Michael John Essenmacher, DO
NPI 1457845075ActiveIndividual· Hospitalist· Grand Rapids, MI
Hospitalist (DO) in Grand Rapids, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 2018). Mostly services rather than prescriptions: Medicare paid $32,876 for 208 patients in 2024, with only 45 Part D claims.
Overview
| NPI | 1457845075 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 18, 2018 |
| Last updated in NPPES | Apr 22, 2022 |
| Certified by provider | Apr 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 5151012747 | MI |
| Internal Medicine | 207R00000X | 5101023957 | MI |
| Internal Medicine | 207R00000X | 5151012747 | 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 | 208 |
|---|---|
| Services billed | 386 across 8 procedure codes |
| Paid by Medicare | $32,876 |
Part D prescriptions in 2024
| Prescriptions (claims) | 45 · 45 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $1,065 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
Medical group
- Advantage Health/Saint Mary's Medical GroupCaledonia, MI · 505 clinicians
Hospital affiliations
- Mercy Health Saint Mary'sGrand Rapids, MI
- Trinity Health Grand Haven HospitalGrand Haven, MI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 hospitalists in Grand Rapids · All hospitalists in Michigan