Membership Demographics

  • ASTRO counts more than 10,000 radiation oncologists and professionals from other related occupations among its members.

    Other interesting membership facts

    • ASTRO has members on every continent (except Antarctica) and in 80 different countries.
    • ASTRO members are approximately 75 percent male and 25 percent female.
    • Approximately 60 percent of the members have their MD, another 12 percent have a PhD, and 5 percent have both. Another 5 percent have nursing certifications including RN, BSN and/or OCN.
    • The ASTRO Associate Member category includes members from all of the radiation oncology treatment team specialties: medical physicists, radiation biologists, medical dosimetrists, radiation therapists and oncology nurses.
    • ASTRO also counts a number of administrators, physician assistants, lawyers and other professionals among its members.
  • Membership Category Member Count*
    Active 4,532
    Affiliate 182
    Associate 2018
    Emeritus 957
    Honorary 29
    International 1,478
    International Member-in-Training 346
    Member-in-Training 667
    Total Members 10,209

     *As of April 4, 2017

    Occupation Member Count*
    Administrator 198
    Biologist 91
    Clinical Oncologist 77
    Diagnostic Radiologist 7
    Medical Dosimetrist 107
    Medical Oncologist 25
    Medical Physicist 1,824
    Nuclear Medicine Physician 2
    Nurse 127
    Nurse Practitioner 42
    Other 104
    Physician Assistant 12
    Radiation Oncologist 6,209
    Radiation Therapist/Technologist 116
    Resident/Fellow 1,033
    Surgical Oncologist 15
    Urologist 3
    Veterinarian 25
    Occupations Not Specified 192
    Total Members 10,209

    *As of April 4, 2017

    State
         Occupation
    Member Count*
    Alaska 13

         Administrator
         Nurse
         Radiation Oncologist   

    1
    1
    11

    Alabama  84

         Administrator
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    12
    62
    9

    Arkansas 40

         Administrator
         Biologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow
         Surgical Oncologist

    1
    2
    5
    30
    1
    1

    Arizona 160

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Veterinarian

    5
    1
    39
    1
    102
    2
    8
    1
     1

    California 855

         Administrator
         Biologist
         Clinical Oncologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Veterinarian

    16
    12
    1
    1
    6
    4
    191
    18
    1
    16
    490
    8
    88
    1
    2

    Colorado 123

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    3
    2
    22
    2
    2
    1
    1
    76
    2
    9
    3

    Connecticut 97

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    3
    2
    24
    1
    1
    53
    1
    12

    District of Columbia 27

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    5
    15
    7

    Delaware 27

         Administrator
         Medical Physicist
         Nurse
         Radiation Oncologist
         Resident/Fellow

    6
    7
    1
    12
    1

    Florida 528

         Administrator
         Biologist
         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    12
    2
    1
    11
    116
    5
    4
    8
    1
    333
    3
    31
    1

    Georgia 182

         Administrator
         Biologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Resident/Fellow
         Surgical Oncologist

    3
    1
    28
    3
    3
    4
    2
    120
    17
    1

    Guam 2

         Radiation Oncologist

    2

    Hawaii 25

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown 
         Radiation Oncologist

    1
    1
    3
    1
    1
    18

    Iowa 67

         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse Practitioner
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    1
    3
    13
    1
    38
    2
    9

    Idaho 19

         Medical Dosimetrist
         Radiation Oncologist
         Radiation Therapist/Technologist

    2
    16
    1

    Illinois 276

         Administrator
         Biologist
         Clinical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow
         Surgical Oncologist

    11
    2
    2
    49
    6
    3
    2
    176
    23
    1

    Indiana 130

         Administrator
         Biologist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    4
    1
    26
    3
    1
    86
    2
    6
    1

    Kansas 47

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    3
    2
    1
    8
    27
    1
    5

    Kentucky 75

         Biologist
         Medicala Physicist
         Nurse
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    1
    15
    5
    45
    1
    8

