David Wittgens, M.D.
NPI 1801025432ActiveIndividual· Family Medicine· Imlay City, MI
Family Medicine (M.D.) with Great Lakes Bay Health Centers, practicing in Imlay City, Michigan. Their prescriptions cost Medicare Part D more than their services did: $381,108 for 2,001 claims, against $470.70 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $124.89 in all, mostly food and beverage. Lists McLaren Lapeer Region as a hospital affiliation.
Overview
| NPI | 1801025432 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 2, 2009 |
| Last updated in NPPES | Jun 9, 2023 |
| Certified by provider | Jun 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 4301094800 | MI |
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 - Family Practice (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 26 |
|---|---|
| Services billed | 66 across 8 procedure codes |
| Paid by Medicare | $470.70 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,001 · 3,869 30-day fills |
|---|---|
| Patients | 133 |
| Total drug cost | $381,108 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Great Lakes Bay Health CentersBay City, MI · 86 clinicians
Hospital affiliation
- McLaren Lapeer RegionLapeer, MI
Industry payments (Open Payments)
- 2025$124.89 · 7 payments from 5 companies
- 2024$96.83 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $50.57 | 3 |
| Pfizer Inc. | $21.91 | 1 |
| Glaxosmithkline, LLC. | $19.90 | 1 |
| Supernus Pharmaceuticals, Inc. | $18.16 | 1 |
| Exact Sciences Corporation | $14.35 | 1 |
What the 2025 payments were for
- Food and Beverage$124.89 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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