Philadelphia Ear, Nose and Throat Associates: PENTA

Our Physicians


Our Physicians


Robert Thayer Sataloff, MD, DMA, FACS, FCCP

Laryngologist - Professional voice specialist

Dr. Sataloff is Professor and Chairman, Department of Otolaryngology-Head and Neck Surgery and Senior Associate Dean for Clinical Academic Specialties, Drexel University College of Medicine.  He is also Adjunct Professor in the department of Otolaryngology – Head and Neck Surgery at Thomas Jefferson University, as well as Adjunct Clinical Professor at Temple University and the Philadelphia College of Osteopathic Medicine; and he is on the faculty of the Academy of Vocal Arts.  He serves as Conductor of the Thomas Jefferson University Choir.  Dr. Sataloff is also a professional singer and singing teacher.  He holds an undergraduate degree from Haverford College in Music Theory and Composition; graduated from Jefferson Medical College, Thomas Jefferson University; received a Doctor of Musical Arts in Voice Performance from Combs College of Music; and he completed Residency in Otolaryngology - Head and Neck Surgery and a Fellowship in Otology, Neurotology and Skull Base Surgery at the University of Michigan.  Dr. Sataloff is Chairman of the Boards of Directors of the Voice Foundation and of the American Institute for Voice and Ear Research.  He also has served as Chairman of the Board of Governors of Graduate Hospital; President of the American Laryngological Association, the International Association of Phonosurgery, the Pennsylvania Academy of Otolaryngology – Head and Neck Surgery, and The American Society of Geriatric Otolaryngology, and in numerous other leadership positions.  Dr. Sataloff is Editor-in-Chief of the Journal of Voice; Editor-in-Chief of Ear, Nose and Throat Journal; Associate Editor of the Journal of Singing, and on the editorial boards of numerous otolaryngology journals. He has written over 1,000 publications, including 62 books, and he has been awarded more than $5 million in research funding.  He has invented more than 75 laryngeal microsurgical instruments distributed currently by Integra Medical, ossicular replacement prostheses produced by Grace Medical, and novel laryngeal prostheses with Boston Medical.  His medical practice is limited to care of the professional voice and to otology/neurotology.  Dr. Sataloff has developed numerous novel surgical procedures including total temporal bone resection for formerly untreatable skull base malignancy, laryngeal microflap and mini-microflap procedures, vocal fold lipoinjection, vocal fold lipoimplantation, and others.  Dr. Sataloff is recognized as one of the founders of the field of voice, having written the first modern comprehensive article on care of singers, and the first chapter and book on care of the professional voice, as well as having influenced the evolution of the field through his own efforts and through the Voice Foundation for nearly 4 decades.  Dr. Sataloff has been recognized by Best Doctors in America (Woodward White Athens) every year since 1992, Philadelphia Magazine since 1997, and Castle Connolly’s “America’s Top Doctors” since 2002.

Curriculum Vitae


Karen M. Lyons, MD

General otolaryngologist

Dr. Lyons is Clinical Associate Professor of Otolaryngology–Head and Neck Surgery in the Department of Otolaryngology–Head and Neck Surgery at Drexel University College of Medicine. She graduated from the University of Pennsylvania in 1979 after having received her undergraduate degree in mathematics from the University of Connecticut. She completed her residency in otorhinolaryngology at the Hospital of the University of Pennsylvania in 1983. Dr. Lyons became assistant professor of otolaryngology at Harvard Medical School/Massachusetts Eye and Ear Infirmary. In 1985, she returned to Philadelphia and has practiced at Pennsylvania Hospital, Northeastern Hospital,Graduate Hospital and Thomas Jefferson University Hospital. She has been associated with our office since 1996. Her publications include works on evaluation of flap perfusion and on vocal fold physiology.

