87.5%
of records are in Colusa
The city of Colusa is the clear center of the two-community count. Its corrected 2026 city population produces a rate of 10.7 records per 10,000 residents.
Colusa County · provider records and access indicators
Colusa County dentists, compared community by community
Seven of the county's eight provider records are located in Colusa. Williams has one record, and neither community has a specialist taxonomy in this snapshot.
Key findings
What stands out in Colusa County
55.3%
of the county population is represented
Colusa and Williams together represent just over half of the county estimate. Countywide conclusions should account for residents outside those two cities.
0
specialist taxonomy records
All eight records use general-dentistry taxonomies. The result does not prove specialist care is unavailable; it means no specialist practice-location record matched these cities.
- NPPES snapshot
- September 15, 2026
- Population basis
- January 1, 2026
- Communities tracked
- 2
- Method
- Practice-location addresses
Where records are located
Provider records are concentrated unevenly
The bars compare active NPI-1 records per 10,000 residents. A higher registry rate does not establish shorter waits, broader insurance participation, or more available appointments.
Williams
1.8
Population scope
Who is included in the population rate?
Colusa and Williams together represent just over half of the county estimate. Countywide conclusions should account for residents outside those two cities.
The numerator and denominator cover the same named communities. Using the full county population with this partial location count would understate the rate.
- Included population
- 12,166
- County estimate
- 22,003
- Outside the denominator
- 9,837
What this rate cannot establish
The calculation does not measure appointment capacity, patient travel, office hours, insurance participation, or dentists who serve county residents from another city.
Specialty record
Which dental specialties appear?
All eight records use general-dentistry taxonomies. The result does not prove specialist care is unavailable; it means no specialist practice-location record matched these cities.
These categories come from provider-selected NPPES taxonomies. They are not a count of specialists accepting patients.
Pediatric dentistry0
Orthodontics0
Oral surgery0
Periodontics0
Endodontics0
Prosthodontics0
Federal shortage context
3
dental HPSA designations in Colusa County
- Geographic areas
- 0
- Population groups
- 1
- Facilities
- 2
HRSA shortage designations use federal criteria and can apply to an area, a population group, or a facility. They complement the city-level NPI count but do not use the same denominator.
Review the HRSA source ↗Regional context
How does Colusa County compare?
Colusa County ranks 16 of 18 current county reports by combined provider-record rate.
This is context, not a quality ranking. Each county rate covers only the named communities shown in its report, and population coverage varies.
| County report | Records | Per 10k | Population covered |
|---|---|---|---|
| Kern County | 447 | 7.9 | 61.2% |
| San Joaquin County | 498 | 7.3 | 83.2% |
| Colusa County | 8 | 6.6 | 55.3% |
| Merced County | 143 | 6.4 | 75.6% |
| Yuba County | 8 | 4.8 | 19.2% |
Community comparison
How do Colusa County communities compare?
Counts use active individual NPI records with a dental taxonomy and a matching California practice-location city. Directory practices are shown separately for navigation.
Colusa
Incorporated city · Population 6,545
- NPI-1 records
- 7
- Directory practices
- 1
Williams
Incorporated city · Population 5,621
- NPI-1 records
- 1
- Directory practices
- 0
Method
How were the dentist counts calculated?
- 01
Query individual records
Use CMS NPPES NPI-1 records with a California practice location.
- 02
Keep dental taxonomies
Retain active records whose taxonomy code begins with 1223.
- 03
Assign communities
Match each practice-location city to one of the 2 places in this report.
- 04
Calculate rates
Divide each record count by that community's published population.
- 05
Separate practices
Show directory office profiles as a distinct navigation count.
Primary sources
Data, dates, and definitions
- 1CMS National Plan and Provider Enumeration System (NPPES) ↗
Provider and taxonomy snapshot collected September 15, 2026.
- 2California Department of Finance, E-1 Population Estimates for Cities, Counties and the State with Annual Percent Change — January 1, 2025 and 2026 ↗
January 1, 2026 city and county estimates; 2020 Census populations for census-designated places.
- 3HRSA Dental Health HPSA County and County Equivalent Listing ↗
Dental shortage designations dated September 1, 2026.
Find an office
Browse dental practices in Colusa County
Practice profiles include locations, contact details, services, and other sourced information where available.
Questions about the report
How to read the Colusa County figures
How many dentist records are in Colusa County?
Colusa County has 8 active NPI-1 dental-provider records across the 2 communities in this report. This is a count of individual federal registry records, not dental offices or available appointments.
Why does this report use named communities instead of the full county?
The provider records are assigned to practice-location cities. The rate therefore uses the combined population of those same 2 communities: 12,166 people, or 55.3% of the county estimate.
How many dental practices does the directory cover in Colusa County?
The directory currently has 1 published practice profiles across the communities in this report. Practice profiles and NPI-1 records are separate measures because one office may include several dentists.
Does an NPI record mean a dentist is accepting patients?
No. An active NPI record supports provider and practice-location analysis. It does not establish appointment availability, hours, prices, insurance participation, or whether the dentist still works at that address.
What does a dental HPSA designation show?
A federal dental Health Professional Shortage Area designation identifies a geographic area, population group, or facility that meets HRSA shortage criteria. It is a separate measure from the provider-record counts on this page.