Gregory Wade Horn, M.D.
NPI 1659371128ActiveIndividual· Obstetrics & Gynecology· Ocean Springs, MS
Obstetrics & Gynecology (M.D.) in Ocean Springs, Mississippi, trained at Louisiana State University School of Medicine in Shreveport (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $45,224 for 819 claims, against $5,851 paid for services in 2024. Vertex Pharmaceuticals Incorporated was the largest of 7 companies reporting payments in 2025, $136.81 in all, mostly food and beverage.
Overview
| NPI | 1659371128 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 27, 2005 |
| Last updated in NPPES | Oct 19, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 15343 | MS |
| Obstetrics & Gynecology | 207V00000X | 021971 | LA |
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 - Obstetrics/Gynecology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 119 across 15 procedure codes |
| Paid by Medicare | $5,851 |
Part D prescriptions in 2024
| Prescriptions (claims) | 819 · 1,457 30-day fills |
|---|---|
| Patients | 152 |
| Total drug cost | $45,224 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in Shreveport |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Mississippi Coast OB/GYN, P.A.Ocean Springs, MS · 4 clinicians
Hospital affiliations
- Singing River GulfportGulfport, MS
- Singing River Health SystemPascagoula, MS
Industry payments (Open Payments)
- 2025$136.81 · 9 payments from 7 companies
- 2024$218.04 · 12 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $33.07 | 2 |
| Organon LLC | $24.30 | 1 |
| Ethicon US, LLC | $23.52 | 1 |
| Sage Therapeutics, LLC | $19.31 | 1 |
| Abbvie Inc. | $15.16 | 1 |
What the 2025 payments were for
- Food and Beverage$136.81 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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