Curriculum Vitae


Dr. Brian McKinnon - Cochlear Implants

Brian McKinnon, MD, MBA, MPH, FACS

Otologist - neurotologist

Dr. McKinnon is an internationally recognized neurotologist. He has been involved in medical and resident teaching at the National Naval Medical Center/Walter Reid Army Medical Center Combined Otolaryngology Residency Program, Georgia Regency University, and the University of Tennessee. In addition to his scientific research on cochlear implants, he is known widely for his business contributions to the establishment of sustainable cochlear implant programs for adults and children; and he serves as a consultant to several organizations including the FDA. His 16 years of military service (which included activity not only as a flight surgeon, but also as a physician for the White House medical unit), followed by a decade as an academic otolaryngologist, have been combined with advanced business knowledge obtained through his MBA, and specialized knowledge of statistics obtained through his ongoing MPH studies. Brian McKinnon graduated from Boston University School of medicine, completed surgical internship with the National Naval Medical Center, Bethesda Maryland, spent five years as a US Navy flight surgeon; and completed otolaryngology residency at the Naval Medical Center, Portsmouth Virginia, and a neurotology fellowship at the University of Virginia. He is board certified in Otolaryngology-Head and Neck Surgery and in Neurotology. Dr. McKinnon received his MBA from Johns Hopkins University and recently completed his MPH at the University of Memphis.

During his internship in the Navy, Dr. McKinnon was invited to return after his utilization tour for general surgery residency, with further opportunity to pursue a CT/Vascular fellowship. Following internship, he received orders for Naval Flight Surgeon training at the Naval Aerospace Medical Institute, Pensacola, FL; and following that training, he was offered the unique opportunity to stay on at the Naval Aerospace Medical Institute as a Staff Naval Flight Surgeon.

While at the Naval Aerospace Medical Institute, Dr. McKinnon taught student Naval Flight Surgeons, became qualified as a hyperbaric chamber medical officer, and was the Medical Officer for the Landing Craft, Air Cushion (LCAC) Psychometric Testing Program. As one of the Medical Officers for the Repatriated Prisoner of War Project, he co-authored and published his first peer reviewed article on the maximal exercise tolerance of repatriated prisoners of war.

The Naval Aerospace Medical Institute had two unique functions, one of which was to review naval aviation mishap reports, and the second of which was to recommend waivers for complex or serious medical problems so that aircrew could return to flight duties. Both of these experiences gave him a unique education and understanding on how things go wrong in high-risk environments, and how some of those risks can be best mitigated. During that time, he decided to pursue an operational tour instead of returning to general surgery residency.

His operational tour was as the Senior Naval Flight Surgeon for Carrier Air Wing EIGHT, based at Naval Air Station Oceana, Virginia Beach, VA. This assignment gave Dr. Mckinnon the responsibility for the health and well being of over 2000 sailors and airmen and women who made up Carrier Air Wing EIGHT. He provided health care services from the desert outside Fallon, NV to the deserts of Kuwait along the Iraqi border, and from the waters of the Caribbean, to the Mediterranean and the Persian Gulf.  In addition to earning his Surface Warfare (Medical Department Officer) “wings” during the tour, Dr. Mckinnon became qualified as an FAA Aeromedical Examiner. Of the 26 months during which he was assigned to Carrier Air Wing EIGHT, he was deployed for nearly 14 months, participating in Operation Deliberate Force, and having his first and only experience as the medical officer on a combat medevac. 

After otolaryngology residency and neurotology fellowship, Dr. Mckinnon reported to the combined Otolaryngology residency at National Naval Medical Center and Walter Reed Army Medical Center as their neurotologist. He was based primarily at Walter Reed Army Medical Center, which afforded him the opportunity to build on a newly established cochlear implant program. The building of that program led him to complete an MBA.

Toward the end of his tour, Dr. McKinnon was asked to transition to an administrative role at National Naval Medical Center in TRICARE. This invitation was due to the success he had had in managing the Walter Reed Army Medical Center cochlear implant program and having completed his MBA. His new role would have led to promotion and increased administrative responsibilities. Frustrated with not being able to pursue research and publishing more actively, and being asked to assume an administrative role that would have meant significantly curtailing his clinical activities, he decided to transition to academic medicine.

At Georgia Regents University, he was able to establish both bone-anchored hearing device and Vibrant Sound bridge programs at the VA Hospital, and a financially sustainable adult and pediatric cochlear implant program, bone-anchored hearing device and Vibrant Sound bridge program at the University Hospital.

