Toxicology Resources > For Fellows-in-Training > ACMT FIT Association > 2014-2015 MTFITA Board

Board Members of the Medical Toxicology Fellows-in-Training Association (MTFITA)

Glenn Burns, MD
Ohio State University / Nationwide Children’s Hospital 

LtCol(Dr) Glenn Burns, MD, FACEP is a board certified emergency physician and Associate Professor of Emergency Medicine currently engaged in a Medical Toxicology Fellowship at The Ohio State University / Nationwide Children’s Hospital.  He holds academic appointments at four different universities, including honorary international faculty at the Israeli Defense Force Medical School in Jerusalem Israel.  During his 10 years as an emergency physician, he served as the Commanding Officer of the 88th Emergency Services Flight at Wright-Patterson AFB, OH; as a full-time faculty member in the Department of Military and Emergency Medicine at the Uniformed Services University of the Health Sciences (USUHS) School of Medicine; and was assigned to US Special Operations Command, where he served as a physician with elite special operations units and deployed in support of various Joint Task Forces engaged in combat operations in around the world.

He remains actively engaged with key US partners in military medical stability operations and the development of training programs for point-of-injury care, disaster medicine, medical leadership and child/family reintegration in disaster response.  He has been an invited speaker on these topics at conferences in Tel Aviv Israel, Toulon France, Bangkok Thailand, Kathmandu Nepal, Singapore, Washington DC, San Antonio TX, San Francisco CA and Philadelphia PA; and he has chaired national committees on military graduate medical education as well as disaster response and planning.   He has published on medical leadership, medical education, blast injury, tactical combat casualty care, mass casualty response and point-of-injury care.  

Dr. Burns is also a rated Flight Surgeon and Air Force certified International Health Specialist, and has deployed in support of numerous humanitarian assistance/disaster response operations as well as medical readiness exercises and diplomatic medical assignments throughout the world. He has partnered with several universities to support development of international medical education programs and with various federal agencies for his expertise in medical stability operations.  His clinical and research interests include toxicology and weapons of mass destruction, mass casualty and point-of-injury care, critical care, international and humanitarian medicine as well as medical leadership.  He is married to an Air Force pediatric neurologist and has three children. 


Vice President
Nancy Onisko, DO
University of Texas Southwestern Medical Center

Nancy Onisko, D.O., FACEP is a Toxicology Fellow and Assistant Professor of Surgery in the Division of Emergency Medicine at the University of Texas Southwestern Medical Center and Parkland Health and Hospital System in Dallas, Texas.  Her areas of interest include toxinology (the study of venomous animals and poisonous plants), new drugs of abuse, international toxicology and the advancement of medical toxicology as a specialty. 

Dr. Onisko earned a Bachelor of Science degree in Psychology from Michigan State University.  After college, she spent 5 years working as a Clinical Research Associate at the University of California at San Diego before pursuing her dream of becoming a physician.  She graduated from Midwestern University, Arizona College of Osteopathic Medicine in Phoenix, Arizona in 2003.  She then completed her internship at Arrowhead Regional Medical Center in Colton, California in 2004 and her residency in Emergency Medicine at Wayne State University and Detroit Receiving Hospital in Detroit, Michigan in 2007.  

Dr. Onisko is board certified in Emergency Medicine and spent 5 years practicing community-based emergency medicine in California before returning to academia as a toxicology fellow and attending physician at Parkland Hospital.  Her passions outside of medicine include international travel, tennis, music, photography and animal rescue.


Gregory LaSala, MD
Drexel University College of Medicine

Gregory LaSala is a Clinical Toxicology fellow at Drexel University College of Medicine and an attending physician at Penn State University Medical Center. He did his Emergency Medicine training at Penn State University and medical school at American University of the Caribbean in Saint Martin. His professional interests are graduate medical education and occupational toxicology. His hobbies are basketball, surfing, cooking and relaxing.



Rita McKeever, MD
Drexel University College of Medicine


Rita McKeever is a Medical Toxicology fellow at the Drexel University College of Medicine located in Philadelphia, Pennsylvania. She completed residency training in Emergency Medicine at Drexel University and currently is an attending in Emergency Medicine at the Mercy Health System.  Her professional interests include drugs of abuse and graduate medical education.  Her hobbies include cooking, travel, and spending time with friends and family-especially her five nieces and nephews.