Charles Earl Ahrens, M.D.
NPI 1356540827ActiveIndividual· Ophthalmology· Duluth, MN
Ophthalmology (M.D.) in Duluth, Minnesota, trained at Sanford School of Medicine of University of South Dakota (class of 2007). In 2024 Medicare paid $243,547 for 486 patients, and Part D covered 1,219 of their prescriptions, 68% of them generic. Oyster Point Pharma, Inc. reported $15.19 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1356540827 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 16, 2007 |
| Last updated in NPPES | Dec 4, 2020 |
| Certified by provider | Dec 4, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 53850 | MN |
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 (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 486 |
|---|---|
| Services billed | 4,478 across 44 procedure codes |
| Paid by Medicare | $243,547 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,219 · 2,139 30-day fills |
|---|---|
| Patients | 369 |
| Total drug cost | $134,786 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | Sanford School of Medicine of University of South Dakota |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Ophthalmology |
Medical group
- St. Luke's Hospital of DuluthDuluth, MN · 405 clinicians
Hospital affiliation
- St Lukes HospitalDuluth, MN
Industry payments (Open Payments)
- 2024$15.19 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Oyster Point Pharma, Inc. | $15.19 | 1 |
What the 2024 payments were for
- Food and Beverage$15.19 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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