Tammy Johnsen, NP
NPI 1073713913 · Nurse Practitioner · Waukesha, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Johnsen, NP is a Nurse Practitioner provider in Waukesha, WI (NPI 1073713913).
Provider details
- NPI number
- 1073713913
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 209005063 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
18 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
129 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 113 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 16 | $62 |
Typical Medicare-allowed amounts for these services range $62–$102 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 61 | 24 |
| Spironolactone | 50 | 21 |
| Furosemide | 46 | 17 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 44 | 19 |
| Rosuvastatin Calcium | 35 | 13 |
| Apixabanbrand: Eliquis | 31 | 15 |
| Atorvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,140 across 8 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
- 2007-07-19
- Last updated
- 2017-08-22
Frequently asked questions
- What is Tammy Johnsen's NPI number?
- Tammy Johnsen's National Provider Identifier (NPI) is 1073713913, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Johnsen's specialty?
- Tammy Johnsen is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Johnsen located?
- Tammy Johnsen's practice location on file with NPPES is 721 American Ave Ste 403, Waukesha, WI 53188-5071.
- What is Tammy Johnsen's phone number?
- The practice phone number listed in the NPPES registry for Tammy Johnsen is (262) 549-1516.
- Does Tammy Johnsen accept Medicare?
- Tammy Johnsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Johnsen's NPI active?
- Yes — Tammy Johnsen's NPI (1073713913) is active in the NPPES registry as of the last update on 2017-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.