What is Tammy Johnsen's specialty?

Tammy Johnsen (NPI 1073713913) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Waukesha, WI.

Where does Tammy Johnsen practice?

Tammy Johnsen practices in Waukesha, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1073713913.

How much does Medicare pay Tammy Johnsen?

Tammy Johnsen (NPI 1073713913) received approximately $10K in total Medicare Part B payments, serving 99 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1073713913

Tammy JohnsenNP

Nurse PractitionerWaukesha, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

129

Distinct HCPCS

Medicare payment

$9K

Peer benchmark

Total Medicare services vs. 4,237 Nurse Practitioner providers in WI — below median (cohort median 212).

PRESCRIBING · PART D · 2024

Total Rx claims

388

Beneficiaries

—

Total drug cost

$61K

Distinct drugs

Brand share

25.0%

Top prescribed drugs

Metoprolol Succinate61 claims

Spironolactone50 claims

Furosemide46 claims

Clopidogrel Bisulfate44 claims

Rosuvastatin Calcium35 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$380

Payment records

By payment type

Food and Beverage$380

Top paying entities

Food and Beverage$380

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 520008

Hospital

CCN 520062

Hospital

REFERRAL NETWORK

Where Tammy Johnsen's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 5 inbound referrers · 9 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
EDWARD HOSPITAL	49	117
Chris Geannopoulos Cardiology · Naperville, IL	16	27
Mark Ottolin Internal Medicine · Naperville, IL	15	25
Amaar Malik Diagnostic Radiology · Naperville, IL	11	31
Sujith Kalathiveetil Cardiology · Naperville, IL	11	38

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Laboratory Corporation Of America Holdings Clinical Laboratory · Dublin, OH	78	167
Steven Lieberman Cardiology · Elmhurst, IL	49	104
EDWARD HOSPITAL	47	98
Evans Pappas Cardiology · Naperville, IL	38	69
Chris Geannopoulos Cardiology · Naperville, IL	18	40
CLINE, SHARON	15	22
Sujith Kalathiveetil Cardiology · Naperville, IL	13	16
Laboratory Corporation Of America Clinical Laboratory · Itasca, IL	11	18
Mark Ottolin Internal Medicine · Naperville, IL	11	25

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events