IndividualActive
William Birtwhistle, M.D.
NPI 1073575312 · Pediatrics Physician · Sonora, CA
William Birtwhistle, M.D. is a Pediatrics Physician provider in Sonora, CA (NPI 1073575312).
Provider details
- NPI number
- 1073575312
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- G27815 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
12791 Cabezut Rd
Sonora, CA 95370-5926
Phone: (209) 532-5524
Fax: (209) 532-1518
Street-level locationGet directions
Mailing address
12791 Cabezut Rd
Sonora, CA 95370-5926
Registry dates
- Enumerated
- 2006-04-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Birtwhistle's NPI number?
- William Birtwhistle's National Provider Identifier (NPI) is 1073575312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Birtwhistle's specialty?
- William Birtwhistle is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Birtwhistle located?
- William Birtwhistle's practice location on file with NPPES is 12791 Cabezut Rd, Sonora, CA 95370-5926.
- What is William Birtwhistle's phone number?
- The practice phone number listed in the NPPES registry for William Birtwhistle is (209) 532-5524.
- Is William Birtwhistle's NPI active?
- Yes — William Birtwhistle's NPI (1073575312) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.