South Bay OB/GYN 

320 Montauk Highway
West Islip, NY 11795

Phone: (631) 587-2500
Fax: (631) 587-0292


Monday - Thursday: 7:30am - 9:00pm
Friday: 7:30am - 2:00pm
Saturday Sonograms only: 7:30am - 12:00pm
Closed Sunday

For Appointments
New Patients

Patient Appointments

We ask that you arrive at least 30 minutes before your appointment to complete all the necessary paperwork. To better serve your medical needs, we ask that you provide us with as much medical information as possible.

For your convenience, you can download, print and fill out the forms (by clicking here) or we can mail the paperwork to you before your appointment to help facilitate this process.


High-Risk Obstetrics / Perinatology

Menopause Management and Osteoporosis Screening

Reproductive Endocrinology and Infertility

Voiding Dysfunction and Urinary Leakage

Diana Garretto, MD
Diana Garretto, MD
(631) 723-5000
for an appointment
David Garry, DO
David Garry, DO
for an appointment

Stony Brook University Associates in Obstetrics & Gynecology is offering Telehealth services which will allow our patients to receive our high-quality care from the safety and privacy of their home.

To see if your Ob/Gyn needs can be met virtually, please call us at (631) 444-4686.

If you have already booked a Telehealth visit and have questions about connecting to Microsoft Teams for your visit, please call one of our representatives at (631) 638-0597 Monday through Friday from 8 am to 6 pm. They will be happy to assist you. If you require support outside of these hours, please visit