J0129 is the HCPCS code for: Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered). In 2024, 1,247 providers billed J0129 13.1M times, an estimated $440.3M paid by Medicare.
J0129 is a Part B drug code: Medicare pays an ASP-based rate of $45.86 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: $33.60 (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 | Richard Houk, M.D. | Rheumatology | Little Rock, AR | 76,369 | $2.6M |
| 2 | Aymen Kenawy, M.D. | Rheumatology | Lynn Haven, FL | 65,496 | $2.2M |
| 3 | Nehal Gandhi, MD | Rheumatology | Glen Mills, PA | 64,525 | $2.2M |
| 4 | Grace Makhlouf, M.D. | Rheumatology | Sugar Land, TX | 60,450 | $2.0M |
| 5 | Kevin Kempf, MD | Rheumatology | San Antonio, TX | 55,925 | $1.9M |
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