Meet Our Team
Dr. DAVID J. MONTGOMERY
D.D.S.
“Making you smile is almost as important to me as improving your smile! It is very gratifying when we can turn our patients into friends who enjoy coming in for a visit.”
Dr. Dave grew up in the Northern Virginia suburbs of Washington, D.C. He graduated Summa Cum Laude from Old Dominion University in 1990 and Magna Cum Laude from The Medical College of Virginia in 1994. Among other numerous honors and awards, he received the awards for Outstanding student in both periodontics and general dentistry. In his professional career, he is consistently selected by his peers as one of Main Line Today Magazine’s ‘Top Dentists‘ for the past 10 years including the most recent 2025 issue. He is currently pursuing a Fellowship in the Academy of General Dentistry following the completion of over 500 hours of continuing dental education credits. Dr. Dave is the reviewing school dentist for the West Chester Area School District. He is also a volunteer dentist at our local clinic; Community Volunteers in Medicine (CVIM) where he and other dentists and physicians treat thousands of patients in need on an annual basis. Dr. Dave and his wife, Dr. Jane Grosser, reside in West Chester where they hopefully have finished raising their three adult children; Shannon, Matthew and Evan as well as their Portuguese Water Dog, Millie. Some of Dr. Dave’s interests include snowboarding, golf, water sports and ice hockey. He has been a life-long fan of the 2018 Stanley Cup Champion Washington Capitals.
RYAN C. DUNN
D.M.D.
“I enjoy the creative and artistic side of dentistry. When you love your smile, you are more confident and it shows.”
Dr. Dunn graduated from St. Lawrence University in Upstate New York in 1999. He went back to St. Lawrence for his Masters in Education before following in his sister’s footsteps by pursuing a career in dentistry at Temple University. Dr. Dunn had practiced in the Philadelphia area for over 6 years before joining
Chester County Family Dentistry in 2010. He and his 3 boys reside in Downingtown where the boys spend most of their time on the baseball and football fields. Dr. Dunn, Finnigan, Hudson, and Brodie enjoy the outdoors and spending time in the Adirondack Mountains and on the St. Lawrence River.
ANN COGILL
Appointment Coordinator
“Chester County Family Dentistry is my ‘home away from home’. I love working with a team who is so very dedicated to the well-being and health of our patients. I’ve learned from Dr. Dave and Dr. Ryan (and Dr. Don before them), and all the hygienists, how important maintaining good dental hygiene helps our entire body. We have the greatest patients and my job is keeping in touch with them and helping them schedule their checkups. Working here for a little over 30 years has afforded me the pleasure of seeing our patients grow from children to adults to parents, and for some, grandparents! Having 4 children and 11 grandchildren myself, I have grown with them and appreciate this circle of life and feel truly blessed!”
Ann is also in charge of our continuing care call system. You will get a call or email from her if it is time for you to schedule your next cleaning and exam visit.
WENDY BIRONT
RDH – Dental Hygienist
As one of our five exceptional dental hygienists, I am proud to say our hygiene department has the optimal technology and research combined with caring personal service creating what we hope is your best dental experience ever.
"I’m a graduate of Thomas Jefferson University (B.S. in Dental Hygiene) and have completed Masters courses in Public Health at WCU. Of the plethora of continuing education I’ve attended, my interests lean toward diabetes management, disease prevention, sterilization, and practice management.
For my 30th year with the office, Wow! Dr. Dave and Dr. Ryan threw an incredible party!!
I love being a dental hygienist with the team at CCFD. I can honestly say I would choose my dental hygiene profession again if given the choice today. Patient care in our office means so much more than cleaning teeth, we treat our patients like family and friends.
When I’m not in the office I'm working my side hustle Dental Fillins; a staffing agency, I co-own with Danielle RDH. The best part of my day is spending time with husband Mike as we enjoy Bradley our WC Rustin Sr. looking ahead to his 2026 graduation supporting his Knights lacrosse team. Michael our McDaniel College Jr. finance major is playing lacrosse for the Green Terror. I do continue to remind the boys to floss and wear their retainers!
When not cheering from the sidelines I’m walking the dogs, cooking low carb, and avidly watching all Philly sports teams.”
DANIELLE SYDENSTRICKER
RDH – Dental Hygienist
“As a 2004 graduate of the University of Pittsburgh School of Dental Medicine’s dental hygiene program, I am dedicated to promoting oral health and wellness. My expertise lies in biological hygiene and guided biofilm therapy. I reside in southern Chester County with my husband and our two children. I hold a license as a public dental health practitioner and currently serve as the school hygienist at Avongrove School District. Additionally, I hold a Level 2 CrossFit coaching certification.”
ERIN P.
RDH – Dental Hygienist
“Dental Hygiene is a stimulating career with new advancements and technology. Each patient is diverse and unique requiring different treatment needs and education that varies from appointment to appointment. That is what makes each day new and exciting.”
SHELLEY BROWN
Financial-Treatment Coordinator
Shelley has been in the dental field for over 25 years and has proudly been part of the Chester County Family Dentistry team for the past 12 years. She serves as both the Dental practice Financial Coordinator and Treatment Plan Coordinator. Shelley is the go-to resource for financial inquiries and treatment plan guidance, ensuring every patient feels informed, supported, and confident in their care.
