J3145 is the HCPCS code for: Injection, testosterone undecanoate, 1 mg. In 2024, 92 providers billed J3145 5,322,778 times, with an estimated $7.9M paid by Medicare.
J3145 is a Part B drug code: Medicare pays an ASP-based rate of $2.15 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: $1.48 (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 | Thomas Suits, M.D. PA | Urology | Stuart, FL | 349,506 | $521K |
| 2 | Eric Mitchnick, MD | Urology | Port Jefferson Station, NY | 323,250 | $479K |
| 3 | Tung-Chin Hsieh, M.D. | Urology | San Diego, CA | 298,500 | $442K |
| 4 | Gerard Henry, M.D. | Urology | Bossier City, LA | 242,250 | $361K |
| 5 | Chih-Hsin Wen, MD | Urology | Oakland, CA | 204,750 | $305K |
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