Physician profile
Patrick K O'Callaghan
NPI 1750792446
$3,352.69
in general payments reported to CMS, 2019-2025
11 companies · $596 in 2025
The $596 reported for 2025 was more than what a typical Orthopaedic Surgery provider received nationally (typical 2025 total: $569).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $72.26 · 2020: $392 · 2022: $33.09 · 2023: $532 · 2024: $1,728 · 2025: $596.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Travel and Lodging: $1,955 · Food and Beverage: $900.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Travel and Lodging | $1,955.09 |
| Food and Beverage | $900.25 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Zak Ortho | $1,246.22 | 2024-2025 | |
| Arthrex, INC. | $565.30 | 2024 | |
| Medwest Associates | $436.06 | 2023 | |
| Fortis Surgical, LLC | $392.00 | 2020 | |
| Stryker Corporation | $353.50 | 2022-2025 | Pangea, Gamma, Variax |
| Zimmer Biomet Holdings, INC. | $158.65 | 2025 | Identity, Persona |
| Depuy Synthes Sales INC. | $72.26 | 2019 | |
| Bioventus LLC | $47.15 | 2023-2024 | Durolane, Exogen Ultrasound Bone Healing System, Exogen Ultrasound Bone Healing System |
| Endo Pharmaceuticals INC. | $35.59 | 2023 | Xiaflex |
| Integra Lifesciences Corporation | $28.10 | 2023 | Integra, Primatrix, Integra Dermal Regeneration Template |
| Endo USA, INC. | $17.86 | 2024 | Xiaflex |
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Patrick O'Callaghan listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.