Keystone Clinical Team

Cherian Verghese, MD

Principal Investigator

Dr. Cherian Verghese is a physician-investigator, who has dedicated his career to developing new medications to treat neuropsychiatric disorders. After earning his medical degree in Bombay, India, he completed training in Psychiatry and Neurology, and received Board Certification in India, UK, and USA. He spent the early part of his career at the Medical College of Pennsylvania in academic psychiatry. He completed a Fellowship in Psychopharmacology Research, on the neuroendocrinology of polydipsiahyponatremia in persons with schizophrenia. He served as Inpatient Director and Associate Chair of psychiatry at the Albert Einstein Medical Center in Philadelphia. Dr. Verghese is a proud family man, enjoys travel and outdoor activities, as well as random facts and humor. In 2003, he founded Keystone Clinical Studies (KCS) as an independent clinical trial site with his brother, Tom Verghese as co-founder, and continued to grow the site after Tom passed away in 2019. He has been the Principal Investigator on over 130 clinical trials to date and has been instrumental in the FDA approval of medications in over 10 different indications.

Stephen Litman, MD, HMDC

Sub-Investigator

Dr. Litman joined the KCS team in June 2019 as a sub-investigator with 30+ years of clinical experience as an internist and geriatrician. He has extensive experience with the geriatric population through his roles as a primary care physician, hospitalist, medical director of an inpatient dementia unit, and hospice medical director. His sense of humor and dedication to patient care and safety, helps put our new patients at ease.