Stewart C. Greathouse, M.D.
NPI 1740589621ActiveIndividual· Family Medicine· Lake Charles, LA
Family Medicine (M.D.) with Lake Charles Medical Services Family Practice Associates, LLC, practicing in Lake Charles, Louisiana. Their prescriptions cost Medicare Part D more than their services did: $901,599 for 8,234 claims, against $58,790 paid for services in 2024. Abbvie Inc. was the largest of 29 companies reporting payments in 2025, $1,502 in all, mostly food and beverage. Lists Christus Ochsner Lake Area Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1740589621 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 18, 2011 |
| Last updated in NPPES | Apr 27, 2022 |
| Certified by provider | Apr 27, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | MD.205459 | 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 - Family Practice (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 272 |
|---|---|
| Services billed | 2,619 across 35 procedure codes |
| Paid by Medicare | $58,790 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,234 · 17,682 30-day fills |
|---|---|
| Patients | 407 |
| Total drug cost | $901,599 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Lake Charles Medical Services Family Practice Associates, LLCLake Charles, LA · 23 clinicians
Hospital affiliations
- Christus Ochsner Lake Area HospitalLake Charles, LA
- Christus Ochsner St Patrick HospitalLake Charles, LA
- Lake Charles Memorial HospitalLake Charles, LA
Other facilities
- Elara CaringHome health agency · Jennings, LA
- Southern Home HealthHome health agency · Lake Charles, LA
Industry payments (Open Payments)
- 2025$1,502 · 86 payments from 29 companies
- 2024$1,314 · 83 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $276.99 | 26 |
| Sumitomo Pharma America, Inc. | $119.83 | 5 |
| Novo Nordisk Inc | $118.63 | 6 |
| Astellas Pharma US Inc | $78.74 | 4 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $78.13 | 3 |
What the 2025 payments were for
- Food and Beverage$1,502 · 86 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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