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

William Fornaciari, MD

Individual provider Emergency Medicine Physician · NPI 1083682546

William Fornaciari, MD practises Emergency Medicine in San Diego, California. Graduated from University of Southern California Keck School of Medicine in 1989, 37 years ago. Practices with Sharp Rees-Stealy Medical Group Inc, a 874-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA
In the registry since
2006
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

7901 Frost St
San Diego, CA 92123-2701
Phone: (619) 541-3400
Fax: (619) 285-5999
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G69338 (CA)

Record details

NPI number1083682546
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 10, 2006
Last updated in NPPESJanuary 16, 2018

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Sharp Rees-Stealy Medical Group Inc — 874 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients242
Services billed 420 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Sharp Rees-Stealy Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 874 clinicians in the practice; 12 are shown here.

Other providers in San Diego