OrganizationActive
William W. Kirby, M.D.
NPI 1023329257 · Specialist · Auburn, CA
William W. Kirby, M.D. is a Specialist organization in Auburn, CA (NPI 1023329257).
Provider details
- NPI number
- 1023329257
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- William Kirby, Owner(530) 823-6500
- License
- G334720 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
3257 Professional Dr
Suite D
Auburn, CA 95602-2460
Phone: (530) 823-6500
Fax: (530) 823-8568
Street-level locationGet directions
Mailing address
3257 Professional Dr
Auburn, CA 95602-2460
Registry dates
- Enumerated
- 2010-06-22
- Last updated
- 2015-05-11
Frequently asked questions
- What is William W. Kirby, M.D.'s NPI number?
- William W. Kirby, M.D.'s National Provider Identifier (NPI) is 1023329257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William W. Kirby, M.D.?
- William W. Kirby, M.D. is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is William W. Kirby, M.D. located?
- William W. Kirby, M.D.'s practice location on file with NPPES is 3257 Professional Dr, Auburn, CA 95602-2460.
- What is William W. Kirby, M.D.'s phone number?
- The practice phone number listed in the NPPES registry for William W. Kirby, M.D. is (530) 823-6500.
- Who is the authorized official for William W. Kirby, M.D.?
- The authorized official listed on William W. Kirby, M.D.'s NPPES record is William Kirby, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William W. Kirby, M.D.'s NPI active?
- Yes — William W. Kirby, M.D.'s NPI (1023329257) is active in the NPPES registry as of the last update on 2015-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.