Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William R Shirer, MD

Individual provider Anesthesiology Physician · NPI 1912438854

William R Shirer, MD is an Anesthesiology in San Jose, California. Graduated from Stanford University School of Medicine in 2017, 9 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Trained at
Stanford University School of Medicine
Licensed in
CA
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

250 Hospital Pkwy
San Jose, CA 95119-1103
Phone: (408) 972-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 751 S Bascom Ave, San Jose, CA 95128-2604 — (408) 885-5110
  • 300 Pasteur Dr, Stanford, CA 94305-2200 — (650) 723-4000

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A157296 (CA)

Record details

NPI number1912438854
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2017
Last updated in NPPESAugust 1, 2022
Certification dateJune 17, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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