He continued similar clinical efforts during his time at the Shea Ear Clinic in Memphis in affiliation with the University of Tennessee, with the establishment of the only adult cochlear implant and bone-anchored hearing device programs in Western Tennessee.

Dr. McKinnon has developed a national and international reputation in the areas of socioeconomics and business of cochlear implant programs, and in thin film cochlear arrays. Reflecting these areas of expertise, he serves on the Audit Committees of the American Neurotology Society, and the America Otological Society, as a Consultant for the ENT Medical Devices Advisory Panel, Food and Drug Administration, and as a member of the State Board of Examiners in Speech-Language Pathology and Audiology. Because of his efforts working with Cochlear America and Oticon Medical to increase access to coverage for bone anchored hearing devices, Dr. McKinnon was appointed to the Tennessee Medical Society’s Insurance Issues Committee, and to the United Healthcare Physician Advisory Committee.

Dr. McKinnon’s pursuit of an MPH with a concentration in biostatistics came from recognition that he needed to have a better understanding of health policy, study design and data manipulation and interpretation.  He completed his MPH in the fall of 2016.


Dean A. Drezner, MD


Dr. Dean A. Drezner, MD is Assistant Professor in the Department of Otolaryngology- Head and Neck Surgery at Drexel University College of Medicine. He has deep roots in Philadelphia. He received his B.A. at the University of Pennsylvania, his M.D. at Temple University Medical School and did his Otolaryngology residency at Temple University Hospital, finishing in 1989. He then "crossed the river" and practiced in New Jersey in both private and academic settings and was head of the division of Otolaryngology at Cooper Health System. He has been named "Top Doc" by US News and World Report, as well as in Philadelphia Magazine and in South Jersey Magazine numerous times.

Dr. Drezner's scope of practice includes adult, pediatric and geriatric ear,nose and throat care, thyroid surgery, sinus surgery, as well as evaluation and treatment of hearing loss, tinnitus, allergies, sleep apnea, hoarseness and swallowing disorders. He has a particular interest in patients with persistent or recalcitrant symptoms such as postnasal drip, unsteadiness and a sensation of a lump in the throat.

Curriculum Vitae


Mary L. Worthen, MD


Mary L. Worthen, MD is Instructor in the Department of Otolaryngology- Head and Neck Surgery at Drexel University College of Medicine. She received her medical degree from Wake Forest University School of Medicine and completed residency at the University of Louisville School of Medicine. She has focused her practice on general and geriatric otolaryngology and has special interest in facial plastic surgery, disorders of the nose and sinuses, allergy, and head and neck surgery. She cared for adults and children. In addition to being an outstanding otolaryngologist, Dr. Worthen is also an accomplished artist specializing in pyrography (woodburning).

Aykut Unsal Photograph.jpg

Aykut A. Unsal, DO, M

will be joining the practice on August 19, 2019


Dr. Unsal is Assistant Professor of Otolaryngology – Head and Neck Surgery (anticipated) at Drexel University College of Medicine.  He completed his pre-medical education at Boston College where he studied biology, computer science and music.  Following his undergraduate studies, Dr. Unsal received a Masters degree at the University of Medicine and Dentistry of New Jersey during which time he also studied Biomedical Engineering at the New Jersey Institute of Technology.  He then received his medical degree and completed residency in Otolaryngology and Facial Plastic Surgery at the University of Medicine and Dentistry in Stratford, New Jersey (now known as Rowan University School of Osteopathic Medicine/Thomas Jefferson University Health System).


Following residency, Dr. Unsal completed an additional year of fellowship training in advanced nasal, sinus and skull base surgery at the Medical College of Georgia with world-renowned surgeon Dr. Stilianos Kountakis.  During fellowship, Dr. Unsal mastered cutting-edge techniques in endoscopic, minimally invasive surgery.  Dr. Unsal has published numerous articles in peer-reviewed journals in the field of Rhinology and has presented research at national conferences annually.


Dr. Unsal has focused his practice to the treatment of complex sinus and nasal diseases, skull base surgery, and facial plastic surgery (particularly rhinoplasty).  Beyond medicine, Dr. Unsal is also an avid software developer and is the founder of Scrubbed, a popular clinical app for medical professionals.  In his spare time, he enjoys the outdoors and traveling with his family.