Thomas Gregory Chaisson, MD
NPI 1902895279ActiveIndividual· General Practice· Thibodaux, LA
General Practice (MD) in Thibodaux, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $776,410 for 14,014 claims, against $182,850 paid for services in 2024. Novo Nordisk Inc was the largest of 14 companies reporting payments in 2025, $360.88 in all, mostly food and beverage.
Overview
| NPI | 1902895279 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 19, 2005 |
| Last updated in NPPES | Apr 3, 2025 |
| Certified by provider | Apr 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 09201R | LA |
| Internal Medicine | 207R00000X | MD.09201R | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 816 |
|---|---|
| Services billed | 7,064 across 74 procedure codes |
| Paid by Medicare | $182,850 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,014 · 25,958 30-day fills |
|---|---|
| Patients | 940 |
| Total drug cost | $776,410 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
Medical group
- Thibodaux Internal Medicine Associates,inc.Thibodaux, LA · 2 clinicians
Hospital affiliations
- Ochsner St Anne General HospitalRaceland, LA
- Ochsner St MaryMorgan City, LA
- Terrebonne General Medical Center - ParishHouma, LA
- Thibodaux Regional Medical CenterThibodaux, LA
Other facilities
- Amedisys Home HealthHome health agency · Houma, LA
- Divinity Home Health Services, LLCHome health agency · Thibodaux, LA
- Home Health Ctr of ThibodauxHome health agency · Thibodaux, LA
- Haydel Memorial HospiceHospice · Houma, LA
- Audubon Health and RehabNursing home · Thibodaux, LA
- Legacy Nursing and Rehabilitation of LafourcheNursing home · Thibodaux, LA
- Thibodaux Healthcare and Rehabilitation CenterNursing home · Thibodaux, LA
Industry payments (Open Payments)
- 2025$360.88 · 20 payments from 14 companies
- 2024$593.14 · 33 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $64.50 | 4 |
| Sumitomo Pharma America, Inc. | $49.13 | 3 |
| Abbvie Inc. | $45.82 | 2 |
| Vanda Pharmaceuticals Inc. | $28.33 | 1 |
| Dexcom, Inc. | $24.52 | 1 |
What the 2025 payments were for
- Food and Beverage$360.88 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other General Practice providers in Thibodaux
- 1063950921
- 1073502472
- 1326037730