President Donald Trump on Thursday nominated Jerome Adams, a former Indiana health official, to be the next surgeon general.

Adams, an anesthesiologist, had served as the Indiana state health commissioner and was appointed by then-Gov. Mike Pence.

Trump abruptly fired the previous surgeon general Vivek Murthy without explanation. Murthy had been a supporter of Obamacare, an advocate for comprehensive treatment of addiction and had argued for treating gun violence as a public health problem.

Adams has also been on the faculty of the Indiana University School of Medicine and has worked at Eskenazi Health, and he’s been involved in a number of policy initiatives including diversity at the American Society of Anesthesiologists.

The White House included the announcement in a release listing several nominations being sent to the Senate.