Demetrios James Tzimas, M.D.
NPI 1568605152ActiveIndividual· Internal Medicine, Gastroenterology· Huntington, NY
Internal Medicine, Gastroenterology (M.D.) in Huntington, New York, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $432,004 for 150 claims, against $180,898 paid for services in 2024. Braintree Laboratories, Inc. was the largest of 2 companies reporting payments in 2025, $225.19 in all, mostly food and beverage.
Overview
| NPI | 1568605152 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 12, 2009 |
| Last updated in NPPES | Nov 3, 2020 |
| Certified by provider | Nov 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 260464 | 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 | 537 |
|---|---|
| Services billed | 1,318 across 67 procedure codes |
| Paid by Medicare | $180,898 |
Part D prescriptions in 2024
| Prescriptions (claims) | 150 · 257 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $432,004 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Gastroenterology |
Medical group
- North Shore-Lij Medical PCStaten Island, NY · 6,440 clinicians
Hospital affiliations
- North Shore University HospitalManhasset, NY
- Ns/Lij Hs Huntington HospitalHuntington, NY
Industry payments (Open Payments)
- 2025$225.19 · 4 payments from 2 companies
- 2024$333.36 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Braintree Laboratories, Inc. | $204.06 | 3 |
| Olympus America Inc. | $21.13 | 1 |
What the 2025 payments were for
- Food and Beverage$225.19 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 gastroenterologists in Huntington · All gastroenterologists in New York