2 Facebook
Facebook, for the most part, has been less involved in the health technology sector than Apple, Alphabet or Microsoft. But Facebook, primarily a social media company, is still involved in health care in the U.S.
Last year, Facebook made a bid to make pharmaceutical ads on its platform more attractive for drug makers.
As far as first-party initiatives, the company has been using its Oculus division to develop virtual reality simulations that could train pediatric doctors through emergency scenarios.