Kostas Sideridis, DO
NPI 1003913682ActiveIndividual· Internal Medicine, Gastroenterology· Syosset, NY
Internal Medicine, Gastroenterology (DO) in Syosset, New York, trained at New York College of Osteo Medicine of New York Institute of Technology (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $1,286,267 for 3,066 claims, against $423,264 paid for services in 2024. Intra-Sana Laboratories was the largest of 20 companies reporting payments in 2025, $6,772 in all, mostly food and beverage.
Overview
| NPI | 1003913682 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Sep 17, 2006 |
| Last updated in NPPES | Jun 2, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 220299 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 953 |
|---|---|
| Services billed | 3,578 across 67 procedure codes |
| Paid by Medicare | $423,264 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,066 · 4,948 30-day fills |
|---|---|
| Patients | 703 |
| Total drug cost | $1,286,267 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | New York College of Osteo Medicine of New York Institute of Technology |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Long Island Medical PCSyosset, NY · 4 clinicians
Hospital affiliations
- Long Island Jewish Medical CenterNew Hyde Park, NY
- North Shore University HospitalManhasset, NY
- Plainview HospitalPlainview, NY
Industry payments (Open Payments)
- 2025$6,772 · 156 payments from 20 companies
- 2024$10,110 · 171 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intra-Sana Laboratories | $2,841 | 6 |
| Abbvie Inc. | $694.54 | 37 |
| Madrigal Pharmaceuticals | $580.80 | 13 |
| Genzyme Corporation | $453.84 | 12 |
| Janssen Biotech, Inc. | $423.31 | 12 |
What the 2025 payments were for
- Food and Beverage$4,272 · 155 payments
- Honoraria$2,500 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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