John B. Mack, MD
NPI 1801826151ActiveIndividual· Surgery· Longview, TX
Surgery (MD) in Longview, Texas, trained at Baylor College of Medicine (class of 1987). 355 Medicare patients in 2024, $144,611 paid; nearly all of their 469 Part D prescriptions were generic (98%). Vertex Pharmaceuticals Incorporated was the largest of 5 companies reporting payments in 2025, $213.19 in all, mostly food and beverage.
Overview
| NPI | 1801826151 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 3, 2006 |
| Last updated in NPPES | Jun 13, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | H6396 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 355 |
|---|---|
| Services billed | 831 across 71 procedure codes |
| Paid by Medicare | $144,611 |
Part D prescriptions in 2024
| Prescriptions (claims) | 469 · 469 30-day fills |
|---|---|
| Patients | 218 |
| Total drug cost | $3,153 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Baylor College of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | General Surgery |
Medical group
- Associated Clinicians of East TexasLongview, TX · 108 clinicians
Hospital affiliations
- Christus Good Shepherd Medical CenterLongview, TX
- Longview Regional Medical CenterLongview, TX
Industry payments (Open Payments)
- 2025$213.19 · 10 payments from 5 companies
- 2024$20.72 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $72.98 | 3 |
| Medtronic, Inc. | $71.93 | 4 |
| Solventum Corporation | $28.98 | 1 |
| Hologic Sales and Service, LLC | $19.87 | 1 |
| Elucent Medical | $19.43 | 1 |
What the 2025 payments were for
- Food and Beverage$213.19 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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