The FBI is apparently investigating allegations that a Maryland cardiologist, Dr. John “Jack” McLean was performing unnecessary stent implantations on his patients. Officials have stated that most of the patients involved are Medicare patients. On average, Medicare pays between $11,184 to $14,287 for a drug-eluting stent procedure. The investigation which involves the FBI as well as the Health and Human Services involves whether the procedures were medically necessary and whether alternative methods could have been used to treat blood clots. Dr. McLean has stated that he has done no wrong and none of his patients are complaining.