Stefan Medina

Medina has been called up by the youth national squads on numerous occasions. In 2009, he was part of the team that finished fourth in the FIFA U-17 World Cup in Nigeria, appearing in two matches. He earned his first cap for Colombia on 10 September 2013 against Uruguay. Medina was regularly called up to the squad after his second cap, but suffered an ankle injury on April 24, 2014, thus forcing him to miss out on the 2014 FIFA World Cup. Medina wasn't called up for the squad again until early 2015, in a friendly against Bahrain and Kuwait, where he played in Colombia's 6–0 victory against Bahrain. In May 2018 he was named in Colombia's preliminary 35 man squad for the 2018 World Cup in Russia. However, he did not make the final cut to 23. He was included in the final cut of the 23-man list for the 2019 Copa America.

Atlético Nacional

A youth product of Nacional's academy, Medina played as a starter in the youth squad for one season before making his senior debut in 2011. Eventually, he gained a spot in the senior squad in 2012 after making occasional appearances. He was given the number 2 shirt in tribute to the late Andrés Escobar, who also wore the same shirt, mostly because he's managed to avoid committing fouls as a defender by making good challenges. He has been likened to the late Nacional legend because of this. Medina finished his career with Nacional in 2014, winning 6 domestic trophies over the course of 4 seasons.

Monterrey

2014–15: Debut season and struggles

On 30 May 2014, the Mexican club Monterrey confirmed the signing of Stefan Medina for the fee of $4,200,000. He made his debut against Leones Negros, stating that while he was pleased with his debut, he still needed more time to fully adapt to Mexican football. He was a regular starter for the team throughout the entire 2014-15 season and was named in the team's starting lineup for the inaugural game at the BBVA Bancomer stadium, although throughout the Apertura 2015 his performance was frequently criticized and he was eventually benched by 18-year old rookie Cesar Montes in the centre-back position.

2016–17: Loan to Pachuca

On 28 November 2015, Rayados de Monterrey announced that Medina had been transferred to Pachuca on a season-long deal, in exchange for Miguel Ángel Herrera.…

Atlético Nacional

Categoría Primera A: 2011-I, 2013-I, 2013-II, 2014-I Copa Colombia: 2012, 2013 Superliga Colombiana: 2012 Pachuca

Liga MX: Clausura 2016 CONCACAF Champions League: 2016–17 Monterrey

Liga MX: Apertura 2019 Copa MX: Apertura 2017, 2019–20 CONCACAF Champions League: 2019, 2021 Individual

Liga MX Best XI: Apertura 2019