Radiation Oncology Exam Description

Physicians certifying in Radiation Oncology must successfully complete a computer-based (written) and oral examination. The oral component is taken after the candidate has passed the written examination.

Written Examination

The written certification examination consists of 200 multiple-choice items and is administered over a four-hour session. Each question has four potential responses, but only one correct answer. Each response to a question is scored as correct or not correct.

The outline below provides details of the subject areas (domains) covered on the examinations and the approximate number of items from each area. This domain listing is provided to help candidates prepare for the examination and is based on a comprehensive practice analysis of the key topics and knowledge in the specialty, as identified by practitioners, instructors, and other leaders in Radiation Oncology. Candidates should review this outline carefully and focus study on the areas listed. Each item on the examination is linked to a specific domain. The information in the outline is meant to serve as a study aid only and not as a guarantee of success in taking the examination.

Radiation Oncology Classification System

Subject Area # of Questions on Exam
1 Benign Diseases 3
2 Bone Marrow Transplants 1
3 Breast 11
4 Central Nervous System 9
5 Chemotherapy/Leukemia 2
6 Childhood Cancers 2
7 GI Tract –Colo-Rectal 10
8 GI Tract – Esophagus 6
9 GI Tract – Other Topics 4
10 Gynecologic Oncology – Cervix 8
11 Gynecologic Oncology – Endometrium 8
12 Gynecologic Oncology – Ovarian 3
13 Gynecologic Oncology – Other Topics 3
14 Head & Neck – Larynx 7
15 Head & Neck – Nasopharynx 7
16 Head & Neck – Oropharynx 7
17 Head & Neck – Other Topics 6
18 Hodgkin’s Lymphoma 7
19 Non-Hodgkin’s Lymphoma 7
20 Musculoskeletal System 5
21 Palliative Medicine 6
22 Physics 20
23 Radiobiology 14
24 Skin 5
25 Thorax – Lung 11
26 Thorax – Other Topics 6
27 Urology – Bladder 6
28 Urology – Kidney 3
29 Urology – Prostate 7
30 Urology – Testes 3
31 Urology – Other Topics 3

Radiation Oncology Examination Study References

A candidate should focus their examination preparation on the content provided in the examination blueprint. The reference list is not meant to be a list of comprehensive study materials but rather to aid candidates who may wish to prepare more in a specific area of the examination blueprint that they may not be as familiar with. You may wish to use the study materials to prepare for the written certification examination. All items appearing on examinations have been written based on the material presented in these study references.

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Examination Administration

Click here for ABPS Examination Schedule Information

Examination Results

Candidates will receive score reports indicating their pass/fail status on the written examination. Candidates who fail are provided a breakdown of their performance by subject content domains. ABPS sends examination results to candidates within 60 days of the last day of the administration window. Each examination is scored against predetermined standards of acceptable performance, utilizing modified Angoff procedures for establishing the minimum acceptable scores. A candidate who is successful in passing the written examination is then certified and attains Diplomate status within ABPS and AAPS.

Retaking Examinations

A candidate may take the written examination as many as three times to attain a passing score. Candidates who are not successful in passing the examination within the number of allowable attempts may reapply for certification by completing a new application and meeting all the eligibility requirements in effect at the time the new application is submitted.

Accommodations for Religious Reasons and Disabilities

Click here to see the complete policy for accommodations.

Oral Examination

Click here for a description of the Radiation Oncology Oral examination.



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June 10-15, 2022
Patient Care Is Our Priority

Medical organizations throughout North America understand that our rigorous certification standards prove that ABPS Diplomates are capable of delivering the best patient care possible.

I feel truly blessed and grateful to be an internal medicine board-certified diplomate with the American Board of Physician Specialties. Their ongoing, steadfast commitment to physician board(s) enhancement, forward focused vision, and tenacity is second to none. ABPS has become a recognized choice in Physician Board Certification.

Adam Rench, MD
Internal Medicine
To be the best, you must measure yourself against the best. Achieving Board Certification in Emergency Medicine by the ABPS gave me the opportunity to demonstrate mastery of the art of EM in an objective way. The high bar that ABPS sets for candidates to be allowed to take both the written and oral exam is a testament to ABPS's rigorous vetting of one's ability to practice Emergency Medicine at a high level. By maintaining these credentials, I've been able to instill confidence in my abilities at the department/employer level and ultimately with the patients that choose to seek emergency care at the facilities at which I practice.

Royce Mathew Joseph, MD
Emergency Medicine
The American Board of Physician Specialties has supported the entire field of Integrative Medicine in sponsoring our board. It has been so validating of the importance of prevention-oriented and holistic approaches to care while emphasizing the scientific basis of this specialty to have it recognized by ABPS. I am proud to have been one of the first groups to be board certified by ABPS in Integrative Medicine, leading the way for others committed to training in this specialty.

Myles Spar, MD
Integrative Medicine