Who bills the most Injection of additional new drug or substance into vein (96375) to Medicare in California?
Medicare Part B FFS · CY2024 · as published by CMS77 physician groups billed Injection of additional new drug or substance into vein (96375) to Medicare fee-for-service in California in 2024; the top five named groups hold 45% of that volume, and independent (non-hospital-affiliated) groups deliver 2%.
96375 — Injection of additional new drug or substance into vein · 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 | 96375 svcs | Share* | Phone |
|---|---|---|---|---|---|---|---|---|
| 1 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 18,048 | 10.8% | (310) 825-7922 |
| 2 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 11,708 | 7.0% | (626) 256-4673 |
| 3 | RITA R ELLITHORPE MD INC | TUSTIN | CA | PHYSICIAN ASSISTANT | 6 | 9,391 | 5.6% | (714) 544-1521 |
| 4 | SILICON VALLEY MEDICAL IMAGING INC A MEDICAL CORPORATION | FREMONT | CA | NUCLEAR MEDICINE | 3 | 6,401 | 3.8% | (510) 792-9700 |
| 5 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 6,390 | 3.8% | (858) 455-9100 |
| 6 | DESERT HEMATOLOGY-ONCOLOGY MEDICAL GROUP INC | RANCHO MIRAGE | CA | HEMATOLOGY/ONCOLOGY | 10 | 5,508 | 3.3% | (760) 568-3613 |
| 7 | SOLANO HEMATOLOGY - ONCOLOGY | VALLEJO | CA | HEMATOLOGY/ONCOLOGY | 3 | 3,835 | 2.3% | (707) 551-3300 |
| 8 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 3,786 | 2.3% | (415) 600-1020 |
| 9 | CEDARS-SINAI MEDICAL CARE FOUNDATION | LOS ANGELES | CA | PHYSICIAN ASSISTANT | 1699 | 3,182 | 1.9% | (310) 423-0674 |
| 10 | KLEYNBERG MEDICAL CLINIC INC | LOS ANGELES | CA | HEMATOLOGY/ONCOLOGY | 2 | 3,079 | 1.8% | (323) 965-9995 |
| 11 | STOCKTON HEMATOLOGY ONCOLOGY MEDICAL GROUP INC | STOCKTON | CA | HEMATOLOGY | 9 | 2,922 | 1.8% | — |
| 12 | SANSUM CLINIC | SANTA BARBARA | CA | INTERNAL MEDICINE | 322 | 2,735 | 1.6% | (805) 681-7500 |
| 13 | BORIS D RATINER, MD, INC | TARZANA | CA | RHEUMATOLOGY | 6 | 2,556 | 1.5% | (818) 996-4077 |
| 14 | CALIFORNIA CANCER ASSOCIATES FOR RESEARCH AND EXCELLENCE INC | FRESNO | CA | HEMATOLOGY/ONCOLOGY | 62 | 2,169 | 1.3% | (559) 326-1222 |
| 15 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 2,143 | 1.3% | (650) 723-4000 |
| 16 | CANCER CENTER ONCOLOGY MEDICAL GROUP INC-EAST COUNTY | LA MESA | CA | HEMATOLOGY/ONCOLOGY | 4 | 1,741 | 1.0% | (619) 644-3030 |
| 17 | SCIOMETRIX INC | MENANDS | CA | INTERNAL MEDICINE | 45 | 1,674 | 1.0% | (248) 369-3315 |
| 18 | ERIK LUNDQUIST MD INC | TEMECULA | CA | FAMILY PRACTICE | 3 | 1,651 | 1.0% | 9513834333826 |
| 19 | UCSF MEDICAL GROUP BUSINESS SERVICES | SAN FRANCISCO | CA | DIAGNOSTIC RADIOLOGY | 1548 | 1,508 | 0.9% | (415) 476-1000 |
| 20 | MICHAEL P SHERMAN MD PHD A MEDICAL CORPORATION | WALNUT CREEK | CA | HEMATOLOGY/ONCOLOGY | 13 | 1,498 | 0.9% | (925) 939-9610 |
| 21 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 1,415 | 0.8% | (916) 983-7476 |
| 22 | PROVIDENCE SAINT JOHNS MEDICAL FOUNDATION | SANTA MONICA | CA | PHYSICIAN ASSISTANT | 287 | 1,385 | 0.8% | (310) 829-6789 |
| 23 | INLAND RHEUMATOLOGY AND OSTEOPOROSIS MEDICAL GROUP INC | UPLAND | CA | RHEUMATOLOGY | 4 | 1,321 | 0.8% | (909) 982-0099 |
