Dr. Brosnan graduated from Loyola University Chicago Stritch School of Medicine in 1978 and has been in practice for 40 years. He completed a residency at Loyola University Medical Center. He currently practices at Advocate Medical Group and is affiliated with Advocate Children's Hospital Oak Lawn. Dr. Brosnan accepts multiple insurance plans including Aetna, SIHO Insurance Services and Medicare. In addition to English, Dr. Brosnan's practice supports this language: Spanish.