Dean Nick Cassimatis, M.D.
NPI 1821097742ActiveIndividual· Internal Medicine, Gastroenterology· New Windsor, NY
Internal Medicine, Gastroenterology (M.D.) in New Windsor, New York, trained at New York Medical College (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $862,684 for 2,408 claims, against $131,788 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $1,939 in all, mostly food and beverage.
Overview
| NPI | 1821097742 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 21, 2005 |
| Last updated in NPPES | Oct 3, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 175299 | 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 | 636 |
|---|---|
| Services billed | 1,156 across 39 procedure codes |
| Paid by Medicare | $131,788 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,408 · 6,176 30-day fills |
|---|---|
| Patients | 720 |
| Total drug cost | $862,684 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Gastroenterology |
Hospital affiliation
- Montefiore St Luke's CornwallNewburgh, NY
Industry payments (Open Payments)
- 2025$1,939 · 98 payments from 18 companies
- 2024$2,956 · 128 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $544.46 | 30 |
| Takeda Pharmaceuticals U.S.A., Inc. | $193.24 | 10 |
| Genzyme Corporation | $185.44 | 10 |
| Janssen Biotech, Inc. | $178.02 | 9 |
| Aimmune Therapeutics, Inc. | $174.97 | 8 |
What the 2025 payments were for
- Food and Beverage$1,939 · 98 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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