He is chairman and founder of Ezra LeMarpeh, a nonprofit organization established in 1979 that provides medical assistance to the needy.

[1] Firer matches sick people with the best hospitals, physicians and treatments available for their conditions, in Israel and abroad.

According to Harvard Medical School's Dr. Ivo Janko, Firer and his organization provide integrated services unparalleled in the world.

The body of judges who awarded the Israel Prize to Firer described his tireless work and the inspiration offered by his "boundless energy, patience, cheerfulness and serenity, which are essential conditions for working with the sick, the elderly and the needy, who more than anything else need emotional support."

Doctors accept Firer's suggestions and referrals, and his office is open for consultation and advice at all hours of the day and night.