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Dr. Joel S. Klein joined Allergy and Asthma Consultants, Ltd. in July 2008. A native of Chicago, he received his B.A. from Northwestern University, M.S. from University of Illinois-Urbana and M.D. from University of Health Sciences/The Chicago Medical School. His residency training in internal medicine was at Rush-Presbyterian-St. Luke’s Medical Center. Dr. Klein’s training in adult and pediatric allergy/immunology was a 3-year fellowship at Mayo Clinic during 1992-1995. Since 1995, he has been in clinical practice in the north suburban Chicago area.