Quick answers
- Which hospitals does Mark T. Fay work at?
- Medicare's official clinician data lists Mark T. Fay at 1 hospital: Sky Lakes Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark T. Fay see patients?
- Medicare's clinician data lists 1 practice location in Klamath Falls, OR. Call before your visit to confirm the address.
- What is Mark T. Fay's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Mark T. Fay accept Medicare assignment?
- Yes. Medicare's clinician data says Mark T. Fay accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mark T. Fay?
- (541) 884-3148, as listed in official Medicare / NPI Registry data.
- What is Mark T. Fay's NPI number?
- 1972563781. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark T. Fay works
Medicare's Facility Affiliation Data lists Mark T. Fay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sky Lakes Medical CenterKlamath Falls, OR · Acute Care Hospital · CCN 380050
Practice locations
Addresses where Mark T. Fay is enrolled with Medicare (CMS data updated 2026-10-02).
- 2640 Biehn StKlamath Falls, OR 97601 (541) 884‑3148
Group practices
Medicare enrollment lists Mark T. Fay as a member of this group (CMS data updated 2026-10-02).
- Klamath Ophthalmology PC5 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Klamath Falls
Clinicians with the same Medicare primary specialty in Klamath Falls, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972563781 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians