C. G. Jung Institute of Chicago
- Non-profit center utilizing the principles of analytical psychology. Provides information on educational programs, clinical services, and cultural resources. Membership information on Chicago Society of Jungian Analysts (CSJA).
- http://www.jungchicago.org/

Chicago Society of Gastroenterology Nurses and Associates
- Offers meeting and event schedule, scholarship information, election news, photo gallery, and survey.
- http://www.csgna.net/

Chicago Pathology Society
- Seeks to advance the understanding of disease, with special reference to pathology. Offers support, networking, an events calendar, activities, and resources for pathologists and those interested in human pathology.
- http://www.chicagopathology.org/

Center for Study of Multiple Birth, The
- Recognized internationally as a unique resource for research and information about the causes, effects and problems of multifetal pregnancy.
- http://www.multiplebirth.com/

Chicago Radiological Society
- Information about the meetings and activities, officers, and history of this society, a branch of the Illinois Radiological Society.
- http://www.chi-rad-soc.org/