He studied medicine in Toulouse, afterwards serving as an interne at the Hôpital Lourcine in Paris. He successively worked at the Bicêtre, Hôpital Tenon and Hôpital Saint-Louis. At the Hôpital Beaujon he was appointed director of urology. Bazy was a member of the Académie de Médecine and the Académie des Sciences (1921).
A specialist in genitourinary medicine, he is credited with coining the term uretéro-cysto-néostomie (today known as ureteroneocystostomy) for surgery involving implantation of the upper end of a transected ureter into the bladder. Bazy was a proponent of preventive serotherapy for treatment of tetanus.
- Atlas des maladies des voies urinaires, with Félix Guyon (1831–1920).
- De l'uretéro-cysto-néostomie (1894)
- Maladies des voies urinaires (1896–1901); multi-volume.
- Contribution à la chirurgie de l'uretère. De l'uretéro-pyélo-néostomie (1897)
- La Serotherapie dans le tetanos (1914)
- Urologie pratique, (second edition- 1930).
- IDREF.fr (biography and bibliography)