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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARY ANNE MRDEZA MD
NPI 1811923329
Emergency Medicine in Whittier, CA

Active since June 25, 2006
12401 WASHINGTON BLVD, WHITTIER, CA 90602(562) 698-0811(818) 587-2493 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Anne Mrdeza Md NPPES

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

MARY ANNE MRDEZA MD (NPI 1811923329) is an individual emergency medicine provider in Whittier, California, licensed in California (G55627) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1811923329
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMARY ANNE MRDEZACredential: MD
Location Address12401 WASHINGTON BLVDWhittier, CA 90602-1006
Mailing AddressPo Box 4419Woodland Hills, CA 91365-4419 · (800) 506-6895 · Fax (818) 587-2493
Phone(562) 698-0811
Fax(818) 587-2493
Sole ProprietorNo
Enumeration DateJune 25, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1811923329 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 · G55627
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.
12401 WASHINGTON BLVD, Whittier, CA 90602
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Other Identifiers 2

Other00G556270CA · Blue Shield
Medicaid00G556270CA

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 RITA KAR INC
Anesthesiology
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 689-0811
TRACEY SHIN KIM MD
Internal Medicine
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
ROGER S WOODARD MD
Emergency Medicine
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
RHODORA GUEVARRA IVES
Registered Nurse
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
SERRA COLLINS PA-C
Physician Assistant
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
PIH HEALTH WHITTIER HOSPITAL
General Acute Care Hospital
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
DR. GLORIA M MORALES MD
Pediatrics (Neonatal-Perinatal Medicine)
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811
CHARLENE OSORIO PATRIARCA MSN, NP-C
Nurse Practitioner (Family)
12401 WASHINGTON BLVD
WHITTIER, CA 90602
Los Angeles County (562) 698-0811

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 Mary Anne Mrdeza's NPI number?

The NPI number for Mary Anne Mrdeza is 1811923329. It was assigned to this individual provider in the NPPES registry on June 25, 2006.

Where is Mary Anne Mrdeza located?

Mary Anne Mrdeza practices at 12401 Washington Blvd, Whittier, CA 90602. The listed phone number is (562) 698-0811.

What is Mary Anne Mrdeza's specialty?

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

When was this NPI record last updated?

The NPPES record for Mary Anne Mrdeza 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 22 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.