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Stephen Sisselman

Dr Stephen Sisselman , DO

Internal Medicine


Dr. Stephen Sisselman received his undergraduate degree from Tufts University, in Massachusetts. He then attended Medical School at the New York College of Osteopathic Medicine. After finishing Internship at Massapequa General Hospital, he completed a Residency in Internal Medicine at Christiana Hospital, in Newark, Delaware. In private practice since the year 2000, Dr. Sisselman is dedicated to providing ... 
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Takes time to answer my questions
Provides follow-up as needed

Based on patient feedback. Read the reviews


Dr. Sisselman's Rating
Patient Perspective
3.0 Explains conditions and treatments
4.5 Takes time to answer my questions
4.5 Provides follow-up as needed
Office Rating
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2171 Jericho Turnpike Suite 304, Commack, NY, 11725
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Sisselman Medical Group - Commack Location
2171 Jericho Turnpike Suite 304
Commack, NY, 11725
"Absolute gentleman - Down to earth, normal guy that understands the bullshit people are going through and makes it a priority to listen."
  • January 3, 2022
"Excellent - Was very understanding and caring"
  • January 3, 2022
"Excellent start to finish - I got him because my insurance changed—I couldn’t be happier"
  • January 3, 2022
"I enjoyed my first visit with Dr. Sisselman. - Dr. Sisselman is extremely knowledgeable, helpful and caring. My main issue is my obesity. He gave me some great ideas to help me with my weight loss goals. I am looking forward to my next visit."
  • January 2, 2022
"Went there to get a Covid test. It was quick & easy. - Dr. Sisselman was extremely nice , caring & explained everything."
  • January 2, 2022
"Listen to my symptoms and prescribed meds - Office was able to schedule appt quickly. Dr tested me for covid19 and the Flu, both negative. When I called back 2 days later he prescribed me medication for sinus infection which helped"
  • January 2, 2022
"Doctor listened to my concerns and recommended additional action. - Office personnel very pleasant."
  • October 11, 2021
"Was accurate as to diagnosis - concerned"
  • September 6, 2021
"Not only did he listen to me but he knew exactly what ailed me. - Great job overall. Even followed up with me personally."
  • September 4, 2021
"Great - Dr S Sissleman was very comforting. He listened to my concerns. Explained what will be done. Was very happy with my first visit."
  • September 3, 2021
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2171 Jericho Turnpike Suite 304
Mon9:00 am - 5:00 pm
Tue8:00 am - 7:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 7:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 1:00 pm
Sisselman Medical Group - Commack Location
627 Broadway Suite 1
Mon8:00 am - 4:30 pm
Tue8:00 am - 7:00 pm
Wed7:30 am - 7:00 pm
Thu8:00 am - 4:00 pm
Fri7:30 am - 4:00 pm
Sat8:00 am - 1:00 pm


  • Internal Medicine


Christiana Care Center
Graduated 2000
Massapequa General Hospital
Graduated 1997
Medical School
New York College Of Osteopathic Medicine
Graduated 1996
Tufts University
Graduated 1990


Please verify insurance information directly with your doctor’s office as it may change frequently.


Dr Jill Sisselman, DO
Family Medicine
30 Years Experience