Born into a military dependents community, Chang later graduated from the National Defense Medical Center. In 1981 he began serving in Taichung Armed Forces General Hospital (where he continues to see patients to this day despite retiring from the military with the rank of colonel three years ago). In 1988 he spent a year doing advanced study at Johns Hopkins University, the world's leading institution for treatment of spinal problems.
出身於眷村的張國華，畢業自國防醫學院，1981 年就在國軍台中醫院服務，3 年前從上校軍職退役，但仍然留院看診至今；1988 年曾赴全球脊椎治療技術首屈一指的美國約翰霍浦金斯大學醫院進修一年，學習最新技術。