Christopher J. Robertz, MD
NPI 1205451648ActiveIndividual· Family Medicine· Saginaw, MI
Family Medicine (MD) with Great Lakes Bay Health Centers, practicing in Saginaw, Michigan. Their prescriptions cost Medicare Part D more than their services did: $495,874 for 2,783 claims, against $566.82 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 2 companies reporting payments in 2025, $66.32 in all, mostly food and beverage. Lists Memorial Healthcare as a hospital affiliation.
Overview
| NPI | 1205451648 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 11, 2020 |
| Last updated in NPPES | Jun 11, 2020 |
| Certified by provider | Jun 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 4351046173 | 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 | 35 |
|---|---|
| Services billed | 63 across 7 procedure codes |
| Paid by Medicare | $566.82 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,783 · 5,416 30-day fills |
|---|---|
| Patients | 261 |
| Total drug cost | $495,874 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Great Lakes Bay Health CentersBay City, MI · 86 clinicians
Hospital affiliation
- Memorial HealthcareOwosso, MI
Industry payments (Open Payments)
- 2025$66.32 · 3 payments from 2 companies
- 2024$16.50 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $49.82 | 2 |
| Amgen Inc. | $16.50 | 1 |
What the 2025 payments were for
- Food and Beverage$66.32 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 248 family medicine physicians in Saginaw · All family medicine physicians in Michigan