peabody team

Boston Team

David P. Pawlowski, DDS

General Dentistry
General Dentistry

Biography & Education

Improving the health of those around me is very rewarding. For nearly 30 years, I have had the opportunity to meet so many people from my community and exert a direct, positive influence in their life. The education we provide to our patients gives them the knowledge and motivation to take control of their dental health.
I am originally from Lynnfield and have lived in North Reading for the past 20 years. My wife Jeri is a dental hygienist, and we have three sons – David, Will, and Dan. My leisure time is usually spent sailing, playing musical instruments, exercising, reading, and traveling. I am also active in my church and with community sports

Joseph W. Purman, III, DDS

General Dentistry
General Dentistry

Biography & Education

My dental career began 30 years ago, and since then, I have had the opportunity to create relationships with so many wonderful people. Each patient I meet is a unique individual and it is always my goal to treat clients with the same consideration that I would expect for my own family.

Continuing my education is a vital aspect of staying on the forefront of dental treatments and technology. I am always interested in finding new, more efficient, and more comfortable ways to give my patients the dental health they deserve.

I am a native of Milwaukee, Wisconsin, and have lived in Wayland for the past 20 years with my wife and our son and daughter. When I have free time I enjoy water and snow skiing, traveling, and reading. I am also active in high school and college rowing programs.

Catherine J. Moshirfar, DMD


Biography & Education

I am passionate about educating my patients about the health of their mouth. I chose to specialize in periodontology because it was the perfect mix of microbiology, education, and artistry. I really enjoy the day-to-day interactions with my patients. I try to maintain a comfortable yet upbeat environment where the focus is always on quality patient care.
In my time outside of our practice, I enjoy traveling and kayaking, and I am learning how to golf.

Yong Hur, DMD


Biography & Education

Dr. Hur is currently assistant professor of Periodontology at Tufts University School of Dental Medicine. He is a Diplomate of the American Board of Periodontology and is a recipient of the research fellowship award sponsored by American Academy of Periodontology.

Dr. Hur is particularly active in the clinical research of guided bone regeneration and participates in the GHDP. He serves as a principal investigator (PI) / co-investigator (Co-I) for more than 10 projects related with periodontology.

Dr. Hur is also a published clinician:

Hur, Y., Bui, M. N., Griffin, T. J., & Ogata, Y. (2015). Modified Periosteal Releasing Incision for Flap Advancement: A Practical Technique for Tensionless Closure. Clinical Advances in Periodontics, 5(4), 229–234. doi:10.1902/cap.2014.140009

Hur, Y., Tsukiyama, T., Yoon, T.-H., & Griffin, T. J. (2010). Double Flap Incision Design for Guided Bone Regeneration: A Novel Technique and Clinical Considerations. Journal of periodontology, 81(6), 945–952. doi:10.1902/jop.2010.090685

Dr. Hur is a member, and peer-reviewer for the two main Journal of American Academy of periodontology: Journal of Periodontology and Clinical Advances in Periodontics . He is a member of the International Association of Dental Research (IADR).
Dr. Hur enjoys traveling with his lovely wife, Yumi who is also a periodontist.

Matthew Hickin


Biography & Education

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
  • Professional Affiliations:
    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.

Omar Salem, DMD


Biography & Education

I have been practicing orthodontics since 1999, but have a lifetime of learning in my profession. My father is a retired orthodontist, and I loved joining him in his office to help organize patient study models and prepare supplies. I still meet people who were patients of his, and were influenced by his gentle nature and beautiful results. I strive every day to be the best orthodontist I can be for my patients, and to provide a warm and welcoming environment where they feel comfortable.

Although my formal education is complete, I am always learning something new in the orthodontic field. My continuing education courses and seminars keep me up to date with the latest techniques and technology, which enables me to offer my patients the most advanced and dependable practices. Additionally, I have been involved in the education of future orthodontists, serving on the faculty at the Department of Orthodontics at Buffalo University until 2002, then at the Tufts University School of Dental Medicine, where I served as director of the Pre-doctoral Orthodontic Program until 2005.

