Meet the team

 Administrative Assistant, Joyce


As our practice’s Administrative Assistant, Joyce has been a integral part of Brandywine Periodontics since its beginning. On any given day, you will be lucky to be greeted by her warm smile and positive and sincere attitude. With over twenty years of experience, Joyce is always available to answer your questions and make you feel comfortable while spending your valuable time in our office. When she’s not in the office, she enjoys spending time with her family, especially her grandchildren. 

 Dental Assistant, Tiffani


Tiffani has been with Brandywine Periodontics for over ten years. As Dr. Sierakowski’s assistant, she is responsible for helping him with all dental and surgical procedures. Her warm and polite demeanor make her a natural when it comes to ensuring you feel very comfortable while undergoing periodontal therapy. She loves working in the dental field because of the interaction she has with patients and the ability to help them achieve optimal dental health.

 Periodontal Hygienist, Darlene


We are extremely proud to have Darlene as a Periodontal Hygienist. She has over twenty years of experience providing the best in periodontal scaling, oral hygiene instructions and nutritional counseling for optimal oral health. Darlene works closely with Dr. Sierakowski to tailor your periodontal and implant maintenance to fit your unique needs.



Tiya provides Dr. Sierakowski with chairside assistance, aiding patients with treatment, and being a calming factor for apprehensive patients. With over twenty years of experience in both periodontal and oral surgery practices, she is an invaluable asset to our team. Her bubbly personality and warm nature will make sure you leave our office with a smile!