MOS Memberships


Regular Member (MOS)

Physician licensed and Board-eligible or Board-certified in internal medicine, pediatrics, surgery, gynecology, hematology, or oncology.

Group Membership (MOS)

Four physicians in a healthcare institution (healthcare or academic) or group practice who meet the requirements of Regular membership qualify for Group membership.

Group - Additional Physicians (MOS)

Additional physicians who meet the requirements may each join as part of the Group.

Group - Associate Membership (MOS)


Associate Affiliated (MOS)

Affiliated with Group members or Regular members.

Associate - Non-Affiliated (MOS)

Allied health professionals such as registered nurses, nurse practitioners, physician assistants, administrators, social workers, and office managers.

Fellow (MOS)

Physician participating in an approved oncology or hematology subspecialty training program.

Retired (MOS)

Physician meeting requirements to be a Regular member but is no longer practicing oncology or hematology.