The 59-year-old takes on the role of Angela Lombard, a parish secretary at the centre of a hate campaign against a new female vicar.
When Daniel Granger (Matthew Chambers) offers to help, it soon transpires that Angela was in love with the former priest and is furious with his successor.
The episode, titled 'Love Thy Neighbour', is due to transmit on Monday, July 5 on BBC One.
Badland last filmed at the Birmingham-based soap in July 2007, playing a cantankerous woman called Sarah Hardy. She filmed two further guest spots in 2004 and 2000.
Doctors celebrates its tenth anniversary this week with a special series of short documentaries, Decade of Doctors, fronted by series regular Diane Keen (Julia Parsons).
The episodes take a behind-the-scenes look at some of the show's biggest storylines and guest artistes since the turn of the millennium.
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