Skip to main content

Dr. Horwitz is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. Horwitz's full profile

Already have an account?

Education & Training

  • University of Illinois College of Medicine at Chicago
    University of Illinois College of Medicine at ChicagoFellowship, Rheumatology, 1986 - 1987
  • University of Illinois College of Medicine at Chicago
    University of Illinois College of Medicine at ChicagoResidency, Internal Medicine, 1983 - 1986
  • University of Illinois College of Medicine
    University of Illinois College of MedicineClass of 1983

Certifications & Licensure

  • IL State Medical License
    IL State Medical License 1985 - 2026
  • MI State Medical License
    MI State Medical License Active through 2013
  • WI State Medical License
    WI State Medical License 1999 - 2011
  • American Board of Internal Medicine Internal Medicine