William Vaughn, NP
NPI 1558809434ActiveIndividual· Nurse Practitioner, Family· Tulsa, OK
Nurse Practitioner, Family (NP) with Warren Clinic Inc and 1 other group, practicing in Tulsa, Oklahoma. 223 Medicare patients in 2024, $25,142 paid; nearly all of their 160 Part D prescriptions were generic (98%). Si-Bone, Inc. was the largest of 2 companies reporting payments in 2025, $350.73 in all, mostly food and beverage.
Overview
| NPI | 1558809434 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Feb 10, 2017 |
| Last updated in NPPES | Apr 11, 2022 |
| Certified by provider | Apr 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 95057 | OK |
| Nurse Practitioner | 363L00000X | 95057 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 223 |
|---|---|
| Services billed | 495 across 55 procedure codes |
| Paid by Medicare | $25,142 |
Part D prescriptions in 2024
| Prescriptions (claims) | 160 · 165 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $1,563 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Warren Clinic IncTulsa, OK · 883 clinicians
- Medwise LLCOwasso, OK · 31 clinicians
Industry payments (Open Payments)
- 2025$350.73 · 4 payments from 2 companies
- 2024$1,166 · 14 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Si-Bone, Inc. | $182.11 | 3 |
| Medtronic, Inc. | $168.62 | 1 |
What the 2025 payments were for
- Food and Beverage$350.73 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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