MISSION VIEJO EMERGENCY MEDICAL ASSOCIATES
NPI 1073542916
Emergency Medicine in Mission Viejo, CA

Active since July 02, 2006
27700 MEDICAL CENTER RD, MISSION VIEJO, CA 92691(844) 474-4019(330) 493-8677 Get Directions Write a Review

NPPES record last updated: February 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 12, 2025, Jun 13, 2024, Nov 14, 2023 and 2 more (5 updates tracked since 2016).

About Mission Viejo Emergency Medical Associates NPPES

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

MISSION VIEJO EMERGENCY MEDICAL ASSOCIATES (NPI 1073542916) is a healthcare organization registered as an emergency medicine in Mission Viejo, California and active in the NPI registry since July 2006. The organization lists Jennifer Chastain, Director Of Provider Enrollment, as its authorized official.

NPPES Registry Identity

NPI1073542916
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameMISSION VIEJO EMERGENCY MEDICAL ASSOCIATES
Location Address27700 MEDICAL CENTER RDMission Viejo, CA 92691-6426
Mailing Address4535 Dressler Rd NwCanton, OH 44718-2545 · (844) 474-4019
Fax(330) 493-8677
Organization SubpartNo
Authorized OfficialJennifer ChastainDirector Of Provider Enrollment · (330) 493-4443
Enumeration DateJuly 2, 2006
Last NPPES UpdateFebruary 12, 20255 updates tracked since enumeration
NPPES CertifiedFebruary 12, 2025
✔ NPI 1073542916 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
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.
27700 MEDICAL CENTER RD, Mission Viejo, CA 92691

Other Identifiers 1

MedicaidGR0077070CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mission Viejo Emergency Medical Associates is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

86

Medicare enrollment records show 86 clinicians reassign Medicare billing to Mission Viejo Emergency Medical Associates, which bills Medicare for the services they deliver. Of these, 9 practice at this address and 20 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Emergency Medicine74
Nurse Practitioner10
Family Practice1
Pediatric Medicine1

Nearest to this location (20)

See all 86
Emergency Medicine
NPI 1679505622
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1457515272
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 365-2202
✔ PECOS✔ Accepts MedicareSame address
Emergency Medicine
NPI 1518991322
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOS✔ Accepts MedicareSame address
Emergency Medicine
NPI 1851319503
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1902839863
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1750314621
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1417980244
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1477587327
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOSSame address
Emergency Medicine
NPI 1295769156
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOS✔ Accepts MedicareSame address
Emergency Medicine
NPI 1801965835
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOS0.1 mi
Emergency Medicine
NPI 1457380107
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 309-8434
✔ PECOS0.1 mi
Emergency Medicine
NPI 1386801058
26800 CROWN VALLEY PKWY STE 340
Mission Viejo, CA 92691
(949) 889-2020
✔ PECOS0.1 mi
Nurse Practitioner
NPI 1861770083
22 DOWNING ST
Ladera Ranch, CA 92694
(949) 218-0933
✔ PECOS✔ Accepts Medicare1.4 mi
Emergency Medicine
NPI 1932563533
30230 RANCHO VIEJO RD STE 134
San Juan Capistrano, CA 92675
(949) 702-6736
✔ PECOS✔ Accepts Medicare2.6 mi
Emergency Medicine
NPI 1588640312
705 MARLIN
Laguna Beach, CA 92651
(760) 409-1165
✔ PECOS5.8 mi
Emergency Medicine
NPI 1174085260
31872 COAST HWY
Laguna Beach, CA 92651
(949) 499-1311
✔ PECOS✔ Accepts Medicare6.0 mi
Emergency Medicine
NPI 1588078448
31872 COAST HWY
Laguna Beach, CA 92651
(949) 499-3222
✔ PECOS✔ Accepts Medicare6.0 mi
Nurse Practitioner
NPI 1619293925
31872 COAST HWY
Laguna Beach, CA 92651
(949) 499-7283
✔ PECOS6.0 mi
Emergency Medicine
NPI 1790738292
16200 SAND CANYON AVE
Irvine, CA 92618
(949) 517-3010
✔ PECOS9.2 mi
Nurse Practitioner
NPI 1285827956
16205 SAND CANYON AVE STE 100
Irvine, CA 92618
(949) 557-0000
✔ PECOS✔ Accepts Medicare9.4 mi
See all 86 clinicians

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

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 Mission Viejo Emergency Medical Associates's NPI number?

The NPI number for Mission Viejo Emergency Medical Associates is 1073542916. It was assigned to this organization in the NPPES registry on July 2, 2006.

Where is Mission Viejo Emergency Medical Associates located?

Mission Viejo Emergency Medical Associates is located at 27700 Medical Center Rd, Mission Viejo, CA 92691. The listed phone number is (844) 474-4019.

What is Mission Viejo Emergency Medical Associates's specialty?

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

Is Mission Viejo Emergency Medical Associates enrolled in Medicare?

Yes. Mission Viejo Emergency Medical Associates is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mission Viejo Emergency Medical Associates?

According to the CMS Revalidation Reassignment List (October 2026 release), 86 clinicians in 4 Medicare specialties reassign their Medicare billing to Mission Viejo Emergency Medical Associates. A 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 the clinician's services. The largest specialties are Emergency Medicine (74), Nurse Practitioner (10) and Family Practice (1). Of these, 9 practice at this address and 20 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Mission Viejo Emergency Medical Associates was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.