(written from a Production point of view)
Chris Wynne is the actor who played Doctor Moninger in the Star Trek: Enterprise second season episode "Regeneration". He filmed his scenes in early March 2003. His arctic gear outfit from this episode was later sold off on the It's A Wrap! sale and auction on eBay. 
Wynne received his first credits as an actor in the early 1980s, sometimes credited as "Greg Wynne". Among his first appearances are the thriller Early Warning (1981), the adventure Mystery Mansion (1983, with Richard Poe), the comedy Private Resort (1985, with Hilary Shepard and Raymond Forchion), the television drama On Fire (1987, with John de Lancie, Bill Erwin, Mike Genovese, and Brian McNamara), the crime drama Cop (1988, with Steven Lambert and Jim Wilkey), the science fiction comedy Remote Control (1988, with Bert Remsen, Dick Warlock, Dick Durock, and George P. Wilbur), the war drama 1969 (1988, with Mariette Hartley, Winona Ryder, and Joanna Cassidy), and episodes of Paradise (1989, with Michael Ensign, Julianna McCarthy, and John Bloom) and Murphy Brown (1989, with Steven Culp and John Hostetter).
In 1990, Wynne appeared in a dual role, one of Buford Tannen's gang in 1885 and one of Needles' gang in 1985, in the science fiction sequel Back to the Future Part III. The film starred Christopher Lloyd and featured Mike Watson.
Further acting work includes episodes of Head of the Class (1990, with Jeanetta Arnette), The Adventures of Brisco County Jr. (1993, with John Pyper-Ferguson), ER (1994, with Christine Harnos, Scott Jaeck, Julianna McCarthy, Michael Cavanaugh, Liz Vassey, Thomas Dekker, Shelly Desai, and Miguel Ferrer), Walker, Texas Ranger (1999, with Noble Willingham and Eddie Braun), The X-Files (1999 and 2000, with Randall Bosley), Profiler (2000, with Raphael Sbarge), The West Wing (2000), The Division (2001, with Lisa Vidal, Jay Harrington, Margot Rose, and Barry Wiggins), JAG (2002, with Scott Lawrence, Bruce Gray, and Scott Hamm), and Judging Amy (2002, with Kevin Rahm and Cynthia Graham).
Film work includes the television thriller Don't Touch My Daughter (1991, with Paul Sorvino, Jonathan Banks, Christine Healy, Gregg Henry, Jeremy Roberts, and Dan Woren), the action sequel Speed 2: Cruise Control (1997, with Michael G. Hagerty, Francis Guinan, Enrique Murciano, Michael O'Hagan, and Tommy J. Huff), and the crime drama Undisputed (2002, with Nicholas Cascone, Susan Dalian, and Michael Bailey Smith).
Among his most recent credits are the comedy sequel The Princess Diaries 2: Royal Engagement (2004, with John Rhys-Davies, Chris Pine, Elinor Donahue, Aldric Horton, Paul Williams, Neal Kaz, and Stan Lee), the family adventure Sky High (2005), the drama Chronic Town (2008, with Dan Butler and Paul Dooley), and the short drama The Beating (2013, with James Hiroyuki Liao).