Some scenes of the show are filmed in the same street sets as "How I Met Your Mother". If you see carefully, when leaving Michelle with her boyfriend, Dr. Saroyan passes by the McLaren's pub, recognizable for the basement window and the stoop leading to Ted's building.
In The Doctor in the Den (2009), Michelle Welton was played by Dana Davis; from then on Michelle Welton was played by Tiffany Hines.