Amy Fellenz, DNP
NPI 1619534690 · Nurse Practitioner · Marshfield, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Fellenz, DNP is a Nurse Practitioner provider in Marshfield, WI (NPI 1619534690).
Provider details
- NPI number
- 1619534690
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP
- Sex
- Female
- Sole proprietor
- No
- License
- 9374 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
185 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $52 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 35 | $76 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 27 | $28 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 27 | $62 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 20 | $64 |
| Simple Insertion of Temporary Bladder Tube |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 181 | 53 |
| Methenamine Hippurate | 108 | 20 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 100 | 31 |
| Mirabegronbrand: Myrbetriq | 95 | 17 |
| Solifenacin Succinate | 57 | 19 |
| Finasteride | 55 | 15 |
| Cephalexin | 40 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$74 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-05-24
- Last updated
- 2024-03-25
- Certified
- 2024-03-25
Frequently asked questions
- What is Amy Fellenz's NPI number?
- Amy Fellenz's National Provider Identifier (NPI) is 1619534690, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Fellenz's specialty?
- Amy Fellenz is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Amy Fellenz located?
- Amy Fellenz's practice location on file with NPPES is 1000 N Oak Ave, Marshfield, WI 54449-5703.
- What is Amy Fellenz's phone number?
- The practice phone number listed in the NPPES registry for Amy Fellenz is (715) 207-8691.
- Does Amy Fellenz accept Medicare?
- Amy Fellenz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Fellenz's NPI active?
- Yes — Amy Fellenz's NPI (1619534690) is active in the NPPES registry as of the last update on 2024-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.