From here, Verbier is just 20 minutes away, by bus or cable car, at the same fare.
The cable car takes you straight to Médran, while the bus drops you off at Station Poste, right on the central square. The bus is free for ski pass holders on the same day, when the cable car is also operating. All bus information is available here.
The cable car runs continuously from 5:10 am to 11:55 pm, just like public transport. GA and Half-Fare Travelcards are valid. Buy your ticket here.