    Louisiana 68

         Medical Physicist
         Nurse Practitioner
         Radiation Oncologist

    18
    1
    49

    Massachusetts 300

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    9
    2
    4
    2
    57
    7
    3
    1
    165
    7
    40
    3

    Maryland 199

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    6
    12
    3
    1
    31
    3
    1
    3
    110
    3
    26

    Maine 21

         Administrator
         Medical Physicist
         Other/Unknown
         Radiation Oncologist

    1
    4
    1
    15

    Michigan 272

         Administrator
         Biologist
         Clinical Oncologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    6
    3
    1
    1
    1
    72
    7
    4
    138
    4
    35

    Minnesota 146

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Resident/Fellow
         Veterinarian

    3
    1
    3
    43
    1
    1
    1
    77
    15
    1

    Missouri 163

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    4
    1
    2
    37
    2
    1
    100
    1
    15

    Mississippi 41

         Administrator
         Medical Oncologist
         Medical Physicist
         Nurse Practitioner
         Radiation Oncologist
         Resident/Fellow

    1
    1
    10
    1
    27
    1

    Montana 21

         Medical Physicist
         Nurse
         Radiation Oncologist

    1
    1
    19

    North Carolina 255

         Administrator
         Biologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Physicist
         Nurse Practitioner
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    3
    2
    1
    1
    57
    3
    4
    1
    151
    1
    28
    3

    North Dakota 19

         Medical Physicist
         Radiation Oncologist

    7
    12

    Nebraska 36

         Administrator
         Biologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    9
    22
    3

    New Hampshire 28

         Medical Physicist
         Radiation Oncologist

    7
    21

    New Jersey 204

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    6
    2
    1
    1
    59
    5
    1
    2
    117
    3
    7

    New Mexico 38

         Administrator
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist

    3
    8
    1
    1
    25

    Nevada     49

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Radiation Oncologist

    1
    1
    9
    38

    New York 545

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unkown
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Veterinarian

    15
    6
    10
    109
    4
    4
    4
    1
    291
    11
    83
    2
    5

    Ohio 283

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    6
    6
    2
    52
    5
    4
    5
    167
    4
    31
    1

    Oklahoma 54

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    1
    2
    9
    1
    1
    38
    2

    Oregon 89

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Radiation Oncologist
         Resident/Fellow

    1
    2
    1
    1
    13
    1
    1
    65
    4

    Pennsylvania 413

         Administrator
         Biologist
         Clinical Oncologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    8
    3
    1
    8
    1
    98
    9
    1
    6
    233
    5
    39
    1

    Puerto Rico 18

         Medical Physicist
         Radiation Oncologist

    3
    15

    Rhode Island 31

         Administrator
         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Radiation Oncologist

    1
    1
    1
    11
    1
    16

    South Carolina 85

         Administrator
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    1
    20
    58
    4

    South Dakota 21

         Medical Dosimetrist
         Medical Physicist
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Urologist

    2
    3
    1
    2
    11
    1
    1

    Tennessee 133

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    8
    3
    2
    22
    1
    3
    2
    81
    3
    8

    Texas 553

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Veterinarian

    13
    3
    14
    138
    13
    3
    3
    1
    293
    8
    58
    3
    3

    Utah 53

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Physician Assistant
         Radiation Oncologist
         Resident/Fellow

    1
    1
    9
    2
    1
    2
    31
    6

    Virginia 169

         Administrator
         Biologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist

    7
    1
    1
    37
    3
    5
    97
    3
    14
    1

    Virgin Islands 1
         Radiation Oncologist

    1

    Vermont 15

         Administrator
         Medical Dosimetrist
         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist

    1
    1
    4
    8
    1

    Washington 198

         Administrator
         Biologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    5
    1
    1
    2
    49
    4
    4
    123
    1
    7
    1

    Wisconsin 167

         Administrator
         Biologist
         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologists
         Resident/Fellow

