The cast of characters involved in Charlie Sheen’s much-publicized trip to the emergency room Thursday keeps getting stranger: After allegedly partying into the wee hours with five girls, including 22-year-old porn star Kacey Jordan, neighbors and Real Housewives of Beverly Hills stars Dr. Paul Nassif and wife Adrienne Maloof-Nassif received a call from Sheen’s residence "asking for medical assistance and advice,” the couple told People magazine. Dr. Nassif dialed 911, and an ambulance promptly appeared at Sheen's house. The troubled actor was rushed to the hospital on Thursday morning for serious stomach pains, reportedly connected to an old hernia injury and exacerbated when he laughed too hard while watching TV—though reports of a nearby “briefcase” of cocaine have also surfaced. "As longtime friends, we are obviously very concerned about his well-being," said his Real Housewives neighbors. "Our thoughts and prayers are with him and his family right now and we wish him a speedy recovery."