J2350 is the HCPCS code for: Injection, ocrelizumab, 1 mg. In 2024, 96 providers billed J2350 1,718,391 times, with an estimated $74.7M paid by Medicare.
J2350 is a Part B drug code: Medicare pays an ASP-based rate of $60.97 per 1 mg (2026 Q3 ASP drug pricing file). Total payment per patient depends on the dose billed.
A billed "service" on this code is one 1 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: $43.46 (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 | Armistead Williams, M.D. | Nephrology | New York, NY | 91,500 | $4.2M |
| 2 | James Simsarian, M.D. | Neurology | Fairfax, VA | 84,000 | $3.7M |
| 3 | Daniel Becker, MD | Neurology | Lutherville, MD | 78,300 | $3.5M |
| 4 | Martin Belkin, D.O. | Neurology | Farmington Hills, MI | 55,500 | $2.4M |
| 5 | Mark Cascione, M.D. | Neurology | Tampa, FL | 39,600 | $1.8M |
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