NPPES file of Aug 9, 2026

Brandon Dillenback, FNP

Nurse Practitioner · Fond Du Lac, WI

Brandon Dillenback, FNP is a nurse practitioner with a practice address in Fond Du Lac, Wisconsin, and NPI 1275088072, issued on Aug 22, 2016. Check the license (Wisconsin 14338-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275088072
Name
Brandon Dillenback
Credential
FNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
14338-33 WI
Self-reported in NPPES; status is on the state search
Practice location
420 E Division St, Fond Du Lac, WI 54935
Phone
(920) 926-8573
Enumerated
Aug 22, 2016
Record last updated
Aug 3, 2023
Fax
(920) 926-8923
Medicare enrollment
Enrolled (PECOS I20231013001688); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 420 E Division St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Berenz, FNP-BCFamily Nurse Practitioner1619386885
  2. Melissa Berggren, PA-CPhysician Assistant1639377617
  3. Louann Biddick, NPNurse Practitioner1770566721
  4. Jennifer Bissell, MDFamily Medicine Physician1316146962
  5. Tiffany Boelk, APNPNurse Practitioner1700459690
  6. David Bowman, M.D.Cardiovascular Disease Physician1962492397

Verify Brandon Dillenback in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 14338-33    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

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2.3 times the Medicare Part D claims of the average nurse practitioner in 2024

2,553 Medicare Part D claims for 275 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 49 claims were for opioids.

  1. Brandon Dillenback2,553
  2. Specialty average1,109

Most prescribed

  1. Losartan Potassium138 claims
  2. Omeprazole135 claims
  3. Rosuvastatin Calcium126 claims
  4. Atorvastatin Calcium118 claims
  5. Amlodipine Besylate86 claims
  6. Levothyroxine Sodium86 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

  1. Agnesian Healthcare IncWaupun, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

60 nurse practitioner records list a practice address in Fond Du Lac

They are 60 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 3,995 nurse practitioner records in Wisconsin.

All 60 in Fond Du Lac → All 3,995 in Wisconsin → Every provider in Fond Du Lac →

Other nurse practitioner records in Wisconsin

  1. Caroline Aaberg, APNPMadison, WI1881384394
  2. Joyce Abbott, APNPOshkosh, WI1003824665
  3. Mohamed Abdelazim, APNPAppleton, WI1760266696
  4. Jacklyn Abel, AGACNP-BCMauston, WI1104631506
  5. Henrietta Abili, APNPGermantown, WI1174859524
  6. Jade Abts, NPGreen Bay, WI1992293708
  7. Karalyn Adam, DNP, RNMarshfield, WI1780933051
  8. Carol Adamczyk, MSNWauwatosa, WI1457502395
  9. Amanda Adams, NPMadison, WI1023366598
  10. Bernadette Adams, FNPWestby, WI1427047620

Common questions

What is Brandon Dillenback, FNP's NPI number?

Brandon Dillenback, FNP's National Provider Identifier (NPI) is 1275088072, issued on Aug 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Brandon Dillenback, FNP located?

The NPPES record lists a practice address at 420 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 926-8573. Providers update this record themselves, so call before visiting.

How can I verify Brandon Dillenback, FNP's license?

NPPES lists Wisconsin license number 14338-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Brandon Dillenback, FNP prescribe under Medicare Part D?

In 2024, Brandon Dillenback, FNP had 2,553 Medicare Part D claims for 275 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.