Commack
- Sisselman Medical Group -
After-Hours Care
Sisselman Medical Group should be your first call for care. We have same day appointments available for sick visits, and urgent care is often fragmented care and may not be any shorter a wait than with us. We are open some mornings before 8 am and some evenings until 7 pm and every Saturday from 8 am till 1 pm.
We have a provider with access to your chart available 24 hours a day. For care that cannot wait until we re-open, our on-call answering service can be reached at 1-800-474-1125 to connect you with one of our providers.
Sisselman Medical Group's Commack office is located at 2171 Jericho Turnpike, Suite 304 — right in the heart of one of Suffolk County's most established and family-friendly communities. We're here for the whole family: from teen athletes at Commack High School to working parents squeezing in a lunch-hour appointment to retirees who want a doctor who actually knows their name.
Commack is a community that takes pride in quality — top-rated schools, well-kept neighborhoods, and neighbors who look out for each other. We share those same values in our practice. Dr. Stephen Sisselman and Dr. Jill Sisselman bring board-certified internal medicine and family medicine expertise to every visit, with the kind of personalized attention you just don't get at a walk-in clinic.
Serving Commack and Surrounding Suffolk County Communities
Our Commack office sits right along Jericho Turnpike with easy access from the Long Island Expressway (I-495) and the Northern State Parkway — making us convenient for patients throughout western Suffolk County. We're close to East Northport, Hauppauge, Kings Park, Smithtown, and Huntington.
Nearby areas we serve:
• East Northport
• Hauppauge
• Kings Park
• Smithtown
• Huntington
• Elwood
• Dix Hills
Services Offered at our Commack Location
• Annual physicals and preventive care
• Same-day sick visits
• Chronic disease management (diabetes, hypertension, high cholesterol)
• Women's health and adolescent care (ages 12+)
• Immunizations and vaccinations
• Lab work and diagnostic referrals
• Urgent care triage and follow-up
Commack
Office
Phone & Fax
Phone: 631-670-6525
Fax: 631-670-6526
Hours
- Mon, Wed
- -
- Tue, Fri
- -
- Thursday
- -
- Saturday
- -
- Sunday
- Closed
Looking for a doctor in Commack?
We'd love to meet you. Call our Jericho Turnpike office or book online — same-day appointments are often available.

