In 1988 after graduation from medical school, he established the position of the HIV program coordinator for the Department of Pediatrics/Pediatric Immunology of The University of Massachusetts Medical Center. Coordinating with the Worcester Department of Public Health, he was responsible for the implementation of a comprehensive AIDS risk-prevention program targeted at the Hispanic community.
Dr. Sanchez served as a deputy medical examiner for the District of Columbia for six and a half years and served as the Acting Chief Medical Examiner for the District of Columbia in 1998. During his tenure, Dr. Sanchez was a frequent lecturer at the Department of Criminal Investigation Homicide School of the Metropolitan Police Department. Additionally, he was the liaison to the United States Attorney's Office from 1994 until 1998.
Dr. Sanchez joined the HCIFS staff in June 2001 as the Senior Deputy Chief Medical Examiner with more than 10 years of hands-on experience and expertise in forensic pathology. In October 2002, he became the Interim Chief Medical Examiner of Harris County and was appointed Chief Medical Examiner by unanimous vote of Harris County Commissioners Court effective January 1, 2003.
Since 1995 Dr. Sanchez has been an active consultant in forensic medicine for the International Criminal Investigative Training Assistance Program (ICITAP) under the aegis of the Criminal Division of the U.S. Department of Justice. As an ICITAP instructor, Dr. Sanchez has taught all aspects of forensic medicine including the on-scene role of the medical examiner to police officers, doctors, and lawyers in programs he designed and implemented in emerging democracies throughout the world. During Dr. Sanchez's participation, these programs have become integral to the ongoing development of viable medicolegal systems throughout Central and South America, the Caribbean, Central Asia (Uzbekistan and Kazakhstan) and East Africa.