About Dr. Mareiniss

Darren P. Mareiniss, MD, FACEP is board certified Emergency Medicine physician who practices at Einstein Medical Center in Philadelphia.  He has published and lectured on multiple medical, ethical and legal topics as well as served as Chair of the MedStar Franklin Square Medical Center Ethics Committee. He has three Ivy League degrees and extensive medical experience.  He has expertise in pandemic response and previously assisted in creating the ventilator allocation protocols for the state of Maryland.  He has published extensively in the peer-review literature and sits on multiple pandemic related task forces and committees.

Dr. Mareiniss obtained an AB in genetics from Dartmouth College.

Subsequently, he attended the NYU School of Medicine, where he graduated at the top of his class and was elected to the AOA Honor Medical Society.

After medical school, Dr. Mareiniss went on to train in Emergency Medicine at The Johns Hopkins Hospital, where he received the Resident Research award.  He is board certified in Emergency Medicine and is a Fellow of the American College of Emergency Medicine. 

In addition to his medical training, Dr. Mareiniss also holds a JD from the University of Pennsylvania Law School and a Masters of Bioethics from the University of Pennsylvania School of Medicine​.

After finishing residency training at The Johns Hopkins Hospital, Dr. Mareiniss joined the faculty of the Department of Emergency Medicine at the University of Maryland School of Medicine.  He then joined MedStar Emergency Physicians and became an Assistant Professor of Clinical Emergency Medicine at the Georgetown School of Medicine.  He also served as the:

  • Chair, Ethics Committee, MedStar Franklin Square Medical Center

  • Member, MedStar Mortality Review Committee

  • Clinical Site Director, Georgetown School of Medicine

Dr. Mareiniss currently practices Emergency Medicine at Einstein Medical Center in Philadelphia.  He previously served as the Assistant Program Director of the Einstein Emergency Medicine Residency Program.  Currently,  Dr. Mareiniss is Assistant Professor of Emergency Medicine at the Sidney Kimmel Medical College of Thomas Jefferson University.  During the pandemic, he has served on several Task Forces and Committees including:

  • ED Incident Command - Einstein Medical Center

  • Chair, Ventilator Allocation Committee - wrote allocation protocol for the Einstein Health Network

  • Vaccine Task Force - Einstein Health System 

  • Vaccine Education Subcommittee 

  • Vaccine Advisor for the Network Vaccination Clinics

  • Vaccine Priority Subcommittee - Einstein Health System

He has published multiple peer-review articles, book chapters, op-eds, lay press articles and appeared on local TV in Baltimore and Philadelphia.  He is a frequent contributor to Eat This Not That.

Education & Training

  • University of Pennsylvania - Masters of Bioethics / JD

  • Dartmouth College, Cum Laude - Genetics & Developmental Biology - 1994

Certification & Licensure

  •  PA State Medical License

  •  MD State Medical License


  •  American Board of Emergency Medicine Emergency Medicine

Awards, Honors & Recognition

  • Outstanding Resident Research Award The Johns Hopkins Hospital Department of Emergency Medicine

  • Outstanding Achievement Award The Johns Hopkins Hospital Department of Emergency Medicine

  • Board of Governors Award American College of Legal Medicine

  • Alpha Omega Alpha Honor Medical Society NYU School of Medicine, 1999

  •  Whos Who in Medicine and Healthcare Marquis Whos Who

Disclaimer -  Any communications or opinions given by Dr. Mareiniss, either written or orally, are not intended to be and do not constitute medical advice or treatment recommendations nor do they constitute legal advice.  No communication or contact through this website establishes a patient-physician relationship or an attorney-client relationship.