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THERESA S MAESTAS MD
NPI 1043242373
Emergency Medicine in Fountain Valley, CA

Active since July 07, 2006
17100 EUCLID ST, FOUNTAIN VALLEY, CA 92708(714) 966-7200 Get Directions Write a Review

NPPES record last updated: April 30, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Theresa S Maestas Md NPPES

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

THERESA S MAESTAS MD (NPI 1043242373) is an individual emergency medicine provider in Fountain Valley, California, licensed in California (G43392) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1043242373
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameTHERESA S MAESTASCredential: MD
Location Address17100 EUCLID STFountain Valley, CA 92708
Mailing AddressPo Box 20140Fountain Valley, CA 92728-0140 · (562) 809-3572
Phone(714) 966-7200
Sole ProprietorNo
Enumeration DateJuly 7, 2006
Last NPPES UpdateApril 30, 2008
✔ NPI 1043242373 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 · G43392
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.
17100 EUCLID ST, Fountain Valley, CA 92708
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Other Identifiers 3

Medicare PINWG43392HCA
Medicare UPINA92406
Medicaid00G433920CA

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.

HAI PHAM PHARM D
Pharmacist
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (174) 513-5586
DALILAH RESTREPO MD, A MEDICAL CORPORATION
Internal Medicine (Infectious Disease)
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (917) 376-0967
DR. JANELLE PENALOSA AGUSTIN PHARMD
Pharmacist
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (714) 966-7262
SANDRA KLUWE, M.D., INC.
Anesthesiology
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (714) 979-1211
DR. SANDRA W KLUWE M.D.
Anesthesiology
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (714) 979-1211
JOEE QUYEN TRUONG R.N
Nurse Practitioner
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (714) 966-7200
ELSA A. TEKLE M.D.
Anesthesiology
17100 EUCLID ST
FOUNTAIN VALLEY, CA 92708
Orange County (714) 949-1211
GRAHAM C TSE MD
Pediatrics (Pediatric Critical Care Medicine)
17100 EUCLID ST, DEPARTMENT PICU/PEDS
FOUNTAIN VALLEY, CA 92708
Orange County (714) 966-7253

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 Theresa Maestas's NPI number?

The NPI number for Theresa Maestas is 1043242373. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Theresa Maestas located?

Theresa Maestas practices at 17100 Euclid St, Fountain Valley, CA 92708. The listed phone number is (714) 966-7200.

What is Theresa Maestas'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 Theresa Maestas was last updated on April 30, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.