The PPS – Negros Occidental Chapter was founded in 1971 with Dr. Salud Javelosa as its founding President. It was composed of 5 PPS members. Back in 1976, PPS members from Panay Island joined the PPS – Negros Occidental Chapter hence the name was changed to PPS – Negros Occidental Western Visayas Chapter. In 2016 with the advent of the One Island – One Region concept, PPS Negros Occidental left the Western Visayas group and formed the PPS Negros Island Chapter. In 2018 the name PPS Negros Island Chapter was reverted to PPS Negros Occidental Chapter. To date the chapter has 109 members.