Elizabeth Irvin Oquinn, NP
NPI 1770366320ActiveIndividual· Nurse Practitioner· North Charleston, SC
Nurse Practitioner (NP) with Charleston Nephrology Associates, LLC, practicing in North Charleston, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $322,379 for 607 claims, against $49,989 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 15 companies reporting payments in 2025, $1,494 in all, mostly food and beverage. Lists Bon Secours-St Francis Xavier Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1770366320 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Aug 17, 2023 |
| Last updated in NPPES | Aug 17, 2023 |
| Certified by provider | Aug 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 27408 | SC |
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 (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 318 |
|---|---|
| Services billed | 1,471 across 18 procedure codes |
| Paid by Medicare | $49,989 |
Part D prescriptions in 2024
| Prescriptions (claims) | 607 · 1,413 30-day fills |
|---|---|
| Patients | 188 |
| Total drug cost | $322,379 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Charleston Nephrology Associates, LLCNorth Charleston, SC · 20 clinicians
Hospital affiliations
- Bon Secours-St Francis Xavier HospitalCharleston, SC
- Roper HospitalCharleston, SC
- Roper St Francis Hospital-Berkeley IncSummerville, SC
- Trident Medical CenterCharleston, SC
Industry payments (Open Payments)
- 2025$1,494 · 50 payments from 15 companies
- 2024$491.36 · 23 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $284.83 | 6 |
| Medtronic, Inc. | $165.43 | 1 |
| Travere Therapeutics, Inc. | $129.54 | 6 |
| Mallinckrodt Hospital Products Inc. | $118.38 | 6 |
| Cormedix Inc. | $104.20 | 1 |
What the 2025 payments were for
- Food and Beverage$1,494 · 50 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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