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Dr. Leffer is on Doximity

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Education & Training

  • University of Pennsylvania Health System Occupational Medicine
    University of Pennsylvania Health System Occupational MedicineResidency, Occupational Medicine, 2007 - 2008
  • NIH
    NIHpost-doctoral, Health Service Research, 1990 - 1992
  • Johns  Hopkins School of Public Health
    Johns Hopkins School of Public HealthMPH, 1990 - 1991
  • UPMC Medical Education (Harrisburg)
    UPMC Medical Education (Harrisburg)Residency, Family Medicine, 1988 - 1990
  • Icahn School of Medicine at Mount Sinai
    Icahn School of Medicine at Mount SinaiClass of 1985

Certifications & Licensure

  • MD State Medical License
    MD State Medical License 1988 - 2024
  • American Board of Preventive Medicine Occupational Medicine

Publications & Presentations

PubMed