Oncologists in California

44 verified oncologists clinicians are listed on Help Me Find A Doctor for California, sourced live from the federal NPPES NPI Registry. The list refreshes as clinicians are added, retire, or update their practice addresses.

Every California oncologists listing on this page shows the practice street address so you can sort by proximity to your home or workplace. For same-day needs, call the closest 2–3 offices first — many hold a handful of urgent slots each day. If nothing is available locally, expand to the state hub for California to see clinicians in neighboring metros.

Start by confirming the clinician's board certification and primary specialty on their profile, then compare their practice location, phone, and any patient reviews. Every California listing links to the NPPES record so you can verify credentials before booking. If you need a second opinion, browse related specialties on the same page.

Most major medical plans cover a oncologist visit when the referral is medically necessary; cosmetic or elective procedures are typically self-pay. Call the California office directly with your insurance card ready — front-desk staff can verify network status and any prior-authorization requirements before your appointment.

Medicare is widely accepted by California oncologists; Medicaid participation is narrower and depends on the specific California managed-care plan the office contracts with. Filter this page by insurance, or call the office and confirm both the payer and the exact plan (Medicare Advantage vs Original Medicare) before scheduling.

A first-visit oncologist consultation in California usually runs $150–$400 without insurance, depending on complexity and any imaging or diagnostics performed. In-network copays typically fall between $30 and $75. Many offices publish self-pay pricing on request.

Many California oncologists now offer telehealth for follow-ups, medication management, and second opinions. Look for the "Virtual care" badge on a profile, or open the California clinician's practice page — most list their telehealth booking link directly. The clinician must be licensed in California to see you when you're physically located in the state.

Same-day oncologists availability in California is tightest for high-demand subspecialties. Best options: call the largest 2–3 groups first (they carry more urgent slots), ask to be placed on the cancellation list, and check whether the practice offers a telehealth triage visit that can move you up the schedule for in-person follow-up.

Wait times for oncologists in California vary by subspecialty, insurance mix, and season. Routine new-patient visits typically book 2–6 weeks out; urgent referrals from a primary-care physician usually get scheduled faster. If wait times are long with your first choice, this page lists other California clinicians in the same specialty.

Referral requirements depend on your insurance, not the clinician. HMO plans in California usually require a primary-care referral first; PPO and most Medicare Advantage plans let you self-refer. Call the California office when you book — front-desk staff can confirm whether they need documentation from your PCP before your first visit.

Oncologists is a focused field: oncologists complete extra residency and often fellowship training in that specific area of medicine, and typically see patients on referral for conditions that need deeper expertise than a primary care visit provides. A primary care physician remains your day-to-day medical home and coordinates oncologists referrals when needed.