Geoffrey A. Block, MD, FASN is the Associate Chief Medical Director and Senior Vice President of Clinical Research and Medical Affairs at U.S. Renal Care.

Before joining U.S. Renal Care, Dr. Block served as the Vice President of Nephrology for Reata Pharmaceuticals, a pharmaceutical company developing innovative therapies to improve outcomes for patients with chronic kidney disease and other life-threatening conditions. Earlier, Dr. Block served as Director of Clinical Research and Partner at Denver Nephrology.

Over the last 20 years, Dr. Block has served as the principal or co-investigator for numerous clinical trials, and his work has been widely published in medical and nephrology research journals. Since 2000, he has been a manuscript reviewer for the New England Journal of Medicine, Journal of the American Medical Association, Journal of the American Society of Nephrology and American Journal of Kidney Disease, among several other journals.

Dr. Block received a Bachelor of Arts degree from Miami University of Ohio before earning his medical degree from the University of Cincinnati College of Medicine in Cincinnati, Ohio. He completed his residency and chief residency at the University of Cincinnati and his fellowship at the University of Michigan. He has most recently taught at the University of Colorado Health Sciences Center.