NPI Lens

Rosalie A. De Guzman, M.D.

NPI 1386675452ActiveIndividual· Pediatrics· Corona, CA

Pediatrics (M.D.) in Corona, California, licensed in CA, with an NPI issued in July 2006. Part D covered 18 prescriptions written in 2024, 67% of them generic. Sanofi Pasteur Inc. was the largest of 6 companies reporting payments in 2025, $148.86 in all, mostly food and beverage.

Overview

NPI1386675452
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJul 6, 2006
Last updated in NPPESJul 8, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Pediatrics Primary208000000XA39804CA

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)Not in the public enrollment file of Oct 1, 2026

Part D prescriptions in 2024

Prescriptions (claims)18 · 27 30-day fills
Total drug cost$953.54
Generic share67% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$148.86 · 7 payments from 6 companies
  • 2024$192.09 · 10 payments from 5 companies

Top paying companies in 2025

CompanyAmountPayments
Sanofi Pasteur Inc.$42.662
Pfizer Inc.$38.961
Hologic Sales and Service, LLC$18.121
Cranial Technologies, Inc$17.211
Merck Sharp & Dohme LLC$16.161

What the 2025 payments were for

  • Food and Beverage$148.86 · 7 payments

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

Other pediatricians in Corona

All 30 pediatricians in Corona · All pediatricians in California