Our Staff

David G. Carr, BC-HIS – President

Board-Certified Hearing Instrument Specialist

H/A License: 14000007960
NPI: 1962694521


  • Board-Certified: Hearing Instrument Sciences, National Board for Certification in Hearing Instrument Sciences
  • Certified: Audibel, Starkey, Resound, Siemens, Oticon, Phonak, Widex, D.C. Electronics, Micro Tech
  • Continuing Education: Regularly exceeds minimum hours required by New York State


  • Member: Hearing Health Care Alliance of New York (two-term President), Founder of Help America Hear, Vice President of Enterprise Hearing Solutions, International Hearing Society
  • Volunteer: Hearing Protection Awareness, local health fairs

David’s message to his patients

“I’m committed to keeping abreast of the latest breakthroughs in hearing care, but I never forget that a professional’s personal qualifications—thoughtfulness, compassion and dedication—make the biggest difference in your world full of sound.

“As your hearing specialist, I will listen to you, learn from you and involve you in the process. It’s the only way to know which technology and programming are really right for you.

“Sharing knowledge with my colleagues is one of the most important benefits of belonging to professional organizations. I can exchange ideas, learn about new technologies and continually seek better ways of helping my patients.”

Dr. Mary K. Bohr, AU.D., AAA – Doctor Of Audiology – Director Of Audiology – Riverhead & Greenport

Doctor of Audiology

Doctor of Audiology – Licensed New York State; Hearing Aid Dispensing – Licensed New York State
Audio License: 002094-1
H/A License: 14000028367
NPI: 1871688556


  • Doctorate of Audiology, Salus University
  • Master of Science in Audiology, Adelphi University
  • Bachelor of Science in Communication Sciences & Disorders, Adelphi University


  • Fellow of American Academy of Audiology

Mary’s message to her patients

“I can’t think of a better vocation than one that rewards you with the absolute joy in someone’s eyes when they hear clearly for the first time. This is what drives me and gratifies me.

“I learn daily from—and with—my patients. I love what I do, and I am pleased to actively participate in continuing education.

“I have worked in several settings including hospitals, an ENT office and a school for the developmentally delayed. Each one provided a new learning experience, with patients ranging from pediatric to seniors. They are all rewarding, but each one has its own unique gratification.

“My number one priority is patient care. I am dedicated to helping my patients to hear and communicate effectively with their loved ones. This is not only my vocation, but my passion.”

Dawn M. Von Bargen, M.A., FAAA – Patchogue

Doctor of Audiology

Doctor of Audiology – Licensed New York State; Hearing Aid Dispenser – Licensed New York State
Audio License: 000910-1
H/A License: 14000003711
NPI: 1922277805


  • M.A. Audiology, Bowling Green State University
  • Bachelor of Science in Speech & Hearing Sciences, Elmira College


  • Fellow of American Academy of Audiology

Dawn’s message to her patients

“Every patient comes to my office with a different communicative need: the teacher who wants to hear the student in the back row; the grandma who yearns to hear the soft coos of her newborn grandchild; the businessman who is missing too much at staff meetings. Being a good listener enables me to understand my patients’ most pressing communication needs and concerns. Together, we work as a team to achieve our goals toward improved hearing.

“Current hearing aid technology is advancing in ways that astound and it makes previously unattainable goals a reality. My patients’ triumphs become my triumphs as we get back on the road to better hearing. The smiles that abound once our goals are met are my greatest reward and continue to make me feel fulfilled and proud to be an audiologist.”

Dr. Roseann M. Bello, AU.D., CCC-A, F-AAA

Doctor of Audiology

Doctor of Audiology – Licensed New York State; Hearing Aid Dispensing – Licensed New York State
Audio License: 002822-1
H/A License: 14000054731
NPI: 1013564764


  • Doctor of Audiology – The Long Island Au.D. Consortium, Hofstra University
  • Bachelor of Arts, Psychology & Communication Sciences and Disorders – St. Joseph’s College


  • Certificated Member of the American Speech-Language Hearing Association (ASHA), Certificate of Clinical Competence in Audiology
  • Fellow of the American Academy of Audiology (AAA)

In the field of audiology we have the chance to truly listen to our patients and provide them with the support and technology they need to excel and enjoy the sounds of life. I have the opportunity to truly make a difference in the life of another individual every single day. Audiology has become my passion for this very reason. It is truly a blessing to be able to provide support and assistance to the hearing impaired population so that they can fully engage in the joys of life. There is no greater feeling then an individual returning to the office after being fit with hearing instruments and listening to them describe all of the new sounds they have heard. From the sounds of birds to the voices of their grandchildren, each individual with their own unique story and experience, it is truly a privilege to be a part of their hearing journey.

