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Medicare California · CY2024

Who bills the most Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967) to Medicare in California?

Medicare Part B FFS · CY2024 · as published by CMS
110
Billing groups
5,230,361
Named-group FFS services
$9,376,016
Named-group submitted charges
$2
Avg charge / service
$0
Avg allowed / service
62%
Top-5 concentration
1%
Independent share

110 physician groups billed Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967) to Medicare fee-for-service in California in 2024; the top five named groups hold 62% of that volume, and independent (non-hospital-affiliated) groups deliver 1%.

Q9967 — Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml · 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 Q9967 svcs Share*Phone
1 SUTTER VALLEY MEDICAL FOUNDATION SACRAMENTOCADIAGNOSTIC RADIOLOGY 2420 969,038 8.9% (916) 681-8852
2 SUTTER BAY MEDICAL FOUNDATION PALO ALTOCAINTERNAL MEDICINE 3716 853,098 7.8% (415) 600-1020
3 SCRIPPS HEALTH LA JOLLACAPHYSICIAN ASSISTANT 1431 661,922 6.1% (858) 455-9100
4 PALM DESERT RADIOLOGY MEDICAL GROUP INC RANCHO MIRAGECADIAGNOSTIC RADIOLOGY 125 416,690 3.8% (760) 773-1251
5 DIGNITY HEALTH MEDICAL FOUNDATION FOLSOMCADIAGNOSTIC RADIOLOGY 1197 363,611 3.3% (916) 983-7476
6 UCLA RADIOLOGY MEDICAL GROUP LOS ANGELESCADIAGNOSTIC RADIOLOGY 191 175,027 1.6% (310) 301-6800
7 CEDARS-SINAI MEDICAL CARE FOUNDATION LOS ANGELESCAPHYSICIAN ASSISTANT 1699 156,021 1.4% (310) 423-0674
8 BEVERLY RADIOLOGY MEDICAL GROUP III GARDEN GROVECADIAGNOSTIC RADIOLOGY 328 130,819 1.2%
9 RADIANT IMAGING INC PASADENACADIAGNOSTIC RADIOLOGY 67 100,875 0.9% (626) 229-8969
10 CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC SANTA BARBARACADIAGNOSTIC RADIOLOGY 64 80,793 0.7% (800) 841-4236
11 EPIC CARE PLEASANT HILLCAHEMATOLOGY/ONCOLOGY 54 70,150 0.6% (925) 687-2570
12 CALIFORNIA CANCER ASSOCIATES FOR RESEARCH AND EXCELLENCE INC FRESNOCAHEMATOLOGY/ONCOLOGY 62 68,371 0.6% (559) 326-1222
13 IHS RADIOLOGY MEDICAL GROUP INC SAN DIEGOCADIAGNOSTIC RADIOLOGY 68 61,840 0.6% (619) 295-9729
14 RAVI PATEL M D INC BAKERSFIELDCAHEMATOLOGY/ONCOLOGY 20 59,981 0.5% (661) 322-2206
15 SHARP REES-STEALY MEDICAL GROUP INC SAN DIEGOCAPHYSICIAN ASSISTANT 872 57,367 0.5% (858) 499-2600
16 SVMHS CLINICS SALINASCAPHYSICIAN ASSISTANT 245 52,975 0.5% (831) 422-3636
17 MERCED MRI MEDICAL GROUP LOS BANOSCADIAGNOSTIC RADIOLOGY 4 51,303 0.5% (209) 384-4250
18 CARDIOVASCULAR MEDICAL GROUP OF SOUTHERN CALIFORNIA BEVERLY HILLSCACARDIOVASCULAR DISEASE (CARDIOLOGY) 11 49,100 0.4% (310) 278-3400
19 KERN RADIOLOGY MEDICAL GROUP INC BAKERSFIELDCADIAGNOSTIC RADIOLOGY 87 47,584 0.4% (661) 616-1458
