Cancer Treatment Centers of America

Hannah Do, MD

Gastroenterologist & Medical Director of Total Parenteral Nutritional Services

Eastern Regional Medical Center

"Every patient has their own beliefs and values, and I take these into consideration as we work together toward achieving optimal treatment outcomes."

- Hannah Do, MD
Hannah Do, MD

Medical Degree

  • Doctor of Medicine – Thomas Jefferson College of Medicine, Philadelphia, PA

Internship / Residency

  • Internal Medicine Residency – Yale University Medical School, New Haven, CT

Additional Degree(s)

  • Bachelor of Science in Biology - University of the Sciences, Philadelphia, PA


  • Internal Medicine – American Board of Internal Medicine (Diplomat)
  • Gastroenterology- American Board of Internal Medicine (Diplomat)


  • Gastroenterology Fellowship - University of Southern California, Los Angeles, CA

Practicing Since: 2013

“I am inspired by the passion of my colleagues here,” says Dr. Hannah Do, Gastroenterologist and Medical Director of Total Parenteral Nutritional Services at Cancer Treatment Centers of America® (CTCA) in Philadelphia. “We are dedicated to treating our patients as we would our own family members.”

After studying biology at University of the Sciences in Philadelphia, Dr. Do completed her Doctor of Medicine at Thomas Jefferson College of Medicine. Her postgraduate training began with a three-year residency with the Internal Medicine Residency Program at Yale New Haven Hospital. She also completed a three-year fellowship in gastroenterology at the University of Southern California. Dr. Do has conducted several research studies and publications in her specialty field, including work on hepatocellular carcinoma, drug-induced liver injury, and iron-deficiency anemia in patients with cirrhosis.

Dedicated to a career in health care since her undergraduate education, Dr. Do’s early work experience included a university pharmacy internship, a medical receptionist, and a medical assistant at a private otolaryngology practice. She has also offered her time as a volunteer providing medical care at homeless shelters and with Unite for Sight, which promotes access to optometry and vision screening. She also served as a mentor to internal medicine residents while at Yale New Haven Hospital.

Dr. Do joined CTCA® in July 2016. At CTCA, Dr. Do treats disorders of the gastrointestinal tract, with a special focus on colorectal, gastric, esophageal and liver cancers. She performs several endoscopic procedures, including colonoscopy, push enteroscopy, video capsule, esophagogastroduodenoscopy, esophageal dilations, cryospray, hemorrhoidal banding and PEG tube replacement. She keeps up to date with the latest advances that may be incorporated into the care of her patients.

Licensed by the State of Pennsylvania, Dr. Do is Board Certified in Internal Medicine by the American Board of Internal Medicine. She is a member of the American Gastroenterology Association, the American Society for Gastrointestinal Endoscopy, the American Association for Study of Liver Disease and the American College of Gastroenterology.

When she is not caring for patients, Dr. Do enjoys hiking, yoga and Frisbee golf. She speaks fluent Vietnamese and conversational Spanish.
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