The state did not err in barring an Aurora-based doctor from participating in a Medicaid program for a year, a state appeals panel ruled Friday.Dr. Gowhar Khan, a physician and surgeon who specializes in rheumatology, sought to reverse his one-year suspension from participating in the Illinois Medical Assistance Program after the Illinois Department of Healthcare and Family Services found he provided grossly inferior care, risked harming his patients and gave patients unnecessary treatments.But the 1st District Appellate …