William N. Barker Jr., ACNP
NPI 1457501025ActiveIndividual· Nurse Practitioner, Acute Care· Longview, TX
Nurse Practitioner, Acute Care (ACNP) with Christus Trinity Clinic Texas, practicing in Longview, Texas. Their prescriptions cost Medicare Part D more than their services did: $765,679 for 3,558 claims, against $26,499 paid for services in 2024. Zoll Services LLC (A/K/A Zoll Lifecor Corp) was the largest of 3 companies reporting payments in 2025, $313.61 in all, mostly food and beverage. Lists Christus Good Shepherd Medical Center as a hospital affiliation.
Overview
| NPI | 1457501025 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ACNP |
| Sole proprietor | No |
| NPI issued | Sep 19, 2008 |
| Last updated in NPPES | Oct 23, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | AP117340 | 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 - Nurse Practitioner (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 242 |
|---|---|
| Services billed | 628 across 9 procedure codes |
| Paid by Medicare | $26,499 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,558 · 7,095 30-day fills |
|---|---|
| Patients | 538 |
| Total drug cost | $765,679 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Christus Trinity Clinic TexasTyler, TX · 1,540 clinicians
Hospital affiliation
- Christus Good Shepherd Medical CenterLongview, TX
Industry payments (Open Payments)
- 2025$313.61 · 7 payments from 3 companies
- 2024$291.82 · 12 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $120.35 | 4 |
| Abbott Laboratories | $101.90 | 1 |
| Novartis Pharmaceuticals Corporation | $91.36 | 2 |
What the 2025 payments were for
- Food and Beverage$313.61 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Nurse Practitioner, Acute Care providers in Longview
- 1184439408
- 1558870360
- 1356156657
- 1548632516
- 1306340690
- 1265279434
- 1326655655
- 1184138901
- 1164004024
- 1194353730
- 1467152074
- 1336941012