Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Monica Cristina Abreu Diaz

Individual provider Internal Medicine Physician · NPI 1598294126

Monica Cristina Abreu Diaz practises Internal Medicine in Los Angeles, California. Graduated from University of Puerto Rico School of Medicine in 2019, 7 years ago. Practices with The Los Angeles Free Clinic, a 25-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Trained at
University of Puerto Rico School of Medicine
Licensed in
CA
In the registry since
2017
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Practice location Address checks out

200 UCLA Medical Plz Ste 420
Los Angeles, CA 90095-6145
Phone: (310) 206-6232
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A186278 (CA)

Record details

NPI number1598294126
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJune 7, 2017
Last updated in NPPESOctober 2, 2023
Certification dateOctober 2, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice The Los Angeles Free Clinic — 25 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 patients255
Services billed 611 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 The Los Angeles Free Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles