rate an individual doctor, nurse or department, and they are not medical advice.
CMS Care Compare data retrieved 4 Oct 2026, refreshed weekly. Where this data comes from and how we handle it · Report an error
Common questions about St Johns Medical Center
Is St Johns Medical Center a good hospital?
St Johns Medical Center has a CMS overall rating of 5 out of 5 stars. Of the 16 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 3 and worse on none. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend St Johns Medical Center?
85% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 409 completed HCAHPS surveys.
How long is the wait in the St Johns Medical Center emergency room?
Emergency patients spend a median of 1 h 49 min in its emergency department before leaving (US median 2 h 42 min). Among US emergency departments with low patient volume, like this one, the median is 2 h 3 min. 0% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.