Arthur Caplan, director of the Center for Bioethics at the University of Pennsylvania in Philadelphia and who studies health policies and ethics, said Tenet has a history of promoting profits over patient care.

CNN: New Orleans hospital operator has checkered past

Simply controlling cases of polio would be more effective than "trying to chase down last marginal cases, which gets enormously expensive, " said Arthur Caplan, director of the Center for Bioethics at the University of Pennsylvania.

CNN: Guinea worm a greater challenge than smallpox

"If you go to the likes of Dr. Zavos, he will give you a dead baby, a defective baby or a deformed baby, " said Art Caplan, director of the Center for Bioethics at the University of Pennsylvania.

CNN: 'Raelian' biochemist insists she will clone human