Who bills the most Injection, lecanemab-irmb, 1 mg (J0174) to Medicare in California?
Medicare Part B FFS · CY2024 · as published by CMS6 physician groups billed Injection, lecanemab-irmb, 1 mg (J0174) to Medicare fee-for-service in California in 2024; independent (non-hospital-affiliated) groups deliver 2%.
J0174 — Injection, lecanemab-irmb, 1 mg · Source: CMS Medicare Physician & Other Practitioners PUF (Part B), CY2024 release. Medicare fee-for-service only.
Snapshot covers the whole California market — the table below shows the top 100 groups (free tier).
Medicare fee-for-service covers 49% of Medicare in California; Medicare Advantage penetration 45% → 51% since 2020.
| # | Physician group | City | St | Specialty | Providers | J0174 svcs | Share* | Phone |
|---|---|---|---|---|---|---|---|---|
| 1 | INFUSION4HEALTH | THOUSAND OAKS | CA | NURSE PRACTITIONER | 26 | 196,161 | 13.1% | (805) 719-3700 |
| 2 | THAILA RAMANUJAM M D INC | SANTA CRUZ | CA | RHEUMATOLOGY | 4 | 168,566 | 11.2% | (831) 462-8960 |
| 3 | CABRILLO CENTER FOR RHEUMATIC DISEASE APC | SAN DIEGO | CA | RHEUMATOLOGY | 5 | 146,700 | 9.8% | (619) 334-4869 |
| 4 | COMMUNITY HEALTH CENTERS OF AMERICA | MARIPOSA | CA | NURSE PRACTITIONER | 106 | 124,910 | 8.3% | (209) 966-2344 |
| 5 | NIGHAT SARWAR MD INC | Fresno | CA | NEUROLOGY | 2 | 57,800 | 3.9% | — |
| 6 | ALERACARE MEDICAL GROUP OF CALIFORNIA | GLENDALE | CA | NURSE PRACTITIONER | 9 | 15,000 | 1.0% | (888) 209-8874 |
*Share of California's disclosed Medicare-FFS services for J0174, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing J0174 in California — 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 →