Sianna Elizabeth Bates, APRN-CNP
NPI 1881324523ActiveIndividual· Nurse Practitioner, Primary Care· Broken Arrow, OK
Nurse Practitioner, Primary Care (APRN-CNP) with Warren Clinic Inc, practicing in Broken Arrow, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $10,764 for 194 claims, against $4,362 paid for services in 2024. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $188.05 in all, mostly food and beverage. Lists Saint Francis Hospital South, LLC and 1 other hospital as hospital affiliations.
Overview
| NPI | 1881324523 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN-CNP |
| Sole proprietor | Yes |
| NPI issued | Jun 15, 2022 |
| Last updated in NPPES | Aug 12, 2025 |
| Certified by provider | Aug 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Primary Care Primary | 363LP2300X | 208132 | OK |
| Nurse Practitioner, Family | 363LF0000X | 208132 | OK |
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 - Nurse Practitioner (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 15 |
|---|---|
| Services billed | 77 across 15 procedure codes |
| Paid by Medicare | $4,362 |
Part D prescriptions in 2024
| Prescriptions (claims) | 194 · 381 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $10,764 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Warren Clinic IncTulsa, OK · 883 clinicians
Hospital affiliations
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$188.05 · 11 payments from 5 companies
- 2024$298.96 · 11 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $67.91 | 4 |
| Exact Sciences Corporation | $62.95 | 4 |
| Pfizer Inc. | $24.30 | 1 |
| Novo Nordisk Inc | $17.05 | 1 |
| Astrazeneca Pharmaceuticals LP | $15.84 | 1 |
What the 2025 payments were for
- Food and Beverage$188.05 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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