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.
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.
DR. PHILLIP KORENBLAT
Dr. Phillip Korenblat was the founder of The Clinical Research Center, retiring in 2019.
Dr. Korenblat was a Professor of Clinical Medicine at Washington University School of Medicine specializing in Asthma, Allergy & Clinical Immunology. He obtained his undergraduate and Doctor of Medicine degrees from the University of Arkansas. Following graduation, Dr. Korenblat served an internship at the Jewish Hospital of St. Louis followed by a tour of military service. He returned to Jewish Hospital to complete his residency training, and then entered a fellowship at the Scripps Clinic & Research Foundation in La Jolla, California. Upon completion of his fellowship, Dr. Korenblat returned to St. Louis and established his private practice. Dr. Korenblat was an accomplished clinical investigator and educator who was named the “Outstanding Teaching Allergist” for 2003 by the American Academy of Allergy, Asthma & Immunology and the American College of Allergy, Asthma & Immunology. He was honored to receive the “Distinguished Clinician Award” for 2009 from the American Academy of Allergy, Asthma & Immunology and “Lifetime Achievement Master Physician Award” in 2012 from Barnes Jewish Hospital medical staff.
He was board certified in Internal Medicine, and Allergy & Clinical Immunology, and was a member of a number of professional societies, which include American Academy of Allergy, Asthma & Immunology; Americana College of Allergy, Asthma & immunology; American College of Physicians; American Thoracic Society; American Medical Association; and the Missouri State Medical Association.
Dr. Korenblat is a Certified Physician Investigator (C.P.I.) through the Academy of Pharmaceutical Physicians & Investigators and has completed over 300 clinical research studies. He has published extensively and participates in community activities including the Asthma & Allergy Foundation of America, and the American Lung Association. Dr. Korenblat is listed in “Best Doctors in America,” as well as “America’s Top Doctors,” and has received the Distinguished Service Award from the Washington University Medical Center Alumni Association.