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Richard Usang Koh, DDS, MS

NPI 1215135579ActiveIndividual· Dentist, Periodontics· Los Alamitos, CA

Dentist, Periodontics (DDS, MS) in Los Alamitos, California, licensed in CA and VA, with an NPI issued in July 2007. Part D covered 242 prescriptions written in 2024, 98% of them generic. Zimvie Inc. was the largest of 2 companies reporting payments in 2025, $131.01 in all, mostly food and beverage.

Overview

NPI1215135579
StatusActive
Entity typeIndividual
CredentialDDS, MS
Sole proprietorNo
NPI issuedJul 10, 2007
Last updated in NPPESNov 22, 2021
Certified by providerNov 22, 2021

Specialties and licenses

TaxonomyCodeLicenseState
Dentist, Periodontics Primary1223P0300X59329CA
Dentist, Periodontics1223P0300X0401413737VA

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)242 · 243 30-day fills
Patients158
Total drug cost$1,786
Generic share98% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$131.01 · 4 payments from 2 companies
  • 2024$50.97 · 2 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Zimvie Inc.$110.013
Geistlich Pharma, North America, Inc.$21.001

What the 2025 payments were for

  • Food and Beverage$131.01 · 4 payments

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

Other periodontists in Los Alamitos

All periodontists in California