Cay Michael Mierisch, MD
NPI 1083688931ActiveIndividual· Orthopaedic Surgery· Corvallis, OR
Orthopaedic Surgery (MD) with Good Samaritan Hospital Corvallis and 1 other group, practicing in Corvallis, Oregon. Mostly services rather than prescriptions: Medicare paid $117,848 for 258 patients in 2024, with only 38 Part D claims. Arthrex, Inc. was the largest of 5 companies reporting payments in 2025, $2,199 in all, mostly travel and lodging. Lists Good Samaritan Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1083688931 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 16, 2006 |
| Last updated in NPPES | Aug 13, 2021 |
| Certified by provider | Aug 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | MD205645 | OR |
| Orthopaedic Surgery | 207X00000X | 0101-237955 | VA |
| Orthopaedic Surgery, Hand Surgery | 207XS0106X | 0101237955 | VA |
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 - Orthopedic Surgery (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 258 |
|---|---|
| Services billed | 806 across 70 procedure codes |
| Paid by Medicare | $117,848 |
Part D prescriptions in 2024
| Prescriptions (claims) | 38 · 41 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $271.76 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
Medical groups
- Good Samaritan Hospital CorvallisCorvallis, OR · 380 clinicians
- Albany General HospitalAlbany, OR · 198 clinicians
Hospital affiliations
- Good Samaritan Regional Medical CenterCorvallis, OR
- Samaritan Albany General HospitalAlbany, OR
- Samaritan Lebanon Community HospitalLebanon, OR
- Samaritan North Lincoln HospitalLincoln City, OR
- Samaritan Pacific Community HospitalNewport, OR
Industry payments (Open Payments)
- 2025$2,199 · 20 payments from 5 companies
- 2024$675.25 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Arthrex, Inc. | $1,080 | 8 |
| Stryker Corporation | $799.53 | 5 |
| Left Coast Surgical Inc | $165.72 | 3 |
| Skeletal Dynamics Inc | $95.75 | 1 |
| Smith+nephew, Inc. | $58.06 | 3 |
What the 2025 payments were for
- Travel and Lodging$1,430 · 3 payments
- Food and Beverage$768.75 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 39 orthopedic surgeons in Corvallis · All orthopedic surgeons in Oregon