Chestatee Regional Hospital in Dahlonega, Ga., has named Jason Cox as CEO, according to an Access North Georgia report.

Becker's Hospital Review is pleased to recognize the talent and drive of 25 men and women who, before the age of 40, have come to hold executive positions within their hospital or health system. Many of these leaders hold records as the youngest executives to be appointed at their respective organizations. Others have spearheaded hospital initiatives and worked determinedly to strengthen their organizations. Given what they've accomplished before the age of 40 and in the midst of healthcare reform, these men and women are likely to achieve great things throughout their careers.

As some states challenge the Affordable Care Act in court, others are pushing implementation of regulations under the federal reform law. The healthcare industry in 2011 is a fragmented and fascinating place. Here are 40 people who have been instrumental in shaping healthcare policy, trends and debate over the last year.