Chaim Abittan, MD
NPI 1972512002ActiveIndividual· Internal Medicine, Gastroenterology· Great Neck, NY
Internal Medicine, Gastroenterology (MD) with Gastrointestinal Care of Long Island PLLC, practicing in Great Neck, New York. Their prescriptions cost Medicare Part D more than their services did: $747,808 for 801 claims, against $248,361 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $2,565 in all, mostly food and beverage. Lists North Shore University Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1972512002 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 7, 2006 |
| Last updated in NPPES | Mar 7, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 202628 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 635 |
|---|---|
| Services billed | 1,916 across 28 procedure codes |
| Paid by Medicare | $248,361 |
Part D prescriptions in 2024
| Prescriptions (claims) | 801 · 1,470 30-day fills |
|---|---|
| Patients | 392 |
| Total drug cost | $747,808 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Gastrointestinal Care of Long Island PLLCAlbany, NY · 183 clinicians
Hospital affiliations
- North Shore University HospitalManhasset, NY
- Northwell Hospital Glen CoveGlen Cove, NY
- NYU Langone HospitalsNew York, NY
- St Francis Hospital - the Heart CenterRoslyn, NY
Industry payments (Open Payments)
- 2025$2,565 · 178 payments from 18 companies
- 2024$2,137 · 136 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $675.36 | 50 |
| Lilly USA, LLC | $339.59 | 27 |
| Takeda Pharmaceuticals U.S.A., Inc. | $295.49 | 20 |
| Janssen Biotech, Inc. | $282.19 | 22 |
| Ardelyx, Inc. | $219.97 | 16 |
What the 2025 payments were for
- Food and Beverage$2,545 · 177 payments
- Grant$20.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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