Nathaniel Fagan-Duerr, MSN, APNP, FNP-C
NPI 1548854755 · Family Nurse Practitioner · Waukesha, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Fagan-Duerr, MSN, APNP, FNP-C is a Family Nurse Practitioner provider in Waukesha, WI (NPI 1548854755).
Provider details
- NPI number
- 1548854755
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, APNP, FNP-C
- Sex
- Male
- Sole proprietor
- No
- License
- 10958-33 (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 tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
608 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 423 | $59 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 77 | $85 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $72 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 21 | $32 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 16 | $43 |
| X-Ray of Chest, 2 Views |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 150 | 15 |
| Amlodipine Besylate | 56 | — |
| Apixabanbrand: Eliquis | 53 | — |
| Allopurinol | 49 | — |
| Furosemide | 41 | — |
| Pantoprazole Sodium | 39 | — |
| Tramadol Hcl | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-02-28
- Last updated
- 2025-11-06
- Certified
- 2025-11-06
Frequently asked questions
- What is Nathaniel Fagan-Duerr's NPI number?
- Nathaniel Fagan-Duerr's National Provider Identifier (NPI) is 1548854755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Fagan-Duerr's specialty?
- Nathaniel Fagan-Duerr is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nathaniel Fagan-Duerr located?
- Nathaniel Fagan-Duerr's practice location on file with NPPES is 725 American Ave, Waukesha, WI 53188-5031.
- What is Nathaniel Fagan-Duerr's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Fagan-Duerr is (262) 928-1000.
- Does Nathaniel Fagan-Duerr accept Medicare?
- Nathaniel Fagan-Duerr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Fagan-Duerr's NPI active?
- Yes — Nathaniel Fagan-Duerr's NPI (1548854755) is active in the NPPES registry as of the last update on 2025-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.