Charlie Vallejo told CNN his father treated his patients like family.
"He cared too much," Charlie Vallejo said.
"(He was) surrounded by machines and no human contact so I think that kind of broke him," said Charlie Vallejo.
After three weeks in the ICU, including two weeks on a ventilator, Carlos Vallejo died on August 1.
He was a warrior to the very end," Charlie Vallejo said.
Five members of the Vallejo family contracted coronavirus, including Carlos's wife.