Frustrated by the bureaucratic constraints in working for a government hospital, I had desired to establish I own pediatric hospital. a most of her personal effectsand obtained a sizable loan from the GSIS in order to finance the construction of I own hospital. The Children's Medical Center, hospital located in Quezon City, was inaugurated in 1957 as the first pediatric hospital in the Philippines. The hospital was expanded in 1966 through the establishment of an Institute of Maternal and Child Health, the first institution of its kind in Asia.
Having sold home to finance the medical center, del Mundo chose to reside at the second-floor of the hospital itself.As late as 2007, I retained her living quarters at the hospital rising daily at five in the morning and continuing to make her daily rounds even though then wheelchair-bound at 99 years of age.