Not raised as an observant Jew, Tatz discovered Orthodox Judaism in adulthood and became a baal teshuva.

He is currently on staff at the Jewish Learning Exchange[2] and Ohr Somayach,[6] and in the past has been a guest lecturer at Gateways.

[7] Rabbi Tatz gives lectures to Jewish student groups and organisations across the UK, including an annual medical ethics lecture at University College London hosted by both the Jewish Society and Medical Ethics Society.

Zoketsu Norman Fischer, former abbot of the San Francisco Zen Center and founder of and teacher at the Everyday Zen Foundation, describes Tatz's work, Letters to a Buddhist Jew, as "a fascinating book - the most serious contribution in this field to date.

[9] He is also involved with the Jerusalem Center for Research in Medicine and Halacha, often speaking at its annual European events.