Joseph Abas was married to Catharina Trompetter. He studied medicine in Amsterdam, where he sat for his medical finals on 27 June 1908. He then specialized in obstetrics and gynaecology. He lived at 33 Jan Luykenstraat in Amsterdam and had practices at 97 Sarphatistraat and on the Daniel Willinkplei…
Meer over Catharina Abas-Trompetter en haar dochter Betty is te lezen in het boek van Marijke Barend-van Haeften en Frits Barend: Matzes en mie: De lotgevallen van de families Barend en Van Haeften (Amsterdam 2017) 158.