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Dr. Hahnel is on Doximity

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Education & Training

  • McGaw Medical Center of Northwestern University
    McGaw Medical Center of Northwestern UniversityResidency, Internal Medicine, 1973 - 1974
  • McGaw Medical Center of Northwestern University
    McGaw Medical Center of Northwestern UniversityResidency, Internal Medicine, 1971 - 1973
  • Northwestern University The Feinberg School of Medicine
    Northwestern University The Feinberg School of MedicineClass of 1968

Certifications & Licensure

  • IL State Medical License
    IL State Medical License 1971 - 2014