Our Caring, Professional Peabody Team

Our office uses advanced technology and modern techniques to ensure the highest quality dental care with minimal discomfort.

Our Caring, Professional Peabody Team

Our office uses advanced technology and modern techniques to ensure the highest quality dental care with minimal discomfort.

Sumra S. Khan, DMD

Dental Director

My decision to join the oral healthcare field was based on my understanding of how vitally oral health is connected to overall health and well-being. I love working in dentistry because of the fact that I am not only able to contribute to healthier teeth but more importantly, to greater, healthier lives for my patients. At the end of treatment, it is absolutely exhilarating to see my patients’ triumphant smiles and confidence in their health. Not a day goes by that I am not thankful for the opportunity I have had to forge a path where my career of helping people has so intricately merged with my personal desire.

I received a Bachelor of Arts degree in Archaeology from Boston University and completed my Doctorate of Dental Medicine at the University of Pennsylvania School of Dental Medicine. Later, I completed my General Practice Residency at Brigham and Women’s Hospital, Mass General Hospital, and Harvard School of Dental Medicine. I earned my Fellowship in General Dentistry from Brigham and Women’s Hospital and the Dana Farber Cancer Institute after that.

For me, continuing my education in my field is not optional – it is mandatory. I understand how critical it is for my patients that I stay fully abreast of all the latest and most scientifically proven advancements in dentistry. This is why I constantly review scientific articles and professional journals, and I actively participate in regional and national meetings with highly experienced colleagues.

Awards and Honors

  • Boston Magazine, Top Dentist 2017
  • Boston Magazine, Top Dentist 2018
Professional / Faculty Affiliations

I am provided further opportunities to advance my knowledge, skill, and experience in dentistry by holding active membership in the following professional and faculty affiliations:

  • American Dental Association
  • Massachusetts Dental Society
  • Harvard School of Dental Medicine – Clinical Instructor
  • Brigham and Women’s Hospital – Attending Dentist
In the Community and At Home

Being active in the community is such a great way to improve one’s own life directly by helping to positively affect someone else’s. Community service is important because people have a responsibility to provide support for one another. For this reason, whether it is doing volunteer work or donating my own resources, I dedicate much of my effort to giving back to the wonderful members of my community.

I am a native of Boca Raton, Florida, but I have enjoyed calling the greater Boston area home since 2008. When I am not in the office, I enjoy hiking, mountaineering, kayaking, and traveling domestically and abroad. I also love to read and am a self-proclaimed “foodie.”

Michael A. Scialabba, DDS

General Dentistry

I am most passionate about helping those in need, especially by providing new function to those who have to rebuild their dentition with implants and comprehensive restorative care. Explaining the connection between dental health and overall health and well-being is one of the main reasons I chose dentistry as a profession. Working with so many different people helps me appreciate how important communication is when building relationships. It is important not to approach every individual the same way, but rather to build relationships customized to each individual’s needs and wants.

Education and Experience

  • Bachelor of Science in Finance – Boston College
  • Doctorate of Dental Surgery – State University of New York at Stony Brook
  • General Practice Residency – Veterans Administration, West Palm Beach, FL

Awards and Honors

  • Boston Magazine, Top Dentist 2019
  • Boston Magazine, Top Dentist 2020

Professional Affiliations

  • American Dental Association
  • Academy of General Dentistry
  • Massachusetts Dental Society

I grew up in Queensbury, New York, in the foothills of the Adirondacks, and now reside in the Boston area with my wife and our two young boys. In my free time I enjoy spending time with my family, and watching baseball, football, and all Boston College sports, as well as playing golf, following politics, and doing photography. I participate in various charitable activities associated with Boston College.

Dr. Matthew Hickin, DDS

Matthew Hickin, DDS


Dentistry is an exciting yet challenging field, but I truly enjoy every day of practice. Periodontics in particular is a fascinating field that is constantly changing and updating. New research and technology is changing the way periodontists treat patients, with increasing comfort and efficacy. And while I am passionate about saving teeth, dental implants have allowed for treatment not possible in the past and is an integral part of my practice.

