Medina was influenced to take up table tennis as a sport by her father who used to compete for the Philippines internationally.

[3] She managed to qualify for a place at the national table tennis team but was later told she could not compete due to her disabilities.

She garnered a silver and bronze in the 2017 Taichung Open in Taiwan securing qualification for the world para championships.

[8] In March 2018, Medina was reportedly training without a coach for about six months until the Asian Para Games in Indonesia due to lack of time.

[4] Medina's father, a former member of the national team, was Josephine's inspiration for taking up table tennis.