UMM logo

Sleep Disorders Center

Physicians and Staff

The University of Maryland Sleep Disorders Center treatment team features specialists from a broad range of medical disciplines, which includes the areas of pulmonary diseases, otolaryngology, psychiatry, dentistry, and pediatric and adult neurology.

They work together to provide the best possible care for patients. Below is information on some of the principal team members, all of whom are on the faculty of the University of Maryland School of Medicine.


Steven M. Scharf, M.D. Ph.D.

Dr. Scharf is the medical director of the University of Maryland Sleep Disorders Center. He is board certified in internal medicine, pulmonary medicine, and sleep medicine and is a professor of medicine at the University of Maryland School of Medicine. He is responsible for the overall management of the Center, the sleep laboratory and the clinical policies. He is a nationally recognized expert in breathing problems at night.


Allan Krumholz, M.D.

Dr. Krumholz is the associate medical director of the University of Maryland Sleep Disorders Center. He is board certified in neurology and epilepsy, is a professor of neurology at the University of Maryland School of Medicine and is the director of the Maryland Epilepsy Center. He is responsible for overseeing the neurological care of patients with sleep disorders. He is a nationally recognized epilepsy expert.


Muhammad Alattar, M.D.

Dr. Alattar is a new member of the sleep disorders center. He is a trained pulmonologist, with an interest in all aspects of sleep disorders.


Domenick Coletti D.D.S., M.D.

Dr. Coletti is a member of the Department of Oral and Maxillofacial Surgery at the University of Maryland Medical Center. He is board certified in his field, and has both a medical and dental background. He has expertise in upper/lower jaw surgery for the treatment of breathing problems at night.


William Davidson, D.D.S.

Dr. Davidson is the chief - emeritus of the Division of Orthodontics and a professor of dentistry at the University of Maryland Dental School. He has expertise in making and fitting dental devices for the treatment of sleep apnea.


Jeanne-Geiger Brown, Ph.D., R.N.

Dr. Geiger Brown is a sleep researcher with an interest in sleep and sleep deprivation in nursing personnel. She also participates in our clinical program. With a background as a psychiatric nurse specialist she has developed a clinic devoted to cognitive behavioral therapy in patients with insomnia. This clinic specializes in non-drug treatment of insomnia as a symptom in a number of sleep disorders.


Edward Grace, D.D.S.

Dr. Grace is chief of the facial pain clinic and professor of dentistry at the University of Maryland Dental School. He has expertise in making and fitting dental devices for the treatment of sleep apnea.


Jeffrey Hasday, M.D.

Dr. Hasday is the director of the Division of Pulmonary and Critical Care at the University of Maryland Medical Center. He is board certified in internal medicine and pulmonary diseases and is a professor of medicine at the University of Maryland School of Medicine. He has expertise in breathing problems at night.


Janet Lam, M.D.

Dr. Lam is a board-certified pediatrician and neurologist. She works in all aspects of sleep disorders, with a special interest in neurological disturbances and sleep disorders in children.


Suzanne Lesage, M.D.

Dr. Lesage is a board-certified neurologist and sleep specialist who has recently joined the faculty of our sleep center. In addition to the treatment of all facets of sleep medicine, she has a special interest and expertise in the treatment of Restless Legs Syndrome, a common and distressing neurological condition.


Kalpesh Patel, M.B.B.S.

Dr. Patel is a board-certified internist trained in sleep disorders who has recently joined our faculty. He is skilled in all aspects of the evaluation and management of a variety of sleep disorders.


Rodney Taylor, M.D.

Dr. Taylor is a member of the Department of Otorhinolaryngology (ear, nose and throat) at the University of Maryland Medical Center and is board certified in this field. He is also an assistant professor of surgery at the University of Maryland School of Medicine. He has expertise in the surgical treatment of sleep apnea and swallowing disorders at night.


Avelino C. Verceles, M.D.

Dr. Verceles is a member of Division of Pulmonary and Critical Care at the University of Maryland Medical Center. He is board certified in internal medicine and pulmonary diseases, and maintains board eligibility in the specialty of sleep medicine. Dr. Verceles is an assistant professor of medicine at the University of Maryland School of Medicine and has expertise in breathing problems at night.


Jeffrey Wolf, M.D.

Dr. Wolf is a member of the Department of Otorhinolaryngology (ear, nose and throat) at the University of Maryland Medical Center. He is board certified in this field and is an assistant professor of surgery at the University of Maryland School of Medicine. He has expertise in the surgical treatment of sleep apnea.


Janet Hansen R.N., M.S.N., C.R.N.P.

Ms. Hanson is a nurse practitioner specializing in sleep disorders. She is skilled in the management of a variety of sleep disorders, and is an integral part of the center. Her specialized interests are compliance with treatment for sleep apnea, and the treatment of insomnia.


This page was last updated on: January 15, 2008.

For more information or to arrange for a sleep consultation for adults, please call 410-706-4771. For children, call 410-328-3363.