Rebecca Deffner, NP
NPI 1578819256 · Family Nurse Practitioner · Mosinee, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rebecca Deffner, NP is a Family Nurse Practitioner provider in Mosinee, WI (NPI 1578819256).
Provider details
- NPI number
- 1578819256
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 2012007838 (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
13 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
651 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 119 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 117 | $103 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 102 | $73 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 66 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 51 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 220 | 59 |
| Amlodipine Besylate | 160 | 42 |
| Levothyroxine Sodium | 148 | 33 |
| Omeprazole | 125 | 38 |
| Lisinopril | 101 | 32 |
| Rosuvastatin Calcium | 97 | 30 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-07-31
- Last updated
- 2012-07-31
Frequently asked questions
- What is Rebecca Deffner's NPI number?
- Rebecca Deffner's National Provider Identifier (NPI) is 1578819256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rebecca Deffner's specialty?
- Rebecca Deffner is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rebecca Deffner located?
- Rebecca Deffner's practice location on file with NPPES is 1881 County Trunk Xx, Mosinee, WI 54455.
- What is Rebecca Deffner's phone number?
- The practice phone number listed in the NPPES registry for Rebecca Deffner is (715) 355-4040.
- Does Rebecca Deffner accept Medicare?
- Rebecca Deffner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rebecca Deffner's NPI active?
- Yes — Rebecca Deffner's NPI (1578819256) is active in the NPPES registry as of the last update on 2012-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.