Gary D. Gray, MD
NPI 1497729826ActiveIndividual· Internal Medicine· O Fallon, MO
Internal Medicine (MD) in O Fallon, Missouri, trained at Saint Louis University School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $1,025,421 for 13,351 claims, against $67,117 paid for services in 2024. Novo Nordisk Inc was the largest of 7 companies reporting payments in 2025, $218.05 in all, mostly food and beverage.
Overview
| NPI | 1497729826 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 14, 2006 |
| Last updated in NPPES | Sep 16, 2026 |
| Certified by provider | Sep 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 2001028980 | MO |
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 - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 280 |
|---|---|
| Services billed | 818 across 28 procedure codes |
| Paid by Medicare | $67,117 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,351 · 30,280 30-day fills |
|---|---|
| Patients | 864 |
| Total drug cost | $1,025,421 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
Medical groups
- Aging Well Health Care, LLCSaint Louis, MO · 238 clinicians
- Internal Medicine at Winghaven, LLCO Fallon, MO · 3 clinicians
Hospital affiliations
- Mercy Hospital St LouisSaint Louis, MO
- Ssm St Joseph Hospital WestLake Saint Louis, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Aw Health CareHome health agency · Saint Louis, MO
- Elara CaringHome health agency · Bridgeton, MO
- St Luke's Home Health ServicesHome health agency · Chesterfield, MO
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$218.05 · 12 payments from 7 companies
- 2024$38.48 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $59.14 | 3 |
| Pfizer Inc. | $50.67 | 3 |
| Amgen Inc. | $39.46 | 2 |
| Lilly USA, LLC | $21.26 | 1 |
| Globus Medical, Inc. | $17.44 | 1 |
What the 2025 payments were for
- Food and Beverage$218.05 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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