Mark A. Greiner, M.D.
NPI 1194992958ActiveIndividual· Ophthalmology· Iowa City, IA
Ophthalmology (M.D.) in Iowa City, Iowa, trained at University of California, Davis School of Medicine (class of 2007). In 2024 Medicare paid $165,727 for 604 patients, and Part D covered 1,309 of their prescriptions, 52% of them generic.
Overview
| NPI | 1194992958 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 12, 2008 |
| Last updated in NPPES | Aug 16, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 40489 | IA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 604 |
|---|---|
| Services billed | 2,175 across 52 procedure codes |
| Paid by Medicare | $165,727 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,309 · 2,149 30-day fills |
|---|---|
| Patients | 356 |
| Total drug cost | $83,641 |
| Generic share | 52% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Ophthalmology |
Medical group
- State University of IowaCoralville, IA · 1,897 clinicians
Hospital affiliations
- St Lukes HospitalCedar Rapids, IA
- University of Iowa Hospital & ClinicsIowa City, IA
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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