Hammerlock
Payments companies reported to CMS as associated with Hammerlock. "Associated with" is CMS's wording: it links a payment to a product without saying the money was spent on it.
By year
Payments reported as associated with Hammerlock, per program year, as reported to CMS.
Who makes it
Specialties most often involved
Where the associated payments went, by the receiving clinician's specialty.
Clinicians most associated with Hammerlock
These are the largest totals companies reported as associated with Hammerlock. They are typically speaking or consulting arrangements, which companies must report by law; appearing here is not evidence of anything improper.
| Clinician | Location | Specialty | Associated payments (2023-2025) |
|---|---|---|---|
| Sean Grambart | Des Moines, IA | Foot & Ankle Surgery | $115,469.64 |
| Michael Campbell | Norfolk, VA | Orthopaedic Surgery | $68,418.87 |
| Thomas Chang | Santa Rosa, CA | Foot & Ankle Surgery | $54,848.91 |
| John Ellington | Charlotte, NC | Orthopaedic Surgery | $37,121.65 |
| Johannes Coetzee | Edina, MN | Foot and Ankle Surgery | $35,583.77 |
| Anish Kadakia | Chicago, IL | Orthopaedic Surgery | $34,253.03 |
| Mark Myerson | Baltimore, MD | Orthopaedic Surgery | $34,253.03 |
| Bryan Den Hartog | Stillwater, MN | Orthopaedic Surgery | $34,253.03 |
| Brian Cross | Fort Lauderdale, FL | Orthopaedic Trauma | $9,173.01 |
| Bradley Lamm | West Palm Beach, FL | Foot and Ankle Surgery | $8,222.20 |
Prescribed Hammerlock?
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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.