Dr. Steiner is a 1977 University of Michigan graduate, and he earned his medical degree from the University of Missouri-Columbia in 1981. He completed his internal medicine residency at the University of Cincinnati in 1984.

He completed his endocrinology and metabolism from George Washington University in 1986, which is the same year he started practicing medicine.

Dr. Steiner is the founder and medical director of the Diabetes Wellness Center of Atrium Medical Center (Atrium). He also oversees the inpatient Glycemic Control Team at the hospital. He also is the founder and medical director of the Middletown Osteoporosis Center. 

With an active interest in thyroid disorders, including nodules, cancer, hyperthyroidism and hypothyroidism, Dr. Steiner performs several hundred Ultrasound Guided Fine Needle Aspiration thyroid biopsies of thyroid masses each year.

He is certified to treat thyroid cancer and hyperthyroidism and to administer I 131. 

Dr. Steiner is a fellow of the American College of Endocrinology, and he is a member of The Endocrine Society and The American Diabetes Association. He is a member of the Butler County Medical Society, and previously served as president, vice president and treasurer. 

He has been on the medical executive committees of various local hospitals, including Atrium, for the last 20 years. He also serves on various quality control committees.

Dr. Steiner is board certified in Endocrinology.  

Dr. Steiner is accepting new patients and continues to practice endocrinology, diabetes and metabolism. Dr. Steiner has privileges at Atrium Medical Center.