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Dr. Julia L. Thorsen, M.D.

Allergy & Immunology (Allergy & Immunology Physician)

  • Medicare participating

At a glance

Years since graduation
15
In the NPI registry since
2015
Medicare patients seen, 2024
155

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2011Medical school: University of Wisconsin School of Medicine
  • 2015Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Allergy & Immunology Physician primary
    WI license 68894-20

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Allergy & Immunology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
155
Services billed
9,838
Patients’ average age
70
Most frequent Medicare services, 2023
ServiceTimesPatients
Test for allergy using allergenic extract30113
Professional service for multiple injections of allergen7911
Injection of drug or substance under skin or into muscle3911
Established patient office or other outpatient visit, 30-39 minutes3530
Test to measure expiratory airflow and volume3329
Test to measure the level of nitric oxide gas2522
Established patient office or other outpatient visit, 40-54 minutes1817
Insertion of needle into vein for collection of blood sample1514
New patient office or other outpatient visit, 45-59 minutes1212
New patient office or other outpatient visit, 60-74 minutes1111

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Allergy & Immunology clinicians in Madison

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 29, 2020), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1023402153. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.