Former Obama administration official Donald Berwick will run for governor of Massachusetts in 2014, he announced Monday.

"As a doctor, an educator, an innovator and someone who has dedicated his professional career to making things work better and to helping people – I am ready to lead," said Berwick, the former administrator of the Centers for Medicare and Medicaid Services.

Berwick had been exploring a run, so his announcement isn't unexpected. He's not viewed as a candidate with the potential to clear the Democratic field. Reps. Michael Capuano (D) and state Treasurer Steven Grossman (D) are considering entering the race.

Berwick also used his e-mail announcement to encourage support for Rep. Ed Markey (D), the frontrunner in the June 25 Senate special election.

"There will be a time for an announcement tour and traditional campaigning later – but for now, I am encouraging all of my supporters to take another step toward ensuring Massachusetts continues to lead the nation – by doing everything they can to elect my friend Ed Markey to the United States Senate," he wrote.