Top billers · Codes · J2357

Who bills J2357?

J2357 is the HCPCS code for: Injection, omalizumab, 5 mg. In 2024, 617 providers billed J2357 3,851,801 times, with an estimated $113.4M paid by Medicare.

$46.59
per 5 mg (2026 ASP file)
617
Providers billing it (2024)
3,851,801
Services billed
$113.4M
Est. Medicare paid
The fee

What does Medicare pay for J2357?

J2357 is a Part B drug code: Medicare pays an ASP-based rate of $46.59 per 5 mg (2026 Q3 ASP drug pricing file). Total payment per patient depends on the dose billed.

ASP-based payment limit$46.59 per 5 mg
Pricing file2026 Q3 Average Sales Price (ASP)

A billed "service" on this code is one 5 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: $29.45 (observed payment across all settings and modifiers — not a fee-schedule rate).

The list

Who bills J2357 the most.

The top 5 billers nationally, ranked by 2024 Medicare service volume.

#ProviderSpecialtyLocationServicesEst. Medicare paid
1Angela Ahuja, MDAllergy/ ImmunologyChelmsford, MA44,910$1.3M
2Asif Rafi, M.D.Allergy/ ImmunologyLos Angeles, CA43,410$1.3M
3Robert Brennan, MDInfectious DiseaseLynchburg, VA43,350$1.3M
4Matthew Mardiney, M.D.Allergy/ ImmunologyBel Air, MD37,727$1.1M
5David Amran, M.D.Allergy/ ImmunologySugar Land, TX36,165$1.1M

612 more providers billed J2357 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 J2357 gets billed.

Top states by volume

Florida437,987 services
Texas350,457 services
California330,356 services
Virginia312,979 services
Arizona271,308 services
South Carolina210,875 services
Pennsylvania208,396 services
Tennessee191,946 services

About this code

CMS descriptionInjection, omalizumab, 5 mg
Code typeHCPCS Level II
Providers billing it (2024)617
Services billed (2024)3,851,801
Avg. Medicare payment per service (2024)$29.45
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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