Dr. Karen Schneider is an assistant professor of pediatrics at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include pediatric emergency medicine and tropical medicine.

After Dr. Schneider received her undergraduate degree from Molloy College, she earned her medical degree from the State University of New York Health Science Center at Brooklyn. She completed her pediatric residency at Yale Children's Hospital and performed her pediatric emergency medicine fellowship at Johns Hopkins. She joined the faculty in 2002. With an interest in international medicine, Dr Schneider completed a Masters of Public Health at the Johns Hopkins Bloomberg School of Public Health. 

Dr. Schneider is a member of the Catholic order the Sisters of Mercy. She is well known for her post-disaster work in Haiti. She is a director of the elective in tropical medicine for Johns Hopkins medical students and residents that takes them to Guyana, Haiti, Kenya and Nigeria.

Dr. Schneider's research interests include sedation recovery in children, tropical medicine, medical ethics, disaster preparedness, and international health.

Because of her international work and experience, Dr Schneider has been invited to lecture and give presentations at nine Colleges and Universities to talk to faculty and students about her medical experiences in developing countries. She has been invited to Ireland, Australia and the Solomon Islands and has been called upon twice to present at the United Nations: in 2008 at a conference as a spokeswoman regarding the plight of children in the development of Millennium Development Goals and in 2013 as a panelist at a UNICEF Conference regarding children's global health. Dr Schneider has received 6 Honorary Doctorates for her humanitarian work.

Dr. Schneider received the Cunningham Award, presented to one Sister of Mercy out of 7,000 each year, for creating the pediatric tropical medicine elective and serving economically disadvantaged children. She is a recipient of the Martin Luther King Jr. Award for Community Service. This award recognizes outstanding commitment to volunteer service by members of the Johns Hopkins community. She serves on the American Academy of Pediatrics CHILDisaster Network Team and is a member of the American Academy of Pediatrics, the Ambulatory Pediatric Association and Amnesty International.