    6
    2
    1
    5
    31
    2
    1
    7
    93
    4
    15

    West Virginia 31

         Administrator
         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist

    1
    6
    23
    1

    Wyoming 9

         Medical Physicist
         Nurse
         Radiation Oncologist

    2
    1
    6


    *As of April 4, 2017

    Country
        Occupation
    Member Count
    United States 7,538

         Administrator
         Biologist
         Clinical Oncologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Nurse Practitioner
         Other
         Physician Assistant
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Urologist
         Veterinarian

    189
    76
    7
    4
    98
    12
    1,613
    120
    41
    93
    12
    4,475
    84
    676
    11
    1
    26

    Albania 1

         Radiation Oncologist

    1

    Antigua and Barbuda 2

         Clinical Oncologist
         Radiation Oncologist

    1
    1
    Argentina 27

         Administrator
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    3
    22
    1

    Australia 138

         Administrator
         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Other/Unknown
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    1
    1
    1
    6
    1
    104
    10
    13
    1

    Austria 22

         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Veterinarian

    2
    17
    1
    1
    1

    Bahamas 2

         Clinical Oncologist
         Radiation Oncologist

    1
    1

    Barbados 1

         Radiation Oncologist

    1

    Belgium 48

         Medical Physicist
         Nurse
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    4
    1
    2
    37
    4

    Bolivia 1

         Radiation Oncologist

    1

    Botswana 1

         Clinical Oncologist

    1

    Brazil 126

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    6
    90
    30

    Bulgaria 4

         Radiation Oncologist
         Resident/Fellow

    2
    2

    Canada 405

         Administrator
         Biologist
         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Nurse Practitioner
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    3
    6
    1
    2
    60
    1
    245
    6
    81

    Chile 16

         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    1
    13
    2

    China 47

         Clinical Oncologist
         Medical Oncologist
         Medical Physicist
         Nurse
         Radiation Oncologist
         Resident/Fellow

    3
    1
    4
    2
    35
    2

    Colombia 11

         Clinical Oncologist
         Radiation Oncologist
         Resident/Fellow

    1
    7
    3

    Costa Rica 3

         Radiation Oncologist

    3

    Croatia 2

         Radiation Oncologist

    3

    Cyprus 4

         Medical Physicist
         Radiation Oncologist

    2
    2

    Czech Republic 5

         Radiation Oncologist

    5

    Denmark 13

         Administrator
         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    5
    5
    1

    Dominican Republic 4

         Radiation Oncologist

    4

    Ecuador 2

         Medical Physicist
         Radiation Oncologist

    1
    1

    Egypt 9

         Clinical Oncologist
         Radiation Oncologist
         Resident/Fellow

    4
    3
    2

    Estonia 1

         Radiation Oncologist

    1

    Finland 6

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist

    1
    1
    4

    France 39

         Medical Oncologist
         Radiation Oncologist
         Resident/Fellow
         Veterinarian

    1
    31
    6
    1

    Georgia 1

         Resident/Fellow

    1

    Germany 153

         Medical Oncologist
         Medical Physicist
         Nuclear Medicine Physician
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    1
    12
    1
    1
    1
    129
    9

    Ghana 4

         Clinical Oncologist
         Radiation Oncologist
         Resident/Fellow

    1
    2
    1

    Greece 8

         Radiation Oncologist

    8

    Guatemala 3

         Radiation Oncologist

    3

    Hong Kong 20

         Clinical Oncologist
         Medical Dosimetrist
         Medical Physicist
         Nurse
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    6
    2
    4
    1
    2
    1
    4

    India 85

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    2
    4
    61
    18

    Iran, Islamic Republic Of 3

         Clinical Oncologist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    1

    Iraq 2

         Radiation Oncologist
         Resident/Fellow

    1
    1

    Ireland 18

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    3
    13
    2

    Israel 27

         Biologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    2
    18
    6

    Italy 46

         Medical Oncologist
         Medical Physicist
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    1
    3
    3
    38
    1

