NPI Lens

Nicandro Gerardo Castaneda, M.D.

NPI 1578595245ActiveIndividual· Internal Medicine· Santa Maria, CA

Internal Medicine (M.D.) in Santa Maria, California, trained at University of California, Davis School of Medicine (class of 1990). 284 Medicare patients in 2024, $61,681 paid; nearly all of their 170 Part D prescriptions were generic (94%).

Overview

NPI1578595245
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJul 6, 2006
Last updated in NPPESApr 7, 2008

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XG73531CA

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 - Emergency Medicine (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients284
Services billed792 across 9 procedure codes
Paid by Medicare$61,681

Part D prescriptions in 2024

Prescriptions (claims)170 · 177 30-day fills
Patients70
Total drug cost$6,902
Generic share94% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of California, Davis School of Medicine
Graduation year1990
Medicare specialtyEmergency Medicine

Medical group

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

Other internal medicine physicians in Santa Maria

All 37 internal medicine physicians in Santa Maria · All internal medicine physicians in California