Ju Yong Koh, DO
Obstetrics & Gynecology Physician · Bellevue, WA
Ju Yong Koh, DO is an obstetrics & gynecology physician with a practice address in Bellevue, Washington, and NPI 1689134751, issued on Mar 23, 2019. Check the license (Washington DO.OP.70121943-IMLC, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ju Yong Koh
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- DO.OP.70121943-IMLC WA
Self-reported in NPPES; status is on the state search - Practice location
- 1231 116TH Ave NE Bldg 5, Bellevue, WA 98004
- Phone
- (425) 454-3366
- Enumerated
- Mar 23, 2019
- Record last updated
- Jul 28, 2026
- Medicare enrollment
- Enrolled (PECOS I20230707001078); accepts Medicare assignment
- Medical or professional school
- Campbell Univ School Of Osteopathic Medicine, 2019
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,038 in Washington → Look up another NPI →
Verify Ju Yong Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license DO.OP.70121943-IMLCCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
24 Medicare Part D claims for 14 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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: $32.38
1 payment: food and beverage; the largest payer was Applied Medical Resources Corporation. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Central Dupage Physician GroupGeneva, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ju Yong Koh among 1,038 obstetrics & gynecology physician records in Washington
Ju Yong Koh, DO is one of 1,038 obstetrics & gynecology physician records with a practice address in Washington. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 90% of them.
- NPI issued2019 · 90% of these records are older, 7% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2019 · median 2007 among the 582 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Washington
There are 1,038 obstetrics & gynecology physician records in Washington.
All 1,038 in Washington → Every provider in Bellevue → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Danica Bloomquist, MDBellevue, WA 980041487664413
- Angela Chien, M.D.Bellevue, WA 980041952490088
- Kristin Graham, MDBellevue, WA 980041659370898
- James Haines, MDBellevue, WA 980041952300212
- Ann Kolwitz, MDBellevue, WA 980041811996531
- James Kustin, MDBellevue, WA 980041518024876
- Michael Lawler, MDBellevue, WA 980041801895529
- Pamela Lutz, MDBellevue, WA 980041255367066
Common questions
What is Ju Yong Koh, DO's NPI number?
Ju Yong Koh, DO's National Provider Identifier (NPI) is 1689134751, issued on Mar 23, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ju Yong Koh, DO located?
The NPPES record lists a practice address at 1231 116TH Ave NE Bldg 5, Bellevue, WA, 98004. Phone: (425) 454-3366. Providers update this record themselves, so call before visiting.
How can I verify Ju Yong Koh, DO's license?
NPPES lists Washington license number DO.OP.70121943-IMLC, 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 Ju Yong Koh, DO prescribe under Medicare Part D?
In 2024, Ju Yong Koh, DO had 24 Medicare Part D claims for 14 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.