Karen Ann Williams, APNP
Family Nurse Practitioner · Fond Du Lac, WI
Karen Ann Williams, APNP is a family nurse practitioner with a practice address in Fond Du Lac, Wisconsin, and NPI 1134823479, issued on Mar 29, 2023. Check the license (Wisconsin 13779-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Ann Williams
- Credential
- APNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 13779-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- 421 Camelot Dr, Fond Du Lac, WI 54935
- Phone
- (920) 926-8616
- Enumerated
- Mar 29, 2023
- Record last updated
- Aug 22, 2023
- Fax
- (920) 926-8098
- Medicare enrollment
- Enrolled (PECOS I20230814001994); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →
Also registered at 421 Camelot Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elizabeth Bensen, M.D.Physical Medicine & Rehabilitation Physician1366433435
- Robert Bertram, DPMFoot & Ankle Surgery Podiatrist1578908042
- Ashley Beyer, LATAthletic Trainer1306379433
Verify Karen Ann Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 13779-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average family nurse practitioner in 2024
224 Medicare Part D claims for 119 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 114 claims were for opioids.
Most prescribed
- Oxycodone Hcl97 claims
- Amoxicillin31 claims
- Celecoxib27 claims
- Meloxicam18 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
- Agnesian Healthcare IncFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Ann Williams among 2,814 family nurse practitioner records in Wisconsin
Karen Ann Williams, APNP is one of 2,814 family nurse practitioner records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 78% of them.
- NPI issued2023 · 78% of these records are older, 15% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · median 2019 among the 1,740 with a school on file
- Record last updated2023 · 42% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family nurse practitioner records list a practice address in Fond Du Lac
They are 56 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 2,814 family nurse practitioner records in Wisconsin.
All 2,814 in Wisconsin → Every provider in Fond Du Lac → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Carol Delwiche, FNPFond Du Lac, WI 549351396736948
- Traci Freiberg, APNPFond Du Lac, WI 549351497860563
- Christine Hansen, APNPFond Du Lac, WI 549351508112020
- Dorothy Keenan, NPFond Du Lac, WI 549351518004480
- Heather Kuphal, APNPFond Du Lac, WI 549351083961833
- Rebecca Lentscher, APNPFond Du Lac, WI 549351902174089
- Sonia Miley, NPFond Du Lac, WI 549351861474082
- Stefanie Petrie, APNPFond Du Lac, WI 549351013247931
Common questions
What is Karen Ann Williams, APNP's NPI number?
Karen Ann Williams, APNP's National Provider Identifier (NPI) is 1134823479, issued on Mar 29, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Karen Ann Williams, APNP located?
The NPPES record lists a practice address at 421 Camelot Dr, Fond Du Lac, WI, 54935. Phone: (920) 926-8616. Providers update this record themselves, so call before visiting.
How can I verify Karen Ann Williams, APNP's license?
NPPES lists Wisconsin license number 13779-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Ann Williams, APNP prescribe under Medicare Part D?
In 2024, Karen Ann Williams, APNP had 224 Medicare Part D claims for 119 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.