Maryann Amirshahi

Maryann E. (Mazer) Amirshahi, PharmD, MD, MPH, is an emergency medicine physician at MedStar Washington Hospital Center (MWHC). In addition to her current practice at MWHC, Dr. Amirshahi has significant experience as a registered pharmacist, having practiced pharmacy in both the inpatient and outpatient settings for more than a decade.

Her research, on topics such as prescription drug abuse, medication reconciliation, patient adherence, and drug shortages, has been published in peer-reviewed journals. She serves as a reviewer for several journals, including Pharmacoepidemiology and Drug Safety, Journal of Clinical Pharmacology, Academic Emergency Medicine and the Western Journal of Emergency Medicine.

Dr. Amirshahi serves on the Pharmacy and Therapeutics Committee of the American College of Medical Toxicology and on the External Collaboration Committee of the Society of Academic Emergency Medicine. She is a member of several other professional societies, including the American Society for Clinical Pharmacology and Therapeutics, the American College of Clinical Pharmacology, the American College of Clinical Toxicology, and the American College of Emergency Physicians.

She is board certified in emergency medicine, medical toxicology, and as a pharmacotherapy specialist. She is board-eligible in clinical pharmacology. She serves as a toxicology consultant for the Mid-Atlantic Center for Children’s Health and the Environment and the National Capital Poison Center.

Dr. Amirshahi completed her Bachelor of Science and Doctor of Pharmacy degrees at the University of the Sciences in Philadelphia and her medical degree at Temple University. She completed a residency in Emergency Medicine at the Hospital of the University of Pennsylvania, a fellowship in Medical Toxicology at George Washington University, and a fellowship in Clinical Pharmacology at Children’s National Medical Center. She also completed a Master of Public Health degree, focusing on environmental and occupational health, at George Washington University.

Research Interests

Dr. Amirshahi’s research interests include

  • Clinical pharmacology
  • Drug shortages
  • Drug therapy in emergency medicine
  • Medication safety
  • Medical toxicology
  • Prescription drug abuse

Selected Research

Dr. Amirshahi specializes in research on prescription drug abuse, medication reconciliation, patient adherence, and drug shortages.

Selected Publications

Publications under the name Maryann Mazer

View Dr. Amirshahi’s publications on PubMed

Research Areas


  • Biostatistics/Bioinformatics
    Health Services/Quality/Outcomes
    Neuroscience
    Other Medical