Michael W. Mendelson, M.D.
NPI 1043323835ActiveIndividual· Internal Medicine· Port Jefferson Station, NY
Internal Medicine (M.D.) in Port Jefferson Station, New York, trained at Saint Louis University School of Medicine (class of 1965). Mostly services rather than prescriptions: Medicare paid $9,938 for 1,221 patients in 2024, with only 31 Part D claims.
Overview
| NPI | 1043323835 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 16, 2006 |
| Last updated in NPPES | May 24, 2021 |
| Certified by provider | May 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 110115 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,221 |
|---|---|
| Services billed | 1,493 across 1 procedure code |
| Paid by Medicare | $9,938 |
Part D prescriptions in 2024
| Prescriptions (claims) | 31 · 73 30-day fills |
|---|---|
| Total drug cost | $2,149 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1965 |
| Medicare specialty | Internal Medicine |
Medical group
- Cardiac Ekg Interpretation, P. C.West Islip, NY · 57 clinicians
Hospital affiliations
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY
- St Catherine of Siena HospitalSmithtown, NY
- St Charles HospitalPort Jefferson, NY
- Suny/Stony Brook University HospitalStony Brook, NY
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 internal medicine physicians in Port Jefferson Station · All internal medicine physicians in New York