He took postgraduate courses in infant and children's diseases at Charité Krankenhaus in Berlin, Germany in 1914 and at the New York Post Graduate Medical School in 1920.

[4] During his stint in government, he initiated the coordination and regulations of various welfare services including operation of puericulture centers.

He also initiated the development of a children's village called Welfareville in Mandaluyong, Province of Rizal where the government's child-caring institutions were established.

[1] In recognition of his contributions to public health and social welfare, he was appointed delegate of the Philippines to the Second Oriental Conference of the League of Red Cross Societies held in Tokyo, Japan in 1926.

[1] He was the brother of Vicente F. Fabella, considered as the first Filipino certified public accountant, and founder of Jose Rizal University.