A beloved Somerville family doctor has dropped a bombshell on his patients by revealing he is transsexual and will begin seeing patients as a woman. “After almost 18 years of practicing medicine in Davis Square, I am looking forward to many more years as your family physician. There will be only one major change that will occur in July - I will begin practicing medicine as a woman,” Dr. Roy Berkowitz-Shelton wrote in a letter to patients. Berkowitz-Shelton, the married father of two, said in the letter that he will return from a hiatus “to live my life as I...