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California Outpatient Surgery Center Rankings & Safety Report

zReports Research Institute · Updated October 2026

Bythe zReports Healthcare Research Team · zReports Research Institute Data sourcezReports Consumer Intelligence Database™ v2026.10 Facilities analyzed939 Government sourcesthe Centers for Medicare & Medicaid Services (CMS) Last updatedOctober 2026 MethodologyConsumer Z Score™ · Database v2026.10

California has 939 active licensed surgery centers on the state's public file. zReports analyzed CMS Ambulatory Surgical Center Quality Reporting data to produce a records layer grade for every one, the government's own verdicts, mapped through one fixed rule. No facility can pay to change a score, and the grade is free.

Key findings

939active licensed surgery centers across 225 California cities appear on the state's public file.
100%hold an A or B records layer grade.
85is the statewide average records layer score across all graded surgery centers.
Fresnois the highest-scoring larger city (22 facilities, average score 85).
Beverly Hillshas the most licensed surgery centers in the state (47).

Key statistics

StatisticValue
Active licensed surgery centers939
Cities covered225
Statewide average records layer score85
Grade A facilities939 (100%)
Facilities with a clean record (no deficiencies on file)939 (100%)
Serious (high severity) findings on the record0
Moderate findings on the record0

How cities compare

Average records layer score by city (cities with 10+ facilities), against the statewide average of 85.

CityFacilitiesAvg scorevs state
Fresno2285+0
San Diego2285+0
Torrance2885+0
Beverly Hills4785+0
Sacramento1185+0
Los Angeles3685+0
San Jose1585+0
Riverside1385+0
San Francisco1285+0

By city

Beverly Hills (47)Los Angeles (36)Torrance (28)Fresno (22)San Diego (22)Bakersfield (22)Encino (18)Newport Beach (17)Thousand Oaks (16)San Jose (15)Pasadena (15)Santa Monica (14)Riverside (13)Glendale (12)San Francisco (12)Sacramento (11)Santa Barbara (11)Murrieta (11)Irvine (11)Long Beach (10)Walnut Creek (10)Santa Rosa (9)Modesto (9)Orange (9)Stockton (8)Mission Viejo (8)Fremont (8)Lancaster (8)Visalia (8)Northridge (8)Rancho Mirage (8)Santa Maria (7)Redding (7)Sherman Oaks (7)West Hills (7)Oakland (7)Anaheim (7)Valencia (7)Arcadia (6)Laguna Hills (6)Hemet (6)Colton (6)Tarzana (6)San Luis Obispo (6)Fountain Valley (6)Palm Desert (6)Templeton (6)Chico (6)Camarillo (6)Corona (6)Monterey (5)Redlands (5)Burbank (5)Oxnard (5)Napa (5)Upland (5)Salinas (5)Mountain View (5)Roseville (5)Santa Ana (5)Temecula (5)Palmdale (5)Encinitas (4)Chula Vista (4)Los Gatos (4)Escondido (4)Monterey Park (4)Ventura (4)Oceanside (4)Apple Valley (4)La Jolla (4)Laguna Beach (4)Merced (4)Downey (4)Fullerton (4)Westminster (4)Campbell (4)Folsom (4)San Ramon (4)Turlock (4)Van Nuys (3)La Mesa (3)Palo Alto (3)Simi Valley (3)Victorville (3)Hanford (3)Palm Springs (3)Arroyo Grande (3)Burlingame (3)Ridgecrest (3)Whittier (3)Foothill Ranch (3)Greenbrae (3)Grass Valley (3)Los Altos (3)Alhambra (3)Costa Mesa (3)Danville (3)Westlake Village (3)Huntington Beach (3)Carlsbad (3)Loma Linda (3)Covina (3)Marina Del Rey (3)Chino (3)West Covina (2)Ontario (2)Garden Grove (2)Daly City (2)San Rafael (2)Yuba City (2)San Mateo (2)Freedom (2)San Clemente (2)Cerritos (2)San Bernardino (2)Novato (2)Los Alamitos (2)San Carlos (2)Montebello (2)Castro Valley (2)Glendora (2)Pinole (2)Pomona (2)Santa Clarita (2)Reseda (2)Redwood City (2)Vacaville (2)Pleasanton (2)Culver City (2)Manhattan Beach (2)Tustin (2)Mission Hills (2)Rialto (2)El Cajon (2)Agoura Hills (2)Aliso Viejo (2)Citrus Heights (2)Calabasas (2)Clovis (2)Santa Cruz (1)Hayward (1)Vista (1)Lodi (1)Antioch (1)San Leandro (1)Auburn (1)San Juan Capistrano (1)Madera (1)El Centro (1)Rowland Heights (1)Delano (1)Studio City (1)Atwater (1)Emeryville (1)Sun Valley (1)Placerville (1)Poway (1)Rancho Cucamonga (1)Concord (1)Truckee (1)Atherton (1)Pismo Beach (1)Inglewood (1)Fairfield (1)San Gabriel (1)Duarte (1)Santa Clara (1)Redondo Beach (1)Porterville (1)Indio (1)Salida (1)Brentwood (1)Azusa (1)Kelseyville (1)South Gate (1)Windsor (1)Venice (1)Tracy (1)Beaumont (1)Eureka (1)Milpitas (1)Corona Del Mar (1)Benicia (1)Tulare (1)City Of Industry (1)Elk Grove (1)Capitola (1)Rancho Cordova (1)Century City (1)Hermosa Beach (1)Chino Hills (1)Seal Beach (1)Atascadero (1)San Marcos (1)San Pedro (1)Rolling Hills Estate (1)Paramount (1)Wildomar (1)Cathedral City (1)El Dorado Hills (1)Foster City (1)Woodland Hills (1)Hawthorne (1)Playa Vista (1)Imperial (1)Lynwood (1)Sonora (1)El Cerrito (1)Sebastopol (1)Rocklin (1)Buena Park (1)Manteca (1)El Segundo (1)North Hollywood (1)Bellflower (1)Lakewood (1)Bell Gardens (1)Lake Forest (1)Newhall (1)Lompoc (1)South San Francisco (1)La Quinta (1)Huntington Park (1)Berkeley (1)

