Dr. Mark Sloan was played by Eric Dane (who was a recurring guest star on Charmed and is scheduled to appear in X-Men 3).
Steven W Bailey played Joe in Grey's Anatomy
Jamie Chung, I think.
Sandra Oh plays Cristina Yang on Grey's Anatomy.
Daniel Sunjata
Mandy Moore played Mary Portman within the Sixth and Seventh season of Grey's Anatomy. She was a patient treated by Dr. Bailey.
Mary McDonnell plays Dr. Virginia Dixon on Grey's Anatomy. On the show she portrays a heart surgeon with Asperger Syndrome. She also played the First Lady in Independence Day and President Laura Roslin on Battlestar Galactica.
Steven W Bailey played Joe in Grey's Anatomy
Steven W Bailey played Joe in Grey's Anatomy
Jennifer Greer has: Played Mandy in "Zombiegeddon" in 2003. Played herself in "The Steve Katsos Show" in 2009. Played Hayumi in "A Lost Generation" in 2010. Played Girl in "Flat" in 2010. Played Herself - Plastic Surgeon in "America Now" in 2010.
The chief on Gray's Anatomy is named Claire Bennett, and is played by your mom.
Katherine Heigl
Dr. Thomas is played by William Daniels.
Jim Sharits has: Played Host in "Anatomy of a Shark Bite" in 2003. Played Tech Team Leader in "More Than Human" in 2003. Played Himself - Project Manager in "Cheating Death" in 2004. Played Host in "Anatomy of a Bear Bite" in 2004. Played Host in "Anatomy of a Tiger Bite" in 2004. Played himself in "Sharkzilla" in 2012.
The actor who played the character of Christian Troy is Julian McMahon. On the FX TV show Nip/Tuck, Dr. Christian Troy is a plastic surgeon based in Miami, FL.
Jamie Chung, I think.
Kate Burton.
Greys anatomy