Lionel S. D'Souza, MD
NPI 1679733182ActiveIndividual· Internal Medicine, Gastroenterology· East Setauket, NY
Internal Medicine, Gastroenterology (MD) with Icahn School of Medicine at Mount Sinai, practicing in East Setauket, New York. In 2024 Medicare paid $170,435 for 531 patients, and Part D covered 398 of their prescriptions, 83% of them generic. Olympus America Inc. was the largest of 9 companies reporting payments in 2025, $4,046 in all, mostly consulting fees. Lists Mount Sinai Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1679733182 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 10, 2008 |
| Last updated in NPPES | Jul 25, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 272023 | 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 | 531 |
|---|---|
| Services billed | 1,175 across 79 procedure codes |
| Paid by Medicare | $170,435 |
Part D prescriptions in 2024
| Prescriptions (claims) | 398 · 825 30-day fills |
|---|---|
| Patients | 156 |
| Total drug cost | $126,362 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Icahn School of Medicine at Mount SinaiNew York, NY · 2,843 clinicians
Hospital affiliations
- Mount Sinai HospitalNew York, NY
- Mount Sinai WestNew York, NY
Industry payments (Open Payments)
- 2025$4,046 · 20 payments from 9 companies
- 2024$44,642 · 88 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus America Inc. | $1,736 | 3 |
| Olympus Medical Systems Corporation | $825.00 | 1 |
| Boston Scientific Corporation | $577.79 | 4 |
| 3-D Matrix, Inc. | $320.65 | 3 |
| Medtronic, Inc. | $319.66 | 3 |
What the 2025 payments were for
- Consulting Fee$2,475 · 3 payments
- Food and Beverage$1,202 · 16 payments
- Travel and Lodging$368.62 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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