All testing is overseen by a board-certified internal medicine physician and carried out in a government approved testing laboratory.

All testing is overseen by a board-certified internal medicine physician and carried out in a government approved testing laboratory.

Meet Our Team

Dr. Gregory Levitin

Dr. Gregory Levitin, MD is a board-certified Otolaryngologist-Head and Neck Surgeon and a Fellow of the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS). Dr. Levitin specializes in the non-surgical management of sinus, snoring, and throat disorders and is a nationally and internationally recognized expert in the treatment of vascular birthmarks. He has been in practice in Manhattan for over 20 years.

As a leading specialist, Dr. Levitin is a regularly featured expert in mainstream media and has authored several book chapters, journal articles, and abstracts, and has presented nationally and internationally in the field of Otolaryngology. He is also the recipient of many awards including Castle Connolly Top Doctor, New York Times Best Doctors, Super Doctors New York City, New York Magazine Top Doctors, and Best Doctors in America.

Dr. David Melnick

Dr. David Melnick is the Chief Medical Officer at Spero Therapeutics in Cambridge, MA. Dr. Melnick has 18 years of experience in anti-infective drug development. Prior to joining Spero Therapeutics, Dr. Melnick served as Vice President of Clinical Development for Anti-Infectives at Allergan until 2015. In that capacity, he oversaw the development and regulatory approval of Teflaro®, Avycaz®, and Dalvance® in the United States. Prior to Allergan, Dr. Melnick served fifteen years at AstraZeneca in various levels of increasing responsibility, most recently as Vice President of Clinical Development for Anti-Infectives.

Dr. Daniel Sahlein

Dr. Daniel H. Sahlein received his medical degree from the Albert Einstein College of Medicine in New York City. He completed the NYU Langone Medical Center triple boards program from September 2011 until June 2014, completing two residencies (neurology and radiology) as well as two fellowships (diagnostic neuroradiology and interventional neuroradiology). Dr. Sahlein was an assistant professor of radiology in neurosurgery and neurology at Columbia University Medical Center for three years.

Dr. Eric Schweiger

Eric Schweiger, M.D. is the founder and C.E.O. of Schweiger Dermatology Group, the largest dermatology practice in the Northeast with over 60 offices throughout New York, New Jersey and Pennsylvania. Dr. Schweiger received his medical degree at the Albert Einstein College of Medicine in New York City and did his post-doctoral training at New York University and University of Kansas Medical Center. Dr. Schweiger currently serves as Associate Clinical Professor of Dermatology at Mount Sinai Medical School in New York City.

Dr. Alon Dagan

Dr. Alon Dagan is a board certified emergency medicine physician with a background in biomedical engineering. In addition to active clinical practice at Beth Israel Lahey Health in Boston, MA, he is an instructor of emergency medicine at Harvard Medical School and a research affiliate at the Massachusetts Institute of Technology. He received his bachelor of science in biomedical engineering at the University of Connecticut School of Engineering and his medical degree at the University of Connecticut School of Medicine. He completed his residency training at the Harvard Affiliated Emergency Medicine Residency at Beth Israel Deaconess Medical Center in Boston.