SSDI Social Security Disability my husband got a letter that he needs to see Dr

United States
February 14, 2009 9:16pm CST
My husband is fighting to get ssdi, he has been sick and out of work for 3 years now. He had to reapply for disability because his first claim was sent to the appeals council. On this new application it has been a few months and today we received a letter that he will have to go see there doctor for a physical exam and a mental exam. Does everyone that applies for disability have to go and do this exam? What does this mean exactly? How long after having the exams will we have to wait to hear if he has been approved?