NPI Lens

William Y. Oh, M.D.

NPI 1770586117ActiveIndividual· Orthopaedic Surgery· Tamuning, GU

Orthopaedic Surgery (M.D.) in Tamuning, Guam, licensed in GU, KY, OH and MI and other states, with an NPI issued in May 2005. 209 Medicare patients in 2024, $91,334 paid; nearly all of their 89 Part D prescriptions were generic (99%).

Overview

NPI1770586117
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedMay 31, 2005
Last updated in NPPESApr 25, 2023
Certified by providerApr 25, 2023

Specialties and licenses

TaxonomyCodeLicenseState
Orthopaedic Surgery Primary207X00000XM-2293GU
Orthopaedic Surgery207X00000X17710KY
Orthopaedic Surgery207X00000X80045OH
Orthopaedic Surgery207X00000X4301106667MI
Orthopaedic Surgery207X00000X01079317AIN
Orthopaedic Surgery, Hand Surgery207XS0106X0101035843VA
Orthopaedic Surgery, Hand Surgery207XS0106X80045OH
Orthopaedic Surgery, Orthopaedic Trauma207XX0801X80045OH

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Orthopedic Surgery (GU)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients209
Services billed3,950 across 74 procedure codes
Paid by Medicare$91,334

Part D prescriptions in 2024

Prescriptions (claims)89 · 93 30-day fills
Patients30
Total drug cost$1,424
Generic share99% of claims

Medicare sources and data years

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

Other Orthopaedic Surgery providers in Tamuning

All Orthopaedic Surgery providers in Guam →