Michael Hemphill, MD
NPI 1255691960ActiveIndividual· Internal Medicine, Pulmonary Disease· Duncan, OK
Internal Medicine, Pulmonary Disease (MD) in Duncan, Oklahoma, trained at University of Oklahoma College of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $2,538,299 for 5,904 claims, against $69,637 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 10 companies reporting payments in 2025, $446.70 in all, mostly food and beverage.
Overview
| NPI | 1255691960 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 29, 2012 |
| Last updated in NPPES | Mar 20, 2023 |
| Certified by provider | Mar 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 29191 | OK |
| Internal Medicine | 207R00000X | 29191 | OK |
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 - Pulmonary Disease (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 490 |
|---|---|
| Services billed | 1,540 across 26 procedure codes |
| Paid by Medicare | $69,637 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,904 · 7,175 30-day fills |
|---|---|
| Patients | 697 |
| Total drug cost | $2,538,299 |
| Generic share | 46% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Pulmonary Disease |
Medical group
- Duncan Regional Hospital, IncMarlow, OK · 68 clinicians
Hospital affiliations
- Duncan Regional Hospital, IncDuncan, OK
- Grady Memorial HospitalChickasha, OK
- Jackson County Memorial Hospital AuthorityAltus, OK
- Memorial HealthLawton, OK
- Mercy Hospital Ardmore, IncArdmore, OK
Industry payments (Open Payments)
- 2025$446.70 · 34 payments from 10 companies
- 2024$581.99 · 29 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $145.67 | 14 |
| Inogen, Inc. | $79.40 | 5 |
| Astrazeneca Pharmaceuticals LP | $53.86 | 3 |
| Verona Pharma, Inc. | $46.72 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $35.97 | 2 |
What the 2025 payments were for
- Food and Beverage$446.70 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records