NPI Lens

Roger Chang, DDS

NPI 1730516519ActiveIndividual· Dentist· San Ramon, CA

Dentist (DDS) in San Ramon, California, licensed in CA, with an NPI issued in October 2013. Part D covered 29 prescriptions written in 2024, 69% of them generic. Patterson Companies, Inc. was the largest of 3 companies reporting payments in 2025, $928.55 in all, mostly travel and lodging.

Overview

NPI1730516519
StatusActive
Entity typeIndividual
CredentialDDS
Sole proprietorYes
NPI issuedOct 11, 2013
Last updated in NPPESOct 11, 2013

Specialties and licenses

TaxonomyCodeLicenseState
Dentist Primary122300000X31222CA

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)29 · 46 30-day fills
Patients13
Total drug cost$480.92
Generic share69% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$928.55 · 5 payments from 3 companies
  • 2024$53.66 · 2 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Patterson Companies, Inc.$801.602
Align Technology, Inc.$91.092
Solventum Corporation$35.861

What the 2025 payments were for

  • Travel and Lodging$801.60 · 2 payments
  • Food and Beverage$126.95 · 3 payments

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

Other dentists in San Ramon

All 65 dentists in San Ramon · All dentists in California