Kevin Lenahan. Senior Vice President and Chief Finance and Administrative Officer of Atlantic Health System (Morristown, N.J.). Mr. Lenahan joined Atlantic Health System in 1995. He was named vice president of finance and CFO in June 2010 and then promoted to his current role in December 2015. Mr. Lenahan developed Atlantic Health System's first risk-based contract, which took effect in 2015, and led the team to develop the system's ACO, which was the first in New Jersey