State Specialty Directory

Medical Oncology in CA

Federal CMS data for 93 medical oncology providers across CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.

93
Providers
Median industry payments
$7,414
93
Medical Oncology Providers
in CA
$7,414
Median Industry Payments
per provider (2018–2024)
1,632
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only Medicare fee-for-service patients (typically 65+). This does not represent total practice volume. Industry payments span multiple years and payment types — they are legal and do not indicate wrongdoing. Medical Oncology includes multiple subspecialties with different practice patterns. Learn more →
Showing top 50 of 93 providers, ranked by Medicare service volume. Search by city to narrow results.

Medical Oncology Providers — CA

NPPES · Open Payments · Medicare
Provider City Medicare Volume Beneficiaries* Top Procedure Industry Payments Payment Type Coverage
GUPTA, SACHIN M.D. Fresno 520,716 11,133 Iron infusion (Injectafer) $120,089 (2018-2024) Consulting (70%) Very High
GHANEM, BASSAM MD Thousand Oaks 212,150 2,247 Filgrastim injection (Zarxio) for white blood cells $6,907 (2018-2023) Food & Beverage (64%) Very High
SIGAL, DARREN MD La Jolla 191,647 2,293 Paclitaxel protein-bound particle injection $278,309 (2018-2024) Consulting (61%) Very High
SHEN, JAMES M.D. Arcadia 140,083 1,922 Darbepoetin injection (Aranesp) for anemia $12,758 (2018-2024) Consulting (71%) Very High
GREENWALD, DANIEL M.D. Santa Barbara 115,008 2,444 Pembrolizumab injection (Keytruda) $173,659 (2018-2024) Consulting (63%) Very High
RAJABI, BABAK MD Carmichael 101,537 1,391 Iron infusion (Injectafer) $11,625 (2018-2024) Consulting (34%) Very High
BHANGOO, MUNVEER MD La Jolla 100,420 2,418 Pembrolizumab injection (Keytruda) $719,794 (2018-2024) Consulting (67%) Very High
BANERJEE, PUSHPENDU M.D. La Jolla 99,278 2,400 Iron infusion (Injectafer) $35,466 (2018-2024) Honoraria (34%) Very High
BAHADINI, BAHAREH MD Thousand Oaks 92,028 1,441 Filgrastim injection (Zarxio) for white blood cells $2,949 (2018-2024) Food & Beverage (85%) Very High
SANANI, SHAMEL MD Mission Hills 77,204 1,236 Darbepoetin injection (Aranesp) for anemia $3,495 (2018-2023) Food & Beverage (92%) Very High
GE, LI MD Fresno 67,087 3,016 Paclitaxel chemotherapy injection $15,918 (2018-2024) Consulting (48%) Very High
MOSALLAEI-BENJAMIN, MAHSHID M.D. Los Angeles 53,667 2,196 Iron infusion (Feraheme) $211 (2018-2022) Food & Beverage (88%) Very High
DORAISWAMY, ACHALA MD Murrieta 53,423 1,242 Iron infusion (Injectafer) $14,988 (2018-2024) Food & Beverage (87%) Very High
SONG, SEUNG-YIL M.D. San Diego 52,756 2,286 Filgrastim injection (Nivestym) for white blood cells $25,168 (2018-2024) Food & Beverage (87%) Very High
SHEH, BRYANT MD Stanford 48,751 1,838 Pembrolizumab injection (Keytruda) $336 (2018-2024) Food & Beverage (52%) Very High
KASHYAP, ASHWIN M.D. Thousand Oaks 45,851 1,430 Darbepoetin injection (Aranesp) for anemia $4,870 (2018-2024) Food & Beverage (94%) Very High
SHAH, ARPEET M.D. Castro Valley 44,866 1,228 Iron infusion (Injectafer) $567 (2021-2024) Food & Beverage (100%) Very High
PUDUNAGAR SUBBIAH, SHANMUGA MD Upland 34,939 1,467 Iron infusion (Injectafer) $89,187 (2018-2024) Consulting (41%) Very High
EL-HAJJAOUI, MICHELLE DO West Covina 34,022 929 Iron infusion (Injectafer) $3,888 (2018-2024) Food & Beverage (85%) Very High
BAWEJA, ABINAV MD Pleasanton 28,670 2,180 Anti-nausea injection (fosaprepitant) $2,495 (2020-2024) Food & Beverage (97%) Very High
PHILLIPS, TANYANIKA MD Lancaster 24,847 1,094 Pembrolizumab injection (Keytruda) $999 (2018-2022) Food & Beverage (93%) Very High
KIM, KEVIN M.D. San Francisco 21,528 633 Pembrolizumab injection (Keytruda) $169,279 (2018-2024) Consulting (70%) Very High
SIDDIQUE, NAYYAR MD Oceanside 21,286 863 Epoetin alfa injection (Retacrit) for anemia $23,755 (2018-2024) Consulting (51%) Very High
