J9144 is the HCPCS code for: Injection, daratumumab, 10 mg and hyaluronidase-fihj. In 2024, 765 providers billed J9144 8,288,764 times, with an estimated $323.0M paid by Medicare.
J9144 is a Part B drug code: Medicare pays an ASP-based rate of $57.05 per 10 mg (2026 Q3 ASP drug pricing file). Total payment per patient depends on the dose billed.
A billed "service" on this code is one 10 mg unit, not one patient visit — that's why the service counts below run high.
What Medicare actually paid per service in 2024, on average: $38.97 (observed payment across all settings and modifiers — not a fee-schedule rate).
The top 5 billers nationally, ranked by 2024 Medicare service volume.
| # | Provider | Specialty | Location | Services | Est. Medicare paid |
|---|---|---|---|---|---|
| 1 | Stefano Tarantolo, M.D. | Medical Oncology | Omaha, NE | 54,900 | $2.1M |
| 2 | Anuj Mahindra, MD | Hematology-Oncology | La Jolla, CA | 49,680 | $1.9M |
| 3 | Ruben Niesvizky, MD | Medical Oncology | New York, NY | 48,240 | $1.9M |
| 4 | William Sharfman, M.D. | Medical Oncology | Lutherville, MD | 45,540 | $1.8M |
| 5 | Robert Vescio, M.D. | Hematology-Oncology | Los Angeles, CA | 41,220 | $1.6M |
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