J1569 is the HCPCS code for: Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg. In 2024, 593 providers billed J1569 2,848,101 times, with an estimated $101.0M paid by Medicare.
J1569 is a Part B drug code: Medicare pays an ASP-based rate of $49.30 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: $35.47 (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 | Igor Cherches, M.D. | Neurology | Houston, TX | 137,060 | $4.9M |
| 2 | Dignity Health | Pharmacy | Santa Maria, CA | 43,190 | $1.5M |
| 3 | Boris Bagdasarian, D.O. | Hematology-Oncology | Glendale, CA | 28,250 | $1.0M |
| 4 | Andrew Gordon, M.D. | Neurology | Lake Barrington, IL | 25,970 | $918K |
| 5 | Stephanie Melton, CNP | Nurse Practitioner | Columbus, OH | 24,500 | $874K |
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