NPI Lens

Romeo Aidana Castillo, MD

NPI 1659345403ActiveIndividual· Internal Medicine· Huntington Park, CA

Internal Medicine (MD) in Huntington Park, California, licensed in CA, with an NPI issued in February 2006. Part D covered 2,652 prescriptions written in 2024, 90% of them generic. Abbvie Inc. was the largest of 3 companies reporting payments in 2024, $1,434 in all, mostly consulting fees.

Overview

NPI1659345403
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedFeb 16, 2006
Last updated in NPPESJul 13, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XA49358CA

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 - Internal Medicine (CA)

Part D prescriptions in 2024

Prescriptions (claims)2,652 · 6,752 30-day fills
Patients193
Total drug cost$174,505
Generic share90% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2024$1,434 · 5 payments from 3 companies

Top paying companies in 2024

CompanyAmountPayments
Abbvie Inc.$1,3582
Lilly USA, LLC$60.292
Merck Sharp & Dohme LLC$15.231

What the 2024 payments were for

  • Consulting Fee$1,350 · 1 payment
  • Food and Beverage$83.84 · 4 payments

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

Other internal medicine physicians in Huntington Park

All 24 internal medicine physicians in Huntington Park · All internal medicine physicians in California