Ohama's early acting career was primarily in New York and in other areas of the East Coast and Canada. In 1981, she played Junko Teraji in
Flowers and Household Gods at
La MaMa Experimental Theatre Club in New York. In 1984 at Shakespeare & Company, she played Titania in ''
A Midsummer Night's Dream and Juliet in Romeo and Juliet'', both directed by
Tina Packer. Ohama worked repeatedly with
Pan Asian Repertory Theatre in New York. Some of her work there includes
Teahouse (1983),
Face Box (1984),
Once is Never Enough(1985), Lady MacDuff in
Shogun Macbeth (1986), Nancy Wing in
Yellow Fever (1988), Madame De Sade in
Madame De Sade (1988), and Masha in
Three Sisters(1988). She acted in plays including
The Memento (Marie) at Yale Rep, directed by Dennis Scott (1987),
The Love Suicides at Amijima (Narrator and Osan), directed by Jorge Cacheiro (1987) for
New York Theatre Workshop, and
Straight as a Line (Mum), directed by Jon Rivera (2000) for
Primary Stages in New York City. ==Mid-career==