The Veterans Affairs Department's inspector general has identified 1,700 veterans awaiting medical care at the Phoenix VA hospital but not on an official waiting list.

Acting inspector general Richard Griffin said there was an average wait of 115 days for a first appointment for those who were listed. He concluded that there are "inappropriate scheduling practices" throughout the nationwide VA health care system.

Arizona Sen. John McCain immediately called for VA Secretary Eric Shinseki to resign.

Shinseki called the IG's findings "reprehensible." He said he was directing the Phoenix VA to immediately address each of the 1,700 veterans waiting for appointments.

Dr. Samuel Foote, a former clinic director for the VA in Phoenix who was the first to bring the allegations to light, said the findings were no surprise.