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Introducing Our Dental Team

Welcoming West Sayville’s Smiles

Our practice is all about your peace of mind: Peace of mind about the health, comfort and appearance of your smile; and peace of mind about the consistency and excellence of your dental care.

We want your experience with us to be unprecedented – every dental visit; every procedure.

Our entire team is dedicated to your needs, making sure appointments are convenient, relaxing and absolutely comfortable. We ensure that plenty of time is spent listening to you and discussing your options. And we do everything we can to make your dentistry affordable by offering interest-free payment plans with CareCredit.

When you arrive at our office, you are always warmly greeted and offered a refreshment from our coffee bar. All of our treatment rooms are equipped with noise cancelling headphones, iPods, Pandora radio, blankets and cozy pillows. For longer appointments or to keep kids occupied, we offer movies or satellite TV.

Best of all, our team is highly trained and experienced, and each team member has a unique love of learning. In fact, Dr. Sigismondi averages over 40 hours of continuing education a year!

We’d love to get to know you – and your smile – better, and help you find your ideal health!

Meet Dr. Richard Sigismondi

Dr. Richard SigismondiA Long Island native, Dr. Richard Sigismondi completed his undergraduate work at Stony Brook University where he obtained a Bachelor of Science degree in Biology and went on to graduate from Washington University School of Dental Medicine in St. Louis Missouri in 1979.

Dr. Sigismondi’s interest in dentistry started early – his first job at the age of fifteen was working in his father’s dental laboratory. His interest in occlusion and its effect on teeth, muscles and joints began then. After graduation from dental school, Dr. Sigismondi continued his studies in occlusion with Dr. Pete Dawson at the Dawson Academy where he completed the academy’s curriculum and achieved the status of Dawson Academy Scholar. This body of knowledge, combined with his studies with Dr. Mark Piper at the Piper Education and Research Center, has made for an exquisitely detailed understanding of the relationship between teeth and the TMJ, allowing Dr. Sigismondi to treat even the most complex cases with simplicity and precision.

Dr. Sigismondi’s implant training began in 1986, just one year after the ADA granted approval of dental implants in this country. His training has been with manufacturers of dental implants including Nobel Biocare’s “Teeth in an Hour.” His training in CEREC began in 2009. Since it is one of the most exciting areas of restorative dentistry, he continues training to this day. His fervent passion for continuing education is very broad, and he takes, on average, 50 hours of continuing education per year.

Dr. Sigismondi has been a member of the American Dental Association, the Dental Society of the State of NY and the Suffolk County Dental Society. He is affiliated with the Long Island Dental Forum, the Integrated Study Group, the Bay Area Study Group and the CEREC Study Club which consume much of his time out of the office.

He is an avid sailor and bicyclist. The true loves of Dr. Sigismondi’s life are his wife, Claire and daughter, Rachel. Says Dr. Sigismondi, “Our bond of a close family transcends everything else.” Together they enjoy cooking, music, gardening and travel.

Meet Dr. John W. Vasko, Jr., DMD

Dr. John Vasko

Dr. John W. Vasko, Jr. is a Long Island native who grew up on the North Shore. He completed his undergraduate studies at Stonehill College in Easton, Masschusetts, where he obtained a Bachelor of Science degree and went on to graduate from Boston University School of Dental Medicine with a Doctor of Medicine in Dentistry degree.

Dr. Vasko completed his residency at Stony Brook University Hospital, serving as Chief Resident, with a heavy discipline in both Implant and Digital Dentistry.

Dr. Vasko is a member of the Dental Society of the State of New York, the Suffolk County Dental Society, the American Dental Association, and The Dawson Academy.

His hobbies include playing golf, traveling, cooking and spending time with his wife, Marissa.

Meet Our Dedicated Dental Team


Dorothy, Patient Care CoordinatorDorothy, Patient Care Coordinator
Dorothy loves the friendly, family atmosphere at the office of Dr. Sigismondi and she does her best to add to the warmth of your experience. A graduate of Adelphi University, she has been with the practice her entire dental career, spanning nine years. Dorothy can help you with treatment planning and choosing a payment option to meet your needs. She is especially proud of the high quality dental workmanship and the long-standing relationships the practice has built with patients. Married for 16 years, Dorothy has two cats and loves to read. She enjoys boating and is an avid sailor.


Karen, Registered Dental HygienistKaren, Registered Dental Hygienist
Karen studied dental hygiene at Hudson Valley Community College and has been in dentistry for over 30 years. Her duties include x-rays, cleanings, patient education and helping patients find dazzling smiles with Zoom! Whitening. She also has advanced training in local anesthesia and Nitrous Oxide from Stony Brook University to offer patients the best in painless dentistry. She loves working with Dr. Sigismondi and the rest of the team, helping patients achieve a healthy smile through personalized and individual care. Karen is married and has two sons, and enjoys boating and gardening in her free time.

©2017 Richard M. Sigismondi, DMD, P.C. Achieving the balance of health and beauty. | 8 Munson Lane, West Sayville, NY 11796 New Patients: 866-664-1585 | Current Patients: 631-563-1583 Top