Denise Ann-Marie John, M.D.
NPI 1033232319ActiveIndividual· Ophthalmology· Ann Arbor, MI
Ophthalmology (M.D.) with Regents of the University of Michigan, practicing in Ann Arbor, Michigan. Their prescriptions cost Medicare Part D more than their services did: $89,622 for 898 claims, against $46,867 paid for services in 2024. Lists University of Michigan Health System as a hospital affiliation.
Overview
| NPI | 1033232319 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 9, 2007 |
| Last updated in NPPES | Mar 16, 2026 |
| Certified by provider | Mar 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 4301089592 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Ophthalmology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 215 |
|---|---|
| Services billed | 841 across 30 procedure codes |
| Paid by Medicare | $46,867 |
Part D prescriptions in 2024
| Prescriptions (claims) | 898 · 1,854 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $89,622 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Ophthalmology |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliation
- University of Michigan Health SystemAnn Arbor, 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 126 ophthalmologists in Ann Arbor · All ophthalmologists in Michigan