David Mas Masumoto was born on 20 January 1954 in California, USA. He has been married to Marcia Thieleke since 7 May 1983. They have two children.

Changing Season: On the Masumoto Family Farm

Huell Howser and David Mas Masumoto in California's Gold (1991)

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"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

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Nikiko Masumoto and David Mas Masumoto in Changing Season: On the Masumoto Family Farm (2015)

David Mas Masumoto

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