Preston Thomas Whitmill
NPI 1326712183ActiveIndividual· Physician Assistant· Tulsa, OK
Physician Assistant with Ies ER Oklahoma LLC and 2 other groups, practicing in Tulsa, Oklahoma. 52 Medicare patients in 2024, $4,869 paid; nearly all of their 68 Part D prescriptions were generic (97%). Lists Ascension St John Jane Phillips and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1326712183 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Aug 5, 2021 |
| Last updated in NPPES | Mar 20, 2026 |
| Certified by provider | Mar 20, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 5200 | 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 | 52 |
|---|---|
| Services billed | 61 across 17 procedure codes |
| Paid by Medicare | $4,869 |
Part D prescriptions in 2024
| Prescriptions (claims) | 68 · 75 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $668.24 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Ies ER Oklahoma LLCMuskogee, OK · 143 clinicians
- South Central Emergency Services, PCMiami, OK · 55 clinicians
- Emergency Medicine Physicians of Tulsa County LLCOwasso, OK · 18 clinicians
Hospital affiliations
- Ascension St John Jane PhillipsBartlesville, OK
- Ascension St John Medical CenterTulsa, OK
- St John OwassoOwasso, OK
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 396 physician assistants in Tulsa · All physician assistants in Oklahoma