Outside the office, Shelley has loved watching her three sons grow into young men and cherishes being part of all their milestones. In her spare time, she enjoys cooking, traveling, spending quality time with family and friends, and—of course—enjoying a great shopping day.
CORINNE MAGUIRE
Dental Assistant
“I moved to Chester County over 20 years ago and have been amazed at the rapid growth. I hope all new residents will come to trust our dental practice for all their family’s needs. We all are committed to staying informed on the latest dental education and technology.”
BECKY SHOTWELL
CDA, EFDA – Certified Dental Assistant, Expanded Function Dental Assistant
“I’ve been a part of this dental family for over 40 years! I started as a patient when I was a kid and I’ve been working here for almost 25 years now! Time really does fly when you LOVE what you do. Following in my Aunt Jackie's footsteps, I became one of the office's Expanded Function Dental Assistants (EFDA). I can only hope that, like her, I will be here long enough to form long-lasting relationships with our patients as she did.
I love working side-by-side with the doctors; helping to create your beautiful smiles.
Behind the scenes, I also manage our Social Media pages and do my best to keep up with the times!
I look forward to meeting you and welcoming you to our Dental Family.”
TEONNA HARRIS
Dental Assistant
“It makes me so happy to see patients walk out of our office with a smile on their face!”
I’ve been working for Chester County Family Dentistry for almost three years now and I love it here! It’s welcoming atmosphere makes me feel blessed that I was given a chance to be a part of such a great team. I graduated from Contemporary Health Career Institute in 2018, where Becky (our EFDA), and Sunny (one of our hygienists) were my teachers. I enjoy helping others, assisting chair side, and getting to know each and everyone!
SUNNY RAHMAN
RDH - Dental Hygienist
“This year, I will be celebrating my 5th anniversary with our wonderful practice. I am a newlywed as of Memorial Day Weekend 2025 to my beautiful wife, Mona. I graduated from Penn College with my Bachelor of Dental Hygiene in 2012. When I’m not being a dental geek, I love traveling around the globe, exploring, tasting food, and experiencing different cultures. I always find a way to make everything adventurous. I try to live by the saying "life is better when you are smiling," and I strive to give my patients the same motivation.”
Kit Foster
Appointment Coordinator
"I have been at CCFD for 4 years now as an Appointment Coordinator after having worked as an Administrative Assistant in academia for 30+ years. As the "face" of the practice, I love the balance between the administrative duties and the patient interaction. Along with my colleagues, we play an integral role to create a positive experience for patients and staff alike. Our goal is to ensure that patients have the utmost positive experience while at our practice."
Shannon Montgomery
RDH - Dental Hygienist
"I am very excited to be starting my career with Chester County Family Dentistry, and of course, my Dad (Dr. Dave)!"
Shannon grew up in West Chester with her parents, Dr. Dave and Dr. Jane Grosser, as well as her younger brothers, Matt and Evan. She is a graduate of The University of Delaware with a BS in Health Science and a graduate of Harcum College with a degree in dental hygiene. While at Harcum, she was inducted into the Sigma Phi Alpha Dental Hygiene Honor Society for ranking in the top of her graduating class and was the recipient of the Harcum College President's Award. Shannon has returned to Harcum College as a part-time dental hygiene clinical faculty member. She instructs students as they complete their rotation through the dental clinic at Community Volunteers in Medicine (CVIM) in West Chester. She is also on the Board of Directors for the Pennsylvania Hygiene Political Action Committee (Penn Hy-PAC). Shannon looks forward to meeting all of the CCFD patients and continuing her passion in the dental field!
Christie Desher
Office Manager
Christie began her career in dentistry at just 20 years old and has loved it ever since. With a natural talent for organization and a heart for helping others, she’s passionate about making each patient feel comfortable, cared for, and understood. Her favorite part of the job is building lasting relationships with patients and watching their confidence grow with every visit.
Christie has been with her spouse for 22 wonderful years and is a proud mom to her 17-year-old daughter. Outside of the office, she enjoys DIY home projects, embroidery, shopping for the best deals, and finding creative ways to bring joy to others.
You can find Christie at our front desk with a smiling face, ready to help answer any questions you may have and ensure your visit goes smoothly from start to finish.
Nora
EFDA – Expanded Function Dental Assistant
Hi! I’m Nora. I started my dental career while I was in high school. I am a dental assistant who loves helping patients feel comfortable and confident about their smiles. I’m passionate about creating a positive experience in the dental chair and enjoy working as part of a team that cares about great results and patient care.
In my free time I enjoy going to concerts, and walking with my dog, Millie!
Mia
Dental Assistant
I’m a new dental assistant who joined the practice in October of 2025. I enjoy helping patients feel more at ease during their appointments. I’ve only been in the field for a short time, but I’m committed to learning quickly and giving every patient a relaxing & supportive experience. Outside of work, I enjoy style and putting outfits together, going out with friends, and traveling whenever I can. I’m excited to be a part of this family and to keep growing as I learn more each day.