De los Angeles was born in
San Mateo, then part of the
province of Manila, on August 6, 1875. He pursued his secondary education at Señor Enrique Mendiola's school, later known as
Instituto Burgos. In 1887, he entered the
Colegio de San Juan de Letran then in 1892 to 1898, he studied medicine at the
University of Santo Tomas over which he gained his medical degree.
Early medical career De los Angeles became a practicing physician in
Lucena,
Tayabas (now Quezon), and founded a hospital in that province. He also became Chief of Military Health in the province of Tayabas. Aside from his career in public health, he also created a Tagalog magazine in San Mateo, Rizal. He retired from government service in 1938. ==Personal life==