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WILLIAM E LYON PA
NPI 1144346305
Physician Assistant in San Diego, CA

Active since March 21, 2007
4647 ZION AVE, SAN DIEGO, CA 92120(619) 528-5000 Get Directions Write a Review

NPPES record last updated: September 23, 2008. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About William E Lyon Pa NPPES

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

WILLIAM E LYON PA (NPI 1144346305) is an individual physician assistant in San Diego, California, licensed in California (PA10390) and active in the NPI registry since March 2007.

NPPES Registry Identity

NPI1144346305
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameWILLIAM E LYONCredential: PA
Location Address4647 ZION AVESan Diego, CA 92120-2507
Mailing Address4647 Zion AveSan Diego, CA 92120-2507 · (619) 528-5000
Phone(619) 528-5000
Sole ProprietorNo
Enumeration DateMarch 21, 2007
Last NPPES UpdateSeptember 23, 2008
✔ NPI 1144346305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA10390
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
4647 ZION AVE, San Diego, CA 92120
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Other Providers at the Same Location NPPES 20

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

ANN MARIE PENA MD
Obstetrics & Gynecology
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 528-5000
DR. SHWETA WARNER M.D.
Internal Medicine (Infectious Disease)
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 221-6258
DR. MATTHEW JAMES ROOSEVELT M.D.
Internal Medicine
4647 ZION AVE, DEPARTMENT OF HOSPITAL MEDICINE
SAN DIEGO, CA 92120
San Diego County (619) 952-5091
RICHARD FUNG
Pharmacist
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (626) 278-2749
ARDIS L TASCHNER CRNA
Nurse Anesthetist, Certified Registered
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 528-5000
JEANNE HAGER DONAHUE LCSW
Social Worker (Clinical)
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 528-5323
DAVID M. LEVINE MD
Internal Medicine (Pulmonary Disease)
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 528-5000
DALE K. LIEU MD
Internal Medicine (Infectious Disease)
4647 ZION AVE
SAN DIEGO, CA 92120
San Diego County (619) 528-5000

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 Lyon's NPI number?

The NPI number for William Lyon is 1144346305. It was assigned to this individual provider in the NPPES registry on March 21, 2007.

Where is William Lyon located?

William Lyon practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (619) 528-5000.

What is William Lyon's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

When was this NPI record last updated?

The NPPES record for William Lyon was last updated on September 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years 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.