- Time ZonePST
- CountyOrange
- Emergency CapableYes
- FIPS6059
- Area Code949
Quality and performance
Centers for Medicare & Medicaid Services · data as of July 2026
CMS has not reported an emergency department wait time for College Hospital Costa Mesa. That usually means too few cases to report, or no emergency department.
Source: CMS Hospital General Information and Timely & Effective Care. Wait times are a median over a past 12-month reporting period, not live data. Not affiliated with CMS or with College Hospital Costa Mesa. For a medical emergency, call 911.
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Infections, complications and deaths
Centers for Medicare & Medicaid Services · compared with hospitals nationwide
Of the 2 hospital-acquired infections CMS could compare, College Hospital Costa Mesa was better than the national benchmark on 1 and worse on 0.
Hospital-acquired infections
Death rates within 30 days
| Patients treated for | This hospital | U.S. |
|---|---|---|
| Hospital-wide, all conditions | 3.6% | 3.9% |
Risk-adjusted rates. CMS has not published a statistical better/worse comparison for these death rates in the current release, so small differences from the U.S. rate may be chance.
Other complications
None of the other safety indicators CMS compares was statistically better or worse than national.
All 3 complication measures
| Measure | This hospital | U.S. | CMS comparison |
|---|---|---|---|
| Pressure ulcers (bed sores)per 1,000 patients | 0.61 | 0.63 | Same as national |
| Falls in the hospital that caused a broken boneper 1,000 patients | 0.27 | 0.27 | Same as national |
| Collapsed lung caused by a medical procedureper 1,000 patients | 0.21 | 0.21 | Same as national |
"Better" or "worse" means CMS found the difference from the national benchmark statistically significant; most hospitals are "no different". Infection results compare the infections a hospital reported with the number predicted for a hospital of its size and type (a ratio below 1 means fewer than predicted), for Oct 2024 – Sep 2025. Death and complication rates are risk-adjusted for how sick patients were. Each death rate counts deaths within 30 days of a hospital stay, pooled over one to three years of Medicare patients depending on the measure. About the data.