Mark Kortbaoui, DO
Family Medicine Physician · Kennewick, WA
Mark Kortbaoui, DO is a family medicine physician with a practice address in Kennewick, Washington, and NPI 1942762851, issued on Apr 1, 2019. Check the license (Washington OP61564493, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mark Kortbaoui
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OP61564493 WA
Self-reported in NPPES; status is on the state search - Practice location
- 320 W 10TH Ave Ste 202, Kennewick, WA 99336
- Phone
- (509) 221-5520
- Enumerated
- Apr 1, 2019
- Record last updated
- Oct 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20241016000578); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 320 W 10TH Ave Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eryn Reager, DOFamily Medicine Physician1316689813
Verify Mark Kortbaoui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP61564493Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average family medicine physician in 2024
615 Medicare Part D claims for 193 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium37 claims
- Amoxicillin-Clavulanate Potass21 claims
- Amlodipine Besylate20 claims
- Azithromycin20 claims
- Lisinopril18 claims
- Cephalexin17 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.
Bills Medicare through one group practice
- Prosser Public Hospital District OF Benton CountyBenton City, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Kortbaoui among 5,534 family medicine physician records in Washington
Mark Kortbaoui, DO 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2021 · median 2009 among the 3,294 with a school on file
- Record last updated2024 · 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).
69 family medicine physician records list a practice address in Kennewick
They are 69 of the 2,317 NPPES records with a practice address in Kennewick, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Kennewick → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Arthurs, MDKennewick, WA 993361508843046
- Brian Barstad, M.D.Kennewick, WA 993361871596346
- Byron Burrup, D.O.Kennewick, WA 993361598751729
- Sheila Dunlop, D.O.Kennewick, WA 993361093703852
- Mark Flesher, M.D.Kennewick, WA 993361497741771
- Sergio Flores, MDKennewick, WA 993361275510869
- Jennifer Follwell, DOKennewick, WA 993361093785982
- Mark Hoitink, MDKennewick, WA 993361790785962
Common questions
What is Mark Kortbaoui, DO's NPI number?
Mark Kortbaoui, DO's National Provider Identifier (NPI) is 1942762851, issued on Apr 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mark Kortbaoui, DO located?
The NPPES record lists a practice address at 320 W 10TH Ave Ste 202, Kennewick, WA, 99336. Phone: (509) 221-5520. Providers update this record themselves, so call before visiting.
How can I verify Mark Kortbaoui, DO's license?
NPPES lists Washington license number OP61564493, 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 Mark Kortbaoui, DO prescribe under Medicare Part D?
In 2024, Mark Kortbaoui, DO had 615 Medicare Part D claims for 193 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.