Arturo Loaiza-Bonilla,MD, MSEd, FACP


National GI Program Director & Medical Director of Clinical Research, CTCA

Arturo Bonilla

Our patient-centered approach is the common vision we all share to make each and every one of our patients feel part of our family.

CTCA Atlanta
Medical Oncology
Medical school:
Universidad Nacional de Colombia, Bogotá, Colombia
Residency, Internal Medicine - Harbor Hospital Center (MedStar Harbor Hospital), Johns Hopkins Hospital, Baltimore, MD
Internship, Internal Medicine - Harbor Hospital Center (MedStar Harbor Hospital), Johns Hopkins Hospital
Hematology and Oncology - Sylvester Comprehensive Cancer Center at University of Miami, Miller School of Medicine, Miami, FL
Advanced degrees:
Master of Science, Medical Education - University of Pennsylvania, Penn Graduate School of Education, Philadelphia 

Diplomate, American Board of Internal Medicine
Medical Oncology & Hematology - American Board of Internal Medicine

It was the compassionate, patient-centered approach to fighting cancer that attracted Dr. Arturo Loaiza-Bonilla to Cancer Treatment Centers of America® (CTCA). He joined CTCA® in May 2017, and is the National Gastrointestinal Program Director and Medical Director of Clinical Research for CTCA.

“At CTCA, our research department works closely with the pharmaceutical and diagnostic industries. This collaboration helps us deliver innovative technologies and novel treatment options to our patients,” says Dr. Loaiza-Bonilla. “Our clinical trials emphasize new targeted therapies, diagnostics, molecules and immunotherapy. Whenever possible, we incorporate these breakthroughs and technologies into treatment plans, tailored to each patient and their specific tumor type. This is personalized precision cancer treatment, the next dimension of cancer care.”

Board certified in medical oncology as well as hematology, Dr. Loaiza-Bonilla is dedicated to comprehensive care for patients suffering from gastrointestinal malignancies, such as colon, esophagus, gastric, liver, pancreas. Dr. Bonilla also has extensive experience in the diagnosis and treatment of neuroendocrine tumors (NETs).

Dr. Loaiza-Bonilla earned a medical degree from the Universidad Nacional de Colombia in Bogotá, Colombia. Following medical school, he completed an internship and residency in internal medicine at Harbor Hospital Center, Johns Hopkins Hospital in Baltimore, Maryland. Dr. Loaiza-Bonilla also completed a fellowship in hematology and oncology from the University of Miami, Miller School of Medicine in Miami, Florida.

Prior to joining CTCA, Dr. Bonilla was an assistant professor of clinical medicine for the GI and NET programs at the Perelman School of Medicine at the University of Pennsylvania. During this time, he completed his master’s degree in medical education at the same university.

Dr. Loaiza-Bonilla has been published in several medical journals and oncology publications. He is also a reviewer and counselor for several journals, special interest groups, panels and academic competitions. He has also served as principal investigator and co-investigator for many large oncology clinical trials, including extensive research into treatment options for NET patients. Dr. Loaiza-Bonilla has been a member and held leadership positions for several medical organizations. These include the Pennsylvania Society of Oncology and Hematology, American Society of Hematology, American Society of Clinical Oncology and American Association of Cancer Research. He's also been recognized as one of Castle Connolly's Top Doctors® many times, as recently as 2021.

In addition to his work, Dr. Loaiza-Bonilla is passionate about music. He was a tenor singing classical and baroque chorale music, including a long tenure at the Handel Choir of Baltimore. Outside CTCA, Dr. Loaiza-Bonilla enjoys golfing, skiing or reading. He and his spouse, a neurologist, enjoy time together traveling, exploring and dining. 

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