| 24 | MARIN CANCER CARE, INC. | GREENBRAE | CA | MEDICAL ONCOLOGY | 13 | 1,273 | 0.8% | (415) 925-5000 |
| 25 | ARTHRITIS AND OSTEOPOROSIS MEDICAL CENTER, INC | LA PALMA | CA | PHYSICIAN ASSISTANT | 9 | 1,208 | 0.7% | 7146701340236 |
| 26 | SIERRA HEMATOLOGY AND ONCOLOGY MEDICAL CENTERS | CARMICHAEL | CA | HEMATOLOGY/ONCOLOGY | 16 | 1,051 | 0.6% | (916) 962-1544 |
| 27 | SYNERGY HEMATOLOGY ONCOLOGY MEDICAL ASSOCIATES INC | WEST HOLLYWOOD | CA | INTERNAL MEDICINE | 8 | 872 | 0.5% | (323) 525-1111 |
| 28 | CENTER FOR RHEUMATOLOGY MEDICAL CORPORATION | LOS ANGELES | CA | RHEUMATOLOGY | 9 | 861 | 0.5% | (310) 659-7878 |
| 29 | NAZANIN FIROOZ MD INC | WOODLAND HILLS | CA | RHEUMATOLOGY | 2 | 835 | 0.5% | (818) 598-0000 |
| 30 | UC REGENTS | ORANGE | CA | INTERNAL MEDICINE | 296 | 812 | 0.5% | (714) 456-7002 |
| 31 | KAWEAH DELTA HEALTH CARE DISTRICT | VISALIA | CA | DIAGNOSTIC RADIOLOGY | 101 | 786 | 0.5% | (559) 624-6090 |
| 32 | LOS ANGELES HEMATOLOGY-ONCOLOGY MEDICAL GROUP | LOS ANGELES | CA | HEMATOLOGY/ONCOLOGY | 51 | 779 | 0.5% | (213) 977-1214 |
| 33 | CENTRAL COAST ONCOLOGY AND HEMATOLOGY | SANTA CRUZ | CA | MEDICAL ONCOLOGY | 2 | 770 | 0.5% | (831) 475-2220 |
| 34 | S DHAND M D INC | WEST COVINA | CA | GENERAL PRACTICE | 2 | 668 | 0.4% | (626) 960-7759 |
| 35 | CANCER AND BLOOD SPECIALTY CLINIC | LOS ALAMITOS | CA | HEMATOLOGY/ONCOLOGY | 17 | 628 | 0.4% | (562) 598-9745 |
| 36 | OMID VESAL, MD, MEDICAL CORPORATION | IRVINE | CA | FAMILY PRACTICE | 2 | 591 | 0.4% | (949) 222-2722 |
| 37 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 580 | 0.3% | (925) 296-9720 |
| 38 | HEMATOLOGY AND ONCOLOGY ASSOCIATES OF NORTHERN CALIFORNIA | FOLSOM | CA | HEMATOLOGY/ONCOLOGY | 2 | 557 | 0.3% | (916) 250-0377 |
| 39 | HELIXONA | IRVINE | CA | FAMILY PRACTICE | 2 | 545 | 0.3% | (949) 257-2644 |
| 40 | VALLEY CANCER MEDICAL CENTER INC | MANTECA | CA | HEMATOLOGY/ONCOLOGY | 5 | 533 | 0.3% | 2098231609331 |
| 41 | MONTEREY BAY ONCOLOGY A MEDICAL CORPORATION | MONTEREY | CA | HEMATOLOGY/ONCOLOGY | 10 | 522 | 0.3% | (831) 375-4105 |
| 42 | RHEUMATOLOGY SERVICES MEDICAL GROUP | SAN LUIS OBISPO | CA | NURSE PRACTITIONER | 9 | 405 | 0.2% | 6616958385118 |
| 43 | RAMIN ASHTIANI, MD A PROFESSIONAL CORPORATION | VICTORVILLE | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 5 | 398 | 0.2% | (760) 241-3547 |
| 44 | MEDICAL ONCOLOGY ASSOCIATES OF SAN DIEGO A MEDICAL GROUP INC | SAN DIEGO | CA | HEMATOLOGY/ONCOLOGY | 13 | 396 | 0.2% | (858) 637-7888 |
| 45 | THE ONCOLOGY INSTITUTE CA, A PROFESSIONAL CORPORATION | LAKEWOOD | CA | HEMATOLOGY/ONCOLOGY | 110 | 395 | 0.2% | (562) 232-0550 |
| 46 | KERN RURAL WELLNESS CENTER INC | ARVIN | CA | NURSE PRACTITIONER | 9 | 343 | 0.2% | — |
| 47 | BASS MEDICAL GROUP | WALNUT CREEK | CA | OTOLARYNGOLOGY | 318 | 333 | 0.2% | — |
| 48 | AMERICAN ARTHRITIS AND RHEUMATOLOGY ASSOCIATES-CA PC | FRESNO | CA | RHEUMATOLOGY | 13 | 332 | 0.2% | (559) 732-9900 |
| 49 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 328 | 0.2% | (800) 926-8273 |
| 50 | ZOUHEIR ELIAS, MD, A PROFESSIONAL CORPORATION | NORTHRIDGE | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 2 | 325 | 0.2% | (818) 734-4888 |
