Esther Koo, D.O.
Family Medicine Physician · Bellevue, WA
Esther Koo, D.O. is a family medicine physician with a practice address in Bellevue, Washington, and NPI 1982019824, issued on Jun 30, 2014. Check the license (Washington OP60742178, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Esther Koo
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OP60742178 WA
Self-reported in NPPES; status is on the state search - Practice location
- 13451 SE 36TH St, Bellevue, WA 98006
- Phone
- (425) 562-1337
- Enumerated
- Jun 30, 2014
- Record last updated
- Apr 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (425) 562-1331
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 13451 SE 36TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Esther Koo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP60742178Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average family medicine physician in 2024
1,368 Medicare Part D claims for 828 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 22 claims were for opioids.
Most prescribed
- Atorvastatin Calcium67 claims
- Levothyroxine Sodium57 claims
- Amlodipine Besylate43 claims
- Rosuvastatin Calcium39 claims
- Lisinopril37 claims
- Losartan Potassium34 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.
Esther Koo among 5,534 family medicine physician records in Washington
Esther Koo, D.O. is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 70% of them.
- NPI issued2014 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 family medicine physician records list a practice address in Bellevue
They are 129 of the 6,738 NPPES records with a practice address in Bellevue, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Bellevue → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Janice L Bishop, M.D.Bellevue, WA 980061174575518
- Alan Bunin, M.D.Bellevue, WA 980061700805397
- David Gamrath, DOBellevue, WA 980061952412264
- Maura Glynn-ThamiBellevue, WA 980061720163553
- Thomas Hei, MDBellevue, WA 980061194839837
- Esther Liu, MDBellevue, WA 980061801979836
- David McFarland, MDBellevue, WA 980061497839104
- Peter McGoughBellevue, WA 980061013092824
Common questions
What is Esther Koo, D.O.'s NPI number?
Esther Koo, D.O.'s National Provider Identifier (NPI) is 1982019824, issued on Jun 30, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Esther Koo, D.O. located?
The NPPES record lists a practice address at 13451 SE 36TH St, Bellevue, WA, 98006. Phone: (425) 562-1337. Providers update this record themselves, so call before visiting.
How can I verify Esther Koo, D.O.'s license?
NPPES lists Washington license number OP60742178, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Esther Koo, D.O. prescribe under Medicare Part D?
In 2024, Esther Koo, D.O. had 1,368 Medicare Part D claims for 828 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.