    Jamaica 3

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist

    1
    1
    1

    Japan 354

         Biologist
         Clinical Oncologist
         Diagnostic Radiologist 
         Medical Oncologist
         Medical Physicist
         Nuclear Medicine Physician
         Other
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow
         Surgical Oncologist
         Urologist

    2
    10
    2
    3
    10
    1
    1
    276
    4
    40
    3
    2

    Jordan 2

         Resident/Fellow

    2

    Korea, Republic Of 53

         Biologist
         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    2
    7
    28
    15

    Lebanon 14

         Medical Physicist
         Other/Unknown
         Radiation Oncologist
         Resident/Fellow

    1
    1
    10
    2

    Lithuania 1

         Radiation Oncologist

    1

    Malaysia 4

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    1
    1

    Malta 2

         Resident/Fellow

    2

    Martinique 3

         Radiation Oncologist

    3

    Mexico 54

         Medical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    2
    2
    43
    7

    Morocco 1

         Resident/Fellow

    1

    Myanmar 3

         Radiation Oncologist

    3

    Netherlands 103

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    18
    82
    3

    Netherlands Antilles 1

         Radiation Oncologist

    1

    New Zealand 24

         Medical Dosimetrist
         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    1
    2
    14
    2
    4

    Nigeria 3

         Radiation Oncologist
         Resident/Fellow

    1
    2

    Norway 4

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist

    1
    2
    1

    Pakistan  4

         Radiation Oncologist
         Resident/Fellow

    3
    1

    Panama 3

         Radiation Oncologist

    3

    Peru 10

         Radiation Oncologist
         Resident/Fellow

    5
    5

    Philippines  22

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    3
    16
    2

    Poland 18

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    2
    13
    3

    Portugal 6

         Radiation Oncologist
         Resident/Fellow

    4
    2

    Puerto Rico 1

         Medical Physicist

    1

    Qatar 4

         Medical Physicist
         Radiation Oncologist

    2
    2

    Romania 5

         Radiation Oncologist
         Resident/Fellow

    2
    3

    Russia 2

         Medical Oncologist
         Radiation Oncologist

    1
    1

    Saudi Arabia 15

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist

    1
    3
    11

    Serbia 2

         Radiation Oncologist
         Resident/Fellow

    1

    Singapore 17

         Clinical Oncologist
         Medical Dosimetrist
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    1
    1
    9
    3
    3

    Slovakia 3

         Radiation Oncologist
         Surgical Oncologist

    2
    1

    South Africa 8

         Clinical Oncologist
         Radiation Oncologist
         Resident/Fellow

    3
    4
    1

    Spain 31

         Medical Oncologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    2
    19
    9

    Sweden 11

         Medical Physicist
         Other/Unknown
         Radiation Oncologist

    2
    1
    8

    Switzerland 39

         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    3
    33
    3

    Taiwan  59

         Administrator
         Biologist
         Medical Physicist
         Radiation Oncologist
         Resident/Fellow

    1
    1
    2
    42
    13

    Tanzania, United Republic Of  1

         Resident/Fellow

    1

    Thailand 11

         Radiation Oncologist
         Resident/Fellow

    8
    3

    Turkey 30

         Administrator
         Medical Physicist
         Radiation Oncologist

    1
    4
    25

    United Arab Emirates 2

         Radiation Oncologist

    2

    United Kingdom 89

         Clinical Oncologist
         Medical Physicist
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    22
    5
    35
    3
    24

    Uruguay 1

         Radiation Oncologist

    1

    Venezuala 6

         Medical Oncologist
         Medical Physicist
         Radiation Oncologist

    1
    1
    4
    1

    Vietnam 1

         Radiation Oncologist

    1

    Country Not Provided 145

         Administrator
         Biologist
         Clinical Oncologist
         Diagnostic Radiologist
         Medical Dosimetrist
         Medical Oncologist
         Medical Physicist
         Nurse
         Radiation Oncologist
         Radiation Therapist/Technologist
         Resident/Fellow

    1
    4
    2
    1
    1
    1
    15
    3
    104
    1
    12

    Total Members 10,209

    *As of April 4, 2017