Patrick Simmons is an American musician best known as a member of the rock band The Doobie Brothers. He has been a consistent member since the group's inception in 1970, contributing significantly to their signature blend of rock, soul, and folk music. Simmons is recognized for his distinctive finger-picking guitar style and is the writer of the band's first #1 record, "Black Water". His contributions have been instrumental in The Doobie Brothers' enduring impact on American rock music.