Robert Thomas Chatalbash, MD
NPI 1770696197ActiveIndividual· Internal Medicine, Gastroenterology· Bay Shore, NY
Internal Medicine, Gastroenterology (MD) with North Shore-Lij Medical PC, practicing in Bay Shore, New York. Their prescriptions cost Medicare Part D more than their services did: $166,677 for 1,464 claims, against $92,256 paid for services in 2024. Braintree Laboratories, Inc. reported $204.06 in payments in 2025, mostly food and beverage. Lists Long Island Jewish Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1770696197 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Feb 16, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 1640901 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 449 |
|---|---|
| Services billed | 1,005 across 38 procedure codes |
| Paid by Medicare | $92,256 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,464 · 2,223 30-day fills |
|---|---|
| Patients | 361 |
| Total drug cost | $166,677 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- North Shore-Lij Medical PCStaten Island, NY · 6,440 clinicians
Hospital affiliations
- Long Island Jewish Medical CenterNew Hyde Park, NY
- North Shore University HospitalManhasset, NY
- Ns/Lij Hs Southside HospitalBay Shore, NY
Industry payments (Open Payments)
- 2025$204.06 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Braintree Laboratories, Inc. | $204.06 | 3 |
What the 2025 payments were for
- Food and Beverage$204.06 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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