Marcus K. Weldon, MD
NPI 1942689286ActiveIndividual· Internal Medicine, Hematology & Oncology· Macon, GA
Internal Medicine, Hematology & Oncology (MD) in Macon, Georgia, trained at Mercer University School of Medicine (class of 2015). In 2024 Medicare paid $5,222,431 for 1,485 patients, and Part D covered 1,435 of their prescriptions, 83% of them generic. Pfizer Inc. was the largest of 40 companies reporting payments in 2025, $2,216 in all, mostly food and beverage.
Overview
| NPI | 1942689286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 19, 2015 |
| Last updated in NPPES | Apr 26, 2021 |
| Certified by provider | Apr 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 76847 | GA |
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 - Hematology/Oncology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,485 |
|---|---|
| Services billed | 279,594 across 194 procedure codes |
| Paid by Medicare | $5,222,431 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,435 · 1,921 30-day fills |
|---|---|
| Patients | 392 |
| Total drug cost | $2,343,826 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Mercer University School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Hematology/Oncology |
Medical group
- American Oncology Partners PAFort Wayne, IN · 391 clinicians
Hospital affiliations
- Atrium Health Navicent the Medical CenterMacon, GA
- Coliseum Medical Centers, LLC, DBAMacon, GA
- Emory Houston Hospital Warner RobinsWarner Robins, GA
- Piedmont Macon North HospitalMacon, GA
- Upson Regional Medical CenterThomaston, GA
Other facilities
- Enhabit Home HealthHome health agency · Macon, GA
Industry payments (Open Payments)
- 2025$2,216 · 90 payments from 40 companies
- 2024$3,124 · 124 payments from 39 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $164.87 | 9 |
| Exelixis Inc. | $149.30 | 4 |
| Beone Medicines USA, Inc. | $134.26 | 6 |
| Astellas Pharma US Inc | $112.28 | 5 |
| Bayer Healthcare Pharmaceuticals Inc. | $105.75 | 4 |
What the 2025 payments were for
- Food and Beverage$2,030 · 87 payments
- Education$186.03 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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