William Allard Estep, DO
NPI 1346818143ActiveIndividual· Internal Medicine· Joplin, MO
Internal Medicine (DO) with Freeman-Oak Hill Health System, practicing in Joplin, Missouri. Part D covered 487 prescriptions written in 2024, 79% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 11 companies reporting payments in 2025, $205.31 in all, mostly food and beverage. Lists Freeman Health System - Freeman West and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1346818143 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Jun 16, 2021 |
| Last updated in NPPES | Jul 8, 2025 |
| Certified by provider | Jul 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20250276340 | MO |
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 - Internal Medicine (MO) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 487 · 809 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $48,703 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Freeman-Oak Hill Health SystemJoplin, MO · 394 clinicians
Hospital affiliations
- Freeman Health System - Freeman WestJoplin, MO
- Freeman Neosho HospitalNeosho, MO
- Mercy Hospital JoplinJoplin, MO
Other facilities
- Amedisys Home Health of MissouriHome health agency · Joplin, MO
- Angels Care Home HealthHome health agency · Chanute, KS
Industry payments (Open Payments)
- 2025$205.31 · 12 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $32.14 | 2 |
| Otsuka America Pharmaceutical, Inc. | $20.27 | 1 |
| Abbott Laboratories | $19.12 | 1 |
| Pfizer Inc. | $18.72 | 1 |
| Lilly USA, LLC | $18.21 | 1 |
What the 2025 payments were for
- Food and Beverage$205.31 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 65 internal medicine physicians in Joplin · All internal medicine physicians in Missouri