PCOM does it through St Josephs University(about a mile up the road). You apply for the program about halfway through your first year, if accepted(You need to have a certain GPA and MCAT to be considered). The reason they look at the MCAT is because most people don't have a GRE score.
You do your first year normally. You take classes the summer between M1-M2. Your second year is stretched over two years. You take all normal classes except OMM, and Primary Care Skills(our physical exam class) in addition to night courses at St Joes. With the curriculum like that, you can still take boards with your class at the end of your second year since you will have had all of the classes on the COMLEX with the exception of some OMM that I'm sure you can study on your own. Your third year you finish the OMM and Primary Care Skills continue with MBA courses, get your MBA, then start clinicals and graduate with your DO after 5 total.