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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM H. BIRTWHISTLE M.D.
NPI 1073575312
Pediatrics in Sonora, CA

Active since April 03, 2006
12791 CABEZUT RD, SONORA, CA 95370(209) 532-5524(209) 532-1518 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William H. Birtwhistle M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM H. BIRTWHISTLE M.D. (NPI 1073575312) is an individual pediatrics provider in Sonora, California, licensed in California (G27815) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1073575312
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. WILLIAM H. BIRTWHISTLECredential: M.D.
Location Address12791 CABEZUT RDSonora, CA 95370-5926
Mailing Address12791 Cabezut RdSonora, CA 95370-5926 · (209) 532-5524 · Fax (209) 532-1518
Phone(209) 532-5524
Fax(209) 532-1518
Sole ProprietorNo
Enumeration DateApril 3, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1073575312 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · G27815
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
12791 CABEZUT RD, Sonora, CA 95370
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Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MATHEA S SALAS D.O.
Family Medicine
12791 CABEZUT RD
SONORA, CA 95370
Tuolumne County (209) 532-5524
FOOTHILL PEDIATRICS MEDICAL GROUP, INC.
Pediatrics
12791 CABEZUT RD
SONORA, CA 95370
Tuolumne County (209) 532-5524
DR. KELLEY WILLIAM GEORGE MD
Pediatrics
12791 CABEZUT RD
SONORA, CA 95370
Tuolumne County (209) 532-5524
TIM SULLIVAN MD
Pediatrics
12791 CABEZUT RD
SONORA, CA 95370
Tuolumne County (209) 532-5524

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Birtwhistle's NPI number?

The NPI number for William Birtwhistle is 1073575312. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Where is William Birtwhistle located?

William Birtwhistle practices at 12791 Cabezut Rd, Sonora, CA 95370. The listed phone number is (209) 532-5524.

What is William Birtwhistle's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for William Birtwhistle was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.