Most programs have now changed to the Masters level, though there are still some Bacheloriate degree and lower level programs. As far as 'Content', they are basically the same. Clinical experience is key to your application. The undergraduate 'degree' you get,Pre-requisites aside, is not as important (Unless you are lacking in clinical experience). Pre-requisites are similar, but you must contact individual schools for their exact list. The best place to start on DD is
http://www.aapa.org/.