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Medicare California · CY2024

Who bills the most Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015) to Medicare in California?

Medicare Part B FFS · CY2024 · as published by CMS
38
Billing groups
90,045
Named-group FFS services
$158,599,271
Named-group submitted charges
$1,761
Avg charge / service
$414
Avg allowed / service
48%
Top-5 concentration
3%
Independent share

38 physician groups billed Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015) to Medicare fee-for-service in California in 2024; the top five named groups hold 48% of that volume, and independent (non-hospital-affiliated) groups deliver 3%.

G6015 — Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session · 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).

Payer-mix context

Medicare fee-for-service covers 49% of Medicare in California; Medicare Advantage penetration 45% → 51% since 2020.

Market structure — concentration, independent share, and the consolidation trend for this market — is part of the market analytics platform — built, not launched yet. Notify me at launch →
#Physician groupCityStSpecialty Providers G6015 svcs Share*Phone
1 SUTTER BAY MEDICAL FOUNDATION PALO ALTOCAINTERNAL MEDICINE 3716 10,700 10.2% (415) 600-1020
2 CITY OF HOPE MEDICAL FOUNDATION DUARTECANURSE PRACTITIONER 942 9,577 9.1% (626) 256-4673
3 SUTTER VALLEY MEDICAL FOUNDATION SACRAMENTOCADIAGNOSTIC RADIOLOGY 2420 9,503 9.0% (916) 681-8852
4 COASTAL RADIATION ONCOLOGY MEDICAL GROUP, INC. SALINASCARADIATION ONCOLOGY 11 6,838 6.5% (831) 758-2724
5 PARAGON CHICO MEDICAL GROUP INC CHICOCARADIATION ONCOLOGY 10 6,799 6.5% (530) 691-5920
6 SANSUM CLINIC SANTA BARBARACAINTERNAL MEDICINE 322 4,538 4.3% (805) 681-7500
7 VALLEY TUMOR MEDICAL GROUP A MEDICAL CORPORATION PALMDALECAHEMATOLOGY/ONCOLOGY 4 3,218 3.1% (661) 208-4790
8 SCRIPPS HEALTH LA JOLLACAPHYSICIAN ASSISTANT 1431 3,213 3.0% (858) 455-9100
9 RAVI PATEL M D INC BAKERSFIELDCAHEMATOLOGY/ONCOLOGY 20 2,899 2.8% (661) 322-2206
10 CALIFORNIA CANCER ASSOCIATES FOR RESEARCH AND EXCELLENCE INC FRESNOCAHEMATOLOGY/ONCOLOGY 62 2,825 2.7% (559) 326-1222
11 CEDARS-SINAI MEDICAL CARE FOUNDATION LOS ANGELESCAPHYSICIAN ASSISTANT 1699 2,624 2.5% (310) 423-0674
12 GOLDEN GATE UROLOGY INC SAN FRANCISCOCAUROLOGY 12 2,446 2.3% (415) 922-3255
13 CANCER THERAPY MEDICAL GROUP INC FRESNOCARADIATION ONCOLOGY 13 2,410 2.3% (559) 437-1000
14 EPIC CARE PLEASANT HILLCAHEMATOLOGY/ONCOLOGY 54 1,897 1.8% (925) 687-2570
15 EL PORTAL RADIATION ONCOLOGY CENTER MERCEDCADIAGNOSTIC RADIOLOGY 4 1,719 1.6% (209) 726-3410
16 GOLDEN STATE RADIATION ONCOLOGY, INC. WOODLAND HILLSCARADIATION ONCOLOGY 2 1,637 1.6% (818) 449-2700
17 STANFORD HEALTH CARE STANFORDCADIAGNOSTIC RADIOLOGY 3039 1,561 1.5% (650) 723-4000
18 VENTURA COUNTY RADIATION ONCOLOGY MEDICAL GROUP, INC. CAMARILLOCARADIATION ONCOLOGY 2 1,268 1.2% (805) 484-1919
19 RADIATION ONCOLOGY NETWORK OF SOUTHERN CALIFORNIA CHULA VISTACARADIATION ONCOLOGY 5 1,175 1.1% (619) 502-7730
20 GENESIS HEALTHCARE PARTNERS PC TORRANCECAGASTROENTEROLOGY 211 1,118 1.1% (310) 534-8400
21 KENNETH M TOKITA MD INC IRVINECADIAGNOSTIC RADIOLOGY 2 1,070 1.0% (949) 417-1100
22 PROVIDENCE MEDICAL FOUNDATION FULLERTONCAPHYSICIAN ASSISTANT 1455 1,065 1.0% (714) 871-3006
23 J ROBERT WEST MD INC LAS VEGASCADERMATOLOGY 140 1,017 1.0% (702) 258-1001
24 MOJAVE RADIATION ONCOLOGY MEDICAL GROUP INC APPLE VALLEYCARADIATION ONCOLOGY 2 986 0.9% (760) 242-9999
25 SALINAS VALLEY UROLOGY ASSOCIATES SALINASCARADIATION ONCOLOGY 2 969 0.9% (831) 757-3006
26 DIGNITY HEALTH MEDICAL FOUNDATION FOLSOMCADIAGNOSTIC RADIOLOGY 1197 941 0.9% (916) 983-7476
27 INTERVENTIONAL RADIATION ONCOLOGY OF CALIFORNIA INC APPLE VALLEYCAMEDICAL ONCOLOGY 8 897 0.9% (650) 485-9882
28 ALBERT C MAK MD INC ALHAMBRACARADIATION ONCOLOGY 2 751 0.7% (626) 227-2777
29 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA LOS ANGELESCARADIATION ONCOLOGY 31 682 0.6% (310) 825-9304
30 MORTEZA DOWLATSHAHI M D INC SAN JOSECARADIATION ONCOLOGY 2 648 0.6% (408) 729-4673
31 CHAD SILA M D A PROFESSIONAL CORPORATION LAWNDALECARADIATION ONCOLOGY 6 626 0.6% (310) 978-4970
32 BASS MEDICAL GROUP WALNUT CREEKCAOTOLARYNGOLOGY 318 625 0.6%
33 UNIVERSITY OF PITTSBURGH CANCER INSTITUTE CANCER SERVICES PITTSBURGHCARADIATION ONCOLOGY 57 492 0.5% (412) 623-6720
34 BEVERLY HILLS ONCOLOGY MEDICAL GROUP INC BEVERLY HILLSCARADIATION ONCOLOGY 8 369 0.4% (310) 432-8999
35 UC REGENTS DEPARTMENT OF RADIATION ONCOLOGY ORANGECARADIATION ONCOLOGY 17 356 0.3% (714) 456-5508
36 RADIANT ONCOLOGY MEDICAL GROUP PALM DESERTCARADIATION ONCOLOGY 2 284 0.3% (760) 200-8777
37 EMANATE HEALTH MEDICAL CARE FOUNDATION WEST COVINACAFAMILY PRACTICE 81 168 0.2% (626) 732-8391
38 GLENDALE ADVENTIST MEDICAL CENTER GLENDALECAANESTHESIOLOGY 100 134 0.1% (818) 863-4099

*Share of California's disclosed Medicare-FFS services for G6015, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing G6015 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 →