Monica Adriana Diaz, MD

NPI 1316206204ActiveIndividual· Internal Medicine, Medical Oncology· El Paso, TX

Internal Medicine, Medical Oncology (MD) in El Paso, Texas, trained at Texas A & M University System, Hsc, College of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $4,465,735 for 1,471 claims, against $1,923,570 paid for services in 2024. Pfizer Inc. reported $15.50 in payments in 2025, mostly education.

Overview

NPI	1316206204
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	May 11, 2012
Last updated in NPPES	Jan 18, 2022
Certified by provider	Jan 18, 2022

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Medical Oncology Primary	207RX0202X	Q3356	TX
Internal Medicine	207R00000X	BP10043537	TX

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Medical Oncology (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	248
Services billed	124,660 across 137 procedure codes
Paid by Medicare	$1,923,570

Part D prescriptions in 2024

Prescriptions (claims)	1,471 · 2,058 30-day fills
Patients	267
Total drug cost	$4,465,735
Generic share	67% of claims

Medicare sources and data years

Education and affiliations

Medical school	Texas A & M University System, Hsc, College of Medicine
Graduation year	2012
Medicare specialty	Medical Oncology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth