Amy Fellenz, DNP
Nurse Practitioner · Marshfield, WI
Amy Fellenz, DNP is a nurse practitioner with a practice address in Marshfield, Wisconsin, and NPI 1619534690, issued on May 24, 2019. Check the license (Wisconsin 9374, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amy Fellenz
- Credential
- DNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 9374 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 207-8691
- Enumerated
- May 24, 2019
- Record last updated
- Mar 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20190814000866); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
Also registered at 1000 N Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sheetal Aatrai, MDInternal Medicine Physician1417568965
- Sukaina AbbasPediatrics Physician1407529191
- Chady Abboud Leon, M.D.Hematology & Oncology Physician1770737744
- Ihab Abdalrahman, MDHospitalist Physician1497855134
- Raquel Abengozar Mingorance, MDStudent in an Organized Health Care Education/Training Program1609437755
- Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574
Verify Amy Fellenz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 9374Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average nurse practitioner in 2024
919 Medicare Part D claims for 201 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Tamsulosin Hcl181 claims
- Methenamine Hippurate108 claims
- Oxybutynin Chloride Er100 claims
- Myrbetriq95 claims
- Solifenacin Succinate57 claims
- Finasteride55 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $74.40
3 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Fellenz among 3,995 nurse practitioner records in Wisconsin
Amy Fellenz, DNP 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 2019, is newer than 65% of them.
- NPI issued2019 · 65% of these records are older, 30% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2019 · median 2017 among the 2,701 with a school on file
- Record last updated2024 · 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).
55 nurse practitioner records list a practice address in Marshfield
They are 55 of the 1,360 NPPES records with a practice address in Marshfield, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Marshfield → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Christine Bakke, NPMarshfield, WI 544491205941788
- Judith Bentley, NPMarshfield, WI 544491992778419
- Rob Bohl, NPMarshfield, WI 544491982714168
- Jennifer Clements, NPMarshfield, WI 544491699885764
- Jessica Geiger, NPMarshfield, WI 544491801902580
- Mary Hytry Karl, NPMarshfield, WI 544491659489912
- Karen Lapp, NPMarshfield, WI 544491821108002
- Laurie Meyer, NP CDEMarshfield, WI 544491770695025
Common questions
What is Amy Fellenz, DNP's NPI number?
Amy Fellenz, DNP's National Provider Identifier (NPI) is 1619534690, issued on May 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Amy Fellenz, DNP located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 207-8691. Providers update this record themselves, so call before visiting.
How can I verify Amy Fellenz, DNP's license?
NPPES lists Wisconsin license number 9374, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Amy Fellenz, DNP prescribe under Medicare Part D?
In 2024, Amy Fellenz, DNP had 919 Medicare Part D claims for 201 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Amy Fellenz, DNP's MIPS final score?
The 2023 MIPS final score is 78.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.