Explains Mitchell Stickler, M.D., a dermatologist and president of Michelle Soignee and Cape Henlopen & Nanticoke Dermatology in Lewes, Del.: ???In the HMO environment, physicians are having a hard time attracting patients, and dermatologists and plastic surgeons in particular want clients who have a cosmetic concern because then it???s not tied to medical insurance.??? Just collecting payment fro