Cristina Iacobelli Angst, AU.D., CCC-A

Doctor of Audiology

Audio License: 002786-1
HA License: 14000055759
NPI: 1528553906


  • Doctorate of Audiology, Salus University
  • Bachelors of Arts- Speech- Language Pathology and Audiology, St. John’s University


  • New York State License- Audiology
  • New York State Hearing Aid Dispensing License
  • Certificate of Clinical Competence in Audiology- American Board of Audiology


  • American Speech- Language Hearing Association (ASHA)
  • Long Island Speech Language Hearing Association (LISHA)

“Early on in my education, I was confident that working with a variety of ages and populations was and still is my life-long ambition. I consider my ability to relate and communicate effectively with patients and their families one of my most significant assets. I enjoy learning and will continue to be educated on testing, technology, and audiology advancements.

A goal of mine throughout my career is to make a positive impact in my patient’s lives. I want them to feel comfortable and participate within their day to day activities. I believe that the small steps we take together are leaps in hearing, communication, personality, and success. ”

Happy Patients

Patient Reviews

Read a Few of Our Google Reviews

5 out of 5 Stars based on 266 Reviews on Google.

Read what some of our patients have to say about our staff and our clinic!

Always an excellent experience at McGuire’s hearing. They are kind and knowledgeable. I have been wearing hearing aids for many years and my daughter has been wearing them her whole life so I have been to many different places but so far (4yrs) McGuire’s in Riverhead has not let me...

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Abby Koeppel, on Google

25+ years ago I selected McGuires because patients were satisfied & had no complaints. McGuires has always met my needs. I do not hesitate to recommend McGuires to patients & friends.

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Joanne Davis-Slotkin, on Google

Audiologist is wonderful. Only complaint, this office texts, calls, texts again with appointment reminders, even after first confirmation. Feels like nagging.

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Lorraine De Armitt, on Google

I had a very pleasant experience with Dr Bohr who was very professional and empathetic. She also introduced me to the newest technology re hearing aids. I am looking forward to a meeting with her next week to assess my experience with this hearing aid,

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Pablo L. Torre Jr. M.D., on Google

Mary was very capable and pleasant to work with. She did everything possible to help me with my new hearing aides but, above that she obviously very experienced and knows the medical information accruing to hearing problems.

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Ruth Bruun, on Google

What a great experience! I had been procrastinating looking into getting a hearing device for too long. Dr. Hayden dispensed my hearing tests and was incredibly professional, understanding, and knowledgeable and made me feel very comfortable. She was able to answer all my questions and concerns as well as determine...

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Ellen Robertson, on Google

I am a very hard of hearing person. Having Mary Bohr taking care of my hearing aid takes the tension away from me. Any problems are dealt with and Mary finds a solution. I am very fortunate to have Mary in my life

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Rena Rosenfeld, on Google

The audiologist in Southampton was amazing! She is professional, courteous, worked with me and my insurance to get the best hearing aide! So thankful!!

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Anastasia Karloutsos, on Google

Very professional, helpful and friendly. My experience was exceptional, I would highly recommend.

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Frank Dalene, on Google

Setting appointments is excellent, Dr. Dawn Von Bergen explains thoroughly the entire Process of hearing test, interpretation of results , the features of hearing aid devices, fitting and follow-up I am happy to recommend McGuire’s hearing center And Dr. Dawn Von Bergen to all , specially Elderly candidates!

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suresh gohel, on Google

McGuires is AMAZING! Dawn and her staff are kind and accommodating. Our appointments are always thorough and informative. She takes her time and explains everything. Would highly recommend.

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Kristen Elliott, on Google

Mcguire's Hearing Aids & Audiology Services

Attention: new, existing and loyal clients. Here is the consumer alert announcement from the NYS Department of State, View Article