Green’s Dictionary of Slang

(US prison) any generally antagonistic or unhelpful doctor.

1968		J. Alard He who Shoots Last Preface: These tough boys (the Tracs) are stripped, booted and bashed until their bowels work. Hence there are absolutely no requests for Ford Pills.
2000		Other Side of the Wall: Prisoner’s Dict. July 🌐 Ford: ‘Found On Run Dead.’ This started because of a particularly bad doctor named Ford. It grew to mean any generally antagonistic or unhelpful doctor. (TX).