20 VALLEY RADIOLOGY MEDICAL ASSOCIATES INC SAN JOSECADIAGNOSTIC RADIOLOGY 25 46,650 0.4% (408) 358-6881
21 SILICON VALLEY MEDICAL IMAGING INC A MEDICAL CORPORATION FREMONTCANUCLEAR MEDICINE 3 45,200 0.4% (510) 792-9700
22 ADVENTIST HEALTH PHYSICIANS NETWORK HANFORDCANURSE PRACTITIONER 651 43,271 0.4% (559) 583-4695
23 CENTRIC HEALTH BAKERSFIELDCAINTERNAL MEDICINE 63 43,211 0.4%
24 APEX CARDIOLOGY CONSULTANTS INGLEWOODCACARDIOVASCULAR DISEASE (CARDIOLOGY) 8 41,801 0.4% (310) 672-3900
25 UNITED MEDICAL IMAGING HEALTHCARE INC LOS ANGELESCADIAGNOSTIC RADIOLOGY 59 33,800 0.3% (323) 262-1814
26 PACIFIC VASCUCARE, INC. LOS ANGELESCAVASCULAR SURGERY 4 31,640 0.3% (213) 201-0850
27 MAYO CLINIC ARIZONA PHOENIXCAPHYSICIAN ASSISTANT 1635 30,752 0.3% (800) 603-0558
28 TOWER UROLOGY INC LOS ANGELESCAUROLOGY 13 23,313 0.2% 3108549898159
29 ZWANGER AND PESIRI RADIOLOGY GROUP LLP LINDENHURSTCADIAGNOSTIC RADIOLOGY 91 21,810 0.2% (631) 225-7200
30 BASS MEDICAL GROUP WALNUT CREEKCAOTOLARYNGOLOGY 318 20,679 0.2%
31 CALIFORNIA MEDICAL IMAGING ASSOCIATES INC VISALIACADIAGNOSTIC RADIOLOGY 5 20,445 0.2% (559) 713-6050
32 CALIFORNIA IMAGING AND DIAGNOSTICS MEDICAL GROUP, INC. HEMETCADIAGNOSTIC RADIOLOGY 3 19,332 0.2% (951) 929-9688
33 BEND MEMORIAL CLINIC PC BENDCAPHYSICIAN ASSISTANT 233 18,900 0.2% (541) 382-2811
34 UROLOGY ASSOCIATES OF CENTRAL CALIFORNIA MEDICAL GROUP INC FRESNOCAUROLOGY 11 18,790 0.2% (559) 321-2800
35 PROHEALTH ADVANCED IMAGING MEDICAL GROUP INC NORTH HOLLYWOODCADIAGNOSTIC RADIOLOGY 13 18,785 0.2% (818) 301-6700
36 MICHAEL P SHERMAN MD PHD A MEDICAL CORPORATION WALNUT CREEKCAHEMATOLOGY/ONCOLOGY 13 16,775 0.2% (925) 939-9610
37 MINIMALLY INVASIVE SURGICAL SOLUTIONS MEDICAL CORPORATION SAN JOSECAINTERVENTIONAL RADIOLOGY 5 15,540 0.1% (408) 918-0405
38 DIAGNOSTIC CENTERS OF AMERICA, LLP BOYNTON BEACHCADIAGNOSTIC RADIOLOGY 103 13,320 0.1% (561) 496-6935
39 CROWN VALLEY RADIOLOGISTS INC A PROFESSIONAL MEDICAL CORP MISSION VIEJOCADIAGNOSTIC RADIOLOGY 5 13,303 0.1% (949) 367-1010
40 STOCKDALE RADIOLOGY PHYSICIANS SERVICES INC BAKERSFIELDCADIAGNOSTIC RADIOLOGY 3 13,168 0.1% (661) 631-8000
41 VALLEY RADIOLOGY CONSULTANTS MEDICAL GROUP INC ESCONDIDOCADIAGNOSTIC RADIOLOGY 10 12,327 0.1% (760) 520-8500
42 MORAN ROWEN AND DORSEY INC ORANGECADIAGNOSTIC RADIOLOGY 35 11,001 0.1% (714) 628-3305
43 INTELLIRAD IMAGING LLC MIAMICADIAGNOSTIC RADIOLOGY 61 10,941 0.1% (305) 854-4400
44 NEPHROLOGY ASSOCIATES OF UPLAND AND POMONA POMONACANEPHROLOGY 6 10,825 0.1% (909) 981-5882
45 INTEGRATED PAIN SPECIALISTS OF SOUTHERN CALIFORNIA INC SAN DIEGOCAANESTHESIOLOGY 2 10,200 0.1% (619) 398-2988
46 SAN JOAQUIN CARDIOLOGY MEDICAL GROUP INC STOCKTONCACARDIOVASCULAR DISEASE (CARDIOLOGY) 8 10,146 0.1% (209) 464-7681
