Our Physicians

At ACENT, each ear, nose and throat (ENT) doctor on our Anchorage team is board certified in Otolaryngology – Head & Neck Surgery. This means they have met the American Board of Otolaryngology's high professional standards of training and demonstrated knowledge in otolaryngology – head and neck surgery. In addition, Dr. Ellerbe is board-certified in Facial Plastic and Reconstructive Surgery, having met that board's stringent requirements.

Each of our doctors brings to our team his own special interests and focused training, allowing our practice to successfully treat a wider range of patients and conditions. To meet with one of our specialists, we encourage you to request a consultation online or call ACENT at (907) 279-8800 to schedule an appointment.


Dr. Dwight M. Ellerbe

Dr. Dwight M. Ellerbe

Dr. Ellerbe is board certified in Pediatrics, Facial Plastic and Reconstructive Surgery, and Otolaryngology – Head & Neck Surgery. He began his career as a pediatrician, then completed a residency in Otolaryngology – Head & Neck Surgery, followed by a clinical fellowship in Facial Plastic and Reconstructive Surgery at Johns Hopkins School of Medicine. Dr. Ellerbe served his country in the U.S. Air Force, retiring as a colonel. In addition to his work, his passions include sailing and fishing.

Read Dr. Ellerbe's full bio


Dr. Stephen B. Schaffer

Dr. Stephen B. Schaffer

Dr. Schaffer is board certified in Otolaryngology – Head & Neck Surgery. After earning a master's degree in choral music from University of Arizona, he graduated with honors from medical school at the same institution. Dr. Schaffer completed his residency in Otolaryngology — Head & Neck Surgery at Tulane University Medical Center in New Orleans. His interest in singing informs his specialized interest in the treatment of voice disorders at ACENT.

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Mark B. Lorenz, MD

Dr. Mark B. Lorenz, MD

Dr. Lorenz is board certified in Otolaryngology – Head & Neck Surgery. A magna cum laude graduate of Notre Dame University, Dr. Lorenz earned his medical degree from The Ohio State University College of Medicine. He then completed a residency in Otolaryngology — Head & Neck Surgery at the University of Michigan in Ann Arbor. He is fellowship trained and board certified in neurotology, which is a subspecialty concerned with treating neurological disorders of the ear. He joined the ACENT team in 2015.

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Christopher Kowalski, MD

Christopher Kowalski, MD

Dr. Kowalski earned his medical degree from the University of Iowa College of Medicine in 2013 after graduating with honors from the University of Wisconsin. He completed his residency in Otolaryngology—Head & Neck Surgery at the University of Iowa in Iowa City, IA in 2018. Dr. Kowalski is trained and practices in all aspects of otolaryngology including sinus surgery, otologic surgery, and pediatric otolaryngology.

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John Kokesh, MD

John Kokesh, MD

John Kokesh, MD, completed medical school at the University of Washington in 1988. He completed 2 years of General Surgery training at Virginia Mason Medical Center in Seattle, Washington, and then in 1994 completed residency in Otolaryngology—Head & Neck Surgery at the University of Washington.

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Jennifer Mitchell, MD

Jennifer Mitchell, MD

Dr. Mitchell is board certified in Otolaryngology—Head & Neck Surgery. After earning a doctorate in bio analytical chemistry at the University of New Mexico, she went on to complete a doctorate in medicine at the same institution, graduating with honors from both.

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