Togasaki grew up in San Francisco in a Japanese immigrant family and remembered the improvised relief work surrounding the 1906 earthquake. She studied zoology, nursing, and public health before earning a medical degree from the Woman's Medical College of Pennsylvania in the 1930s.
Racism and sexism restricted posts available to Japanese American women. She built practice through community need, language, and trust rather than easy entry into elite hospitals.
Released in 1943, she eventually returned to a San Francisco home that had been looted and rebuilt her practice. She continued caring for patients, including those unable to pay, for decades.