[4] She was part of The Working Theatre, an actor-teacher ensemble and training program created and taught by Joseph Chaikin, Peter Kass, and Kristin Linklater.
[17] Ohama played Friar Lawrence in Romeo and Juliet in 1993,[18] Don John in Much Ado About Nothing in 1999,[19] Prospero in The Tempest in 2004,[20] and Polonius in Hamlet in 2013, in a production that she again co-directed with Wolpe.
[21] At the Mark Taper Forum, Ohama played June in Sansei (1989),[22] Yanina in Widows (1991),[23] the Duchess of York and Gloucester opposite Kelsey Grammer in the lead in Richard II (1992),[24] and Sylvia in The Poison Tree (2000),[25] all directed by Robert Egan.
At East West Players, Ohama played Lily in Ikebana (1996),[26] Chiz in Sisters Matsumoto (2002),[27] and Mom in Mixed Messages (2004).
[38] As a playwright, Ohama wrote Morgan O Yuki: The Geisha of the Gilded Age which was commissioned and produced at the Ventford Theatre in Lenox, Massachusetts, in 2006 and remounted in 2013.
[46] She received a nomination for Drama Desk Award for Outstanding Actress in a Play for Sound & Beauty at The Public Theater in 1993–94.