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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.

STEPHEN F DIAZ P.A.
NPI 1417996687
Physician Assistant - Surgical in Sacramento, CA

Active since June 05, 2006
3941 J ST, SUITE 270, SACRAMENTO, CA 95819(916) 733-6850(916) 733-6824 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Stephen F Diaz P.a. NPPES

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

STEPHEN F DIAZ P.A. (NPI 1417996687) is an individual surgical provider in Sacramento, California, licensed in California (PA10027) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1417996687
Entity TypeIndividualMale
Primary Taxonomy363AS0400X
Provider Legal NameSTEPHEN F DIAZCredential: P.A.
Location Address3941 J ST, SUITE 270Sacramento, CA 95819-3628
Mailing Address3941 J St, Suite 270Sacramento, CA 95819-3628 · (916) 733-6850 · Fax (916) 733-6824
Phone(916) 733-6850
Fax(916) 733-6824
Sole ProprietorNo
Enumeration DateJune 5, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1417996687 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License✔ Licensed in CA · PA10027
3941 J ST, Sacramento, CA 95819
Open in Google Maps ↗

Other Identifiers 1

MedicaidPA10027CA

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.

HEALTHWISE MEDICAL GROUP
Urology
3941 J ST, SUITE 250
SACRAMENTO, CA 95819
Sacramento County (916) 733-6800
REGIONAL CARDIOLOGY ASSOCIATES MEDICAL GROUP, INC.
Internal Medicine (Cardiovascular Disease)
3941 J ST, SUITE 260
SACRAMENTO, CA 95819
Sacramento County (916) 736-2323
DR. JOHN RICHARD DEIN M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3941 J ST, SUITE 270
SACRAMENTO, CA 95819
Sacramento County (916) 733-6850
CHARLES ROSSITER KUEHNER M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3941 J ST, SUITE 270
SACRAMENTO, CA 95819
Sacramento County (916) 733-6850
FRANK NORMAN SLACHMAN M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3941 J ST, SUITE 270
SACRAMENTO, CA 95819
Sacramento County (916) 733-6850
JONG L. CHEN, M.D., INC.
Preferred Provider Organization
3941 J ST, SUITE 250
SACRAMENTO, CA 95819
Sacramento County (916) 733-6800
CARDIAC SURGERY WEST MEDICAL CORPORATION
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3941 J ST, SUITE 270
SACRAMENTO, CA 95819
Sacramento County (916) 733-6850
KELSEY ANNE JOHNSON
Nurse Anesthetist, Certified Registered
3941 J ST
SACRAMENTO, CA 95819
Sacramento County (916) 453-4545

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 Stephen Diaz's NPI number?

The NPI number for Stephen Diaz is 1417996687. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is Stephen Diaz located?

Stephen Diaz practices at 3941 J St Suite 270, Sacramento, CA 95819. The listed phone number is (916) 733-6850.

What is Stephen Diaz's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

When was this NPI record last updated?

The NPPES record for Stephen Diaz 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 34 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.