Dr. Lenz is a general nephrologist who serves as Professor of Clinical Medicine at the University of Miami in Miami, Florida. Dr. Lenz has (co)authored some 50 peer-reviewed journal articles, he participated in both federally and industry-funded clinical trials and served on data safety monitoring boards.

Dr. Lenz is Medical Director of Inpatient Dialysis, UHealth Tower and Jackson Memorial Hospital and Medical Director of DaVita North Miami Outpatient Dialysis Center, he served as Interim Chief of the Division of Nephrology and Hypertension for three years and now is Vice Chair of Medicine. For more than a decade, Dr. Lenz has been the Director of the Nephrology Fellowship Training Program at Jackson Memorial Hospital, where he trained some 60 fellows over the past 13 years.