Who bills the most Injection, mepolizumab, 1 mg (J2182) to Medicare in California?
Medicare Part B FFS · CY2024 · as published by CMS6 physician groups billed Injection, mepolizumab, 1 mg (J2182) to Medicare fee-for-service in California in 2024; independent (non-hospital-affiliated) groups deliver 0%.
J2182 — Injection, mepolizumab, 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 | J2182 svcs | Share* | Phone |
|---|---|---|---|---|---|---|---|---|
| 1 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 42,250 | 24.4% | (858) 455-9100 |
| 2 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 30,200 | 17.4% | (916) 681-8852 |
| 3 | HUNTINGTON BEACH INTERNAL MEDICINE GROUP INC | NEWPORT BEACH | CA | INTERNAL MEDICINE | 3 | 26,100 | 15.1% | (949) 274-8030 |
| 4 | INFUSION4HEALTH | THOUSAND OAKS | CA | NURSE PRACTITIONER | 26 | 13,500 | 7.8% | (805) 719-3700 |
| 5 | OSO SPECIALTY INFUSION INC | IRVINE | CA | ALLERGY/IMMUNOLOGY | 10 | 10,400 | 6.0% | (949) 660-7126 |
| 6 | INFUSION EXPRESS OF CALIFORNIA INC | SUNNYVALE | CA | NURSE PRACTITIONER | 23 | 2,900 | 1.7% | (408) 228-3700 |
*Share of California's disclosed Medicare-FFS services for J2182, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing J2182 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 →