Few physicians throw themselves into sales more enthusiastically than Dr. David Louise Matlock. Matlock, an OB/GYN who says he makes $12 million a year, appears frequently on the E! network, owns stock options in a company making lasers he uses and is marketing a reality TV show starring himself. Some colleagues admire his drive and ingenuity. But his approach, which includes aggressive, hyped-up Web marketing, has taken fire from some members of medical community, who see his practices as ethically questionable. Article