Gustavo Calleja, M.D.

NPI 1003891029ActiveIndividual· Internal Medicine, Gastroenterology· Miami, FL

Internal Medicine, Gastroenterology (M.D.) in Miami, Florida, trained at University of Miami, Lm Miller School of Medicine (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $343,363 for 1,502 claims, against $122,664 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $1,054 in all, mostly food and beverage.

Overview

NPI	1003891029
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Dec 13, 2005
Last updated in NPPES	Mar 7, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	ME43325	FL

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 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

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

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Gastroenterology (FL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	229
Services billed	5,169 across 26 procedure codes
Paid by Medicare	$122,664

Part D prescriptions in 2024

Prescriptions (claims)	1,502 · 2,920 30-day fills
Patients	558
Total drug cost	$343,363
Generic share	75% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Miami, Lm Miller School of Medicine
Graduation year	1982
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth