CMS certification 050771
Coast Plaza Hospital
13100 Studerbaker Road, Norwalk, CA 90650
Coast Plaza Hospital has a CMS overall rating of 1 out of 5 stars. 41% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. On all 8 death, complication, infection and readmission measures CMS could compare, it is no different from the national rate. Emergency patients spend a median of 2 h 37 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: 119 completed surveys, 9% 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 | CA | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 323 visits sampled · US median for EDs of the same volume: 2 h 3 min | 2 h 37 min | 2 h 54 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 21 visits sampled | 2 h 20 min | 4 h 20 min | 4 h 17 min |
| Left before being seen Lower is better · 9,300 patients | 3% | 2% | 2% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 60 patients | 42% | 70% | 65% |
How Coast Plaza 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 |
|---|---|---|---|---|
| Coast Plaza HospitalThis hospital | 1/5 | 41% | 2 h 37 min | No different |
| Adventist Health White Memorial MontebelloSame county · Montebello | 3/5 | — | — | 1 better 1 worse |
| Whittier Hospital Medical CenterSame county · Whittier | 4/5 | 60% | 1 h 43 min | 1 worse |
| Pih Health Hospital-WhittierSame county · Whittier | 4/5 | 79% | 3 h 57 min | 3 better 2 worse |
| Kaiser Foundation Hospital - South BaySame county · Harbor City | 3/5 | 71% | — | 1 better |
| UCI Health-LakewoodSame county · Lakewood | 2/5 | 48% | 3 h 42 min | 1 better 2 worse |
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. All hospitals in Norwalk.
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 432 cases | Too few cases | 4.8% | 3.9% |
| Heart failure 48 cases | Too few cases | 10.7% | 11.1% |
| Pneumonia 185 cases | Too few cases | 13.7% | 15.2% |
4 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 | 0.9 likely 0.46 – 1.34 | 1 |
| Pressure ulcers (bed sores) 1,080 cases | No different | 0.33 per 1,000 likely 0 per 1,000 – 1.29 per 1,000 | 0.63 per 1,000 |
| Collapsed lung caused by a procedure 1,210 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 1,201 cases | No different | 0.3 per 1,000 likely 0.09 per 1,000 – 0.52 per 1,000 | 0.27 per 1,000 |
| Bleeding or hematoma after surgery 76 cases | No different | 2.3 per 1,000 likely 0.58 per 1,000 – 4.03 per 1,000 | 2.34 per 1,000 |
| Blood clots in the lungs or legs after surgery 78 cases | No different | 3.34 per 1,000 likely 0.76 per 1,000 – 5.93 per 1,000 | 3.52 per 1,000 |
| Accidental cut or tear during abdominal surgery 147 cases | No different | 1.04 per 1,000 likely 0 per 1,000 – 2.12 per 1,000 | 1.06 per 1,000 |
6 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 |
|---|---|---|---|
| Bloodstream infections from central lines (CLABSI) | No different | 0 | 1 |
| Urinary tract infections from catheters (CAUTI) | No different | 0.58 likely 0.03 – 2.83 | 1 |
| C. diff intestinal infections | Better | 0.3 likely 0.1 – 0.72 | 1 |
3 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 123 cases | Too few cases | 21.8% | 21.3% |
| Readmitted after pneumonia 268 cases | Too few cases | 18.4% | 17.3% |
| Readmitted after COPD 43 cases | Too few cases | 19.4% | 20% |
| Days back in hospital after heart failure 63 cases | Too few cases | 19.2 days per 100 | — |
| Days back in hospital after pneumonia 201 cases | Too few cases | 21 days per 100 | — |
9 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 Coast Plaza Hospital
Is Coast Plaza Hospital a good hospital?
Coast Plaza Hospital has a CMS overall rating of 1 out of 5 stars. On all 8 death, complication, infection and readmission measures CMS could compare, it is no different from the national rate. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend Coast Plaza Hospital?
41% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 119 completed HCAHPS surveys.
How long is the wait in the Coast Plaza Hospital emergency room?
Emergency patients spend a median of 2 h 37 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. 3% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.