Parkway Cardiology Associates
- Offers services at offices in Oak Ridge, Harriman, Wartburg, Oneida and Jellico. Describes physician qualifications, diagnostic and hospital services, insurance and billing policies, and other topics.
- http://www.pcaheart.com/

Arrhythmia Consultants, PC
- Private practice electrophysiologist, Dr. James Porterfield. Dedicated to research and clinical care of irregular heartbeats, located in Memphis, Tennessee and affiliated with the Methodist Hospital system.
- http://www.acmemphis.com