Thomas Joseph Desmarais, MD
NPI 1972918639ActiveIndividual· Surgery, Vascular Surgery· Billings, MT
Surgery, Vascular Surgery (MD) in Billings, Montana, trained at Geisel School of Medicine at Dartmouth (class of 2014). 444 Medicare patients in 2024, $121,157 paid; nearly all of their 240 Part D prescriptions were generic (90%). W. L. Gore & Associates, Inc. was the largest of 7 companies reporting payments in 2025, $689.19 in all, mostly food and beverage.
Overview
| NPI | 1972918639 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2014 |
| Last updated in NPPES | Jun 24, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | MED-PHYS-LIC-76907 | MT |
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 - Vascular Surgery (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 444 |
|---|---|
| Services billed | 933 across 105 procedure codes |
| Paid by Medicare | $121,157 |
Part D prescriptions in 2024
| Prescriptions (claims) | 240 · 421 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $23,040 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Geisel School of Medicine at Dartmouth |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical group
- Scl Health Medical Group - Billings LLCBillings, MT · 297 clinicians
Hospital affiliations
- Bozeman Health Deaconess HospitalBozeman, MT
- Intermountain Health St Vincent Regional HospitalBillings, MT
- Sheridan Memorial HospitalSheridan, WY
- Sidney Health CenterSidney, MT
- St James HospitalButte, MT
Industry payments (Open Payments)
- 2025$689.19 · 15 payments from 7 companies
- 2024$1,003 · 13 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| W. L. Gore & Associates, Inc. | $366.60 | 8 |
| Abbott Laboratories | $178.57 | 1 |
| Abiomed | $42.01 | 2 |
| Medtronic, Inc. | $32.30 | 1 |
| Penumbra, Inc. | $29.38 | 1 |
What the 2025 payments were for
- Food and Beverage$689.19 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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