Meet Dr. Mattie Hewlett, DDS: Board Certified Pediatric Dentist
Questions About Dr. Hewlett
Is Dr. Mattie Hewlett board certified?
Yes. Dr. Hewlett became a Diplomate of the American Board of Pediatric Dentistry in 2025. The ABPD directory lists her under her former name, Matilda Sullivan, at the Cobblestone Kids Philadelphia office on South Street.
What training does Dr. Mattie Hewlett have?
Dr. Hewlett earned degrees in biology and Italian at the University of Virginia, her Doctor of Dental Surgery at Virginia Commonwealth University School of Dentistry, and completed pediatric dental training at Cincinnati Children's Hospital Medical Center.
What has Dr. Hewlett published?
Dr. Hewlett authored a Journal of Dentistry for Children study on how dental operatory color affects anxiety in young patients, and a commentary in Anesthesia Progress on fasting implications of GLP-1 agonist use in pediatric procedural sedation.
Has Dr. Hewlett received any awards?
Yes. In 2022 she received the American Academy of Pediatric Dentistry Certificate of Merit and the American Association of Public Health Dentistry Award at VCU School of Dentistry.
How do I book an appointment with Dr. Hewlett?
Book online or call Cobblestone Kids at (267) 909-9551 in Philadelphia, (856) 288-1929 in Cherry Hill, or (610) 358-3900 in Glen Mills, and let the front desk know you would like to see Dr. Mattie.
About Dr. Mattie Hewlett, DDS
Matilda Hewlett, DDS grew up in Virginia and is excited to bring her enthusiasm for children’s oral health to Cobblestone Kids.
Education
- University of Virginia – Bachelors of Biology and Italian
- Virginia Commonwealth University School of Dentistry – Doctor of Dental Surgery
- Cincinnati Children’s Hospital Medical Center – Pediatric Dental Training
Memberships & Affiliations
- American Board of Pediatric Dentistry - Diplomate, Member
- American Academy of Pediatric Dentistry - Member
- Pennsylvania Dental Association - Member
Awards & Publications
- 2022 American Academy of Pediatric Dentistry Certificate of Merit, VCU School of Dentistry
- 2022 American Association of Public Health Dentistry Award, VCU School of Dentistry
- Author of publication in the Journal of Dentistry for Children entitled "The Impact of Dental Operatory Color on Anxiety in Committed Youth."
- Author of commentary in Anesthesia Progress entitled "Fasting Implications of GLP-1 Agonist Use in Pediatric Procedural Sedation."
Outside of the Office
When Dr Mattie isn't trying new recipes at home, she loves to explore the Philly restaurant and music scene with friends and family. Be sure to say hello if you see her on a walk in the neighborhood with her miniature dachshund, Jerome!