The series, a contemporary reimagining of the 1989 feature, had been scheduled to begin filming July 27. The production start of the Universal Media Studios/Imagine TV-produced show is now tentatively scheduled for late September.
"Start of production on NBC Universal's new series 'Parenthood' has been postponed for eight weeks due to medical evaluation that valued cast member Maura Tierney is undergoing," NBC said in a statement. "The top priority for NBC, Universal Media Studios and Imagine Television is the well-being of Ms. Tierney. We are unable to release further details and ask that you respect her privacy at this time."
"Parenthood" revolves around four siblings (Peter Krause, Tierney, Erika Christensen, Dax Shepard) and their parents (Bonnie Bedelia and Craig T. Nelson).
As a result of the delay, NBC is making a change on its fall schedule.
Parenthood had been slated to premiere Sept. 23 and run in the Wednesday 8 p.m. hour.
With Parenthood pushed, new drama Mercy, which was to take over the Wednesday 8 p.m. slot in midseason, will launch in the fall. The cast and crew of the medical drama have been summoned to start work on the series early to have it ready for a September debut. It is not clear yet if "Mercy" will air Wednesdays at 8 p.m. as NBC is re-evaluating its fall scheduling plans.
This is the second time filming on Parenthood has been put on hold under unfortunate circumstances. In April, production on the pilot was shut down for two days after NBC's vp drama Nora O'Brien died unexpectedly on the Berkeley, Calif., set of the show.
Tierney, 44, who has been public about her long struggle to quit smoking, is best known for her 10-year stint as Dr. Abby Lockhart on ER, for which she earned an Emmy nomination.
She also starred on another Peacock series, comedy NewsRadio, and has appeared in a number of features, including Insomnia and Baby Mama.
Parenthood -- whose cast also includes Potter, Sarah Ramos, Mae Whitman and Miles Heizer -- was penned by Friday Night Lights creator Jason Katims, who is exec producing with Ron Howard and Brian Grazer.
Mercy, from writer/exec producer Liz Heldens and exec producers Gretchen Berg, Aaron Harberts, Gail Berman and Lloyd Braun, chronicles the lives of the staff at Mercy Hospital through the eyes of three nurses (Taylor Schilling, Michelle Trachtenberg and Jaime Lee Kirchner).
The cast of the series also includes James Tupper, Guillermo Diaz, Delroy Lindo, James LeGros and Diego Klattenhoff.
– Nielsen Business Media