Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Margarita Santiago Martinez, MD

Individual provider Emergency Medicine Physician · NPI 1447605407

Margarita Santiago Martinez, MD practises Emergency Medicine in Los Angeles, California. Graduated from Michigan State University College of Human Medicine in 2014, 12 years ago. Practices with Emergency Specialist Physicians Medical Associates, Inc, a 41-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Trained at
Michigan State University College of Human Medicine
Licensed in
CA
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1200 N State St Rm 1018
Los Angeles, CA 90089-1001
Phone: (323) 226-6937
Fax: (323) 226-8101
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A142723 (CA)

Record details

NPI number1447605407
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 27, 2016
Last updated in NPPESJune 27, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 2014 (12 years in practice)
Group practice Emergency Specialist Physicians Medical Associates, Inc — 41 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients299
Services billed 471 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Emergency Specialist Physicians Medical Associates, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 41 clinicians in the practice; 12 are shown here.

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