MARSHALL, NATALIE M.D. Berkeley 20,487 1,025 Anti-nausea injection (aprepitant) $4,966 (2018-2022) Food & Beverage (94%) Very High
COLOCCI, NATALIA MD Palo Alto 18,316 1,177 Vedolizumab infusion (Entyvio) $524 (2018-2024) Food & Beverage (50%) Very High
MELKONIAN, SUZY MD Chatsworth 15,805 338 Iron infusion (Injectafer) $19,334 (2018-2024) Food & Beverage (92%) Very High
BOLLIN, KATHRYN M.D. San Diego 15,634 632 Pembrolizumab injection (Keytruda) $8,163 (2018-2024) Food & Beverage (98%) Very High
KRAMER, ALAN MD San Francisco 12,081 919 Denosumab injection (Prolia/Xgeva) $9,581 (2018-2024) Food & Beverage (96%) Very High
KHAN, NAVEED MD Glendora 10,632 915 Anti-nausea injection (aprepitant) $2,891 (2018-2024) Food & Beverage (86%) Very High
CHAN, DAVID MD Torrance 9,586 1,248 Injection, heparin sodium, (heparin lock flush), per 10 units $3,965 (2018-2024) Gift (76%) Very High
COHEN, MELISSA M.D. Simi Valley 7,594 1,250 Denosumab injection (Prolia/Xgeva) $2,581 (2018-2024) Device Loan (67%) Very High
PENN, JULIET M.D. Santa Barbara 7,458 799 Anti-nausea injection (fosaprepitant) $3,620 (2018-2024) Food & Beverage (96%) Very High
WANG, WEI MD, PHD San Francisco 6,124 431 Denosumab injection (Prolia/Xgeva) $6,823 (2018-2024) Food & Beverage (79%) Very High
SMITH, GARRETT M.D. San Francisco 5,593 571 Denosumab injection (Prolia/Xgeva) $135 (2020-2024) Food & Beverage (63%) Very High
SPILLANE, THOMAS MD San Luis Obispo 2,671 1,350 Office visit, established patient (30-39 min) $54,230 (2018-2024) Food & Beverage (53%) Very High
SANKHALA, KAMLESH M.D. Beverly Hills 2,627 540 Dexamethasone injection (steroid) $139,567 (2018-2024) Consulting (34%) Very High
AFRASIABI, KAMBIZ M.D. Anaheim 2,429 328 Hospital follow-up visit, high complexity $3,359 (2018-2024) Food & Beverage (97%) Very High
SINGHAL, SHIVA Mountain View 2,282 692 Office visit, established patient, complex (40-54 min) $698 (2018-2024) Food & Beverage (100%) Very High
NGUYEN, MINH MD Newport Beach 2,275 952 Office visit, established patient (30-39 min) $1,993 (2018-2024) Food & Beverage (74%) Very High
KLARNET, JAY MD Oxnard 2,152 672 Office visit, established patient, complex (40-54 min) $7,742 (2018-2024) Food & Beverage (80%) Very High
ROMERO, RAYMUNDO M.D. Glendale 2,148 475 Hospital follow-up visit, moderate complexity $35,252 (2018-2024) Food & Beverage (85%) Very High
ZHOU, MING MD Modesto 2,031 963 Office visit, established patient (30-39 min) $10,687 (2018-2024) Food & Beverage (91%) Very High
TCHEKMEDYIAN, NERSES M.D. Irvine 1,989 365 Denosumab injection (Prolia/Xgeva) $2,043 (2018-2021) Food & Beverage (99%) Very High
TIPTON, SHANE PA-C Stanford 1,867 1,038 Office visit, established patient (20-29 min) $291 (2021-2024) Food & Beverage (56%) Very High
CHEN, THOMAS MD San Jose 1,729 902 Office visit, established patient (30-39 min) $162 (2021-2024) Food & Beverage (91%) Very High
MOHAMMADI, ORANUS MD Fresno 1,675 483 Anti-nausea injection (Aloxi/palonosetron) $5,902 (2019-2024) Food & Beverage (77%) Very High
RAJURKAR, SWAPNIL M.D. Upland 1,632 943 Office visit, established patient (30-39 min) $119,808 (2018-2024) Consulting (74%) Very High
JIANG, FEN MD Mission Viejo 1,440 707 Complete blood count (CBC) with differential $22,013 (2018-2024) Consulting (39%) Very High
PARK, DAVID M.D. Fullerton 1,424 745 Office visit, established patient (30-39 min) $75,973 (2018-2024) Consulting (62%) Very High
QUOCK, JUSTIN M.D., F.A.C.P. San Francisco 1,401 646 Complete blood count (CBC) with differential $491 (2018-2024) Food & Beverage (55%) Very High
Note: Medical Oncology encompasses multiple subspecialties with different practice patterns. Differences in payment amounts and procedure volumes may reflect subspecialty focus rather than practice quality. Consider viewing individual profiles for full context.
Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →