Jacob John Baker, MD, PHD
NPI 1093377012ActiveIndividual· Internal Medicine· Grand Rapids, MI
Internal Medicine (MD, PHD) with Advantage Health/Saint Mary's Medical Group, practicing in Grand Rapids, Michigan. Their prescriptions cost Medicare Part D more than their services did: $577,510 for 280 claims, against $4,881 paid for services in 2024. Viiv Healthcare Company reported $101.65 in payments in 2025, mostly food and beverage. Lists Bronson Methodist Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1093377012 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2019 |
| Last updated in NPPES | May 31, 2022 |
| Certified by provider | May 31, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4351045602 | 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 | 28 |
|---|---|
| Services billed | 50 across 10 procedure codes |
| Paid by Medicare | $4,881 |
Part D prescriptions in 2024
| Prescriptions (claims) | 280 · 318 30-day fills |
|---|---|
| Patients | 73 |
| Total drug cost | $577,510 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Advantage Health/Saint Mary's Medical GroupCaledonia, MI · 505 clinicians
Hospital affiliations
- Bronson Methodist HospitalKalamazoo, MI
- Mercy Health Saint Mary'sGrand Rapids, MI
Industry payments (Open Payments)
- 2025$101.65 · 1 payment from 1 company
- 2024$143.77 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $101.65 | 1 |
What the 2025 payments were for
- Food and Beverage$101.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 508 internal medicine physicians in Grand Rapids · All internal medicine physicians in Michigan