Gregory A. Parker, MD
NPI 1851392575ActiveIndividual· Family Medicine· Columbus, GA
Family Medicine (MD) in Columbus, Georgia, trained at Medical College of Georgia School of Medicine (class of 1987). In 2024 Medicare paid $758,598 for 4,076 patients, and Part D covered 12,463 of their prescriptions, 87% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 20 companies reporting payments in 2025, $1,799 in all, mostly food and beverage.
Overview
| NPI | 1851392575 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 3, 2005 |
| Last updated in NPPES | Feb 15, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 031305 | 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 - Family Practice (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 4,076 |
|---|---|
| Services billed | 59,075 across 113 procedure codes |
| Paid by Medicare | $758,598 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,463 · 26,730 30-day fills |
|---|---|
| Patients | 857 |
| Total drug cost | $920,210 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Medical College of Georgia School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Family Practice |
Medical group
- Horizons Diagnostics, L.L.C.Columbus, GA · 24 clinicians
Hospital affiliations
- Piedmont Columbus Regional MidtownColumbus, GA
- Piedmont Columbus Regional NorthsideColumbus, GA
- St Francis Hospital- Emory HealthcareColumbus, GA
Other facilities
- Amedisys Home Health of MaconHome health agency · Macon, GA
- Centerwell Home HealthHome health agency · Columbus, GA
- Enhabit Home HealthHome health agency · Columbus, GA
- Prohealth Home Health-Georgia, LLCHome health agency · Columbus, GA
Industry payments (Open Payments)
- 2025$1,799 · 114 payments from 20 companies
- 2024$1,837 · 108 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $255.35 | 19 |
| Pfizer Inc. | $198.71 | 13 |
| Ardelyx, Inc. | $190.87 | 9 |
| Abbvie Inc. | $150.33 | 10 |
| Lilly USA, LLC | $145.92 | 8 |
What the 2025 payments were for
- Food and Beverage$1,799 · 114 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 224 family medicine physicians in Columbus · All family medicine physicians in Georgia