Douglas John Zakolski, D.O.
NPI 1659356400ActiveIndividual· Internal Medicine· Southgate, MI
Internal Medicine (D.O.) in Southgate, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $997,915 for 11,750 claims, against $26,608 paid for services in 2024. Novo Nordisk Inc reported $15.56 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1659356400 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Oct 22, 2020 |
| Certified by provider | Oct 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 5101012105 | 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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 164 |
|---|---|
| Services billed | 1,146 across 37 procedure codes |
| Paid by Medicare | $26,608 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,750 · 23,571 30-day fills |
|---|---|
| Patients | 496 |
| Total drug cost | $997,915 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
Medical group
- Oakwood Ambulatory LLCWestland, MI · 274 clinicians
Hospital affiliations
- Beaumont Hospital - DearbornDearborn, MI
- Beaumont Hospital - TaylorTaylor, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Corewell Health Trenton HospitalTrenton, MI
- Corewell Health Wayne HospitalWayne, MI
Other facilities
- Beaumont Home HealthHome health agency · Troy, MI
- Henry Ford Home Health CareHome health agency · Detroit, MI
Industry payments (Open Payments)
- 2025$15.56 · 1 payment from 1 company
- 2024$125.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $15.56 | 1 |
What the 2025 payments were for
- Food and Beverage$15.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 internal medicine physicians in Southgate · All internal medicine physicians in Michigan