ABIM is a nonprofit organization that evaluates and certifies practicing physicians in various specialties, including hematology.

510 Walnut Street, Suite 1700
Philadelphia, PA 19106-3699
Tel: (800) 441-2246
Fax: (215) 446-3590
http://www.abim.org

The AMA has a mission to promote the art and science of medicine and the betterment of public health. Visit its Web site for information on education and careers.

330 North Wabash Avenue
Chicago, IL 60611-5885
Tel: (800) 621-8335
Tel: (312) 464-4782
http://www.ama-assn.org

For information on education and careers, contact

142 East Ontario Street
Chicago, IL 60611-2864
Tel: (800) 621-1773
http://www.osteopathic.org

The ASH has a mission to understand, diagnose, treat, and prevent disorders that affect the blood.

2021 L Street, NW, Suite 900
Washington, DC 20036-4929
Tel: (866) 828-1231
Tel: (202) 776-0544
Fax: (202) 776-0545
http://www.hematology.org

Founded in 1876, the AAMC is a not-for-profit organization that represents accredited medical schools, teaching hospitals, and health systems.

655 K Street, NW, Suite 100
Washington, DC 20001-2399
Tel: (202) 828-0400
http://www.aamc.org