David Michael Horowitz, M.D.
NPI 1811901200ActiveIndividual· Internal Medicine· Smithtown, NY
Internal Medicine (M.D.) in Smithtown, New York, trained at New York University Medical College - Nlg (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $249,028 for 1,840 claims, against $107,105 paid for services in 2024. Pfizer Inc. reported $45.68 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1811901200 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 28, 2006 |
| Last updated in NPPES | Feb 21, 2024 |
| Certified by provider | Feb 21, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 142369 | 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 | 123 |
|---|---|
| Services billed | 1,285 across 21 procedure codes |
| Paid by Medicare | $107,105 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,840 · 4,200 30-day fills |
|---|---|
| Patients | 118 |
| Total drug cost | $249,028 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | New York University Medical College - Nlg |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Suny/Stony Brook University HospitalStony Brook, NY
Other facilities
- Catholic Home CareHome health agency · Farmingdale, NY
Industry payments (Open Payments)
- 2025$45.68 · 2 payments from 1 company
- 2024$187.91 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $45.68 | 2 |
What the 2025 payments were for
- Food and Beverage$45.68 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 60 internal medicine physicians in Smithtown · All internal medicine physicians in New York