William Y. Oh, M.D.
Orthopaedic Surgery Physician · Tamuning, GU
William Y. Oh, M.D. is an orthopaedic surgery physician with a practice address in Tamuning, Guam, and NPI 1770586117, issued on May 31, 2005. Check the license (Guam M-2293, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Y. Oh
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- M-2293 GU
01079317A IN
17710 KY
4301106667 MI
80045 OH
and 1 more
Self-reported in NPPES; status is on the state search - Practice location
- 388 Ypao RD, Tamuning, GU 96913
- Phone
- (671) 646-8881
- Enumerated
- May 31, 2005
- Record last updated
- Apr 25, 2023
- Fax
- (671) 646-1292
- Medicaid IDs
- 7100187290 KY
006409458 VA - Entity
- Type 1 · individual
7 nearest orthopaedic surgery physician records → All 8 in Guam → Look up another NPI →
Also registered at 388 Ypao RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arnie Lou Baker, NPFamily Nurse Practitioner1487132973
- Alison Chong, FNPFamily Nurse Practitioner1073111712
- Dae-Eil ChongPhysical Therapist1831474410
- Phyllis Collins, C.N.P.Nurse Practitioner1780629378
- Angeline David, DRPH, MHS, RDRegistered Dietitian1538586581
- Daniel Debardeleben, MDFamily Medicine Physician1598253379
Verify William Y. Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M-2293Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
89 Medicare Part D claims for 30 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D.
Most prescribed
- Celecoxib27 claims
- Naproxen23 claims
- Ibuprofen13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Orthopaedic Surgery Physician providers in Guam
There are 8 orthopaedic surgery physician records in Guam.
All 8 in Guam → Every provider in Tamuning → Orthopaedic Surgery Physician nationwide →
The 7 orthopaedic surgery physician records with the nearest ZIP codes
- Ruben Arafiles, MDTamuning, GU 969131659467504
- Jan Bollinger, MDTamuning, GU 969131952497802
- Glenn Cunningham, MDTamuning, GU 969131629135348
- Conor McCarthy, MDAgana Heights, GU 969101336602036
- Jordan Tropf, MDAgana Heights, GU 969101952767204
- Carmelino Galang, M.D.Dededo, GU 969291326070046
- Jarod Goodrich, DODededo, GU 969291821257304
Common questions
What is William Y. Oh, M.D.'s NPI number?
William Y. Oh, M.D.'s National Provider Identifier (NPI) is 1770586117, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Y. Oh, M.D. located?
The NPPES record lists a practice address at 388 Ypao RD, Tamuning, GU, 96913. Phone: (671) 646-8881. Providers update this record themselves, so call before visiting.
How can I verify William Y. Oh, M.D.'s license?
NPPES lists Guam license number M-2293, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does William Y. Oh, M.D. prescribe under Medicare Part D?
In 2024, William Y. Oh, M.D. had 89 Medicare Part D claims for 30 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.