John P. Marshall, MD

Interim Chief Medical Officer

Maimonides Physician


Emergency Medicine



About Me

Dr. John Marshall is the Chair of Emergency Medicine at Maimonides Medical Center in Brooklyn, NY. He is also the Director of the Education Fellowship. Dr. Marshall completed his residency in emergency medicine at Denver Health Medical Center. He is board-certified in Emergency Medicine. Dr. Marshall and the ER team treat a wide variety of emergency and critical care conditions, 24 hours a day, 7 days a week. Dr. Marshall and the Emergency Medicine staff offer a number of state-of-the-art treatments and procedures including diagnostic sonography (ultrasonography) and bedside ultrasounds. Dr. John Marshall has published extensively throughout his career. He has a strong interest in medical education. Dr. Marshall spent four years as the Residency Program Director at Maimonides, writing the training program for Emergency Medicine, and prior to that was the Associate Program Director. Currently, Dr. Marshall is the Assistant Professor Emergency Medicine at Mount Sinai Medical Center. Dr. Marshall has a life interest in medical education. He enjoys teaching residents, medical students, members of the staff, and the community. He believes that teaching is the lifeline of caring for generations to come.

Areas of Expertise

  • Emergency Medicine


Medical Degree

University of Michigan Medical School


University of Hawaii


Denver Health Medical Center


Emergency Medicine


  • Aetna
  • Affinity Health Plan
  • CenterLight
  • Centers Plan
  • Cigna
  • ElderPlan
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • Fidelis
  • HealthFirst
  • Hotel Trades
  • Local 1199
  • MagnaCare
  • Medicaid
  • Medicare
  • MetroPlus
  • MultiPlan
  • Oxford
  • RiverSpring Health Plans
  • Tricare
  • United Healthcare
  • VillageCare Max
  • VNS Choice
  • Wellcare
  • WTC Health Program

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