I don't recall Peter Benton being a DO. He said he was AOA. That is...Alpha Omega Alpha, the national medical school honor society. Is there any evidence of him being a DO? I haven't found any yet, though I thought he was a DO at one time too. I DO recall him saying to someone how he busted his butt to get into a top med school, but to eventually find out he was accepted only to fulfill a racial quota.