Gary M. Marsh, Ph.D., F.A.C.E. is a Senior Principal Health Scientist at Cardno ChemRisk. Dr. Marsh is also Professor Emeritus of Biostatistics and Epidemiology, and the Founding Director of the Center for Occupational Biostatistics and Epidemiology at the University of Pittsburgh, Graduate School of Public Health. He is a Fellow of the American College of Epidemiology.

Dr. Marsh directs occupational epidemiologic studies to investigate the long-term health effects of exposure to such agents as asbestos, man-made mineral fibers, cosmetic talc, formaldehyde, acrylamide, acrylonitrile, arsenic, chloroprene, styrene, vinyl chloride, tungsten carbide with cobalt binder, petrochemicals, aromatic amines, perchloroethylene and pharmaceuticals. In addition, he conducts environmental epidemiologic studies of communities exposed to industrial pollutants or to hazardous waste site materials and is involved in basic methodological research related to longitudinal data analysis and quantitative risk assessment.

Dr. Marsh has more than 300 publications in the areas of biostatistics, occupational/ environmental epidemiology, quantitative risk assessment, statistical computing and health services evaluation. He is the senior author of the computer software packages, OCMAP (Occupational Cohort Mortality Analysis Program), which is used as a standard analytic tool by numerous domestic and foreign institutions involved in occupational health research, and RACER (Rapid Assessment and Characterization of Environmental Risks). Dr. Marsh is also developer of the original Mortality and Population Data System (MPDS), a repository and retrieval system for National Center for Health Statistics (NCHS) and U.S. Census Bureau data.

Dr. Marsh is an active member of the American College of Epidemiology, the American Statistical Association, the Biometric Society, the International Society for Environmental Epidemiology, the Society for Epidemiologic Research, the Society for Occupational and Environmental Health and the International Commission on Occupational Health.


  • PhD, Biostatistics, University of Pittsburgh, 1977
  • MS, Biostatistics, University of Pittsburgh, 1974
  • BS, Mathematics, University of Pittsburgh, 1973
  • Fellow of the American College of Epidemiology

Professional Associations

  • American Statistical Association (1974-present) - Secretary, Vice President, President – Pittsburgh Chapter (1979-1982); National Council Representative (1981-1982)
  • Biometric Society (1974-Present)
  • Society for Occupational and Environmental Health (1978-present) - National Governing Council (1986-1989)
  • Society for Epidemiological Research (1979-present)
  • Pennsylvania Public Health Association (1986-present) - Member, Board of Directors (1989-1992)
  • International Society for Environmental Epidemiology (1988-present)
  • International Commission on Occupational Health (1996-present)
  • American College of Epidemiology (1997-present) - Fellowship (1997)
  • British Occupational Hygiene Society (2001-2010)

Most Recent Awards/Professional Honors

  • B.S., Cum Laude (1973)
  • Adolf G. Kammer Merit in Authorship Award - Best Publication in Field of Occupational Health, American Occupational Medical Association (1981)
  • Delta Omega, Public Health Honorary Society (1985)
  • Tenure, University of Pittsburgh, Department of Biostatistics (1986)
  • Outstanding Teacher Award, Graduate School of Public Health (1994)
  • Biographical Entry in Who’s Who in Science and Engineering (1997)
  • Fellowship, American College of Epidemiology (1997)
  • 50 at 50 Award, Graduate School of Public Health (selected as one of 50 outstanding contributors in field of public health in 50 year history of school) (1999)
  • Biographical Entry in Who’s Who in Medicine and Healthcare (2002)
  • Biographical Entry in 2000 Outstanding Scientists of the 21st Century (2003)
  • Biographical Entry in Who’s Who in America (2004)
  • Biographical Entry in Who’s Who in American Education (2005)
  • University of Pittsburgh Innovator Award for work on OCMAP software package (2006, 2008, 2009, 2013)