Our Caring, Professional Somerville Team

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

Peter Okwerekwu, DDS

Dental Director

I am deeply passionate about oral health and creating valuable services to people at a personal and community level. Practicing dentistry at Great Hill Dental has given me the opportunity to combine both of these interests in an environment that encourages clinical and ethical excellence.The first step in providing quality oral care is creating an atmosphere of trust where patients can confidently express their concerns and get crucial information. There is a proven correlation between adequate preventative education and quality oral care and my goal as a clinician is to equip patients with such information, which in turn enables our dental team provide exemplary dental care. Finally, as dental technology evolves I strive to be in the forefront of dental innovation so that patients have access to improved levels of care.


  • Doctor of Dental Medicine – Boston University Henry M. Goldman School of Dental Medicine
  • Master of Public Health – University of Minnesota, Twin Cities
  • Bachelor of Dental Surgery – University of Lagos

Professional Affiliations

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

I am originally from Lagos, Nigeria and I currently live in Cambridge with my family.
In my free time, I enjoy nature photography, reading and attending car shows. I’m also a budding amateur barista so Starbucks take note.

Lawrence E. Goodman, DMD


It is always my goal to help people retain their natural teeth in health and function by restoring their smile and ability to eat and speak with comfort. I find the practice of periodontics to be extremely intellectually challenging and stimulating. Even after 20 years of practice, I continue to be fascinated by the various procedures for aesthetic gum treatment, dental implants, and regenerative therapy.

Education and Experience

I regularly attend general dental and specialty conferences at the regional and national level to learn about the best, most effective ways to improve my patients’ periodontal health. Additionally, I was a pre-clinical instructor in Restorative Dentistry at the University of Pennsylvania School of Dental Medicine and a clinical instructor in Periodontology at Tufts University School of Dental Medicine.

Awards and Honors

Awards and Honors

  • Boston Magazine, Top Dentist 2020
Outside the Office

My wife and I have been married for 20 years and we have two sons who are very active in their school sports. After work, I enjoy playing baseball, soccer, and basketball with my boys. I have been a Red Sox fan all my life, and more recently a supporter of the New England Revolution. I coach soccer and baseball, play softball, and in my leisure time, enjoy fishing, reading, and hiking.

Chao Pinhole® Surgical Technique

Dr. Goodman now performs the Chao Pinhole® Surgical Technique

This breakthrough treatment, also known as Pinhole Gum Rejuvenation™ and Lunchtime Gum Lift™, is a scalpel-free, suture-free procedure for treating gum recession. To learn more about the Pinhole® Surgical Technique, please contact our office.

Shailaja Thaker, DMD

Pediatric Dentistry

I am passionate about providing the highest quality of dental care to children in the most comfortable atmosphere possible. By doing this, I am helping my patients enjoy their dental experiences and learn great life-long oral habits. I am fully committed and dedicated to ensuring each little smile I treat gets nothing but the best and gentlest dental care available.


I take several continuing education courses throughout the year so I can keep informed about the newest and most proven research and developments in the field of pediatric dentistry. It is very important that I stay at the cutting edge of my field’s advancements so that I am able to provide each of the little smiles I treat with the utmost the dental industry has to offer.

Professional Affiliations

The professional affiliations I maintain also help me further my knowledge and skill in the field of pediatric dentistry, allowing me to offer my patients the benefits of the best possible care.

Awards and Honors

Awards and Honors

  • Boston Magazine, Top Dentist 2017
  • Boston Magazine, Top Dentist 2018
  • Boston Magazine, Top Dentist 2019
  • Boston Magazine, Top Dentist 2020
Outside the Office

I am originally from India and have called Boston my home for the last ten years. At home, my husband and I have two dogs, Moji and Leo. I enjoy yoga, running, and cooking.

Richard Michalowski, DMD

Restorative Dentistry

Working for the past 20 years as a dentist has never been boring, as each day brings new challenges. Seeing my patients satisfied and smiling at the end of their visit is always the biggest reward. I know that I can make a difference in people’s lives and that’s what motivates me every day.

Doctorate of Dental Medicine – Tufts University School of Dental Medicine
Annually, I attend at least 20 hours of continuing education courses in different aspects of dentistry and patient care, from the latest developments in implantology to the newest dental materials. Things are continuously changing in this field and staying on top of the newest innovations in the dental care industry is one of my top priorities.

Professional Affiliations
  • American Dental Association
  • Massachusetts Dental Society
  • Tufts Alumni Association
Outside the Office

I was born in Poland in a small town about 100 miles from Berlin. I now live in Sherborn, Massachusetts, a small town in the middle of the woods, with my three wonderful children and our dog, Holly. Being a single father after losing my wife to cancer four years ago, I play an active role in the lives of my children while working as a full-time dentist. This leaves very little time for anything else, but when I have the chance I enjoy listening to classical music, gardening, and going to the gym.

Matthew Hickin, DDS MS


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

Awards and Honors

  • Boston Magazine, Top Dentist 2018
  • Boston Magazine, Top Dentist 2020

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.

Mahshid Bahadoran, DDS DMSC


I completed my Doctor of Medical Science (DMSc) in Orthodontics specialty at the Harvard School of Dental Medicine. Prior to starting the Orthodontics specialty, I completed General Practice Residency at Harvard School of Dental Medicine. I also earned my Bachelor of Science (BS) in Biology and Doctor of Dental Surgery (DDS) with Distinction from the University of North Carolina at Chapel Hill in 2006 and 2010, respectively.

My four-year Orthodontics residency has prepared me to confidently treat all range of malocclusions. I’m a diplomate of the American Board of Orthodontics and was ranked as a preferred Invisalign provider. I am proficient in treatments that include interceptive, comprehensive adult and adolescents, functional appliances, correction of anterior openbite using TAD, Invisalign, Lingual braces, sleep apnea appliances, splint therapy for TMD treatment, and accelerated orthodontics.

My childhood scrapbook is filled with memories of my grandfather, who was one of the pioneer dentists in my homeland. He loved his work and raised me to appreciate dentistry and to value the patient-dentist relationship. My grandfather’s office hosted the Orphanage Institution, where needy children could come for dental care. The memories I have of my grandfather made me proud to pursue my career in dentistry. My fascination with orthodontics was increased as I was able to give my patients more stunning appearances and to bring smiles to their faces has been incredibly rewarding.

Chitwan Sachdev, DDS

General Dentist

Dr. Chitwan Sachdev is a graduate of the University of Colorado Boulder, Dental School. Dr. Sachdev brings over 10 years of dental experience, with experience in creating detailed treatment plans. Dr. Sachdev looks to educate patients on the connection between oral health and overall health, working together to improve their smile.


Bachelor of Dental Surgery – Baba Farid University of Health Sciences

Doctor of Dental Surgery – University of Colorado Dental School


American Dental Association

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.

Great Hill Dental Somerville

(617) 764-3440

Address : 20 Holland Street
Suite #400
Somerville, MA 02144-2705


Monday: 7:30am-5pm
Tuesday: 7:30am-5pm
Wednesday: 7:30am-5pm
Thursday: 7:30am-5pm
Friday: 7:30am-5pm
Saturday: Closed