NAICS 621111
Physician Practices in Larkspur, CA
The 1 ZIP codes assigned to Larkspur contained 11 Medical Practice establishments in 2023, of which 8 employed 10 or more people.
- Establishments (2023)
- 11
- 1 ZIP codes
- 10 or more employees
- 8
- Practical financing floor
- Share of county
- 4%
- Marin County
- City population
- 12,620
- 2025 estimate
Figures cover the ZIP codes the U.S. Postal Service assigns to Larkspur (94939). ZIP areas are not municipal boundaries: they can extend beyond city limits and are shared between neighbouring places. This is a count of establishments in Larkspur's ZIP codes, not a count of businesses inside its city limits.
Establishments by size
Employee-count distribution. For most buyers the businesses worth pursuing sit in the 5 to 49 range: large enough to have a manager and real systems, small enough to be owner-operated.
| Employees | Establishments | Share | Distribution |
|---|---|---|---|
| 10-19 | 3 | 27.3% | |
| 20-49 | 5 | 45.5% |
Business size mix
Larkspur is more consolidated than California as a whole: fewer micro-operators and a larger share of businesses with real headcount. Fewer targets, but the ones that exist are more likely to be financeable.
| Share of establishments | Larkspur | California | Difference |
|---|---|---|---|
| Under 5 employeesOwner-operated, often no management layer | 0.0% | 65.6% | -65.6% |
| 5 to 49 employeesThe range most individual buyers target | 72.7% | 27.4% | +45.3% |
| 10 or more employeesPractical floor for acquisition financing | 72.7% | 12.9% | +59.9% |
Nearest comparable markets
The closest places to Larkspur that also have Medical Practice establishments on record. Useful for spotting a gap next door, or realising the market you are looking at is already served from the town over.
| Market | Establishments | Vs state share |
|---|---|---|
| Corte Madera | 19 | +30% |
| Mill Valley | 35 | -4% |
| San Rafael | 62 | -31% |
| San Anselmo | 7 | -53% |
| Sausalito | 9 | -56% |
The wider Marin County market
Employment and payroll are reported at county level only, so the figures below describe the county Larkspur sits in.
- County establishments (2023)
- 255
- Marin County
- County employees
- 1,823
- Mid-March employment
- County annual payroll
- $244M
- All establishments
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.
Other industries in Larkspur
Nearby cities
Sources
- U.S. Census Bureau, 2023 ZIP Code Business Patterns. Establishment counts and size distribution by ZIP code and NAICS, aggregated over the ZIP codes assigned to each city. Retrieved 2026-09-08.
- 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.