Statewide top 25

#1 Santa Cruz Surgery Center Santa Cruz · A-

#2 Optima Ophthalmic Medical Asso Hayward · A-

#3 Arcadia Outpatient Surgery Ctr Arcadia · A-

#4 San Gabriel Valley Surgical Ct West Covina · A-

#5 Valley Medical Plaza Ambulatory Surgical Center Fresno · A-

#6 Pacific Hills Surgery Center, LLC Laguna Hills · A-

#7 Grace Surgery Center Santa Maria · A-

#8 San Diego Eye Cor San Diego · A-

#9 San Diego Outpatient Surgical Center San Diego · A-

#10 Surgery Center Of South Bay Torrance · A-

#11 Thomas Mazzocco Ambulatory Surgical Center Van Nuys · A-

#12 Santa Rosa Surgery And Endoscopy Center Santa Rosa · A-

#13 Vision Care Surgery Center Fresno · A-

#14 Eye Surgery Center Of Southern California, INC Vista · A-

#15 Ontario Advanced Surgery Center Ontario · A-

#16 Monterey Peninsula Surgery Center Monterey · A-

#17 Ucsd Center For Surgery Of Encinitas Encinitas · A-

#18 90210 Surgery Medical Center, LLC Beverly Hills · A-

#19 Greater Sacramento Surgery Center Sacramento · A-

#20 Endoscopy Center Of Chula Vista Chula Vista · A-

#21 Los Gatos Surgical Center Los Gatos · A-

#22 Lodi Outpatient Surgical Center Lodi · A-

#23 Beverly Hills Regional Surgery Center Los Angeles · A-

#24 Orange County Eye Surgical Center Garden Grove · A-

#25 Forest Surgery Center San Jose · A-

Don't see a name? Search it. Every surgery center has an answer.

Methodology

The free grade on this page contains zero zReports judgment: it maps the state's own published licensing and enforcement verdicts through one fixed rule, applied identically to every surgery center in America. Where the record and public reputation diverge, a highly reviewed facility with serious findings on file, the paid Consumer Intelligence Report™ surfaces it through the composite Consumer Z Score™ and our published ten point methodology. Facilities are never contacted and cannot pay to change a score. Read the full methodology →

About surgery center licensing in California

Outpatient Surgery Centers in California are overseen by the Centers for Medicare & Medicaid Services (CMS), whose certification, inspection, and quality-reporting data is published on the public record. This page is computed from CMS Ambulatory Surgical Center Quality Reporting data, the government’s own filings, not reviews or advertising.

Frequently asked questions

How many surgery centers are there in California?

California has 939 active licensed surgery centers on the state's public file, across 225 cities. Every one has a free records layer grade on zReports.

Which California city has the most surgery centers?

Beverly Hills, with 47 licensed surgery centers, followed by Los Angeles (36) and Torrance (28).

How are California surgery center grades calculated?

The free records layer grade contains zero zReports judgment. It maps the government's own published verdicts, CMS Ambulatory Surgical Center Quality Reporting data, through one fixed rule, applied identically to every surgery center in the country. The paid Consumer Intelligence Report™ adds the composite Consumer Z Score™, which audits the record against public reputation through our published ten point methodology.

Why can a facility with 5-star reviews have a low grade?

Reviews and records are different surfaces. Reviews reflect what visitors chose to write, and can be managed by the business. Inspection and enforcement records are filed by the state, are mandatory, and cannot be edited by the facility. When the two diverge, the record is the surface worth checking. That divergence is exactly what zReports was built to surface.

How often are these rankings updated?

Rankings refresh whenever California republishes its licensing data; facility pages carry the records-verified date for each provider. This page was generated from the current file as of October 2026.

Can a facility pay to change its score?

No. Facilities are never contacted, never notified, and cannot pay to be listed, delisted, or re-scored. zReports has no business relationship with any facility it grades, independence is the product.

Data Provenance

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™ v2026.10 · 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: October 2026

Cite this report

APA, zReports Research Institute. (2026). California Outpatient Surgery Center Rankings & Safety Report (v2026.10). zReports.org. https://zreports.org/rankings/asc/ca

MLA, zReports Research Institute. “California Outpatient Surgery Center Rankings & Safety Report.” zReports.org, v2026.10, October 2026, zreports.org/rankings/asc/ca.

Plain, California Outpatient Surgery Center Rankings & Safety Report, zReports Research Institute, v2026.10, updated October 2026, zreports.org/rankings/asc/ca

Related research

Outpatient Surgery Centers in all states → Beverly Hills rankings →Los Angeles rankings →Torrance rankings → zReports Data Blog → How the Consumer Z Score™ works →