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Cancer Treatment Centers of America

Brett Mendel, MD


CTCA Atlanta

"I work closely with my patients and their families to provide education about the disease and treatment options, and I promote involvement and empowerment in a collaborative environment."

- Brett Mendel, MD

Medical degree

  • Emory University School of Medicine, Atlanta, Georgia

Internship / Residency

  • Internal Medicine - Emory University School of Medicine, Atlanta, Georgia


  • Board Certified, Internal Medicine and Gastroenterology - American Board of Internal Medicine


  • Gastroenterology - Emory University School of Medicine, Atlanta, Georgia

Practicing since: 2017

Dr. Brett Mendel, Gastroenterologist at Cancer Treatment Centers of America® (CTCA), understands the uncertainty and concerns that cancer patients face. “It is a privilege to help cancer patients and to take time to answer all the questions they may have,” says Dr. Mendel.

In August 2018, Dr. Mendel joined CTCA® Atlanta, helping diagnose and stage gastrointestinal tract cancers. Dr. Mendel also partners with medical oncologists to help patients with other cancer types address common digestive side effects, such as diarrhea, vomiting and constipation.

“I was drawn to CTCA because of its distinctive approach to patient-centered care,” says Dr. Mendel. “I have the opportunity to truly get to know my patients and work collaboratively to decide on a treatment plan unique to them and their cancer.”

Dr. Mendel is a graduate of Washington University in St. Louis, Missouri, where he received a bachelor’s degree in chemistry. He received his medical degree from the Emory University School of Medicine in Atlanta, Georgia. While there, he was awarded a Howard Hughes Medical Institute Research Fellowship and spent a year studying immunology at the Emory Transplant Center. Dr. Mendel completed his internship and residency in internal medicine at the same university, as well as a fellowship in gastroenterology. During that time, he also served as a research fellow for Emory’s Division of Digestive Diseases, where he focused on immune function in the liver for the university’s vaccine and transplant centers.

Dr. Mendel is a frequent presenter at national conferences, including the American Association for the Study of Liver Diseases’ annual meeting and the American College of Gastroenterology. He has been published in the American Journal of Transplantation and has co-authored a textbook chapter on liver disease in a physician review guide for the gastroenterology board exam. Dr. Mendel is board certified in internal medicine and gastroenterology by the American Board of Internal Medicine.

Dr. Mendel joined Atlanta Gastroenterology Associates in 2017, as a full time gastroenterologist. He practices at CTCA on a part-time basis as part of a collaborative partnership.

Patient ratings and comments

Star ratings and comments are only available for medical, radiation and gynecologic oncologists. Gynecologic surgical offerings are not included at this time due to a different survey tool required to evaluate these services. CTCA uses a validated Press Ganey® survey, which captures patient experience feedback for the primary oncology services of chemotherapy and radiation therapy. Following industry best practice, star ratings and comments are only published for physicians with a minimum of 30 completed patient surveys.

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