DETROIT — Beaumont Health System, Botsford Health Care and Oakwood Healthcare have reached a definitive agreement to combine their operations into a new $3.8 billion health care organization following unanimous approval by their boards.

Beaumont Board Chair Stephen Howard, Botsford Trustee Chair Gerson Cooper and Oakwood Board Chairman John Lewis said the agreement reflects their organizations’ common vision to remain leaders in providing high-quality, high-value, not-for-profit health care and their mission of community service.

Under the terms of the definitive agreement, the three organizations are creating a new, not-for-profit Michigan health system called Beaumont Health. The Beaumont Health name was chosen to demonstrate the new system’s focus on health and wellness and was based on independent market research showing the regional and national strength of the new name. The name also has historical ties to pioneering Michigan physician and medical researcher, Dr. William Beaumont, whose medical research and innovations are recognized globally.

The three organizations announced a letter of intent on March 21 to integrate their combined eight hospitals and 153 other patient care sites into a new comprehensive, collaborative health system focused on advancing quality and access to care throughout the region.

“While Botsford and Oakwood have outstanding names and brands in their primary communities, we chose the name ‘Beaumont Health’ because of its recognition and strength throughout all of Southeast Michigan and on a national level,” said Lewis, who will be the future chair of the Beaumont Health board. “The new health system will be a national model and the name paves the way for an even stronger national voice in the future of health care delivery. And the word ‘health’ represents our combined goal of improving the health of individuals, families and employers in the communities we serve.”

The new Beaumont Health organization will have eight hospitals with 3,337 beds, 153 outpatient sites, 5,000 physicians, 33,093 employees and 3,500 volunteers. The hospitals include:

Beaumont Hospital, Royal Oak; Beaumont Hospital, Troy; and Beaumont Hospital, Grosse Pointe

Botsford Hospital, Farmington Hills

Oakwood Hospital-Dearborn; Oakwood Hospital-Southshore; Oakwood Hospital-Taylor; and Oakwood Hospital-Wayne

The names of the eight individual hospitals will be linked with the Beaumont Health name and brand in a manner to be determined over time.