Mark Allan Harrison, MD
NPI 1285799585ActiveIndividual· Internal Medicine, Cardiovascular Disease· Poughkeepsie, NY
Internal Medicine, Cardiovascular Disease (MD) in Poughkeepsie, New York, trained at Icahn School of Medicine at Mount Sinai (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $831,818 for 5,223 claims, against $209,554 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 7 companies reporting payments in 2025, $573.53 in all, mostly food and beverage.
Overview
| NPI | 1285799585 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 27, 2006 |
| Last updated in NPPES | Sep 7, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 249392 | NY |
| Nuclear Medicine, Nuclear Cardiology | 207UN0901X | 249392 | 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 - Cardiovascular Disease (Cardiology) (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,090 |
|---|---|
| Services billed | 4,321 across 33 procedure codes |
| Paid by Medicare | $209,554 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,223 · 13,972 30-day fills |
|---|---|
| Patients | 829 |
| Total drug cost | $831,818 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Hudson Valley Cardiovascular Practice PCPoughkeepsie, NY · 70 clinicians
Hospital affiliations
- Northern Dutchess HospitalRhinebeck, NY
- Sharon HospitalSharon, CT
- Vassar Brothers Medical CenterPoughkeepsie, NY
Industry payments (Open Payments)
- 2025$573.53 · 16 payments from 7 companies
- 2024$298.68 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $222.90 | 4 |
| Abbott Laboratories | $100.96 | 2 |
| Novartis Pharmaceuticals Corporation | $93.58 | 4 |
| Bridgebio Pharma, Inc. | $69.89 | 2 |
| Amgen Inc. | $42.54 | 2 |
What the 2025 payments were for
- Food and Beverage$573.53 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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