ENTA makes every effort to maintain normal operations to service our patients; however due to the potential for inclement weather, many ENTA offices will only have morning hoursĀ or will be closing early. Please call your local office number or 1-855-ENTA-DOC for up to date information on closures. Remember, you can still Book Online, Anytime by clicking the button above.

Our Audiologists

Mary O'Sullivan, Au.D, F-AAA

Mary O'Sullivan, Au.D, F-AAA

Mary O’Sullivan is a graduate of Herbert H. Lehman College, earning a Bachelors degree in Speech and Hearing Science in 1998, and  a Masters degree in Audiology in 2001. She then went on to obtain her Doctorate degree in Audiology from Arizona School of Health Sciences.

Dr. O’Sullivan is a fellow of the American Academy of Audiology. She is licensed in New York State as an Audiologist and a Hearing Aid dispenser, and has been employed by ENT and Allergy since 2003.

Dr. O’Sullivan specializes in the audiological evaluation of the pediatric to geriatric population. She also performs vestibular evaluations for dizziness, site of lesion testing for symptoms of tinnitus and imbalance, and hearing aid dispensing using the latest technology. Dr. O’Sullivan enjoys the challenges of being involved in all aspects of Audiology at ENTA.

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Languages spoken:
  • English


984 North Broadway
4th floor, suite 400
Yonkers, NY, Westchester County

Tel: (914) 963-8588

Fax: (914) 963-0253