On February 1902, an 8-bed hospital called the Baguio Sanitarium - with a pioneering staff composed of American physicians, army nurses and hospital corpsmen headed by Dr. J. B. Thomas - was established. It was set up as part Bureau of Civil Hospitals and Sanitarium of the Philippines primarily to serve the health needs of government officials, employees and American soldiers on vacation amidst pine trees in the cool climate of Baguio. A month later, the construction of a 15-bed capacity hospital consisting of six, three-room cottages was started.

Through the years and through the help of a lot of changes, to wit: its Filipinization in 1915 when it was turned over to the Bureau of Health; the establishment of a School of Nursing with nine native students in 1923; the construction of a new hospital from 1937 to 1941; its transfer to the Saint Louis High School and temporary closure during the Second World War; its reconstruction with the help of Americans in 1948; the opening of the 35-bed Contagious Diseases Pavilion in 1952; the induction of the first BGH Advisory Board of Officers in 1955; its designation as and accreditation as one of the eleven training hospitals in the Philippines by the Philippine Medical Association and the Philippine College of Surgeons in 1958; its development into 400-bed capacity Medical Center and expansion of services cope with the needs of the people of Baguio from the 1960's to the 1980's; the demolition of the Nurses Home and other hospital buildings due to damages caused by killer earthquake in 1990 that leveled many buildings in the city; its receipt of the international Baby Friendly Hospital Award from UNICEF; the mandate to function as a Center of Wellness with Preventive,

Promotive and Primary Health Care programs aside from curative, training and research functions in 1993; the theft and recovery - through ransom payment - of its reassured Amorsolo painting in 1998 and its conservation and restoration in 2001; and the construction of additional buildings in 2001.
After 100 years. The Baguio General Hospital & Medical Center hopes to continue its mission, "To provide comprehensive quality health care, training and research."

Today, its 695 dedicated and committed personnel envision the hospital to be a model people oriented Medical Center. There is no chance for failure. For 100 years, the hospital has exerted its very best to deliver the best quality patient care and services.