Justen Deal, a project supervisor at Kaiser Permanente's Los Angeles facility, was placed on paid administrative leave after sending the memo.

"I've had access to internal projections that show that we could lose $7 billion over the next two years. Losses of even a fraction of that amount could be destabilizing to the organization," Deal said in a telephone interview. "On Friday I sent an e-mail to my colleagues pointing out the reliability and scalability issues we're facing with our HealthConnect system [Kaiser's name for the Epic system]. The big issue for me are the financial repercussions of trying to launch such an ineffective and inefficient and unreliable system across the organization."

Kaiser spokesman Matthew Shiffgens confirmed that Dodd had resigned and that Deal had been placed on leave.

Although he declined to comment further on the resignation, Shiffgens said Deal was placed on leave because Kaiser has a policy on the use of company assets. Dodd could not be reached for comment.

Bruce Turksta, vice president and program director of HealthConnect, has been named interim CIO.