Top billers · Codes · J0129

Who bills J0129?

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 13,105,162 times, with an estimated $440.3M paid by Medicare.

The fee

What does Medicare pay for J0129?

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.

ASP-based payment limit$45.86 per 10 mg

Pricing file2026 Q3 Average Sales Price (ASP)

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 list

Who bills J0129 the most.

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

1,242 more providers billed J0129 in 2024. The full ranked list — filtered to your exact territory, with phone numbers and year-over-year history — is one search in Prospect 811.

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The breakdown

Where J0129 gets billed.

Top states by volume

Florida1,511,159 services

Texas1,306,877 services

North Carolina796,488 services

California774,261 services

Pennsylvania614,838 services

South Carolina574,111 services

Arizona458,965 services

Maryland402,482 services

About this code

CMS descriptionInjection, 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)

Code typeHCPCS Level II

Providers billing it (2024)1,247

Services billed (2024)13,105,162

Avg. Medicare payment per service (2024)$33.60

Where these numbers come from. Rates are CMS's own public fee-schedule files — the Physician Fee Schedule, Clinical Laboratory Fee Schedule, ASP drug pricing, DMEPOS, and the OPPS/ASC addenda — each labeled with its file year on this page; national amounts are shown before geographic adjustment. Codes with no separate rate render the fee schedule's own status in words, never a fake $0. Utilization comes from CMS's public Medicare Provider Utilization & Payment data for 2024, the most recent year released. It covers traditional Medicare fee-for-service only (no commercial insurance, no Medicare Advantage), and CMS suppresses any provider-and-code line with fewer than 11 beneficiaries before publishing, so low-volume billers don't appear at all. "Est. Medicare paid" is each billing line's average Medicare payment times its service count, summed — actual per-claim payment varies by setting and modifiers. For drug and supply codes, a "service" is a billed unit (a milligram, a milliliter, a square centimeter), not a patient visit. Code descriptions are CMS's own, from the utilization files. Prospect 811 organizes public data; it doesn't add to or alter it. Not affiliated with or endorsed by CMS. Full detail on the data page.

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