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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

XAVIER ZELAYA
NPI 1710839345
Physician Assistant in Antioch, CA

Active since February 14, 2026
3901 LONE TREE WAY, ANTIOCH, CA 94509(925) 779-7200 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Xavier Zelaya NPPES

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

XAVIER ZELAYA (NPI 1710839345) is an individual physician assistant in Antioch, California, licensed in California (68168) and active in the NPI registry since February 2026.

NPPES Registry Identity

NPI1710839345
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameXAVIER ZELAYA
Location Address3901 LONE TREE WAYAntioch, CA 94509-6200
Mailing Address3901 Lone Tree WayAntioch, CA 94509-6200
Phone(925) 779-7200
Sole ProprietorNo
Enumeration DateFebruary 14, 2026
Last NPPES UpdateJuly 9, 2026
NPPES CertifiedJuly 9, 2026
✔ NPI 1710839345 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 · 68168
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.
3901 LONE TREE WAY, Antioch, CA 94509
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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.

DR. DUNG THINGOC NGUYEN PHARM. D.
Pharmacist
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-7200
KATHLEEN A REGACHO MD
Emergency Medicine
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-3522
KHANH D NGUYEN M.D.
Emergency Medicine
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (510) 350-2657
CATHERINE JANSON PROSSER N.P.
Registered Nurse
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-7200
MARY ANTIONETTE FITZSIMONS M.D
Emergency Medicine
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-7273
CATHERINE J. BELL MD
Anesthesiology
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-7200
DR. PATRICIA ANNE YABUT HARO M.D.
Hospitalist
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (916) 854-6975
MARGARET HELEN BEAR PA-C
Physician Assistant (Medical)
3901 LONE TREE WAY
ANTIOCH, CA 94509
Contra Costa County (925) 779-7200

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 Xavier Zelaya's NPI number?

The NPI number for Xavier Zelaya is 1710839345. It was assigned to this individual provider in the NPPES registry on February 14, 2026.

Where is Xavier Zelaya located?

Xavier Zelaya practices at 3901 Lone Tree Way, Antioch, CA 94509. The listed phone number is (925) 779-7200.

What is Xavier Zelaya'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 Xavier Zelaya was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 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.