Washington law firms are reassessing how they structure their health care lobbying practices this year, as the industry expands to implement the Affordable Care Act and the government continues to tinker with Medicare.

McDermott Will & Emery, which has one of the largest health law practices in the country, announced last week that it would move its five health care nonlawyer consultants and tie lobbyist-lawyers to a new subsidiary, McDermott+Consulting. In 2013, more than half of the firm’s $5.7 million in lobbying revenue related to health care, according to federal disclosures.