The star of a successful ABC drama series plans to leave the show, Deadline.com reports. After appearing as Dr. Addison Montgomery for seven years — the first two on “Grey’s Anatomy” and the last five as the central character on “Private Practice” — Kate Walsh is poised to leave “Practice,” the story reports.

Walsh plans to leave the drama after 13 more episodes, the story says. Her possible departure has been the subject of speculation for some time, and she agreed to return for season six after intense negotiations — but committed only to 13 episodes. That led to the show’s renewal by ABC for a shortened 13-episode season.

Walsh is ready to move onto other projects, the story says. It’s unclear whether the show will continue without her, but speculation has been that season six would be the show’s last. ABC hasn’t announced an end date for the program, the piece points out.

The show’s creator and executive producer Shonda Rhimes has three series on the air, with all three — “Grey’s Anatomy,” “Private Practice” and “Scandal” — created and run by her, the story notes, speculating that it might make sense for Rhimes to shift her focus to her other shows and call it a day with “Practice” after Walsh’s departure.

As previously reported, another cast member is leaving the show. Original cast member Tim Daly, who played Pete Wilder for the show’s first five seasons, is leaving the program.

Kate Walsh