| 51 | MEMORIALCARE MEDICAL FOUNDATION | LONG BEACH | CA | FAMILY PRACTICE | 549 | 305 | 0.2% | (562) 346-2222 |
| 52 | ARTHRITIS MEDICAL CLINIC | RIVERSIDE | CA | RHEUMATOLOGY | 4 | 298 | 0.2% | (951) 781-7700 |
| 53 | PCR ONCOLOGY INC | ARROYO GRANDE | CA | HEMATOLOGY/ONCOLOGY | 2 | 271 | 0.2% | (805) 474-9143 |
| 54 | SANT P CHAWLA M D INC | SANTA MONICA | CA | HEMATOLOGY | 4 | 245 | 0.1% | (310) 552-9999 |
| 55 | INFUSION EXPRESS OF CALIFORNIA INC | SUNNYVALE | CA | NURSE PRACTITIONER | 23 | 239 | 0.1% | (408) 228-3700 |
| 56 | COMPLETE CARE COMMUNITY HEALTH CENTER, INC | LOS ANGELES | CA | NURSE PRACTITIONER | 46 | 209 | 0.1% | (323) 266-6700 |
| 57 | EPIC CARE | PLEASANT HILL | CA | HEMATOLOGY/ONCOLOGY | 54 | 208 | 0.1% | (925) 687-2570 |
| 58 | JIM C KIM MD INC | BAKERSFIELD | CA | NURSE PRACTITIONER | 2 | 176 | 0.1% | (661) 716-0333 |
| 59 | SAMY METYAS M.D. INC | COVINA | CA | RHEUMATOLOGY | 3 | 164 | 0.1% | (626) 966-1909 |
| 60 | ROGER KORNU MD PC | TUSTIN | CA | NURSE PRACTITIONER | 3 | 162 | 0.1% | (714) 406-4461 |
| 61 | DOCS MEDICAL GROUP INC | REDDING | CA | PHYSICIAN ASSISTANT | 13 | 158 | 0.1% | (530) 243-8667 |
| 62 | OMID S. SHAYE, M.D., A MEDICAL CORPORATION | WEST HILLS | CA | HEMATOLOGY/ONCOLOGY | 3 | 137 | 0.1% | (818) 346-1773 |
| 63 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | LOMA LINDA | CA | DIAGNOSTIC RADIOLOGY | 1317 | 136 | 0.1% | — |
| 64 | REGENERATIVE MEDICAL CLINICS OF SO CAL INC. | WEST COVINA | CA | NURSE PRACTITIONER | 2 | 103 | 0.1% | (626) 965-2334 |
| 65 | SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP | LOS ANGELES | CA | INTERNAL MEDICINE | 11157 | 97 | 0.1% | (800) 954-8000 |
| 66 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 88 | 0.1% | (916) 681-8852 |
| 67 | R.S. VENUTURUPALLI, M.D. INC | BEVERLY HILLS | CA | RHEUMATOLOGY | 7 | 78 | 0.0% | 3106520010120 |
| 68 | TEXAS ONCOLOGY PA | DALLAS | CA | PHYSICIAN ASSISTANT | 995 | 70 | 0.0% | — |
| 69 | THAILA RAMANUJAM M D INC | SANTA CRUZ | CA | RHEUMATOLOGY | 4 | 66 | 0.0% | (831) 462-8960 |
| 70 | BEVERLY HILLS ONCOLOGY MEDICAL GROUP INC | BEVERLY HILLS | CA | RADIATION ONCOLOGY | 8 | 60 | 0.0% | (310) 432-8999 |
| 71 | CAMARENA HEALTH | MADERA | CA | FAMILY PRACTICE | 88 | 57 | 0.0% | (559) 664-4000 |
| 72 | USC CARE MEDICAL GROUP INC | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 1374 | 35 | 0.0% | (800) 872-2273 |
| 73 | COUNTY OF SANTA CLARA | SAN JOSE | CA | INTERNAL MEDICINE | 1001 | 34 | 0.0% | (408) 885-5000 |
| 74 | HIGH DESERT MEDICAL CORPORATION | LANCASTER | CA | NURSE PRACTITIONER | 59 | 33 | 0.0% | (661) 945-5984 |
| 75 | SOUTHLAND ARTHRITES AND OSTEOPOROSIS MEDICAL CENTER INC | MENIFEE | CA | RHEUMATOLOGY | 6 | 27 | 0.0% | (951) 652-5000 |
| 76 | GUIDEWELL EMERGENCY MEDICINE DOCTORS, LLC | WINTER PARK | CA | PHYSICIAN ASSISTANT | 90 | 18 | 0.0% | (407) 801-8400 |
| 77 | SVMHS CLINICS | SALINAS | CA | PHYSICIAN ASSISTANT | 245 | 18 | 0.0% | (831) 422-3636 |
*Share of California's disclosed Medicare-FFS services for 96375, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing 96375 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 →