About the Office of Denis A. Quagliariello, D.M.D.

At the dental office of Denis A. Quagliariello, D.M.D., our friendly, talented staff is dedicated to providing every patient with exceptional cosmetic and comprehensive dental services all under one roof. Our state-of-the-art technology and services are designed to help you feel at home, and our dental staff is trained to respond to the special concerns and needs of our patients. Whether you’re missing a tooth, need dentures, a dental filling, or just a regular cleaning; we have the tools and knowledge necessary to help you.

Achieve a Healthy Smile from a Team that Cares

We work hard to provide a warm and welcoming environment for every patient. We take the time to discuss one-on-one with you about your dental options, and what would be best for your overall oral health. Your complete satisfaction with our work is our guarantee.

Meet Our Dentists


Dr. Quagliariello, D.M.D.

In 1995, he earned his Doctorate of Medical Dentistry degree from Temple University and received awards from the Endodontic, Stomatognathic, and Oral Surgery honor societies for showing dedication and excellence in those fields of dentistry. While at Temple University, Dr. Quagliariello became affectionately known as “Dr. Q” from patients, colleagues, faculty and staff.

Upon graduation Dr. Q spent 12 years in a group practice in the Pilgrim Gardens section of Drexel Hill. Finally in 2007, Dr. Quagliariello transitioned into his own solo practice by opening a brand new state-of-the-art facility in Westtown, Chester County. Appearing in the Main Line Times as a Top Doc, as well as having a featured article in the Doctor of Dentistry magazine on redefining family-style dentistry are just some of Dr. Q‘s accomplishments. In 2008 and 2012 he was awarded one of “America’s Top Dentists” from the Consumer’s Research Council of America based in Washington, D.C.

Dr. Quagliaiello, Dentist in West Chester, PA

Outside of dentistry, Dr. Quagliariello enjoys spending time with his family. He likes to travel and is an avid sports fan. He is active in the community. He loves movies and music and has a special devotion to cars and racing.

“I am blessed to be in a profession to meet people everyday and from those meetings build enduring relationships. There is nothing more rewarding for me than to help people smile and feel good about themselves. Treating patients and having their trust is truly a privilege.” -Denis Quagliariello, D.M.D.

Dr. Quagliaiello, Dentist in West Chester, PA

Dr. Sarah Cho, D.M.D.

Dr. Sarah Cho received her Bachelor’s degree in Chemistry from Drexel University where she graduated at the top of her class. From there, she earned her Doctorate of Dental Medicine degree from Temple University where she graduated with honors.

After graduation, Dr. Cho spent the first few years of her professional career in a group practice in Montgomery County, serving the Chalfont and Harleysville areas. In 2016, she moved to Chester County to join Dr. Q’s dental office and has been here ever since.

Dr. Cho believes that dentistry is both a science and an art, working in harmony to create a healthy and beautiful smile. She is an advocate of minimally invasive and evidence-based dentistry and strives to deliver quality care while ensuring her patients are comfortable. 

In her spare time, Dr. Cho loves spending time with her husband and two young sons, who keep her busy.

Denis A. Quagliariello, D.M.D.
Marketplace at Westtown
1502 West Chester Pike
West Chester, PA 19382

Payments Accepted

Office Hours

Monday:           10:00 am - 6:00 pm
Tuesday:           8:00 am - 5:00 pm
Wednesday:     8:00 am - 5:00 pm
Thursday:         10:00 am - 6:00 pm
Friday:               8:00 am - Noon
Saturday:          Closed
Sunday:             Closed