David G. Morris, MD
NPI 1477595643ActiveIndividual· Internal Medicine, Hematology & Oncology· Hattiesburg, MS
Internal Medicine, Hematology & Oncology (MD) in Hattiesburg, Mississippi, trained at University of Mississippi School of Medicine (class of 2000). 638 Medicare patients in 2024, $3,353,521 paid; nearly all of their 1,840 Part D prescriptions were generic (91%). Pfizer Inc. was the largest of 29 companies reporting payments in 2025, $1,346 in all, mostly food and beverage.
Overview
| NPI | 1477595643 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Jul 21, 2020 |
| Certified by provider | Jul 21, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 19294 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 638 |
|---|---|
| Services billed | 222,692 across 130 procedure codes |
| Paid by Medicare | $3,353,521 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,840 · 2,598 30-day fills |
|---|---|
| Patients | 302 |
| Total drug cost | $2,431,080 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Hattiesburg Clinic PAHattiesburg, MS · 537 clinicians
Hospital affiliation
- Forrest General HospitalHattiesburg, MS
Other facilities
- Forrest General Home CareHome health agency · Hattiesburg, MS
Industry payments (Open Payments)
- 2025$1,346 · 62 payments from 29 companies
- 2024$1,170 · 54 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $132.22 | 7 |
| Janssen Biotech, Inc. | $122.89 | 4 |
| Novartis Pharmaceuticals Corporation | $97.55 | 5 |
| Abbvie Inc. | $88.95 | 4 |
| Astellas Pharma US Inc | $84.59 | 4 |
What the 2025 payments were for
- Food and Beverage$1,346 · 62 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Hattiesburg
- 1255420220
- 1912437310
- 1669464012
- 1013173590
- 1295399293
- 1144517715
- 1730192907
- 1134238496
- 1669682134
- 1932219649
All Internal Medicine, Hematology & Oncology providers in Mississippi →