Dr. Geller is board certified in Internal Medicine and Endocrinology, Diabetes and Metabolism.

He received his medical degree from the University of Southern California and post-doctoral training at Cedars-Sinai Medical Center in Los Angeles. He completed an NIH fellowship in Clinical Research and received a certificate in Clinical Investigation from the UCLA General Clinical Research Center.

In addition to full-time practice, Dr. Geller is the past Clinical Chief of the Division of Endocrinology, Diabetes & Metabolism at Cedars-Sinai Medical Center, an instructor at the UCLA School of Medicine, and a member of the Cedars-Sinai Thyroid Cancer Center.

He has lectured at national symposia and authored numerous publications in the field of Endocrinology.