I was born and raised in Damascus, Syria, and moved to the United States in 1996. I have been living in Canton since 2001 and love it! My wife Zeina and I have two boys who attend Canton public schools. After work, I enjoy hiking, soccer, landscaping, traveling with my family, watching the Red Sox and the Patriots, and spending time with my family.

Maryanne Knasas Irwin, DMD


Biography & Education

By using state of the art technology, root canal therapy can often preserve a damaged tooth that would otherwise require extraction. I enjoy educating patients to have realistic expectations of what root canal therapy involves, while providing treatment that is skilled, compassionate, and pain free in a comfortable and relaxed environment.
  • Bachelor of Science in Biology – Boston College
  • Doctorate of Dental Medicine – Tufts University School of
  • Dental Medicine
  • General Practice Residency – Veterans Administration, West Palm Beach, FL
  • Specialty certificate in Endodontics – Tufts University School of Dental Medicine
American Dental Association
Massachusetts Dental Society
American Association of Endodontists
Board Certified Diplomate – American Board of Endodontics
Outside the Office – I enjoy reading, running, and spending time with my husband and our two daughters.

Ryan S. Lee, DDS, MPH, MHA

Dentist - Dental Oncologist
Dentist - Dental Oncologist

Biography & Education

Dr. Ryan is a dental oncologist and dental sleep medicine provider who is a full-time attending at New York University College of Dentistry. He focuses his expertise on the dental management of patients before, during, and after cancer experience (e.g., chemotherapy, radiation treatment, transplant, surgery), as well as associated complications (e.g., sleep apnea, lymphedema, trismus, osteonecrosis, radiation caries, mucositis, oral infections and snoring).Dr. Lee has joined the Great Hill Dental team in Boston, MA to provide his specialized dental oncology treatment and care.

  • 9/2012 – 6/2013 – Postdoctoral Research Fellowship, Dental Oncology Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center
    New York, NY, USA
  • 7/2011 – 6/2012 – Postgraduate Certificate, Fellowship in Dental Oncology Memorial Sloan-Kettering Cancer Center, Department of Surgery, New York, NY, USA
  • 7/2010 – 6/2011 – Certificate, General Practice Residency (Hospital Dentistry) Mount Sinai Sch. of Medicine, Jersey City Med. Ctr., Dept. of Dentistry Jersey City, NJ, USA
  • 8/2006 – 6/2010 – Doctorate of Dental Surgery (D.D.S.), w/Honors, New York University, College of Dentistry, New York, NY, USA
  • 9/1999 – 8/2003 – Bachelor of Arts (B.A.), Economics, Northwestern University, College of Arts and Science, Evanston, IL, USA
  • 7/1995 – 6/1999 – High School Diploma, Academy for the Advancement of Science and Technology, Hackensack, NJ, USA

  • 12/2012 – current Clinical Assistant Professor, Dept. of Oral and Maxillofacial Pathology, Radiology, and Medicine
    New York University, College of Dentistry, New York, NY, USA
  • 10/2012 – 7/2013 Research Fellow, Sloan-Kettering Institute (SKI) Department of Surgery, Dental Service Memorial Sloan-Kettering Cancer Center, New York, NY, USA


  • 2014 – current International College of Oral Implantologists (ICOI) Fellowship-Eligible (FICOI), 2015
  • 2013 – current American Academy of Dental Sleep Medicine (AADSM) Fellowship-Eligible (FAADSM), 2015
  • 2013 – current Special Care Dentistry Association (SCDA)
    2012 – current American Academy of Oral Medicine (AAOM)
  • Fellowship-Eligible (FAAOM), 2015
  • Member, Oral Cancer Taskforce, 2012-current
  • 2010 – current American Dental Association (ADA)Participant, ADA Evidence-Based Dentistry Conf., Chicago, 7/2011
  • 2008 – current American Dental Education Association (ADEA)
  • National Delegate (Hospital-Based), 2012-2013
  • National Liaison, AADSAS Taskforce, 2008-2010
  • 2009 – current Academy of General Dentistry (AGD)

