Diane Sue Wilken, FNP-C
Nurse Practitioner · Eau Claire, WI
Diane Sue Wilken, FNP-C is a nurse practitioner with a practice address in Eau Claire, Wisconsin, and NPI 1245802032, issued on Jul 12, 2021. Check the license (Wisconsin 11077-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diane Sue Wilken
- Credential
- FNP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 11077-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- 733 W Clairemont Ave, Eau Claire, WI 54701
- Phone
- (715) 838-5340
- Enumerated
- Jul 12, 2021
- Record last updated
- Feb 4, 2026
- Medicare enrollment
- Enrolled (PECOS I20250909004842); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
Also registered at 733 W Clairemont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abdulla Akfaly, MDInternal Medicine Physician1619956224
- Kay Alberg, RDNutritionist1962775791
- Richard Alfuth, MDFamily Medicine Physician1194783209
- John Anczak, PACPhysician Assistant1881793206
- Matthew Anderson, LPCProfessional Counselor1366698706
- Aamir Ansari, M.D.Pediatrics Physician1295918696
Verify Diane Sue Wilken in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 11077-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average nurse practitioner in 2024
312 Medicare Part D claims for 226 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone52 claims
- Amoxicillin-Clavulanate Potass37 claims
- Doxycycline Hyclate30 claims
- Cefadroxil25 claims
- Nitrofurantoin Mono-Macro23 claims
- Cefdinir19 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 2 group practices
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
- Monument Health Network IncCuster, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Sue Wilken among 3,995 nurse practitioner records in Wisconsin
Diane Sue Wilken, FNP-C is one of 3,995 nurse practitioner records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 74% of them.
- NPI issued2021 · 74% of these records are older, 21% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2021 · median 2017 among the 2,701 with a school on file
- Record last updated2026 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
184 nurse practitioner records list a practice address in Eau Claire
They are 184 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Eau Claire → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Julie Barneson, CRNPEau Claire, WI 547011841297132
- Michelle Brost, APNPEau Claire, WI 547011518978519
- Vicky BuhrEau Claire, WI 547011528182797
- Alice Knutson, NPEau Claire, WI 547011750303137
- Angela Oldenberg, NPEau Claire, WI 547011871795096
- Linda Poirier, RN FNPC APNPEau Claire, WI 547011477606242
- Mary Richbourg, NPEau Claire, WI 547011952400483
- Kristen Sandager, RNC APNPEau Claire, WI 547011447347026
Common questions
What is Diane Sue Wilken, FNP-C's NPI number?
Diane Sue Wilken, FNP-C's National Provider Identifier (NPI) is 1245802032, issued on Jul 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Diane Sue Wilken, FNP-C located?
The NPPES record lists a practice address at 733 W Clairemont Ave, Eau Claire, WI, 54701. Phone: (715) 838-5340. Providers update this record themselves, so call before visiting.
How can I verify Diane Sue Wilken, FNP-C's license?
NPPES lists Wisconsin license number 11077-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Diane Sue Wilken, FNP-C prescribe under Medicare Part D?
In 2024, Diane Sue Wilken, FNP-C had 312 Medicare Part D claims for 226 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.