Michael Ghiassi, DO
NPI 1255950440ActiveIndividual· Internal Medicine· Riverhead, NY
Internal Medicine (DO) in Riverhead, New York, trained at Lincoln Memorial University Medical Department (class of 2019). Mostly services rather than prescriptions: Medicare paid $101,740 for 611 patients in 2024, with only 16 Part D claims. Pfizer Inc. reported $39.33 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1255950440 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 8, 2020 |
| Last updated in NPPES | Feb 4, 2025 |
| Certified by provider | Feb 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 322416 | NY |
| Internal Medicine | 207R00000X | OS024395 | PA |
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 - Internal Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 611 |
|---|---|
| Services billed | 680 across 9 procedure codes |
| Paid by Medicare | $101,740 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 25 30-day fills |
|---|---|
| Total drug cost | $298.40 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Lincoln Memorial University Medical Department |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Internal Medicine |
Medical groups
- Aria Health Physician ServicesPhiladelphia, PA · 450 clinicians
- Abington Memorial HospitalAbington, PA · 442 clinicians
Hospital affiliations
- Jefferson Health- NortheastPhiladelphia, PA
- Jefferson Lansdale HospitalLansdale, PA
Industry payments (Open Payments)
- 2025$39.33 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $39.33 | 2 |
What the 2025 payments were for
- Food and Beverage$39.33 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Riverhead
- 1144332198
- 1306424585
- 1609988666
- 1750969895
- 1912921651
- 1093894446
- 1235870676
- 1427706662
- 1174960207
- 1497992291
- 1548625288
- 1639201569
All 24 internal medicine physicians in Riverhead · All internal medicine physicians in New York