Who bills the most Test for allergy using allergenic extract (95004) to Medicare in Illinois?

44 physician groups billed Test for allergy using allergenic extract (95004) to Medicare fee-for-service in Illinois in 2024; the top five named groups hold 34% of that volume, and independent (non-hospital-affiliated) groups deliver 2%.

95004 — Test for allergy using allergenic extract · Source: CMS Medicare Physician & Other Practitioners PUF (Part B), CY2024 release. Medicare fee-for-service only.

Snapshot covers the whole Illinois market — the table below shows the top 100 groups (free tier).

*Share of Illinois's disclosed Medicare-FFS services for 95004, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing 95004 in Illinois — including groups registered elsewhere ("City" is each group's registered location). Group figures sum clinicians affiliated with exactly one group; clinicians in several groups are listed in each group's drill-down but not volume-attributed to any single group.