Ostermiller specializes in the performance of works by American composers who died of complications from AIDS during the late twentieth century. He wrote a doctoral dissertation at NYU, entitled Musical Responses to AIDS: Meaning and Signification in Two Works for Solo Piano by Robert Savage and Kevin Oldham.
Learn more about Ostermiller's work in this 2014 interview with Visual AIDS.
An advocate for HIV/AIDS treatment and awareness, Ostermiller has produced, hosted, and performed in benefits for organizations such as the Gay Men’s Health Crisis, New York AIDS Walk, Colorado AIDS Project, Regional AIDS Interfaith Network, Bailey House, and the Joshua Gomes Memorial Scholarship Fund. He serves on the Community Advisory Board for the Center for Health, Identity, Behavior and Prevention Studies (CHIBPS), an institute at New York University devoted to HIV/AIDS-centric behavioral research.