Chance Loomis Irwin, MD
NPI 1780888271ActiveIndividual· Surgery, Vascular Surgery· Amarillo, TX
Surgery, Vascular Surgery (MD) in Amarillo, Texas, trained at University of Texas Medical School at Houston (class of 2002). 635 Medicare patients in 2024, $129,783 paid; nearly all of their 362 Part D prescriptions were generic (90%). Endologix LLC was the largest of 11 companies reporting payments in 2025, $759.97 in all, mostly food and beverage.
Overview
| NPI | 1780888271 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 11, 2007 |
| Last updated in NPPES | Sep 20, 2024 |
| Certified by provider | Sep 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | M0440 | TX |
| Surgery | 208600000X | M0440 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 635 |
|---|---|
| Services billed | 1,128 across 131 procedure codes |
| Paid by Medicare | $129,783 |
Part D prescriptions in 2024
| Prescriptions (claims) | 362 · 472 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $27,402 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Vascular Surgery |
Medical group
- Bsa Physicians Group IncAmarillo, TX · 122 clinicians
Hospital affiliations
- Bsa HospitalAmarillo, TX
- Northwest Texas HospitalAmarillo, TX
- Quail Creek Surgical HospitalAmarillo, TX
- Southwest Medical CenterLiberal, KS
Other facilities
- Bsa Compassion Home CareHome health agency · Amarillo, TX
Industry payments (Open Payments)
- 2025$759.97 · 14 payments from 11 companies
- 2024$494.07 · 15 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Endologix LLC | $261.44 | 2 |
| Abbott Laboratories | $111.64 | 1 |
| Penumbra, Inc. | $87.14 | 1 |
| Elucent Medical | $73.64 | 1 |
| Solventum Corporation | $61.89 | 2 |
What the 2025 payments were for
- Food and Beverage$759.97 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery, Vascular Surgery providers in Amarillo
- 1053676049
- 1073510061
- 1447236690
- 1578918520
- 1184088908