Dinaz Irani, MD

Michael J. Pitman MD is Chief of the Division of Laryngology at the Columbia University Medical Center and the Director of The Center For Voice And Swallowing. Dr. Pitman is an internationally recognized expert in voice restoration, conservation and care of the professional voice as well as in the care of swallowing and airway disorders. Dr. Pitman is also a NIH funded clinician scientist who has performed and published extensive research. Dr. Pitman has received numerous grants and patents for pioneering research in the field of Laryngology. Dr. Pitman has been voted by his peers as one of the “Best Doctors in America”, as well as to New York Magazine “Top Doctors” and New York Times “SuperDocs”. He has served as President of the New York Laryngological Society and Secretary of the American Broncho-Esophagological Society and he lectures extensively both nationally and internationally. Dr. Pitman’s areas of clinical expertise include illnesses such as vocal fold paralysis, early laryngeal cancer, cricopharyngeal dysfunction, spasmodic dysphonia, laryngopharyngeal reflux, chronic cough, laryngotracheal stenosis, vocal fold polyps, nodules and cysts. Dr. Pitman is also known for the treatment of many of these disorders with minimally invasive, in-office procedures without the need for general anesthesia. Dr. Pitman received his medical degree from the Albert Einstein College of Medicine where he graduated as a member of the Alpha Omega Alpha Honor Society. He completed his otolaryngology residency at The New York Eye and Ear Infirmary and was a fellow in Laryngology and Care of the Professional Voice at Vanderbilt University Medical Center.

Dr. Haffey received his BA in Literature and Literary Studies in University of Colorado in 2002. He then obtained his DO degree in West Virginia School of Osteopathic Medicine in 2016. He completed his internship at Stony Brook Medicine-Southampton Hospital, followed by a residency in Physical Medicine and Rehabilitation at NewYork-Presbyterian Hospital/Columbia/Cornell in 2020. After his Fellowship focusing on Pain Medicine, Dr. Haffey joined Columbia University Medical Center in May 2021 and Weill Cornell Medicine in February 2025 up to present.

Dr. Callahan is an Assistant Professor of Medicine at Columbia University Medical Center. She received her medical degree from Rush Medical College and completed residency training in Internal Medicine at Tulane University School of Medicine. She completed her Hospice and Palliative Medicine fellowship at the University of Pittsburgh Medical Center in 2018. She also received a Master’s Degree in Medical Education from the University of Pittsburgh. Dr. Callahan's clinical time is spent on the inpatient palliative care service at NewYork-Presbyterian/Columbia University Irving Medical Center and providing outpatient palliative care services at Herbert Irving Cancer Center. Her academic interests are focused on teaching communication and primary palliative care skills.