zReports Research Institute · Updated September 2026
Every hospital in Simi Valley, CA, independently graded A to F from CMS Hospital Compare general information and quality data: 0 hold an A range grade, 1 grade below B. Simi Valley's average score is 64, 15.2 below the California average. The grades are free.
| # | Facility | Grade | |
|---|---|---|---|
| 1 | Adventist Health Simi Valley | C | View record |
| Statistic | Value |
|---|---|
| Active licensed hospitals | 1 |
| Simi Valley average records layer score | 64 |
| California statewide average | 79.2 (Simi Valley -15.2) |
| A range grades | 0 (0%) |
| Graded below B | 1 |
| Clean record (no deficiencies on file) | 1 (100%) |
| Serious findings on the record | 0 |
Simi Valley's 1 licensed hospitals average a records layer score of 64, 15.2 points below the California statewide average of 79.2. 1 of 1 facilities carry a clean record with no deficiencies on the state's file. See the full picture on the California Hospital Rankings & Safety Report.
Hospitals in California are overseen by the state's licensing authority, whose certification, inspection, and quality-reporting data is published on the public record. This page is computed from CMS Hospital Compare general information and quality data, the government’s own filings, not reviews or advertising.
Simi Valley has 1 active licensed hospitals on California's public file. Every one is ranked on this page with a free records layer grade.
Simi Valley's average records layer score is 64, 15.2 points below the statewide average of 79.2. 1 of 1 Simi Valley facilities have a clean record with no deficiencies on file.
The free records layer grade contains zero zReports judgment: it maps the government's own published verdicts, CMS Hospital Compare general information and quality data, through one fixed rule applied identically nationwide. The paid Consumer Intelligence Report™ adds the composite Consumer Z Score™ and audits the record against public reputation.
No. Facilities are never contacted, never notified, and cannot pay to be listed, delisted, or re-scored. Independence is the product.
This report was generated from the zReports Consumer Records Database™, a continuously updated database that normalizes official government licensing, inspection, enforcement, ownership, and safety records across multiple federal and state agencies. Every statistic in this report is traceable to its originating public record. Facilities cannot pay to alter scores, rankings, or findings.
Data source: zReports Consumer Intelligence Database™ v2026.09 · Built from: CMS Provider Data Catalog · HHS OIG Exclusions List (LEIE) · Public consumer review signals (audited, never trusted, in the composite Consumer Z Score™) · Proprietary Consumer Z Score™ methodology · Updated: September 2026
APA, zReports Research Institute. (2026). Best Hospitals in Simi Valley, CA. Rankings & Safety Records (v2026.09). zReports.org. https://zreports.org/rankings/hospital/ca/simi-valley
MLA, zReports Research Institute. “Best Hospitals in Simi Valley, CA. Rankings & Safety Records.” zReports.org, v2026.09, September 2026, zreports.org/rankings/hospital/ca/simi-valley.
Plain, Best Hospitals in Simi Valley, CA. Rankings & Safety Records, zReports Research Institute, v2026.09, updated September 2026, zreports.org/rankings/hospital/ca/simi-valley
RANKED NIGHTLY FROM CMS HOSPITAL COMPARE GENERAL INFORMATION AND QUALITY DATA · FACILITIES ARE NEVER CONTACTED AND CANNOT PAY TO CHANGE SCORES · METHODOLOGY