Find an oncologist near you
Oncologists diagnose and treat cancer with chemotherapy, immunotherapy and targeted drugs, and surgical and gynecologic oncologists operate on cancers.
Oncologists17,231Medicare-enrolled nationwide
States50with at least one oncologist
Most inCA3,013 in California
Per 100,000 people5.2U.S. average
Oncologists by state
Darker states have more oncologists for their population. Select a state to see its cities.
Oncologists per 100,000 residents
AK6.5
ME12.5
VT7.7
NH10.4
WA8.3
ID5.5
MT7.1
ND12.7
MN12.1
IL10.9
WI11.2
MI7.3
NY10.7
RI9.1
MA15.5
OR8.5
NV3.4
WY4.6
SD9.3
IA6.9
IN7.4
OH8.3
PA9.1
NJ11.4
CT9.6
CA7.7
UT6.2
CO8.2
NE6.9
MO8.6
KY6.3
WV7.1
VA7.9
MD10.9
DE8.3
AZ7.2
NM6.3
KS7.9
AR6.5
TN8.9
NC7.9
SC6
OK4.5
LA6.9
MS7.4
AL5.8
GA7.1
HI6.9
TX7.6
FL9
Cities with the most oncologists
Every state
Questions about oncologists
What does an oncologist do?
Oncologists diagnose and treat cancer with chemotherapy, immunotherapy and targeted drugs, and surgical and gynecologic oncologists operate on cancers.
How many oncologists are there in the U.S.?
17,231 oncologists are enrolled in Medicare according to CMS (data imported October 2026), about 5.2 for every 100,000 people. California has the most, with 3,013.
How do I find an oncologist near me?
Choose your state, then your city, to see every Medicare-enrolled oncologist practicing there with their address, phone number and hospital affiliations. If you have insurance other than Original Medicare, check the doctor is in your plan's network before booking.
Related specialties
Counts are distinct clinicians whose primary Medicare specialty is oncology; a clinician practicing in several cities appears in each city. Source: CMS Doctors and Clinicians national file, imported October 2026; population from the U.S. Census Bureau. About the data.