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Monday–Friday, 9:00 a.m.–8:00 p.m.

After-Hours Appointments Available


Delta Sleep Center of Long Island works closely with you, your primary care physician, and other specialists. Our doctors have worked with cardiologists, dentists, otolaryngologists, neurologists, and even bariatric (weight loss) surgeons. We look forward to the privilege of participating in your care, and invite you to visit our convenient mid-island location in Commack, New York.

Dr. Jonathan S. Lown

Dr. Jonathan S. Lown

Dr. Lown is a highly regarded board-certified physician. He is certified in the areas of sleep, internal medicine, and lipidology. In 2012, he was selected for the Patients' Choice Award, an honor only enjoyed by 5% of the county's 830,000 active doctors that year.

Dr. Lown is dedicated to raising awareness of both medically diagnosed sleep disorders and the importance of quality sleep, using your history to help you understand the present situation. He remains passionate about new research in the field, and always has fresh ideas that continue to shape and improve care.

Dr. Arthur Feigenbaum

Dr. Feigenbaum is a member of the American Academy of Dental Sleep Medicine (AADSM), and is committed to offering alternative treatments to people suffering from snoring and obstructive sleep apnea (OSA). For more than 25 years, Dr. Feigenbaum has fabricated oral appliances to resolve patient problems with TMJ, bruxism, and the like.

Dr. Arthur Feigenbaum's unique products have improved the health and quality of life for countless people who suffer from sleep-disordered breathing. His goal is to provide each patient with a high quality, minimally invasive device that prevents snoring and sleep apnea.

Dr. Arthur Feigenbaum

Dr. Brijesh Chandwani DMD, BDS, FOP
Diplomate, American Board of Orafacial Pain

Dr. Brijesh Chandwani is board certified in Orafacial Pain and his focus is on management of complex facial pain disorders.  He currently holds an academic position as Adjunct Associate Professor in the Depart of Diagnostic Sciences at Tufts University, were he also did his dental training (DMD) and post graduate fellowship training in Temporomandibular Disorders and Sleep Apnea. 

He completed his Acupuncture Training from Harvard Medical School in Boston and has authored a number of publications that have been presented at national conferences on Headaches and Bruxism. There is a clear association between pain disorders and sleeps disorders, and hence the integration of pain management is key to optimum care of every patient at Delta Sleep Center of Long Island.