Richa Bhatt, DDS


Biography & Education

My passion and motivation to be an excellent clinician comes from having grown up surrounded by passionate and committed doctors, for whom providing utmost care at any hour of day was their sole purpose as doctors. I truly believe that we not only treat our patients’ oral health, but their overall well being, confidence and state of mind. I feel very proud and satisfied when a fearful, nervous patient leaves my operatory smiling and not scared to come back. The Foundation to excellent patient care can be achieved through delivering highest quality dental treatment as well as by helping them understand the mind body relation to maintain it. At Great Hill we have an excellent team of Dental Health providers that will help you understand every aspect of oral health and make this processes of ‘going to the dentist’ much more conformable.
• Doctor of Dental Medicine- Boston university Henry M Goldman School of Dental Medicine.
• Bachelors of Dental Surgery – Maurus College of Dentistry , Gujarat , India
American Dental Association
Massachusetts Dental Society
American Association of Orthodontists

I am firm believer that you cannot deliver health and wellness to patients if you yourself do not feel that way. So I spend my free time doing Yoga/meditation, being outdoors, and reading books.

Aditi Bhatt, DMD

General Dentistry
General Dentistry

Biography & Education

Dr. Aditi strives for excellence in all she does, and you can rest assured her attention to detail does not waiver while you are in her care. Dr. Aditi is skilled at guiding anxious or apprehensive patients through their treatments and helping patients feel confident that their goal of achieving a healthy smile to last a lifetime can be realized with comfort and affordability. Dr. Aditi is committed to staying ahead of changes in dentistry and advancements in dental treatment. She is committed to providing her patients with the latest and best that dentistry has to offer. She does so by constantly challenging herself, attending hands-on courses, CE courses and various Study Clubs. Dr. Aditi concentrates on restorative dentistry, her special interest is cosmetic dentistry, including smile makeovers, and is a certified Invisalign provider. She is committed to developing great relationships with her patients, ensuring patient comfort, and educating patients so they understand their oral health conditions and treatment options.
    • Professional Affiliations
    • • ADA- American Dental Association
    • • MDS- Massachusetts Dental Society
    • • BDS- Boston District Society
She enjoys hiking, swimming, cooking, and spending quality time with her family.

Kali Stewart, DMD

Pediatric Dentist
Pediatric Dentist

Biography & Education

I have wanted to be a pediatric dentist since I was 10 years old growing up in Tampa, Florida and I am thrilled to have accomplished that goal! After completing dental school and residency at Boston University I opted to stay in the Boston area to enjoy all the culture it has to offer. I come to work every day ready to bond with my young patients, quell their fears, and provide each one with a positive dental experience! I offer nitrous oxide (laughing gas) sedation during restorative treatment to help achieve those goals. Giving back is very important to me in my career, so I take part in a mission trip once a year to provide dental care to patients in underserved countries—with the added bonus of gaining both cultural and professional experiences. I have previously visited Honduras, Guatemala, Mexico and Nicaragua and look forward to many more such adventures!
-Boston University, Boston, MA – Certificate in Advanced Graduate Studies in Pediatric Dentistry
-Lincoln Medical and Mental Health Center, Bronx, NY – General Practice Residency
-Boston University, Boston, MA – Doctor of Dental Medicine
-University of Florida, Gainesville, FL – Bachelor of Arts in Biology
American Academy of Pediatric Dentistry
I grew up in Tampa, Florida, but have lived in Boston for the past 8 years—with a one year stopover in NYC. I love trying new restaurants in the Boston area and spending summer evenings on the Charles River Esplanade. I get down to visit family and enjoy the beaches of Florida a couple times a year, and love travelling to new and exotic places. I look forward to skiing in the winter and showing my Floridian friends that I can handle the snow!