Karen L. Kostenko, PA-C
Physician Assistant · Portland, OR
Karen L. Kostenko, PA-C is a physician assistant with a practice address in Portland, Oregon, and NPI 1841672870, issued on Jun 26, 2015. Check the license (Oregon PA187236, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen L. Kostenko
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA187236 OR
53029 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1350 NE 122ND Ave Ste 200, Portland, OR 97230
- Phone
- (503) 408-7008
- Enumerated
- Jun 26, 2015
- Record last updated
- Jan 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (503) 666-6745
- Medicare enrollment
- Enrolled (PECOS I20200203001486); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,094 in Oregon → Look up another NPI →
Also registered at 1350 NE 122ND Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Imelda Kelly, MDFamily Medicine Physician1356306575
Verify Karen L. Kostenko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license PA187236Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average physician assistant in 2024
204 Medicare Part D claims for 144 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Sulfamethoxazole-Trimethoprim21 claims
- Doxycycline Hyclate15 claims
- Nitrofurantoin Mono-Macro14 claims
- Prednisone13 claims
- Albuterol Sulfate Hfa12 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.
The MIPS final score for 2023 (Medicare payment program): 97.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Portland Adventist Medical CenterClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen L. Kostenko among 2,094 physician assistant records in Oregon
Karen L. Kostenko, PA-C is one of 2,094 physician assistant records with a practice address in Oregon. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 44% of them.
- NPI issued2015 · 44% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2017 among the 1,552 with a school on file
- Record last updated2020 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in Oregon
There are 2,094 physician assistant records in Oregon.
All 2,094 in Oregon → Every provider in Portland → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Megan Jasper, PA-CPortland, OR 972301790212983
- Sam Nguyen, PA-CPortland, OR 972301386046555
- Meera PatelPortland, OR 972301962978593
- Rosario Salazar-Collet, MHS,PA(ASCP)Portland, OR 972301114034436
- Colton Vermillion, PA-CPortland, OR 972301275307043
- Trung Chung, PA-CPortland, OR 972291720489297
- Jessica Harper, PA-CPortland, OR 972291306507751
- Maureen Shenker, PA-CPortland, OR 972291255547782
Common questions
What is Karen L. Kostenko, PA-C's NPI number?
Karen L. Kostenko, PA-C's National Provider Identifier (NPI) is 1841672870, issued on Jun 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Karen L. Kostenko, PA-C located?
The NPPES record lists a practice address at 1350 NE 122ND Ave Ste 200, Portland, OR, 97230. Phone: (503) 408-7008. Providers update this record themselves, so call before visiting.
How can I verify Karen L. Kostenko, PA-C's license?
NPPES lists Oregon license number PA187236, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Karen L. Kostenko, PA-C prescribe under Medicare Part D?
In 2024, Karen L. Kostenko, PA-C had 204 Medicare Part D claims for 144 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Karen L. Kostenko, PA-C's MIPS final score?
The 2023 MIPS final score is 97.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.