Mark W. McCord, MD.

Radiation Oncologist

Chief Medical Officer - Atlanta Oncology Associates & American Professional Associates. Dr. McCord is a member of the American Society for Therapeutic Radiology and Oncology, the American College of Radiology, the American Medical Association, the American Society of Clinical Oncology, and the Gilbert Fletcher Society.

Dr. McCord has been named one of Atlanta Magazine's Top Doctors for multiple years.

Sandra L. Gregory, MD

Radiation Oncologist

Dr. Gregory is an ABR Board Certified Radiation Oncologist, practicing in the Southeast region since 1996. She is a member of the American Society for Therapeutic Radiology and Oncology and a Clinical Assistant Professor at the Medical College of George in Radiation Oncology.

She has worked in hospitals and cancer treatment centers in major cities including Memphis, TN and the greater Atlanta area. Dr. Gregory has published articles in peer-reviewed journals and has presented her research findings at several national conferences.

She presently serves as a member of the Research Protocol team at Dekalb Medical Center, offering enrollment on breast and gynecological trials. 

Northside Hospital Cancer Institute Radiation Oncology Preston Ridge

Contact Information

3330 Preston Ridge Rd, Ste. 100
Alpharetta, Georgia 30005

Phone: 770-255-7500

Fax: 770-255-7501

Business Hours

Weekdays: 8am to 5pm
Saturday: Closed
Sunday: Closed