Donghyun Koo
Dentist · Seattle, WA
Donghyun Koo is a dentist with a practice address in Seattle, Washington, and NPI 1366875957, issued on Aug 19, 2013. Check the license (Washington DE60822196, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Donghyun Koo
- Primary taxonomy
- Dentist 122300000X
- License number
- DE60822196 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9776 Holman RD NW Ste 110, Seattle, WA 98117
- Phone
- (206) 783-3000
- Enumerated
- Aug 19, 2013
- Record last updated
- Jan 27, 2025
- Entity
- Type 1 · individual
8 nearest dentist records → All 2,767 in Washington → Look up another NPI →
Verify Donghyun Koo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license DE60822196Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average dentist in 2024
16 Medicare Part D claims, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $23.06
1 payment: food and beverage; the largest payer was Patterson Companies, Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Donghyun Koo among 2,767 dentist records in Washington
Donghyun Koo is one of 2,767 dentist records with a practice address in Washington. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 54% of them.
- NPI issued2013 · 54% of these records are older, 43% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dentist providers in Washington
There are 2,767 dentist records in Washington.
All 2,767 in Washington → Every provider in Seattle → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Robert Drumhiller, D.D.S.Seattle, WA 981171033205711
- Emmaleigh Gordon, DDSSeattle, WA 981171699373498
- Michael Harris, DDSSeattle, WA 981171295848372
- Linh Nguyen, D.D.S.Seattle, WA 981171710264312
- James Petersen, DDSSeattle, WA 981171114142072
- Jennifer Ward, DMDSeattle, WA 981171891998811
- Rebecca Bockow, DDSSeattle, WA 981161306036330
- Moffett Burgess, DDSSeattle, WA 981181891867883
Common questions
What is Donghyun Koo's NPI number?
Donghyun Koo's National Provider Identifier (NPI) is 1366875957, issued on Aug 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Donghyun Koo located?
The NPPES record lists a practice address at 9776 Holman RD NW Ste 110, Seattle, WA, 98117. Phone: (206) 783-3000. Providers update this record themselves, so call before visiting.
How can I verify Donghyun Koo's license?
NPPES lists Washington license number DE60822196, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Donghyun Koo prescribe under Medicare Part D?
In 2024, Donghyun Koo had 16 Medicare Part D claims; the average among dentist prescribers was 86. 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.