Ambulatory surgical centers and clinics, freestanding · California

Prime MSO LLC

Glendale, CA · ~74 workers · 2 years of OSHA Injury Tracking Application data.

B
Good Safety Record
3.0
Avg TCR
3.8
Industry avg
0
Fatalities
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The verdict

Prime MSO LLC runs at 80% of its industry's injury rate - safer than the typical Ambulatory surgical centers and clinics, freestanding workplace, earning a grade B.

Prime MSO LLC: 3.0 TCR = 80% of Ambulatory surgical centers and clinics, freestanding BLS 3.8 · 2y Form 300A (see methodology below)

Prime MSO LLC safety composite

Prime MSO LLC scores strongest on total case rate (tcr) (safer than 78% of same-industry peers) and weakest on fatalities (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

68/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 3.03 per 100 workers

Safer than 78% of industry peers

DART rate
C 0 per 100 workers

Safer than 70% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−6.1

2017→2023

Prime MSO LLC injury rate improved

Prime MSO LLC's TCR fell 6.1 from 6.1 in 2017 to 0.0 in 2023. Peak filing year was 2017 at 6.1 TCR. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

2017=6.1 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 621493 · Glendale, CA AT/BELOW-IND · SMALL

Grade B · TCR 3.0 · 80% of ind

  • DART 0.0 DART
  • RANK #9/36
  • PHOTO Huntington Ambulator…
  • BOOK 2y book
  • INJ 6 inj
  • SIZE ~74 FTE

Nearest TCR peer: Huntington Ambulatory Surgery Center (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Prime MSO LLC in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Prime MSO LLC averages 3.0 TCR (80% of the Ambulatory surgical centers and clinics, freestanding BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Prime MSO LLC TCR series: 2017=6.1 · 2023=0 · BLS 3.8

Where Prime MSO LLC falls in its industry

498 Ambulatory surgical centers an establishments

Safer than 78% of graded establishments in this industry, whose median TCR is 6.2.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #9 safest of 36 Ambulatory surgical centers an employers in California.

Prime MSO LLC (74 employees, TCR 3.0) among 29 same-industry peers, split at the industry median of 47 employees and a TCR of 6.2 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 0200400600800 0510152025 Average employees Total Case Rate Prime MSO LLC
Prime MSO LLC (74 employees, TCR 3.0) among 29 same-industry peers, split at the industry median of 47 employees and a TCR of 6.2

Prime MSO LLC has more employees than the Ambulatory surgical centers and clinics, median and a lower injury rate than the industry's median TCR of 6.2. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2023 0.0 0.0 0 0 0
2017 6.1 1.0 6 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

621493 · CA · Glendale

498 Ambulatory surgical centers and clinics, freestanding employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 148 employers in Glendale, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Huntington Ambulatory Surgery Center 3.0 TCR
NAICS-TCR Eastside Endoscopy Center 3.0 TCR
NAICS-TCR Collom & Carney Clinic-Main 3.0 TCR
NAICS-TCR Pueblo West Emergency Depsrtment 3.0 TCR
STATE-SIZE Wonderful Orchards-New Columbia 74 FTE
STATE-SIZE Apricot Lane Farms 74 FTE
STATE-SIZE Central California Almond Growers (Kerman) 74 FTE
STATE-SIZE Jose Jesus Garcia Jr 74 FTE
CITY-NEAR California Department of Transportation Facility 604 2,621 FTE
CITY-NEAR California Department of Transportation Facility 615 2,621 FTE
CITY-NEAR 9292-AHGL001 - HOSPITAL 2,177 FTE
CITY-NEAR VER Technologies, LLC 1,692 FTE
NAT-TCR Hampton Inn & Suites Bartram Park 3.0 TCR
NAT-TCR Brannan Paving Co Ltd 3.0 TCR
NAT-TCR Kawneer Company, Inc. 3.0 TCR
NAT-TCR Talbot Brothers Contracting Co. Inc. 3.0 TCR
NAT-SIZE 6501 Jackson W Hesselbein tire Co Inc 74 FTE
NAT-SIZE UMCasaBlanca954 74 FTE
NAT-SIZE Cherokee Station-105 74 FTE
NAT-SIZE Tolk Station-124 74 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2023, 2017. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.