He is especially interested in lupus nephritis and autoimmune disorders. His professional affiliations include UF Health Pathology Laboratories and North Florida/South Georgia Veterans Health System. United Healthcare Compass, United Healthcare Navigate, and United Healthcare HSA are among the insurance carriers that Dr. Croker takes. Before completing his residency at Duke University Medical Center, Dr. Croker attended medical school at Duke University School of Medicine. Dr. Croker's distinctions include: American Cancer Society Fellowship and Florida Distinguished Service Medal.