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Dr. Brennan is on Doximity

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Education & Training

  • University of Wisconsin Hospitals and Clinics
    University of Wisconsin Hospitals and ClinicsResidency, Internal Medicine, 1968 - 1971
  • Bayfront Health St Petersburg
    Bayfront Health St PetersburgInternship, Transitional Year, 1967 - 1968
  • University of Wisconsin School of Medicine & Public Health
    University of Wisconsin School of Medicine & Public HealthClass of 1967

Certifications & Licensure

  • WI State Medical License
    WI State Medical License 1968 - 2025
  • MN State Medical License
    MN State Medical License 1974 - 2020
  • IA State Medical License
    IA State Medical License 1990 - 1996
  • American Board of Internal Medicine Internal Medicine

Hospital Affiliations