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Patients in Syosset and around Nassau County see Dr. Kostas Sideridis, a gastroenterologist, at Long Island Medical PC.
Medical school: New York College of Osteopathic Medicine of New York Institute of Technology, class of 1999.
You'll find Dr. Sideridis at 121 Eileen Way, Syosset, NY 11791. Call (516) 584-6400 to schedule. Other listed locations: 221 Jericho Tpke, Syosset, NY 11791; 237 Jericho Tpke, Syosset, NY 11791. For Medicare patients: Dr. Sideridis accepts assignment. Telehealth visits are listed as available.
On the hospital side, Dr. Sideridis holds affiliations with Plainview Hospital, North Shore University Hospital and Long Island Jewish Medical Center.
Reviews here come only from patients. If you've seen Dr. Sideridis, add yours.
Dr. Sideridis at a glance
- Specialty
- Gastroenterologist
- Credentials
- MD
- Practice
- Long Island Medical PC
- Address
- 121 Eileen Way, Syosset, NY 11791
- Phone
- (516) 584-6400
- Other locations
- 221 Jericho Tpke, Syosset, NY 11791; 237 Jericho Tpke, Syosset, NY 11791
- Medical school
- New York College of Osteopathic Medicine of New York Institute of Technology (1999)
- Hospital affiliations
- Plainview Hospital, North Shore University Hospital, Long Island Jewish Medical Center
- Medicare assignment
- Accepts
- Telehealth
- Available
- NPI number
- 1003913682
- NY license no.
- 220299
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 953 people with traditional Medicare, average age 76
- Most common services billed to Medicare
- Infusion into a vein for hydration, 31-60 minutes
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
- Biopsy of large bowel using a flexible endoscope
- Procedures on Medicare Care Compare
- Upper gastrointestinal (GI) endoscopy for acid reflux 239 procedures
- Colonoscopy 174 procedures
- Removal of skin lesions 18 procedures
- Medicare quality score (MIPS 2024)
- 93 out of 100
- New York Medicaid
- Enrolled fee-for-service provider since 2006. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Long Island Jewish Medical Center · North Shore University Hospital · Plainview Hospital
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing gastroenterologists? See 3 in Syosset or 109 across Long Island.
Other gastroenterologists in Long Island
Dr. David E. Milkes, MDGastroenterologist · Gastrointestinal Care of Long Island PLLCNo reviews yetMassapequa, NY
Dr. David Friedel, MDGastroenterologist · North Shore Medical Group of the Mount Sinai School of MedicineNo reviews yetWantagh, NY
Dr. Diana Y. Wee, MDGastroenterologist · North Shore Lij Medical Group at North Nassau, PCNo reviews yetNew Hyde Park, NY
Dr. Eugene Sullivan, DOGastroenterologist · Medical Services of Uniondale PCNo reviews yetUniondale, NY
Dr. Felice Mirsky, MDGastroenterologist · Medical Services of Uniondale PCNo reviews yetMineola, NY
Dr. Gautam M. Reddy, MDGastroenterologist · Gastrocare, Li PCNo reviews yetValley Stream, NYWrite a review
Frequently Asked Questions
With Long Island Medical PC, at 121 Eileen Way, Syosset, NY 11791.
Call the office at (516) 584-6400.
Yes — Dr. Sideridis accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Plainview Hospital, North Shore University Hospital and Long Island Jewish Medical Center.
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