J1568 is the HCPCS code for: Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg. In 2024, 447 providers billed J1568 1,950,771 times, with an estimated $71.0M paid by Medicare.
J1568 is a Part B drug code: Medicare pays an ASP-based rate of $47.06 per 500 mg (2026 Q3 ASP drug pricing file). Total payment per patient depends on the dose billed.
A billed "service" on this code is one 500 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: $36.39 (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 | Luigi Bertoli, MD | Hematology-Oncology | Birmingham, AL | 74,870 | $2.7M |
| 2 | Manish Viradia, MD | Neurology | Annandale, NJ | 67,280 | $2.4M |
| 3 | Guangzhi Qu, M.D. | Hematology-Oncology | Jackson, MS | 32,830 | $1.2M |
| 4 | James Barton, M.D. | Hematology-Oncology | Birmingham, AL | 31,660 | $1.1M |
| 5 | Nathaniel Whaley, MD | Neurology | Johnson City, TN | 23,900 | $885K |
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