My Auntie has knee pain and we are unsure if it is simple case of therapy or knee surgery. She called an office, and receptionist gave other Doctors in the practice who are in the network of her insurance. One of Doctors is Desi so naturally her ears perked up. When we see info about him, we see he is not MD, he is DO. What is difference between MD and DO? Do they get board certified, as shown in abms.org? Please guide.