Academic Credentials
  • M.P.H., Public Health, Johns Hopkins University, 2000
  • M.D., Medicine, University of Chicago, 1983
  • M.A., Educational Psychology, University of Chicago, 1973
  • B.A., Sociology, Drew University, 1972
Licenses & Certifications
  • Certified Medical Review Officer (MRO)
  • Certified, American Board of Preventive Medicine
  • Licensed, State of Maryland Medical Board
Professional Affiliations
  • American College of Occupational and Environmental Medicine
  • American College of Preventive Medicine
  • International AIDS Society
  • National Disaster Life Support Education Consortium

Dr. Clarke is a licensed physician, board certified by the American Board of Preventive Medicine in Public Health/General Preventive Medicine. His areas of expertise include health effects of biological, chemical, and nuclear weapons; health effects of indoor mold exposure; the pathophysiology of burns; the epidemic of opioid overdoses; epidemiology; occupational health; international health; and infectious diseases.

Dr. Clarke's clinical experience includes 15 years in a variety of settings ranging from Indian Health Service clinics in Barrow, Alaska, and Pine Ridge, South Dakota, to inner city clinics in Chicago and Baltimore. His clinical experience includes work in both Occupational Medicine and Family Medicine. Prior to receiving his training in Preventive Medicine at Johns Hopkins University, he worked for the Family Medicine Department of the Johns Hopkins Medical Service Corporation gaining experience in rural, suburban, and urban medicine.

Before entering the field of medicine, Dr. Clarke worked for the State of Illinois, Department of Mental Health, at the Institute for Juvenile Research in Chicago, where he designed and conducted research projects as well as performed and interpreted complex statistical procedures. During his residency in Preventive Medicine, Dr. Clarke worked at the Center for Civilian Biodefense at Johns Hopkins. He also continued to gain experience in occupational medicine working with the U.S. Army Center for Health Promotion and Preventive Medicine (USACHPPM).

In November 2001, Dr. Clarke completed the United States Army's course in the medical management of biological and chemical casualties given at the U.S. Army's chemical weapons defense research facility (USAMRICD) in Edgewood, Maryland and the U.S. Army's biological weapons defense research facility (USAMRIID) at Fort Detrick, Maryland. Dr. Clarke is an Advanced Disaster Life Support (ADLS) instructor, the AED coordinator for Exponent's Bowie, Maryland office, and a physician volunteer with the Missionaries of Charity caring for AIDS patients in Baltimore.