Chloe Koski, MD
Obstetrics & Gynecology Physician · Seattle, WA
Chloe Koski, MD is an obstetrics & gynecology physician with a practice address in Seattle, Washington, and NPI 1457053324, issued on Mar 21, 2023. Check the license (Washington MDRE.ML.61548108, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Chloe Koski
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MDRE.ML.61548108 WA
Self-reported in NPPES; status is on the state search - Practice location
- 747 Broadway, Seattle, WA 98122
- Phone
- (425) 224-7626
- Enumerated
- Mar 21, 2023
- Record last updated
- Jun 30, 2024
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,038 in Washington → Look up another NPI →
Also registered at 747 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Chloe Koski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MDRE.ML.61548108Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
12 Medicare Part D claims, against an average of 165 among the 28,733 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: $13.53
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. 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.
Chloe Koski among 1,038 obstetrics & gynecology physician records in Washington
Chloe Koski, MD 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 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, 2% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2024 · 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 Seattle → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Richard Agress, M.D.Seattle, WA 981221215902036
- Erin Berry, MDSeattle, WA 981221619130556
- Steven Buty, MDSeattle, WA 981221215030853
- Brianna Engel, MDSeattle, WA 981221699303859
- Ellen Kauffman, MDSeattle, WA 981221922162056
- Christina Kraus, MDSeattle, WA 981221629837893
- Vincent La, MDSeattle, WA 981221215386073
- Madeline Larkin, MDSeattle, WA 981221588466627
Common questions
What is Chloe Koski, MD's NPI number?
Chloe Koski, MD's National Provider Identifier (NPI) is 1457053324, issued on Mar 21, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Chloe Koski, MD located?
The NPPES record lists a practice address at 747 Broadway, Seattle, WA, 98122. Phone: (425) 224-7626. Providers update this record themselves, so call before visiting.
How can I verify Chloe Koski, MD's license?
NPPES lists Washington license number MDRE.ML.61548108, 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 Chloe Koski, MD prescribe under Medicare Part D?
In 2024, Chloe Koski, MD had 12 Medicare Part D claims; 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.