"I Don't Need No Doctor" is an R&B song written by Nick Ashford, Valerie Simpson, and Jo Armstead, first recorded by Ray Charles in 1966. Over the years, it has been covered by bands such as garage rock band The Chocolate Watchband in 1969, Humble Pie in 1971, New Riders of the Purple Sage in 1972, metal band W.A.S.P. in 1986, by metal band Great White in 1987, and by the garage punk band The Nomads in 1989. Styx also covered this song. Humble Pie's version became an FM radio hit and reached #73 on the Billboard Hot 100 singles chart. In 2007, John Mayer also covered the song in his live album, "Where the light is" in Los Angeles.

The jazz guitar player John Scofield recorded a version for his album That's What I Say: John Scofield Plays the Music of Ray Charles in 2005, featuring the blues guitarist John Mayer on additional guitar and vocals. Mayer covered the song again with his band during his tour in summer 2007. A recorded live version is also available on his CD/DVD release Where the Light Is. A Ray Charles tribute album also provided the impetus for jazz singer Roseanna Vitro's version – specifically, her 1997 CD, Catchin’ Some Rays: The Music of Ray Charles