John S. Hrom, MD
NPI 1134238496ActiveIndividual· Internal Medicine, Hematology & Oncology· Hattiesburg, MS
Internal Medicine, Hematology & Oncology (MD) in Hattiesburg, Mississippi, trained at University of Mississippi School of Medicine (class of 2003). In 2024 Medicare paid $5,674,606 for 969 patients, and Part D covered 4,424 of their prescriptions, 87% of them generic. Pfizer Inc. was the largest of 26 companies reporting payments in 2025, $1,379 in all, mostly food and beverage.
Overview
| NPI | 1134238496 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 30, 2006 |
| Last updated in NPPES | Aug 3, 2020 |
| Certified by provider | Aug 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 18990 | MS |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 969 |
|---|---|
| Services billed | 416,086 across 130 procedure codes |
| Paid by Medicare | $5,674,606 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,424 · 5,441 30-day fills |
|---|---|
| Patients | 489 |
| Total drug cost | $7,186,656 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Hattiesburg Clinic PAHattiesburg, MS · 537 clinicians
Hospital affiliations
- Forrest General HospitalHattiesburg, MS
- Highland Community HospitalPicayune, MS
- Marion General HospitalColumbia, MS
- Merit Health WesleyHattiesburg, MS
- South Central Reg Med CtrLaurel, MS
Other facilities
- Forrest General Home CareHome health agency · Hattiesburg, MS
- Forrest General Home Care and HospiceHospice · Hattiesburg, MS
Industry payments (Open Payments)
- 2025$1,379 · 64 payments from 26 companies
- 2024$1,710 · 77 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $145.79 | 7 |
| Abbvie Inc. | $114.50 | 5 |
| Glaxosmithkline, LLC. | $105.35 | 5 |
| Astrazeneca Pharmaceuticals LP | $104.68 | 6 |
| Exelixis Inc. | $92.30 | 3 |
What the 2025 payments were for
- Food and Beverage$1,379 · 64 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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