  • Bachelors of Science in Chemical and Biomolecular Engineering-Johns Hopkins University
  • Doctor of Dental Surgery-Columbia University, College of Dental Medicine
  • Masters of Science in Periodontics-Columbia University, College of Dental Medicine

Awards and Honors

  • Boston Magazine, Top Dentist 2020

Professional Organizations

  • American Academy of Periodontology
  • Northeastern Society of Periodontists
  • American Dental Association

I am originally from Queensbury, NY and now live in the Back Bay neighborhood of Boston. I’m a newcomer to the city, but am excited to make this my new home. I spend most summer weekends in Lake George-boating, swimming, and spending time with family. I also enjoy running, skiing, cooking, and reading.

David Krass, DMD, MMSc



  • Tufts University School of Dental Medicine, DMD
  • Havard School of Dental Medicine – Advanced Graduate Education in Orthodontics, MMSc

Professional Associations:

  • American Dental Association (ADA)
  • American Board of Orthodontics (ABO)
  • American Association of Orthodontics (AAO)
  • Massachusetts Dental Society (MDS)

Dr. David Krass is an American Board of Orthodontics certified orthodontist. He was born and raised in Michigan where he received his Bachelor of Science at the University of Michigan. He went on to receive his Master of Science in Medical Physiology at Case Western Reserve University in Ohio. Dr. David then moved to the Northeast where he attended Tufts University School of Dental Medicine and graduated summa cum laude. He completed his education at Harvard School of Dental Medicine where he received his Master of Medical Sciences and advanced graduate training in orthodontics.

Dr. David believes that each individual’s dental needs are unique, and he enjoys guiding and educating patients throughout their treatment. He looks forward to working together with his patients for a successful outcome.

In his free time, Dr. David can be found exploring the natural beauty of New England, wading for blue crabs, cooking and baking, watching football and basketball, and gardening with his fiancée.

Mahdieh Beheshti, DMD

Pediatric Dentist

Dr. Mahdieh Beheshti is a board-certified pediatric dentist and a Diplomat of the American Board of Pediatric Dentistry. She completed her dental school and graduated from a pediatric dentistry residency in Iran. After relocating to the United States, she continued her education at the Advanced Standing Program at Boston University, Henry M. Goldman School of Dental Medicine, where upon graduation was inducted into the Omicron Kappa Upsilon (OKU) National Dental Honor Society for her outstanding and exemplary academic standing. She repeated her training in pediatric dentistry at NYC Health + Hospitals / Jacobi Medical Center, a level I trauma center and the only pediatric trauma center in the Bronx and southern Westchester, New York, and in affiliation with the Albert Einstein College of Medicine.

She is a member of the American Academy of Pediatric Dentistry, the American Board of Pediatric Dentistry, and the College of Diplomates. She strives to provide optimal care for her patients and has a profound passion for helping children enjoy a positive, successful experience within the dental environment. She loves the art of dentistry with professional interests in esthetic dentistry and creating a beautiful smile, as well as constantly striving to provide the best treatment for her patients.

During her free time, Dr. Beheshti loves baking and professional cake decorating, reading, yoga, and spending time with her family.


  • Boston University Henry M. Goldman School of Dental Medicine
  • Islamic Azad University School of Dentistry

Dr. Zhala Isayeva, DMD

General Dentistry

Dr. Zhala Isayeva is a graduate of the Boston University Henry H. Goldman School of Dental Medicine, graduating with honors. She provides general and cosmetic dental services. Dr. Isayeva has volunteered as a teaching assistant, mentoring 1st-year dental students, and is fluent in English, Russian, Turkish, and Azerbaijani.

New Patients are Always Welcome at our Practice!

Please feel free to call us or email us if you have any questions or wish to book an appointment.

(978) 717-5819


39 Cross Street
Suite 307
Peabody, MA 01960

Mon: 8:00am – 7pm
Tues: 8:00am – 7pm
Wed: 7:30am – 6pm
Thurs: 7:30am – 6pm
Fri: 8:00am – 3pm EVERY OTHER
Sat: 8:00am – 2pm EVERY OTHER

Great Hill Dental Locations


1610 Tremont St.,
Boston MA, 02120


20 Holland St., Suite #400,
Somerville, MA, 02144


39 Cross St., Suite 307,
Peabody, MA, 01960


100 Grossman Dr., Suite 210,
Braintree, MA, 02184


122 Chelmsford St.,
Chelmsford, MA, 01824


188 Needham St.,
Newton, MA, 02464