John C. Halbrook, MD
NPI 1992782924ActiveIndividual· Internal Medicine, Hematology & Oncology· Meridian, MS
Internal Medicine, Hematology & Oncology (MD) in Meridian, Mississippi, trained at University of Mississippi School of Medicine (class of 1974). In 2024 Medicare paid $994,280 for 338 patients, and Part D covered 762 of their prescriptions, 84% of them generic. Janssen Biotech, Inc. was the largest of 44 companies reporting payments in 2025, $3,913 in all, mostly food and beverage.
Overview
| NPI | 1992782924 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 30, 2005 |
| Last updated in NPPES | Oct 15, 2024 |
| Certified by provider | Oct 15, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 07013 | MS |
| Specialist | 174400000X | 07013 | MS |
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 - Medical Oncology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 48,199 across 95 procedure codes |
| Paid by Medicare | $994,280 |
Part D prescriptions in 2024
| Prescriptions (claims) | 762 · 1,024 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $1,296,406 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology, Internal Medicine |
Medical group
- Meridian Oncology Associates PLLCMeridian, MS · 4 clinicians
Hospital affiliations
- Anderson Regional Medical CenterMeridian, MS
- Ochsner Rush HospitalMeridian, MS
Other facilities
- Accentcare Home Health of CarthageHome health agency · Carthage, MS
Industry payments (Open Payments)
- 2025$3,913 · 164 payments from 44 companies
- 2024$3,946 · 162 payments from 37 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $272.68 | 10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $242.39 | 6 |
| Novartis Pharmaceuticals Corporation | $213.27 | 10 |
| Regeneron Healthcare Solutions, Inc. | $196.17 | 4 |
| Astrazeneca Pharmaceuticals LP | $194.50 | 8 |
What the 2025 payments were for
- Food and Beverage$3,692 · 161 payments
- Education$221.23 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Meridian
- 1427269331
- 1720241201
- 1780793059