47 PENINSULA RADIOLOGICAL ASSOCIATES LIMITED NEWPORT NEWSCADIAGNOSTIC RADIOLOGY 65 8,600 0.1% (757) 594-3900
48 MODESTO ADVANCED DIAGNOSTIC IMAGING MEDICAL CENTER MODESTOCADIAGNOSTIC RADIOLOGY 56 8,495 0.1% (209) 524-6800
49 ATHAR M. ANSARI M D INC. EL CENTROCACARDIOVASCULAR DISEASE (CARDIOLOGY) 2 8,353 0.1% (760) 353-3222
50 AM AND BB IMAGING CENTER INC CARLSBADCADIAGNOSTIC RADIOLOGY 2 8,051 0.1% (760) 730-3536
51 EINSTEIN PRACTICE PLAN INC PHILADELPHIACADIAGNOSTIC RADIOLOGY 740 7,213 0.1% (215) 456-8242
52 CLAREMONT IMAGING ASSOCIATES A MEDICAL CORPORATION POMONACADIAGNOSTIC RADIOLOGY 5 7,074 0.1% (909) 450-0393
53 UROLOGICAL ASSOCIATES PC MOLINECAUROLOGY 16 7,030 0.1% (563) 359-2997
54 HEALTH DIAGNOSTICS OF CALIFORNIA A PROFESSIONAL CORPORATION IRVINECADIAGNOSTIC RADIOLOGY 168 6,672 0.1% (480) 306-6949
55 SAINT AGNES MEDICAL FOUNDATION FRESNOCAINTERNAL MEDICINE 155 6,588 0.1% (559) 450-5777
56 SOUTHERN CALIFORNIA MULTI-SPECIALTY CENTER INC SHERMAN OAKSCAVASCULAR SURGERY 16 6,211 0.1% (818) 900-6480
57 UNIVERSITY SPINE AND PAIN CENTER INC HERMOSA BEACHCAPAIN MANAGEMENT 3 6,061 0.1% (424) 488-0500
58 VALLEY MRI AND RADIOLOGY INC STOCKTONCADIAGNOSTIC RADIOLOGY 9 5,980 0.1% (209) 467-1000
59 VASCULAR INSTITUTE OF CLEVELAND LLC GARFIELD HEIGHTSCACARDIAC SURGERY 2 5,948 0.1% (216) 839-0692
60 BEVERLY HILLS ONCOLOGY MEDICAL GROUP INC BEVERLY HILLSCARADIATION ONCOLOGY 8 5,696 0.1% (310) 432-8999
61 SANTA BARBARA RADIOLOGY MEDICAL GROUP, INC. SANTA BARBARACADIAGNOSTIC RADIOLOGY 10 5,065 0.0% (805) 569-7279
62 IMPERIAL VALLEY FAMILY CARE MEDICAL GROUP A P C EL CENTROCAFAMILY PRACTICE 23 4,744 0.0% (760) 353-6363
63 SHASTA ORTHOPEDICS AND SPORTS MEDICINE A MEDICAL CORPORATION REDDINGCAPODIATRY 37 4,457 0.0% (530) 246-2467
64 REGENTS OF THE UNIVERSITY OF CALIFORNIA SAN DIEGOCADIAGNOSTIC RADIOLOGY 2057 4,345 0.0% (800) 926-8273
65 COUNTY OF MONTEREY SALINASCADIAGNOSTIC RADIOLOGY 183 4,325 0.0% (831) 755-4235
66 KAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC LARGOCAINTERNAL MEDICINE 1965 3,720 0.0% (301) 618-5700
67 STANFORD HEALTH CARE STANFORDCADIAGNOSTIC RADIOLOGY 3039 3,702 0.0% (650) 723-4000
68 CITY OF HOPE MEDICAL FOUNDATION DUARTECANURSE PRACTITIONER 942 3,650 0.0% (626) 256-4673
69 EAST BAY CARDIOVASCULAR AND THORACIC ASSOCIATES INC DANVILLECACARDIAC SURGERY 17 3,574 0.0% (925) 676-2600
70 NEPHROLOGY ASSOCIATES MEDICAL GROUP INC RIVERSIDECANEPHROLOGY 63 3,544 0.0% (951) 687-2800
71 PERMANENTE MEDICAL GROUP INC SANTA CLARACAINTERNAL MEDICINE 10890 3,270 0.0% (408) 851-1000
72 SASHA SALLOUM MD INC A PROFESSIONAL MEDICAL CORPORATION CHULA VISTACAPODIATRY 9 3,098 0.0% (619) 567-7007
73 RADIOLOGY AND IMAGING INC SPRINGFIELDCADIAGNOSTIC RADIOLOGY 60 2,800 0.0% (413) 827-7400
