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

JEFFREY ADAM OBRIEN PA-C
NPI 1093501512
Physician Assistant in Mission Viejo, CA

Active since April 21, 2025
26024 ACERO, MISSION VIEJO, CA 92691(714) 545-5550 Get Directions Write a Review

NPPES record last updated: October 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Jeffrey Adam Obrien Pa-c NPPES

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

JEFFREY ADAM OBRIEN PA-C (NPI 1093501512) is an individual physician assistant in Mission Viejo, California, licensed in California (PA69052) and active in the NPI registry since April 2025.

NPPES Registry Identity

NPI1093501512
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameJEFFREY ADAM OBRIENCredential: PA-C
Location Address26024 ACEROMission Viejo, CA 92691-2768
Mailing Address200 Via DijonNewport Beach, CA 92663-4631 · (949) 933-1532
Sole ProprietorNo
Enumeration DateApril 21, 2025
Last NPPES UpdateOctober 29, 2026
NPPES CertifiedOctober 29, 2026
✔ NPI 1093501512 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 · PA69052
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.
26024 ACERO, Mission Viejo, CA 92691

Other Providers at the Same Location NPPES 12

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

Physician Assistant (Medical)
26024 ACERO
MISSION VIEJO, CA 92691
Clinical Nurse Specialist (Psychiatric/Mental Health)
26024 ACERO
MISSION VIEJO, CA 92691
Physician Assistant
26024 ACERO
MISSION VIEJO, CA 92691
Psychiatry & Neurology (Psychiatry)
26024 ACERO
MISSION VIEJO, CA 92691
Clinical Nurse Specialist (Psychiatric/Mental Health)
26024 ACERO
MISSION VIEJO, CA 92691
Psychiatry & Neurology (Psychiatry)
26024 ACERO
MISSION VIEJO, CA 92691
Physician Assistant
26024 ACERO
MISSION VIEJO, CA 92691
Clinical Nurse Specialist (Psychiatric/Mental Health)
26024 ACERO
MISSION VIEJO, CA 92691

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 Jeffrey Obrien's NPI number?

The NPI number for Jeffrey Obrien is 1093501512. It was assigned to this individual provider in the NPPES registry on April 21, 2025.

Where is Jeffrey Obrien located?

Jeffrey Obrien practices at 26024 Acero, Mission Viejo, CA 92691. The listed phone number is (714) 545-5550.

What is Jeffrey Obrien'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 Jeffrey Obrien was last updated on October 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.