Basil of Ancyra was a 4th-century ἱατρός and bishop of Ancyra. This site groups him under medicine because contemporary historians also call him a physician. They do not transmit a medical book of his. He died around 364 CE.
What this site holds is the Greek treatise On Virginity. It is an ascetic book addressed among bishops, not a medical handbook.
The medical practice is unreported. The surviving Greek is the virginity treatise.
Available Works
On Virginity
Περὶ Παρθενίας
103 passages
Also published as PDF.