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JOSEPH VILLARREAL M.D.
NPI 1003229436
Emergency Medicine in Orange, CA

Active since June 03, 2014PECOS Enrolled
101 THE CITY DR S, BUILDING 1A, ROOM 1009, ORANGE, CA 92868(714) 456-5239 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 6, 2021, Mar 4, 2018 (2 updates tracked since 2018).

About Joseph Villarreal M.d. NPPES

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

JOSEPH VILLARREAL M.D. (NPI 1003229436) is an individual emergency medicine provider in Orange, California, licensed in California (A141108) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003229436
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameJOSEPH VILLARREALCredential: M.D.
Location Address101 THE CITY DR S, BUILDING 1A, ROOM 1009Orange, CA 92868-3201
Mailing Address101 The City Dr S, Building 1a, Room 1009Orange, CA 92868-3201 · (714) 456-5239
Phone(714) 456-5239
Sole ProprietorNo
Enumeration DateJune 3, 2014
Last NPPES UpdateDecember 6, 20212 updates tracked since enumeration
✔ NPI 1003229436 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A141108
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
101 THE CITY DR S, Orange, CA 92868
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joseph Villarreal M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Joseph Villarreal reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of
0.1 mi
Emergency Medicine
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 219 clinicians in this Medicare group
NPI 1154379394 (714) 456-8068
Southern California Permanente Medical Group
6.2 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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. ANKIT BHUPENDRA PATEL D.O.
Radiology (Diagnostic Radiology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5113
DR. LAURA CATHERINE SKOCZYLAS MD
Obstetrics & Gynecology
101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868
Orange County (714) 456-8224
MICHAEL CHENG DO
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7110
AESTHETIC AND PLASTIC SURGERY INSTITUTE
Plastic Surgery
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-2986
DEMI TRAN
Psychiatry & Neurology (Neurology)
101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868
Orange County (171) 456-6693
DR. ISABEL CARLTON CLARK M.D.
Surgery (Trauma Surgery)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7890
DYLAN LUKATO
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868
Orange County (415) 218-8041
HARRY NGUYEN D.O.
Internal Medicine (Hepatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7002

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 Joseph Villarreal's NPI number?

The NPI number for Joseph Villarreal is 1003229436. It was assigned to this individual provider in the NPPES registry on June 3, 2014.

Where is Joseph Villarreal located?

Joseph Villarreal practices at 101 The City Dr S Building 1A, Room 1009, Orange, CA 92868. The listed phone number is (714) 456-5239.

What is Joseph Villarreal's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Joseph Villarreal enrolled in Medicare?

Yes. Joseph Villarreal is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Joseph Villarreal's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Villarreal reassigns Medicare benefits to 2 organizations: Regents Of The University Of (Orange, CA) and Southern California Permanente Medical Group (Anaheim, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Villarreal's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joseph Villarreal was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.