"Dr. John E. Croghan earned his medical degree from Rush Medical College and completed his residency in Internal Medicine at Loyola University Medical Center. He completed his first fellowship in Geriatric Medicine at the Johns Hopkins University School of Medicine, and a second fellowship in Rheumatology at George Washington University Medical Center.
Dr. Croghan is triple board certified by the American Board of Internal Medicine, Rheumatology and Geriatric Medicine."
