Last Year's Rank: 7
Offers medical imaging, laboratory diagnostics, medical IT, and hearing aids, for the entire range of patient care.
HIT Revenue: $1,991,000,000
Location: Malvern, PA
Executives: Michael Reitermann, CEO
M&A: Cerner acquired Siemens' health IT business for $1.3 billion in a deal that closed in February, 2015.
* Industry analysts' estimates