Shannon Whitney Clark, PHYSICIAN ASSISTANT
NPI 1811569270ActiveIndividual· Physician Assistant· Enid, OK
Physician Assistant (PHYSICIAN ASSISTANT) with Oliver Street 5.01(A) Inc, practicing in Enid, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $293,614 for 823 claims, against $163,363 paid for services in 2024. Ucb, Inc. was the largest of 10 companies reporting payments in 2025, $329.76 in all, mostly food and beverage. Lists St Mary's Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1811569270 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PHYSICIAN ASSISTANT |
| Sole proprietor | No |
| NPI issued | Jul 14, 2021 |
| Last updated in NPPES | Sep 22, 2026 |
| Certified by provider | Sep 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 4606 | OK |
| Physician Assistant, Medical | 363AM0700X | 4606 | 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 - Physician Assistant (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 741 |
|---|---|
| Services billed | 5,221 across 53 procedure codes |
| Paid by Medicare | $163,363 |
Part D prescriptions in 2024
| Prescriptions (claims) | 823 · 888 30-day fills |
|---|---|
| Patients | 329 |
| Total drug cost | $293,614 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Oliver Street 5.01(A) IncCedar Park, TX · 168 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$329.76 · 21 payments from 10 companies
- 2024$555.63 · 30 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $140.08 | 8 |
| Abbvie Inc. | $36.10 | 2 |
| Sun Pharmaceutical Industries Inc. | $34.07 | 2 |
| Janssen Biotech, Inc. | $25.40 | 1 |
| E.R. Squibb & Sons, L.L.C. | $19.40 | 1 |
What the 2025 payments were for
- Food and Beverage$329.76 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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