Who bills the most Injection, ferric derisomaltose, 10 mg (J1437) to Medicare in Illinois?
Medicare Part B FFS · CY2024 · as published by CMS5 physician groups billed Injection, ferric derisomaltose, 10 mg (J1437) to Medicare fee-for-service in Illinois in 2024; independent (non-hospital-affiliated) groups deliver 0%.
J1437 — Injection, ferric derisomaltose, 10 mg · 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).
Medicare fee-for-service covers 57% of Medicare in Illinois; Medicare Advantage penetration 30% → 43% since 2020.
| # | Physician group | City | St | Specialty | Providers | J1437 svcs | Share* | Phone |
|---|---|---|---|---|---|---|---|---|
| 1 | ONCOLOGY-HEMATOLOGY ASSOCIATES OF CENTRAL ILLINOIS P C | PEORIA | IL | NURSE PRACTITIONER | 62 | 22,100 | 36.1% | (309) 243-3000 |
| 2 | ILLINOIS CANCER SPECIALISTS | ARLINGTON HEIGHTS | IL | HEMATOLOGY/ONCOLOGY | 29 | 19,400 | 31.6% | (847) 259-4482 |
| 3 | AFFILIATED ONCOLOGISTS LLC | OAK LAWN | IL | PHYSICIAN ASSISTANT | 40 | 6,500 | 10.6% | (708) 684-5475 |
| 4 | FLORIDA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | FORT MYERS | IL | HEMATOLOGY/ONCOLOGY | 437 | 3,700 | 6.0% | (239) 561-9622 |
| 5 | HOPE AND HEALING CANCER SERVICES LLC | NEW LENOX | IL | HEMATOLOGY/ONCOLOGY | 2 | 2,702 | 4.4% | (630) 560-0121 |
*Share of Illinois's disclosed Medicare-FFS services for J1437, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing J1437 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.
How to read this. Figures are Medicare fee-for-service only — not all-payer — from the CMS Medicare Physician & Other Practitioners Public Use File (Part B), CY2024 release. CMS suppresses any provider×code row under 11 beneficiaries, so a missing group means "suppressed," never zero. "Charges" are provider-submitted amounts, not payments. Groups are ranked by measured service volume attributed to clinicians in exactly one group — clinicians affiliated with several groups are listed in rosters but never volume-attributed to a single group — a direct read of the public record, not a rating or quality score. Full method: Methods & Sources.
Comparing against an all-payer estimate?
These are exact counts from Medicare fee-for-service claims — roughly a third to half of most procedure markets, depending on payer mix. Modeled all-payer databases project the remainder statistically; we publish the audited floor and label it as such. Same market, different denominator. How the numbers reconcile →