Violet Darrow, APRN-CNS
NPI 1124425046ActiveIndividual· Nurse Practitioner, Acute Care· Tulsa, OK
Nurse Practitioner, Acute Care (APRN-CNS) with Usacs Observation Medicine Services of Oklahoma, LLC, practicing in Tulsa, Oklahoma. 399 Medicare patients in 2024, $74,646 paid; nearly all of their 597 Part D prescriptions were generic (94%). Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $38.82 in payments in 2025, mostly food and beverage. Lists Ascension St John Jane Phillips and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1124425046 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN-CNS |
| Sole proprietor | No |
| NPI issued | Nov 20, 2014 |
| Last updated in NPPES | Jun 6, 2022 |
| Certified by provider | Jun 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | 93309 | OK |
| Clinical Nurse Specialist | 364S00000X | 93309 | 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 | 399 |
|---|---|
| Services billed | 1,075 across 10 procedure codes |
| Paid by Medicare | $74,646 |
Part D prescriptions in 2024
| Prescriptions (claims) | 597 · 617 30-day fills |
|---|---|
| Patients | 213 |
| Total drug cost | $17,511 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Usacs Observation Medicine Services of Oklahoma, LLCTulsa, OK · 210 clinicians
Hospital affiliations
- Ascension St John Jane PhillipsBartlesville, OK
- Ascension St John Medical CenterTulsa, OK
- Coffeyville Regional Medical Center, IncCoffeyville, KS
- Sedan City HospitalSedan, KS
- St John OwassoOwasso, OK
Industry payments (Open Payments)
- 2025$38.82 · 2 payments from 1 company
- 2024$106.25 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $38.82 | 2 |
What the 2025 payments were for
- Food and Beverage$38.82 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 156 acute care nurse practitioners in Tulsa · All acute care nurse practitioners in Oklahoma