William J. Kornrich, MD
NPI 1144332198ActiveIndividual· Internal Medicine· Riverhead, NY
Internal Medicine (MD) in Riverhead, New York, trained at State University of New York at Stony Brook, School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $492,019 for 7,270 claims, against $264,900 paid for services in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $110.64 in all, mostly food and beverage.
Overview
| NPI | 1144332198 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Mar 10, 2021 |
| Certified by provider | Mar 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 182977 | 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 | 805 |
|---|---|
| Services billed | 4,001 across 32 procedure codes |
| Paid by Medicare | $264,900 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,270 · 16,726 30-day fills |
|---|---|
| Patients | 847 |
| Total drug cost | $492,019 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- New York UniversityNew York, NY · 6,134 clinicians
Hospital affiliations
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY
- Long Island Community HospitalPatchogue, NY
- Suny/Stony Brook University HospitalStony Brook, NY
Other facilities
- Catholic Home CareHome health agency · Farmingdale, NY
- Centerwell Home HealthHome health agency · Hauppauge, NY
- Extended Home CareHome health agency · Brooklyn, NY
- Peconic Bay Homehealth ServicesHome health agency · Riverhead, NY
- Tender Loving Care, An Amedisys CompanyHome health agency · Medford, NY
Industry payments (Open Payments)
- 2025$110.64 · 5 payments from 4 companies
- 2024$50.58 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $54.98 | 2 |
| Medtronic, Inc. | $20.63 | 1 |
| Exact Sciences Corporation | $19.04 | 1 |
| Astrazeneca Pharmaceuticals LP | $15.99 | 1 |
What the 2025 payments were for
- Food and Beverage$94.65 · 4 payments
- Education$15.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 internal medicine physicians in Riverhead · All internal medicine physicians in New York