Meet the CRC Staff
Dr. Jeffrey Tillinghast
Dr. Jeffrey Tillinghast is an Associate Professor of Clinical Medicine at Washington University School of Medicine specializing in Asthma, Allergy and Clinical Immunology. He received his undergraduate degree in biochemistry from State University School of Medicine of New York at Albany graduating summa cum laude. Dr. Tillinghast pursued medicine at Washington University School of Medicine completing his internship and residency in Internal Medicine at Barnes Jewish Hospital.
Dr. Tillinghast practices medicine in his private practice Associated Specialists in Medicine.
Dr. Barbara Jost
Dr. Jost graduated from Saint Louis University Medical School in 1998. She completed her residency in Internal Medicine and fellowship in Allergy and Immunology at Washington University School of Medicine in 2004. During her fellowship she was the chief editor and contributing author of The Washington Manual: Allergy, Asthma, and Immunology Subspecialty Consult . She has also published articles on penicillin allergy and Alzheimer’s disease.
Before entering the field of medicine, she studied biomedical engineering at Northwestern University. During her 7 year career as a biomedical engineer she developed software for cardiology applications and devised computerized epidemiological models for the pharmaceutical industry.
She has served as a volunteer proctor for Maryville University’s Nurse Practitioner program, a speaker in Rockwood School District’s Partners in Education, and as a short-term medical missionary. She is married and has a son and a daughter. Her free time is devoted to family. You will also find her hiking with her dogs, traveling, and dabbling in the kitchen.
Nancy Umbeck, RN, MSN
Nancy is our Executive Director and has been with the CRC center since 1998. She has extensive experience as a Study Coordinator however, in 2008, she began her new role as Executive Director. She is responsible for contracts, budgets and oversees all aspects of the CRC.
Maggie Ellington, RN, BSN
Maggie is our Clinical Director and has been with the CRC since 2002. Maggie began as a Study Coordinator and moved into the role of Clinical Director in 2010. She continues to serve as a Study Coordinator, when the need arises but is primarily in charge of clinical operations, pre study site visits, and office management.