Fernando J. Otero, who worked in medical billing and had been collection manager since 2008 at Washington Radiology Associates in the District, died Feb. 10 at his home in Silver Spring. He was 55.

The cause was melanoma, said Lucia Otero Mackell, his sister.

Mr. Otero was an at-home father for a child who required special care from 2000 to 2007. Earlier, he handled medical billing at American Collection Consultants, was personnel director at Ruppert Landscape in suburban Maryland, and was a development specialist with the Hispanic Youth Employment Coalition.

Fernando Jorge Otero was born in La Paz, Bolivia, and raised in Chevy Chase. He was a 1976 graduate of Bethesda-Chevy Chase High School and attended the University of Maryland.

Mr. Otero was a member of St. Andrew the Apostle Catholic Church in Silver Spring. He coached football and little league in Montgomery County and was an assistant den leader with the Cub Scouts in Burtonsville, Md.

Survivors include his wife of 29 years, Dana Vagnoni, and their two sons, Alejandro Otero and Andres Otero, all of Silver Spring; and his mother, Maria Teresa Otero of Chevy Chase.

Other survivors include five sisters, Cecilia Otero of Silver Spring, Lucia Otero Mackell of Chevy Chase, Carola Otero Bracco of Mount Kisco, N.Y., and D.C. Deputy Mayor Beatriz “B.B.” Otero and Maria Otero, a former undersecretary of state for democracy and global affairs, both of Washington; and two brothers, Francisco “Pancho” Otero of Santa Cruz, Bolivia, and Rene Otero of Silver Spring.

— Adam Bernstein