His father, Raden Rangga Wiradikarta, was wedana ("subdistrict head") of Majalaya south of Bandung, and belonged to the Sundanese nobility, as did his mother.

[3] From 1951 to 1954, he was head of the Landskoepokinrichting, which was renamed (1950–60) Pasteur Institute of Indonesia, and then (1960) became the state-owned pharmaceutical company PT Bio Farma.

[note 1][5] In 1956, Djoehana was appointed vice-president of the foundation in charge of setting up a faculty of medicine at Padjadjaran University, of which he became the first dean (1957–1962).

[6] In 1957, he became the first native Indonesian to hold the position of dean, Faculty of Sciences, University of Indonesia in Bandung, replacing Dutch Professor H. Th.

This faculty was the last in Indonesia to still be headed by somebody from the Nederlands, because of difficulties in finding a qualified person required during the initial years of independence.