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Javier Emilio Alfonso, M.D.

NPI 1093952442ActiveIndividual· Internal Medicine, Nephrology· Miami, FL

Internal Medicine, Nephrology (M.D.) in Miami, Florida, licensed in FL, with an NPI issued in January 2009. Their prescriptions cost Medicare Part D more than their services did: $443,054 for 1,098 claims, against $31,301 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 10 companies reporting payments in 2025, $1,835 in all, mostly food and beverage. Lists Baptist Hospital of Miami as a hospital affiliation.

Overview

NPI1093952442
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJan 7, 2009
Last updated in NPPESNov 10, 2023
Certified by providerNov 10, 2023

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Nephrology Primary207RN0300XME111392FL
Internal Medicine207R00000XME111392FL

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Nephrology (FL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients83
Services billed307 across 9 procedure codes
Paid by Medicare$31,301

Part D prescriptions in 2024

Prescriptions (claims)1,098 · 1,510 30-day fills
Patients235
Total drug cost$443,054
Generic share45% of claims

Medicare sources and data years

Education and affiliations

Graduation year2006
Medicare specialtyNephrology
Secondary specialtiesInternal Medicine

Hospital affiliation

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$1,835 · 42 payments from 10 companies
  • 2024$861.41 · 15 payments from 7 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$1,835 · 42 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other nephrologists in Miami

All 114 nephrologists in Miami · All nephrologists in Florida