Katarzyna Osinski, NP-C
Family Nurse Practitioner · Westmont, IL
Katarzyna Osinski, NP-C is a family nurse practitioner with a practice address in Westmont, Illinois, and NPI 1548662844, issued on Sep 18, 2014. Check the license (Illinois 277.002320, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katarzyna Osinski
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 277.002320 IL
14727 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1 E Ogden Ave, Westmont, IL 60559
- Phone
- (800) 323-8622
- Enumerated
- Sep 18, 2014
- Record last updated
- Mar 3, 2025
- Fax
- (224) 225-0391
- Medicaid ID
- 100267011 WI
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 1 E Ogden Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carolyn Burton, RPHPharmacist1114207669
- Kelly Flynn, APNFamily Nurse Practitioner1740625482
- Sue Hogan, RPHPharmacist1902183601
- Joud JolakhPharmacist1215708482
- Jelvin JosephPharmacist1669083770
- Sara Lindquist, PHARMD, RPHPharmacist1336720754
Verify Katarzyna Osinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 277.002320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average family nurse practitioner in 2024
181 Medicare Part D claims for 139 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin54 claims
- Doxycycline Hyclate25 claims
- Fluticasone Propionate18 claims
- Azithromycin14 claims
- Amoxicillin-Clavulanate Potass13 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.
Katarzyna Osinski among 7,639 family nurse practitioner records in Illinois
Katarzyna Osinski, NP-C is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% 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 20% of them.
- NPI issued2014 · 20% of these records are older, 76% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2025 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family nurse practitioner records list a practice address in Westmont
They are 19 of the 814 NPPES records with a practice address in Westmont, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Westmont → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Darrell ArevaloWestmont, IL 605591417444373
- Rohini AttavaneWestmont, IL 605591447771860
- Katherine Boston, NP-CWestmont, IL 605591780076679
- Laura Box, FNP-BCWestmont, IL 605591770981417
- Jason Cropsey, APNWestmont, IL 605591942709688
- Kelly Flynn, APNWestmont, IL 605591740625482
- Debra Gill, FNPWestmont, IL 605591396042750
- Christina Grote, APRNWestmont, IL 605591588100952
Common questions
What is Katarzyna Osinski, NP-C's NPI number?
Katarzyna Osinski, NP-C's National Provider Identifier (NPI) is 1548662844, issued on Sep 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katarzyna Osinski, NP-C located?
The NPPES record lists a practice address at 1 E Ogden Ave, Westmont, IL, 60559. Phone: (800) 323-8622. Providers update this record themselves, so call before visiting.
How can I verify Katarzyna Osinski, NP-C's license?
NPPES lists Illinois license number 277.002320, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Katarzyna Osinski, NP-C prescribe under Medicare Part D?
In 2024, Katarzyna Osinski, NP-C had 181 Medicare Part D claims for 139 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.