Mark Terrence Fay, M.D.
NPI 1972563781ActiveIndividual· Ophthalmology· Klamath Falls, OR
Ophthalmology (M.D.) in Klamath Falls, Oregon, trained at University of Washington School of Medicine (class of 1976). In 2024 Medicare paid $698,555 for 1,103 patients, and Part D covered 1,866 of their prescriptions, 68% of them generic. Alcon Vision LLC was the largest of 2 companies reporting payments in 2025, $66.04 in all, mostly food and beverage.
Overview
| NPI | 1972563781 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 24, 2006 |
| Last updated in NPPES | Feb 11, 2021 |
| Certified by provider | Feb 11, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | MD16253 | OR |
| Ophthalmology | 207W00000X | G58765 | CA |
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 (CA); Practitioner - Ophthalmology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,103 |
|---|---|
| Services billed | 6,295 across 47 procedure codes |
| Paid by Medicare | $698,555 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,866 · 2,745 30-day fills |
|---|---|
| Patients | 317 |
| Total drug cost | $92,817 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Ophthalmology |
Medical group
- Klamath Ophthalmology PCKlamath Falls, OR · 5 clinicians
Hospital affiliation
- Sky Lakes Medical CenterKlamath Falls, OR
Industry payments (Open Payments)
- 2025$66.04 · 3 payments from 2 companies
- 2024$16.10 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $42.26 | 2 |
| Astellas Pharma US Inc | $23.78 | 1 |
What the 2025 payments were for
- Food and Beverage$66.04 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Klamath Falls
- 1285668954
- 1730148271
- 1962745414
- 1336201235
- 1962456335
- 1245592625
- 1568526952
- 1306055413