Meet Our Team


Shari Flanagan - Office Coordinator

Shari is a dental assisting graduate of the Charles H. McCann Technical School in North Adams, MA and brings over 20 years of both chairside and front desk experience to ur practice.  She is very knowledgeable in the dental claims process and will help you understand as well as maximize your benefit coverage.  When she is away from the office she entertains others with her beautiful singing voice while also enjoying time with her husband, two daughter and dog Harmony.  She is and avid gardener and loves to travel as well.



Shannon Abrams – Accounts Specialist 

Shannon has worked in the office administration field for over twenty-five years and patient interactions are the part of her job that she enjoys the most.  In this way she seeks to make your experience here at our office a pleasant one.  In her free time she loves to spend time with friends and family, especially her grandchildren.  She enjoys relaxing by the water and most sports, trying to get out on the golf course at least once a week


Karen LaferriereCertified Dental Assistant

Karen, our chairside assistant, has more than 25 years of experience in clinical dentistry.  She enjoys working in the dental field because she likes being part of a team environment where she enables you to feel comfortable during your appointment.  In her spare time she enjoys spending time with her daughter, being outdoors near the ocean, cooking, home decorating and organizing, refinishing furniture, and hosting dinner parties for her family and friends.

Kathy SartoriusRegistered Dental Hygienist

Our full time hygienist Kathy has 34 years of experience in dental hygiene as she graduated with her RDH degree from Westbrook College of Portland , ME in 1986.  She became licensed to administer local anesthesia in 2014.  She really enjoys getting to know our patients and what works best for each of them as individuals to maintain their optimal oral health.  In her spare time, she enjoys traveling, spending time with family and friends as well as motorcycling and physical fitness.


118 Maplewood Avenue, The Captain Moses House, Suite B-7, Portsmouth, NH 03801

Dr. Barry F. McArdle, D.M.D. 


Phone: 603-430-1010

Hours: M - W: 8:30 - 5:00 Th: 7:30 - 4:00

Your Portsmouth dentist on the seacoast of NH.