Dr. Mark Greenberger

Stuart Sprague, DO, a nephrologist at Endeavor Health, brings decades of clinical experience and research to the care of patients with kidney disease. His work spans rare diseases, mineral metabolism and complex diagnostic challenges. Dr. Sprague is known for a patient-centered approach, especially for those who don’t fit typical treatment algorithms, and he continues to explore innovations in dialysis and artificial kidney development. Dr. Sprague is rated as a Distinguished provider by MediFind in the treatment of Hypercalcemia. His top areas of expertise are Chronic Kidney Disease, Hypercalcemia, Milk-Alkali Syndrome, Parathyroidectomy, and Kidney Transplant.

Erica Sinsheimer is an Internal Medicine provider in Skokie, Illinois. Dr. Sinsheimer is rated as a Distinguished provider by MediFind in the treatment of Hypercalcemia. Her top areas of expertise are Generalized Resistance to Thyroid Hormone, Familial Hyperthyroidism due to Mutations in TSH Receptor, Hyperparathyroidism, and Milk-Alkali Syndrome.

Rajan H. Patel, MD, an internal medicine physician at Endeavor Health, provides primary care for adults focused on prevention, wellness and chronic disease management. He develops individualized care plans to help patients maintain long-term health and manage complex conditions. Dr. Patel is rated as a Distinguished provider by MediFind in the treatment of Hypercalcemia. His top areas of expertise are Bronchitis, Sitosterolemia, Infant Hyperglycemia, and High Cholesterol.