You can watch Doctor Who on several streaming platforms depending on the season and region:

• Disney+ offers the latest seasons of Doctor Who, including the 14th season (2024) and specials from 2023. It is currently the main platform for new episodes in Brazil and other regions

• Prime Video has multiple seasons available, including the 2006 series with the Ninth Doctor and Rose, as well as seasons featuring David Tennant and Matt Smith

• Max (formerly HBO Max) streams all 13 seasons of the modern Doctor Who series, according to Reddit discussions, making it a good option for watching the bulk of the modern episodes

• You can also purchase or rent episodes via Microsoft Store and other digital stores

In summary, for the most current episodes and specials, Disney+ is the recommended platform, while Prime Video and Max provide access to many past seasons of Doctor Who