Kevin D. Weikart, M.D.
NPI 1902864986ActiveIndividual· Internal Medicine· O Fallon, MO
Internal Medicine (M.D.) in O Fallon, Missouri, licensed in MO, with an NPI issued in May 2006. Their prescriptions cost Medicare Part D more than their services did: $312,131 for 3,720 claims, against $31,178 paid for services in 2024. Vanda Pharmaceuticals Inc. was the largest of 15 companies reporting payments in 2025, $2,878 in all, mostly food and beverage. Lists Ssm Health Depaul Hospital St Louis and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1902864986 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 1, 2006 |
| Last updated in NPPES | Oct 7, 2026 |
| Certified by provider | Oct 7, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MOMDR5G33 | MO |
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 - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 61 |
|---|---|
| Services billed | 286 across 11 procedure codes |
| Paid by Medicare | $31,178 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,720 · 7,325 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $312,131 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Ssm Health Depaul Hospital St LouisBridgeton, MO
- Ssm St Joseph Health CenterSaint Charles, MO
- Ssm St Joseph Hospital WestLake Saint Louis, MO
Other facilities
- Delmar Gardens Home Care IncHome health agency · Chesterfield, MO
- Ssm Health at Home Home Health-St. LouisHome health agency · Saint Louis, MO
- Community Loving Care HospiceHospice · Wentzville, MO
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$2,878 · 52 payments from 15 companies
- 2024$3,123 · 49 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vanda Pharmaceuticals Inc. | $387.64 | 16 |
| Abbvie Inc. | $379.35 | 4 |
| Amgen Inc. | $337.70 | 8 |
| Pfizer Inc. | $270.76 | 6 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $246.52 | 2 |
What the 2025 payments were for
- Food and Beverage$2,831 · 48 payments
- Education$47.48 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 internal medicine physicians in O Fallon · All internal medicine physicians in Missouri