Summary

Dr. Kostas Sideridis treats obesity and overweight, pediatric obesity, and abdominal pain, and performs colonoscopy and infusion clinic services. He practices gastroenterology with 27 years of experience and also offers substance use disorder screening. Dr. Sideridis is affiliated with Northwell Health Plainview Hospital, Long Island Jewish Medical Center, Northwell Health Hospital, Syosset Hospital, and Katz Women's Hospital, and sees patients in Syosset and New Hyde Park, New York. He speaks English and Spanish. Patients on Vitals rate Dr. Sideridis 4.19 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 27 years of experience
  • speaks English, Spanish
  • New York Institute Of Technology College Of Osteopathic Medicine
  • 22 written reviews
  • 1 specialty
  • 11 areas of expertise
  • 6 hospital affiliations
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Kostas Sideridis has 3 locations

Long Island Gastro

121 Eileen WaySyosset, NY 11791
Mon9:00 am - 6:00 pm
Tue9:00 am - 6:00 pm
Wed9:00 am - 6:00 pm
Thu9:00 am - 6:00 pm
Fri9:00 am - 6:00 pm
Sat8:30 am - 1:30 pm
SunClosed

Long Island Jewish Medical Center

27005 76th AveNew Hyde Park, NY 11040

Northwell Health Hospital

300 Community DrManhasset, NY 11030

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Dr. Kostas Sideridis, DO
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Dr. Kostas Sideridis, DOAshley Anderson, APRNDr. Michael Dann, MDLynn Collette-Zachar, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.2 
0 
5 
4 
27 Years of Experience 22 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English Speaks English
Syosset , NYSacramento , CANew York , NYTallahassee , FL
Med School: New York Institute Of Technology College Of Osteopathic Medicine Med School: East Tennessee State University - Quillen College of Medicine Med School: State University of New York Med School: Regis College
Current Profile
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Insurance Plans Accepted by Dr. Kostas Sideridis

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Kostas Sideridis has the following specialty

Specialty Expertise

Dr. Kostas Sideridis has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastrointestinal Diseases (GI Diseases)
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

27 Years Experience

Dr. Kostas Sideridis holds an expired medical license in the state of New York.

Medical License

Doctor Of Osteopathy with an expired medical license in the state of New York that expired in 2026.

Education & Training

Medical School

Graduated from New York Institute Of Technology College Of Osteopathic Medicine in 1999.

NPI Number

Dr. Sideridis' NPI number is 1003913682.

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Frequently Asked Questions

Is Dr. Kostas Sideridis accepting new patients?
Dr. Kostas Sideridis is accepting new patients on Vitals. View Dr. Kostas Sideridis's profile on Vitals to make an appointment.
Does Dr. Kostas Sideridis accept my insurance?
You can see the insurance plans that Dr. Kostas Sideridis accepts on their Vitals profile.
Does Dr. Kostas Sideridis accept virtual/telehealth appointments?
Dr. Kostas Sideridis has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Kostas Sideridis speak?
Dr. Kostas Sideridis speaks English and Spanish.
Where is Dr. Kostas Sideridis's office located?
Dr. Kostas Sideridis's office is located at 121 Eileen Way, Syosset, NY, 11791.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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