For medical and nursing students such as O'Malley, who come from the United States and Europe to join Bwelle on his missions, it's a hands-on opportunity they'd never get at home.
"We've been able to scrub in on surgeries where we help blot blood away or hold tools for Dr. Bwelle," O'Malley said. "That's not something you'd ever get to do in America as a second-year medical student."
The student volunteers usually pay their own way to Cameroon, often arriving with donated medical supplies. But once they arrive in Yaounde, their board, transportation and instruction are covered by Bwelle.
"He's a hero, without a doubt," O'Malley said. "He gives his life to this organization, and his desire to help the Cameroon people is everlasting."
For Bwelle, the near-constant workload isn't a hardship. Helping others live happier lives, fulfilling a promise he made to his father, is something that brings him great joy.
"I am so happy when I am doing this work," Bwelle said. "And I think about my father. I hope he sees what I am doing.
"To make people laugh, to reduce the pain, that's why I'm doing this."
Want to get involved? Check out the ASCOVIME website and see how to help.