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Dr. Stephen Sisselman, DO

Dr. Stephen Sisselman, DO

Internal Medicine*
25+ years of experience

Dr. Stephen Sisselman, DO is an internist in Massapequa, NY and has over 25 years of experience in the medical field. He graduated from New York Institute of Technology College of Osteopathic Medicine in 1996. He is affiliated with medical facilities such as Newyork-Presbyterian Queens and Mercy Medical Center. He is accepting new patients and telehealth appointments.

4.7 Star Rating
Based on 207 reviews 4.7 Star Rating (207 reviews)

Practice

627 Broadway Ste 1 Massapequa, NY 11758
Telehealth available
Patient Favorite Award

Dr. Sisselman is a patient favorite Internist

The Patient Favorite badge is awarded to top-performing providers who surpass average ratings and comments, reflecting their commitment to exceptional patient care. Read our methodology

Experience Check

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Dr. Sisselman's Reviews

Likelihood to recommend Dr. Sisselman

4.7
207 ratings, 153 with a written review
5 star
87%
87%
4 star
4%
4%
3 star
2%
2%
2 star
1%
1%
1 star
5%
5%

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Excellent Doctor
Excellent Dr.with a great staff I highly recommend.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Apr 20, 2025
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Very upsetting experience
Dr. Sisselman has been my primary care Dr. for many years. I was one week post COVID and was experiencing blood pressure and cardiac issues. My cardiologist’s office wouldn’t see me due to their policy being 2 weeks from date of test. The office staff was amazing and squeezed me in and asked me to wear a mask. Dr. Sisselman came into my appointment with an attitude and literally told me that he was mad that his office staff scheduled me for this appointment. I was taken aback and mentioned how the most recent protocols said 5 days post test is back to work already, which I was back to work at this point , as I was past the 5 days by this appointment. His response to me was well there are no more protocols anymore and unfortunately the level of care for people with covid is lower because providers are afraid of getting sick. He noticed the look on my face and backpedaled with since you’re here I guess we should do what we can to help you. Very upsetting. I will be looking for a new Dr.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Wait times
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
Helpful
Upset Patient – Mar 14, 2025
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Very helpful
Dr Sisselman and his office was very helpful in accommodating my schedule and professional during my visit.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mar 06, 2025
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Sisselman Medical Group
My visits to his office are always pleasant and welcoming.His staff are professional and courteous.Dr. Sisselman is a caring and a consummate professional.He listens and answers all concerns during my examinations and ensures I fully understand my medical conditions.I highly recommend his practice.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Vin Sicari – Mar 05, 2025
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(Dr Sisselman's) Practice Makes Perfect
I am a long-time patient of Dr. Stephen Sisselman. What stands out about the practice is an attention to detail. The staff is professional and efficient, from the personnel at the front desk to the technicians in the lab to the practitioners and doctors in the examining room. NEVER have I once been kept waiting beyond my appointed time, something that most physician offices cannot claim. Once situated in the examining room, everything process according to clockwork: Vitals are taken, histories are reviewed, and examinations are done in a manner that is not rushed or happenstance. Any concerns, any questions, any comments, any matters are addressed in a forthright manner. Consider that every proceeding is punctual without sacrificing the ability to explore personal issues and make sound diagnoses and you form a clear picture of Dr. Sisselman's methods of operation. What can I say but 'practice makes perfect!'
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Leaving my MARC – Jan 23, 2025
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Excellent Doctor
I personally cannot say enough about Dr. Sisselman. He is the most caring, concerned, supportive, knowledgeable Doctor I have ever had. You truly cannot find Doctors like him anymore. It is refreshing and so comforting to know you can rely on someone that truly has your best interest at heart and cares. So Grateful! I would recommend him to anyone and everyone I know.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Kristin D. – Jan 19, 2025
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Excellent doctor
Dr. SISSELMAN is always on top of my medical status and conditions. Appointments involve little waiting .office staff are friendly and competent. I've been his patient for many years and am totally satisfied.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Douglas Kelban – Dec 07, 2024
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Sisselman Medical
Friendliness of staff. Limited wait time Dr explicitly going into details
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Robert Connell – Nov 29, 2024
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Five Star Practice
Modern practice with lab services on site, staff from receptionist to medical staff awesome, online services from their portal to review lab. medical documents, check in and copay easy to use, appointments confirmation text to your phone and plenty of onsite parking. Medications orders and refills easily transmitted to your pharmacy. Highly recommend Office and Dr Sisselman for your medical needs.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Angel F – Oct 30, 2024
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Very happy patient
Dr. Sisselman is such a great Doctor, I am very happy I have been with him for the past year. He is very professional and makes me feel comfortable. Thank you Dr. Sisselman for being a caring doctor.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Andrea Sangermano – Oct 11, 2024
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Best PCP
I’ve been going to the office of Dr Sisselman for a number of years now, and I am happy with the attentive and accurate care I receive. The staff is pleasant, the office is clean, and Dr Sisselman gives thorough care.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Maria C. Maris – Sep 17, 2024
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Good visit
Dr Sisselman is great. He is professional and caring.
What went well
No results
What could be improved
No results
Helpful
P. Walsh – Sep 06, 2024
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Five star doc!
On time, great staff, available!
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jul 13, 2024
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Excellent Doctor
Dr Sisselman has been my doctor for over 24 years. For me to stay with one doctor that long, he has to be a good doctor. Never fails to answer my questions and concerns. I have recommended his practice to friends and family. No complaints yet. Keep up the good work. See you on my next visit.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Pete – Jun 29, 2024
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Dr. Sisselman took time to walk through the process and made sure, I understood the process. The Nurses were professional, and efficient, as where the Office staff.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jun 27, 2024
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First visit
So far so good. First time in this practice and I was very happy. Hardly no wait time, felt that everyone was very pleasant. Dr took his time and seemed interested in my concerns. Would recommend.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Apr 18, 2024
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Best doctor ever
Best doctor ever!
What went well
No results
What could be improved
No results
Helpful
Steven Volk – Mar 20, 2024
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Doctor Sisselman always gives each patient the proper time and care and never rushes you out to get to the next patient. His medical knowledge is terrific and he gets it right every time following up to make sure that you are on the proper path for recovery from whatever ails you.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Tom Sinclair – Mar 15, 2024
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Excellent care
A dedicated professional who explains any reservations you might have about your treatment and condition.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Mar 06, 2024
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ONE OF A KIND
He listens very carefully to you and makes you feel like human and also at home. He doesn’t rushes you like I gotta see the next patient. I couldn’t have asked for more. He’s the best
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Isaac – Feb 22, 2024
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About Me

