SAN FRANCISCO — As Republicans push forward on repealing health reform, planning the law’s demise, a different conversation is happening among thousands of health care investors gathered in San Francisco for this week’s J.P Morgan Health Care Conference: how to capitalize on health reform’s new business opportunities.

The Congressional Budget Office estimates 32 million Americans will gain health insurance by 2019 if the law stands. For health insurers, that represents a potential boon for both their individual market business as well as in the Medicaid market, where states regularly contract with private insurers to manage care.

‘The worst is behind them,