Leah Oonk, FNP-C
Family Nurse Practitioner · Marathon, WI
Leah Oonk, FNP-C is a family nurse practitioner with a practice address in Marathon, Wisconsin, and NPI 1871314492, issued on Oct 17, 2024. Check the license (Wisconsin 16072, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Leah Oonk
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 16072 WI
223206 WI
Self-reported in NPPES; status is on the state search - Practice location
- 670 Community Cir, Marathon, WI 54448
- Phone
- (715) 443-6767
- Enumerated
- Oct 17, 2024
- Record last updated
- Oct 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20241209002396); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 670 Community Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Breanna Riesgraf, NPFamily Nurse Practitioner1699321463
Verify Leah Oonk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 16072Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Aspirus Wausau Hospital IncMarrathon, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2 family nurse practitioner records list a practice address in Marathon
They are 2 of the 22 NPPES records with a practice address in Marathon, and 2,814 family nurse practitioner records in Wisconsin.
All 2 in Marathon → All 2,814 in Wisconsin → Every provider in Marathon →
Other family nurse practitioner records in Wisconsin
- Amanda Abaya, APNPAppleton, WI1053145193
- Monaliza Abdela, FNPBrookfield, WI1760288336
- Ayia AbdeljabbarOak Creek, WI1285386094
- Adetoun Abolurin, FNPOak Creek, WI1316411390
- Anne Abresch, NURSE PRACTITIONERMilwaukee, WI1578867479
- Sumar AbushaqraSheboygan, WI1023488475
- Lindsay AchesonMilwaukee, WI1457940264
- Tyler Adamczak, APNPChippewa Falls, WI1538031588
- Inez Adams, NPWest Allis, WI1255877544
- Samantha AdamsOshkosh, WI1467853622
Common questions
What is Leah Oonk, FNP-C's NPI number?
Leah Oonk, FNP-C's National Provider Identifier (NPI) is 1871314492, issued on Oct 17, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Leah Oonk, FNP-C located?
The NPPES record lists a practice address at 670 Community Cir, Marathon, WI, 54448. Phone: (715) 443-6767. Providers update this record themselves, so call before visiting.
How can I verify Leah Oonk, FNP-C's license?
NPPES lists Wisconsin license number 16072, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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.