care philosophy

We listen to every patients concern and tailor an individualized approach to your care.

biography

Excellence in Internal Medicine and Primary Care.  We are a Patient Centered Medical Home which puts the patient first.  Same day appointments ALWAYS available.
  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Christiana Care Center

    Residency Hospital
  • Ball State University - M.b.a Health Economics Policy And Administration

    2021
  • Christiana Care Health System

    Residency Hospital, 2000
  • Massapequa General Hospital

    Internship Hospital, 1997
  • New York Institute Of Technology College Of Osteopathic Medicine

    Medical School, 1996
  • Tufts University

    Undergraduate School, 1990
American Board of Medical Specialties®
American Board of Internal Medicine®
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
Patient Favorite Award

Dr. Sisselman is a patient favorite Internist

    Read our methodology

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    Locations

    Practice

    Office627 Broadway Ste 1 Massapequa, NY 11758
    1
    • Call
    • Fax
    • Hours
      • Mon: 8:00am - 4:30pm
      • Tue: 8:00am - 7:00pm
      • Wed: 7:30am - 7:00pm
      • Thu: 8:00am - 4:00pm
      • Fri: 7:30am - 4:00pm
      • Sat: 8:00am - 1:00pm
    • Directions

    Practice

    Ronkonkoma Medical Care PLLC2171 Jericho Tpke Ste 304 Commack, NY 11725
    2

    Practice

    Office100 Veterans Blvd Ste 2 Massapequa, NY 11758
    3

    Affiliated Hospitals

    • Mercy Medical Center

      1000 N Village Ave
      Rockville Centre, NY 11570
      Recipient of 4
      hospital awards

      How patients felt about the care they received at this hospital.

      84%
      Patients said they were given information about recovering at home
      74%
      Patients said that nurses always listened to them and explained things well

      1% lower than the national average

      View all patient feedback
    • Newyork-Presbyterian Queens

      5645 Main St
      Flushing, NY 11355
      Recipient of 43
      hospital awards

      America’s 50 Best Hospitals for Surgical Excellence Award™ (2025)

      Top 5% in the nation for consistently delivering clinical quality

      America's 100 Best Hospitals Award™ (2025, 2024)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      82%
      Patients said they were given information about recovering at home

      2% lower than the national average

      75%
      Patients said that doctors always listened to them and explained things well

      1% lower than the national average

      View all patient feedback
    • St Joseph Hospital

      4295 Hempstead Tpke
      Bethpage, NY 11714

      How patients felt about the care they received at this hospital.

      85%
      Patients said they were given information about recovering at home

      1% higher than the national average

      78%
      Patients said that nurses always listened to them and explained things well

      3% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality