NPPES file of Aug 9, 2026

Margaret Mary Mussfeldt, APNP

Family Nurse Practitioner · Shell Lake, WI

Margaret Mary Mussfeldt, APNP is a family nurse practitioner with a practice address in Shell Lake, Wisconsin, and NPI 1376360610, issued on Sep 25, 2024. Check the license (Wisconsin 16574-33, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1376360610
Name
Margaret Mary Mussfeldt
Credential
APNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
16574-33 WI
Self-reported in NPPES; status is on the state search
Practice location
113 4TH Ave, Shell Lake, WI 54871
Phone
(715) 468-2711
Enumerated
Sep 25, 2024
Record last updated
Jan 19, 2026
Fax
(715) 468-2727
Medicare enrollment
Enrolled (PECOS I20260401000744); 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.
Download card Updates feed

8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →

Also registered at 113 4TH Ave

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

  1. Joel Anderson, PTPhysical Therapist1316905482
  2. Alexander Eggen, DPTPhysical Therapist1003474065
  3. Sara Olson, APRNFamily Nurse Practitioner1699443424
  4. Catherine Reuter, MDPediatrics Physician1841201027

Verify Margaret Mary Mussfeldt 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 16574-33    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Indianhead Medical Center Shell Lake, Inc.Shell Lake, WI

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

Margaret Mary Mussfeldt among 2,814 family nurse practitioner records in Wisconsin

Margaret Mary Mussfeldt, 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 2024, is newer than 85% of them.

  • NPI issued2024 · 85% of these records are older, 10% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2024 · median 2019 among the 1,740 with a school on file
  • Record last updated2026 · 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).

4 family nurse practitioner records list a practice address in Shell Lake

They are 4 of the 45 NPPES records with a practice address in Shell Lake, and 2,814 family nurse practitioner records in Wisconsin.

All 2,814 in Wisconsin → Every provider in Shell Lake → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Eydie Farrow, APNPShell Lake, WI 548711487652772
  2. Sara Olson, APRNShell Lake, WI 548711699443424
  3. Terry Weinert, APRNShell Lake, WI 548711467965988
  4. Sabrina Bach, FNPRice Lake, WI 548681194554600
  5. Megan CossRice Lake, WI 548681942176839
  6. Jamie Gohde, FNPRice Lake, WI 548681306434246
  7. Kayla JennessRice Lake, WI 548681114578457
  8. Elizabeth Marcoux, FNPRice Lake, WI 548681679079859

Common questions

What is Margaret Mary Mussfeldt, APNP's NPI number?

Margaret Mary Mussfeldt, APNP's National Provider Identifier (NPI) is 1376360610, issued on Sep 25, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Margaret Mary Mussfeldt, APNP located?

The NPPES record lists a practice address at 113 4TH Ave, Shell Lake, WI, 54871. Phone: (715) 468-2711. Providers update this record themselves, so call before visiting.

How can I verify Margaret Mary Mussfeldt, APNP's license?

NPPES lists Wisconsin license number 16574-33, 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.

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.