74 ADVANCED IMAGING CENTER, INC. LANCASTERCADIAGNOSTIC RADIOLOGY 8 2,601 0.0% (661) 949-8111
75 GASTON RADIOLOGY PA GASTONIACADIAGNOSTIC RADIOLOGY 28 2,450 0.0% (704) 834-2000
76 PAUL E KIM MD INC SAN DIEGOCAANESTHESIOLOGY 2 2,297 0.0% (619) 543-0144
77 BANDB MEDICAL GROUP INC BELLFLOWERCAVASCULAR SURGERY 9 2,250 0.0% (562) 888-8961
78 ENLOE MEDICAL CENTER CHICOCADIAGNOSTIC RADIOLOGY 362 2,230 0.0% (530) 332-4470
79 THE SOUTHEAST PERMANENTE MEDICAL GROUP ATLANTACAFAMILY PRACTICE 788 2,230 0.0% (404) 364-7206
80 RIDEOUT MEMORIAL HOSPITAL MARYSVILLECADIAGNOSTIC RADIOLOGY 89 2,025 0.0% (530) 740-1900
81 MONTEFIORE MEDICAL CENTER BRONXCAPHYSICAL THERAPIST IN PRIVATE PRACTICE 2796 2,022 0.0% (866) 633-8255
82 REDDING PAIN MEDICINE REDDINGCANURSE PRACTITIONER 2 1,956 0.0% (530) 247-3733
83 HAWAII PERMANENTE MEDICAL GROUP INC HONOLULUCAFAMILY PRACTICE 722 1,900 0.0% (808) 432-0000
84 RIVER CITY IMAGING ASSOCIATES PA SAN ANTONIOCADIAGNOSTIC RADIOLOGY 22 1,850 0.0% (210) 704-2011
85 RADIOLOGY ASSOCIATES OF SAN LUIS OBISPO A MEDICAL GROUP INC SAN LUIS OBISPOCADIAGNOSTIC RADIOLOGY 55 1,800 0.0% (805) 461-7080
86 ADVANCED RADIOLOGY P A BALTIMORECADIAGNOSTIC RADIOLOGY 161 1,680 0.0% (888) 972-9700
87 BALBOA NEPHROLOGY MEDICAL GROUP INC SAN DIEGOCANEPHROLOGY 80 1,644 0.0% (619) 582-4490
88 CLEAR HEART-LOVELAND LLC LOVELANDCACARDIOVASCULAR DISEASE (CARDIOLOGY) 2 1,487 0.0% (970) 900-1707
89 EVSLA MEDICAL CORPORATION VALENCIACAINTERVENTIONAL RADIOLOGY 3 1,376 0.0% (661) 705-9706
90 VIDANT MEDICAL GROUP LLC KENANSVILLECAPHYSICIAN ASSISTANT 956 1,359 0.0% (910) 296-0941
91 ORTHOWEST IRVINECAORTHOPEDIC SURGERY 47 1,325 0.0% (949) 586-3200
92 MONTEREY BAY VASCULAR INC APTOSCAGENERAL SURGERY 3 1,294 0.0% (831) 318-0010
93 WESTERN BARIATRIC A MEDICAL CORPORATION SAN BERNARDINOCAPHYSICIAN ASSISTANT 12 497 0.0% (909) 475-8611
94 FACULTY PHYSICIANS AND SURGEONS OF LLUSM LOMA LINDACADIAGNOSTIC RADIOLOGY 1317 489 0.0%
95 FOOTHILLS PAIN MANAGEMENT CLINIC PC RANCHO CUCAMONGACAPHYSICIAN ASSISTANT 9 475 0.0% (626) 608-7320
96 PARAGON PHYSICAL THERAPY AND REHAB LLC BULLHEAD CITYCAORTHOPEDIC SURGERY 82 448 0.0%
97 REGENTS UNIV OF CALIFORNIA UCSF SAN FRANCISCOCAPHYSICIAN ASSISTANT 277 381 0.0% (415) 476-1000
98 TRI-CITY ORTHOPAEDIC SURGERY MEDICAL GROUP INC. OCEANSIDECAORTHOPEDIC SURGERY 25 253 0.0% (760) 724-9000
99 NORCAL PAIN TREATMENT CENTER CORP TURLOCKCANURSE PRACTITIONER 10 187 0.0% (209) 448-3000
100 ADVANCED PAIN DIAGNOSTIC AND SOLUTIONS INC SACRAMENTOCANURSE PRACTITIONER 20 176 0.0% (916) 953-7571

*Share of California's disclosed Medicare-FFS services for Q9967, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing Q9967 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 →