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About Douglas Brennan FBI

A longtime law enforcement professional and former Special Agent with the FBI in Colorado, Douglas Brennan is currently studying toward his MD in Denver, Colorado. As a medical student, he sits on the steering committee of his school’s Global Health Track. Before returning to school to pursue his medical degree, Douglas Brennan spent more than 10 years as an EMT-B and tactical medic with the FBI in Colorado.

Brennan spent the early years of his career as a police officer with the San Bernardino Police Department in California, where he served as a lead investigator for all major crimes. In addition to becoming a field training officer after less than five years with the SBPD, he participated in a community service team tasked with meeting business owners and leaders from the community. He also served for five years as a captain in the United States Marine Corps.

Work experience

Mar 2001Aug 2011

Special Agent

FBI (Federal Bureau of Investigation)
Mar 1994Mar 2001

Police Officer

City of San Bernardino, California
May 1988Nov 1993


United States Marine Corps


Aug 2011Present


University of Colorado
Aug 1998Jun 2000


California State University
Aug 1984May 1988


Rensselaer Polytechnic Institute