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California · Hematology & Oncology

Hematology & Oncology in California.

1,906 verified Hematology & Oncology providers practise in California according to the National Plan and Provider Enumeration System (NPPES). Browse by city below, or click any provider to view their full NPI record including taxonomy, address, and contact details.

207RH0003X1,906 in California200 citiesRefreshed monthly
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Los Angeles173San Diego94Sacramento78Orange66San Francisco66La Jolla48Santa Monica46Torrance36Fresno36Stanford31Rancho Mirage28Fountain Valley26Newport Beach25Walnut Creek22Long Beach21Beverly Hills20Glendale18San Jose17Downey17Anaheim17Roseville17Santa Barbara17Oakland16Irvine16Huntington Beach15Burbank15Monterey15Modesto14Riverside14Pasadena14Santa Rosa14San Mateo13West Hollywood12Berkeley12Pleasant Hill12Bakersfield12Duarte12Mission Hills12Fremont12Arcadia12Laguna Hills12Vallejo12Mission Viejo11Chico11Chula Vista11Van Nuys11West Covina10Thousand Oaks10San Luis Obispo10Lakewood10Oxnard10West Hills10Pomona9Carmichael9Whittier9Santa Maria9Merced9Santa Cruz9Encino9Antioch9Fontana8Clovis8Cerritos8Santa Clara8Redding8South Pasadena8Los Alamitos8Loma Linda8Palm Springs8Palo Alto8Stockton7Santa Clarita7Corona7Encinitas7Valencia7Upland7Lancaster7Los Gatos7Northridge7Sunnyvale7Panorama City7Simi Valley7Redwood City6Concord6Santa Ana6San Leandro6Ventura6Bellflower6South San Francisco6Westlake Village6Auburn6Baldwin Park6San Bernardino6Oceanside6Mountain View6Hayward5Sylmar5Salinas5Alhambra5Victorville5Montebello5Martinez5Woodland Hills5Fullerton5Cameron Park5La Mesa5Escondido5Woodland4Travis Afb4Lompoc4Vista4Folsom4Eureka4El Centro4Napa4Dublin4Novato4Daly City4Oroville4Palmdale4Redondo Beach4Castro Valley4Vacaville4Hemet4Costa Mesa3Inglewood3Calabasas3Truckee3Visalia3Lynwood3Grass Valley3Turlock3San Rafael3Redlands3San Marcos3Harbor City3San Gabriel3Solvang3Monterey Park3Porter Ranch3El Segundo3Tarzana3Porterville3Jackson3Fairfield3Marysville3Yuba City2Arroyo Grande2Brawley2Burlingame2Camarillo2Campbell2Covina2Culver City2Gilroy2Greenbrae2La2La Canada2La Mirada2Laguna Beach2Lakeport2Marina Del Rey2Mather2Mill Valley2Moreno Valley2Murrieta2Petaluma2Pinole2Ridgecrest2Saint Helena2San Anselmo2San Ramon2Soquel2Temecula2Templeton2Rocklin1Rancho Santa Fe1Rancho Cucamonga1Seal Beach1Sebastopol1Sherman Oaks1Poway1Port Ranch1Sonora1Woodside1South Lake Tahoe1Pleasanton1Placentia1St. Helena1Paradise1Palos Verdes Estates1Pacific Palisades1Montecito1Montclair1Yorba Linda1Atascadero1Menlo Park1Manhattan Beach1Tracy1Lodi1

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Frequently asked · CaliforniaHematology & Oncology in California

As of the June 2026 NPPES snapshot, 1,906 providers with the Hematology & Oncology taxonomy are registered to a California practice address. Counts refresh monthly from the public CMS registry.

Open any provider's full NPI record to see their active status, taxonomy, and registered California practice address. For real-time confirmation, the authoritative source is the CMS NPPES public registry, which FindMyNPI mirrors and refreshes monthly.

Los Angeles (173), San Diego (94), Sacramento (78). Use the "Refine by city" panel above to open any city's full directory.