NAICS 621111 · California overview
Physician Practices in Sonoma County
Sonoma County had 245 Medical Practice establishments in 2023, ranking 23 of 54 California counties and accounting for 0.8% of the statewide total.
- Establishments (2023)
- 245
- Rank 23 of 54 counties
- Employees
- 2,693
- Mid-March employment
- Annual payroll
- $334M
- All establishments
- Per 10k residents
- 5.0
- 486,444 residents
More recent reading
BLS QCEW, 2026Q1The figures above are County Business Patterns, which carries the size distribution but runs about two years behind. The Bureau of Labor Statistics publishes quarterly, so this is the same industry roughly 3 years later. The two count different universes, Census counts establishments with paid employees in the March pay period and BLS counts worksites covered by unemployment insurance during the quarter, so the numbers are not directly comparable and either can be the larger.
- Establishments
- 235
- 2026Q1
- Employment
- 2,186
- Quarter-end level
- Average weekly wage
- $2,870
- Per covered worker
- Quarterly trend
- +2.6%
- 2025Q2 to 2026Q1
0.57 location quotient. Medical Practice employment in Sonoma County is about 1.8 times less concentrated than in the United States as a whole.
Computed by the Bureau of Labor Statistics, not derived here. Above 1.0 means the industry is a larger share of local employment than of national employment.
Establishments by size
Employee-count distribution for Medical Practice in Sonoma County. 46 of 245 establishments (19%) employ 10 or more people, the practical floor for most acquisition financing.
| Employees | Establishments | Share | Distribution |
|---|---|---|---|
| 1-4 | 154 | 62.9% | |
| 5-9 | 44 | 18.0% | |
| 10-19 | 19 | 7.8% | |
| 20-49 | 17 | 6.9% | |
| 50-99 | 6 | 2.4% | |
| 100-249 | 4 | 1.6% |
Establishment trend
Year-over-year establishment counts, County Business Patterns. Net growth of 6.1% since 2020.
| Year | Establishments | Change |
|---|---|---|
| 2020 | 231 | n/a |
| 2021 | 255 | +24 |
| 2022 | 262 | +7 |
| 2023 | 245 | -17 |
How this market compares
Sonoma County against every other county in California on the same measure. The median excludes places under 2,000 residents, where per-capita figures are arithmetically true but analytically useless.
Close to the state median for this industry. Provision is roughly what the population would predict.
- Vs state median
- -7%
- Businesses per resident
- Rank by count
- #23
- of 54 counties
- Rank by density
- #31
- of 54 ranked
- Since 2020
- +6%
- Change in establishments
Density compares physician practices provision per resident. It does not measure revenue, profitability or whether a market is worth entering.
Business size mix
Sonoma tracks the California size distribution closely.
| Share of establishments | Sonoma | California | Difference |
|---|---|---|---|
| Under 5 employeesOwner-operated, often no management layer | 62.9% | 66.9% | -4.0% |
| 5 to 49 employeesThe range most individual buyers target | 32.7% | 31.0% | +1.7% |
| 10 or more employeesPractical floor for acquisition financing | 18.8% | 16.6% | +2.1% |
What acquirers look at
California’s corporate practice of medicine doctrine restricts lay ownership, so deals are structured as MSO arrangements. Not a first acquisition for an unlicensed buyer.
Cities in Sonoma
The figures above cover the county as a whole. These are the places within it.
Other industries in Sonoma
Sources
- U.S. Census Bureau, 2023 County Business Patterns. Establishment counts, employment and annual payroll by NAICS. Retrieved 2026-09-08.
- U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (2026Q1). Quarterly establishment counts and employment for employers covered by unemployment insurance. Retrieved 2026-09-08.