The office of Marc N. Sperber, DDS and Joseph Portnoy, DDS is open Monday through Thursday from 9:00 AM until 7:00 PM, Friday from 9:00 AM until 5:00 PM, and Saturday from 9:00 AM until 1:30 PM. We will schedule your appointment as promptly as possible. If you have pain or an emergency situation, every attempt will be made to see you that day.

We try our best to stay on schedule to minimize your waiting. Due to the fact that Drs. Sperber and Portnoy provide many types of dental services, various circumstances may lengthen the time allocated for a procedure. Emergency cases can also arise and cause delays. We appreciate your understanding and patience.

As a courtesy to our patients, we attempt to call all patients a day or two before the appointment as a reminder. Please be aware that it is still your responsibility to keep your appointment on a timely basis. This appointment time has been scheduled just for you, please arrive promptly. Also, please allow a few extra minutes to complete the necessary paperwork, if you have not downloaded them from the computer for completion before your visit.

We ask every patient to update a health and insurance form every 12 months. It might seem like an inconvenience to you, but it is vitally important to your dental care that we know any changes in your health. Also, these forms allow us to keep phone numbers, addresses and insurance information up to date. Thank you for your cooperation. For your convenience, forms can be downloaded from this website.

Please call us at Lindenhurst Office Phone Number (631) 226-5252 with any questions or to schedule an appointment.