Genna Tonstad, APNP
NPI 1386421279 · Nurse Practitioner · Madison, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Genna Tonstad, APNP is a Nurse Practitioner provider in Madison, WI (NPI 1386421279).
Provider details
- NPI number
- 1386421279
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 14046 (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
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
493 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 229 | $101 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 158 | $61 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 28 | $103 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 20 | $149 |
| Residence Visit for New Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99344 | 17 | $113 |
| Removal of Impacted Ear Wax69210 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 73 | 17 |
| Amlodipine Besylate | 59 | — |
| Duloxetine Hcl | 59 | — |
| Lisinopril | 57 | — |
| Atorvastatin Calcium | 48 | — |
| Losartan Potassium | 47 | — |
| Apixabanbrand: Eliquis |
Practice location
Mailing address
Additional practice locations (1)
- 1360 Pabst Farms CircleSte BOconomowoc, WI 53066-4854Phone: (888) 938-3838Fax: (888) 919-1083
Registry dates
- Enumerated
- 2023-09-13
- Last updated
- 2024-08-14
- Certified
- 2024-08-08
Frequently asked questions
- What is Genna Tonstad's NPI number?
- Genna Tonstad's National Provider Identifier (NPI) is 1386421279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Genna Tonstad's specialty?
- Genna Tonstad is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Genna Tonstad located?
- Genna Tonstad's practice location on file with NPPES is 4781 Hayes Rd Ste 101, Madison, WI 53704-7343.
- What is Genna Tonstad's phone number?
- The practice phone number listed in the NPPES registry for Genna Tonstad is (888) 938-3838.
- Does Genna Tonstad accept Medicare?
- Genna Tonstad is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Genna Tonstad's NPI active?
- Yes — Genna Tonstad's NPI (1386421279) is active in the NPPES registry as of the last update on 2024-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.