Blasi was born in Chicago, Illinois, to Rocco and Joyce Blasi. Blasi is classically trained as a mezzo soprano. She also comes from a strong theatre background; ranging from the esteemed Piven Performance Company, as well as The Second City, to starring in numerous musicals and touring with Kenny Rogers. Rosa Blasi has one sister (Tasha) and one brother (Rocky).
Blasi's television debut was a recurring role on the CBS soap opera, The Bold and the Beautiful. Soon to follow was a starring role on the MTV/UPN sitcom Hitz. She soon found herself guest starring on numerous shows such as Frasier, Becker, Caroline in the City, V.I.P., Grown Ups, and Beverly Hills, 90210. She later starred in the dramatic Showtime film, Noriega: God's Favorite. The film was directed by Roger Spottiswoode and co-starred Bob Hoskins. The film was critically acclaimed. In her breakout role, Blasi starred in the Lifetime drama series Strong Medicine from 2000 to 2006, starring as a doctor who runs a free health clinic. She made an appearance in "Shootout", a 2005 episode of CSI: Miami. Audiences saw Blasi in her first role in a major film as the wife of Bill Pullman's character in The Grudge.
Blasi appeared during The Vagina Monologues at the Apollo Theater and has also been a recurring performer at the "What a Pair" benefit concert for breast cancer research and has recorded numerous radio and television voice-overs. She was a repeat guest on talk shows such as Politically Incorrect with Bill Maher and The Late Late Show with Craig Kilborn.
She currently plays Ronnie Cruz on Make It or Break It. She plays a recurring character on General Hospital currently, as well. She wrote a comedic memoir titled Jock Itch: Misadventures of a Retired Jersey Chaser (2011) published by HarperCollins.
|2000||Noriega: God's Favorite||Lead|
|Lesser Of Three Evils||Woman in Black|
|2008||Memories of Murder|
|1996||The Bold and the Beautiful|
|High Tide||no information available||Guest Star - episode 3-06/07: "University Blues I & II"|
|1997||Married... with Children||Woman #1||Guest Star - episode 11-17: "Breaking Up Is Easy To Do"|
|Hitz||April Beane||Series regular|
|1998||Frasier||The waitress||Guest Star - episode 6-12: "Secret Admirer"|
|Becker||Carmen||Guest Star - episode 1-03: "Sex In The Inner City"|
|Caroline in the City||Lana||Guest Star - episode 84: "Caroline And The Booby Trap"|
|1999||Holding the Baby||Wendy||Guest Star - episode 1-11: "Make Room For Da-Da"(unaired)|
|Sons of Thunder||Marita Cortez||Guest Star - episode 1-01: "Moment Of Truth"|
|Beverly Hills, 90210||Clara Covington||Guest Star - episode #255: "Withdrawal|
|Grownups||Carla||Guest Star - episode 1-03: "The Out Of Work-Out"|
|The Drew Carey Show||Isabel||Guest Star - episode 5-09: "Drew Cam"|
|2000||V.I.P.||Cassandra||Guest Star - episode 2-14: "New Val'd Order"|
|2000–2006||Strong Medicine||Dr. Luisa "Lu" Delgado||Series regular|
|2005||CSI: Miami||Ana Garcia||Guest Star - episode 3-12: "Shootout"|
|2007||Eight Days a Week||Randi Rome||Series regular|
|2009||Make It or Break It||Ronnie Cruz||Series regular|
|2010||General Hospital||Fernanda DeLarosa||1 episode|
|2010||Lone Star||Blake Thatcher||