OEHN Leadership Team 

Dieter Affeln, MD
Medical Director

Board certified in Occupational Medicine and a certified MRO (Medical Review Officer), Dr. Affeln brings extensive occupational health experience to OEHN.

Dr. Affeln received his medical diploma and license to practice medicine from the University of Cologne in Germany.  He then went on to receive his Masters in Public Health with a specialty in Occupational and Environmental Health from Harvard School of Public Health.  He has been a member of the Occupational Medicine Board.

After completing his training in general practice at a family practice in an urban London neighborhood, Dr. Affeln became a fellow in Palliative care at the Cleveland Clinic Foundation. 

Dr. Affeln currently provides Medical Director Leadship for OEHN at Nashoba Valley Medical Center in Ayer, MA.  As the current Medical Director in the Employee Health Department at Beth Israel Deaconess Medical Center, Dr. Affeln consults on treatment of workplace injuries and illnesses.  He also evaluates employee fitness for duty, disabilities, in addition to overseeing surveillance and health and safety concerns.  Dr. Affeln is on the faculty of Harvard Medical School.  He was previously the Medical Director of the Chelsea Occupational Health Services.