CMS certification 501312
Prosser Memorial Hospital
723 Memorial Street, Prosser, WA 99350
Prosser Memorial Hospital has a CMS overall rating of 3 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 10 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 1 and worse on none. Emergency patients spend a median of 1 h 52 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: 269 completed surveys, 17% 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 medium; 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 | WA | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 826 visits sampled · US median for EDs of the same volume: 2 h 45 min | 1 h 52 min | 2 h 31 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 13 visits sampled | 2 h 2 min | 3 h 58 min | 4 h 17 min |
| Left before being seen Lower is better · 21,579 patients | 2% | 3% | 2% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 41 patients | 76% | 60% | 65% |
How Prosser Memorial Hospital compares with nearby hospitals
The closest hospitals of the same kind that CMS rates or surveys - the same city first, then the same county and ZIP area. Every figure is CMS's: the overall star rating, the share of patients who would definitely recommend the hospital, the median time emergency patients spent before leaving, and how many death, complication, infection and readmission measures CMS found better or worse than the national rate.
| Hospital | CMS stars | Would recommend | ER median time | Vs the nation |
|---|---|---|---|---|
| Prosser Memorial HospitalThis hospital | 3/5 | 85% | 1 h 52 min | 1 better |
| Kadlec Regional Medical CenterSame county · Richland | 4/5 | 74% | 2 h 47 min | 4 better 2 worse |
| Trios HealthSame county · Kennewick | 2/5 | 64% | 2 h 47 min | 3 worse |
| Othello Community HospitalSame ZIP area · Othello | Not rated | 64% | — | — |
| Providence St Mary Medical CenterSame ZIP area · Walla Walla | 3/5 | 68% | 2 h 14 min | 3 better |
| Lourdes Medical CenterSame ZIP area · Pasco | 3/5 | 67% | 1 h 57 min | 1 better |
Hospitals differ in size and in how sick their patients are. CMS adjusts its outcome measures for that, but a star or a percentage is a starting point for questions, not a verdict.
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 352 cases | Too few cases | 3.7% | 3.9% |
| Heart failure 35 cases | Too few cases | 12.4% | 11.1% |
| Pneumonia 58 cases | Too few cases | 18.9% | 15.2% |
| Stroke 39 cases | Too few cases | 12.6% | 11.9% |
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 |
|---|---|---|---|
| After hip or knee replacement 33 cases | Too few cases | 3.6% | 4.1% |
12 more measures 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 | 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 52 cases | Too few cases | 21.4% | 21.3% |
| Readmitted after pneumonia 80 cases | Too few cases | 17.7% | 17.3% |
| Readmitted after hip or knee replacement 37 cases | Too few cases | 5.3% | 5.8% |
| Days back in hospital after heart failure 51 cases | Too few cases | 38.4 days per 100 | — |
| Days back in hospital after pneumonia 58 cases | Too few cases | -16.7 days per 100 | — |
9 more measures had too few cases here to report.
Clinicians registered at this address
28 clinicians give this hospital's street address as their practice location in NPPES, the federal provider registry. The same address can take in offices and clinics in the building, and a listing does not prove admitting privileges or current employment.
| Specialty | Clinicians |
|---|---|
| Physical Therapist | 5 |
| Nurse Anesthetist, Certified Registered | 4 |
| Emergency Medicine | 3 |
| Occupational Therapy Assistant | 3 |
| Family Medicine | 2 |
| Physical Therapy Assistant | 2 |
| Speech-Language Pathologist | 2 |
| Cardiovascular Disease | 1 |
| Dietitian, Registered | 1 |
| Occupational Therapist | 1 |
| Physician Assistant | 1 |
| Registered Nurse First Assistant | 1 |
First 12 alphabetically
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 Prosser Memorial Hospital
Is Prosser Memorial Hospital a good hospital?
Prosser Memorial Hospital has a CMS overall rating of 3 out of 5 stars. Of the 10 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 1 and worse on none. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend Prosser Memorial Hospital?
85% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 269 completed HCAHPS surveys.
How long is the wait in the Prosser Memorial Hospital emergency room?
Emergency patients spend a median of 1 h 52 min in its emergency department before leaving (US median 2 h 42 min). Among US emergency departments with medium patient volume, like this one, the median is 2 h 45 min. 2% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.