Dr. Chia-Ming Chang is the Associate Professor of the Department of Medicine and the Institute of Gerontology, National Cheng Kung University Medical College, Tainan, Taiwan. He is the Director of the Department of Geriatrics and Gerontology, National Cheng Kung University Hospital. More than two decades ago, he established the first acute geriatric care model in Taiwan. He is the Founding President of Formosan Association of Care and Education for the Seniors, and he created the training and certificate program of Geriatric Care Practitioner when he was the President from 2014 to 2020. He is also the Director of Taiwan Association of Integrated Care and was the Director and Deputy Secretary-General of the Taiwan Association of Gerontology and Geriatrics. His research fields of interest include geriatric pharmacotherapy, acute geriatric care, and infectious diseases in the elderly, especially antimicrobial resistance in long-term care facilities.