Peter was a doctor at Shulman and Associates. Peter and Mindy become close friends prior to him moving to Texas with his ex-girlfriend and her son. He is Mindy's OB/GYN and he is the one who finds out she's pregnant in No More Mr. Noishe Guy, episode 14 of season 3.
Peter marries Lauren in the season 3 finale, Best Man. He asks Mindy to be his best man. However, because of Mindy's pre-eclampsia, she is unable to go to the wedding and Dr. Jeremy Reed fills in as Peter's best man, much to the chagrin of Morgan.
- Peter studied at Dartmouth, where he was nicknamed "Lefty", as shown in the episode "The Devil Wears Lands' End"
- Peter has a dog named Nicole, who he once spray painted green
- Peter once had sex with a Christmas tree at a Christmas party