Derek Conner Westman, DO
NPI 1982283065ActiveIndividual· Internal Medicine· Saint Joseph, MI
Internal Medicine (DO) with Lakeland Medical Practices, practicing in Saint Joseph, Michigan. Their prescriptions cost Medicare Part D more than their services did: $48,948 for 333 claims, against $15,831 paid for services in 2024. Astrazeneca Pharmaceuticals LP reported $130.23 in payments in 2024, mostly food and beverage. Lists Lakeland Hospital, St Joseph as a hospital affiliation.
Overview
| NPI | 1982283065 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 6, 2021 |
| Last updated in NPPES | Aug 2, 2024 |
| Certified by provider | Aug 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 5101027971 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 249 across 10 procedure codes |
| Paid by Medicare | $15,831 |
Part D prescriptions in 2024
| Prescriptions (claims) | 333 · 630 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $48,948 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Lakeland Medical PracticesSaint Joseph, MI · 281 clinicians
Hospital affiliation
- Lakeland Hospital, St JosephSt Joseph, MI
Industry payments (Open Payments)
- 2024$130.23 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $130.23 | 1 |
What the 2024 payments were for
- Food and Beverage$130.23 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 internal medicine physicians in Saint Joseph · All internal medicine physicians in Michigan