SAN FRANCISCO — As they duck in and out of investor meetings and company presentations, healthcare executives at the JPMorgan Healthcare Investor Conference are keeping a close eye on Obamacare repeal discussions in Washington.

William Carpenter, chief of executive of Lifepoint Health, said his company’s lobbyists were texting him Wednesday morning about support for a three-point plan released by Sen. Lamar Alexander, which calls for repealing and replacing the law simultaneously.