Lionel Guillaume, M.D.
NPI 1619946001ActiveIndividual· Specialist· Bossier City, LA
Specialist (M.D.) with Northeast Delta Human Services Authority, practicing in Bossier City, Louisiana. Their prescriptions cost Medicare Part D more than their services did: $986,088 for 3,785 claims, against $34,798 paid for services in 2024. Teva Pharmaceuticals USA, Inc. was the largest of 4 companies reporting payments in 2025, $216.18 in all, mostly food and beverage. Lists Bienville Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1619946001 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 16, 2006 |
| Last updated in NPPES | Sep 17, 2021 |
| Certified by provider | Sep 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 017032 | LA |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | 017032 | 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 - Psychiatry (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 115 |
|---|---|
| Services billed | 604 across 5 procedure codes |
| Paid by Medicare | $34,798 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,785 · 4,861 30-day fills |
|---|---|
| Patients | 261 |
| Total drug cost | $986,088 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1978 |
|---|---|
| Medicare specialty | Psychiatry |
| Secondary specialties | Addiction Medicine |
| Telehealth | Offers telehealth |
Medical group
- Northeast Delta Human Services AuthorityRuston, LA · 19 clinicians
Hospital affiliations
- Bienville Medical CenterArcadia, LA
- Willis Knighton Medical CenterShreveport, LA
Industry payments (Open Payments)
- 2025$216.18 · 7 payments from 4 companies
- 2024$70.17 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Teva Pharmaceuticals USA, Inc. | $99.00 | 1 |
| Janssen Pharmaceuticals, Inc | $57.96 | 3 |
| Neurocrine Biosciences, Inc. | $37.53 | 2 |
| E.R. Squibb & Sons, L.L.C. | $21.69 | 1 |
What the 2025 payments were for
- Food and Beverage$117.18 · 6 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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