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CTCA clinical leadership

The clinical leaders at Cancer Treatment Centers of America® (CTCA) are the visionaries who never stop searching for and providing powerful and innovative therapies to heal the whole person, improve quality of life and restore hope.

Eugene Ahn - Medical Director of Clinical Research & Hematologist/Oncologist

Eugene Ahn, MD

Enterprise Deputy Medical Director, Clinical Research

Jason Beland - Chair, CTCA Department of Radiology

Jason Beland, MD

Enterprise Chair Department of Radiology

Sean Cavanaugh - Director, CTCA Genitourinary Cancer Institute

Sean Cavanaugh, MD

Enterprise Chair Department of Radiation Oncology and Genitourinary Program Director

Anita Johnson - Breast Surgical Oncologist

Anita Johnson, MD, FACS

Enterprise Breast Program Director

Toufic Kachaamy - Medical Director of Interventional Gastroenterology (GI),  Endoscopy and Innovation, Gastroenterologist & Advanced Endoscopist

Toufic Kachaamy, MD

Interventional Program Specialist, Medical Director of Gastroenterology and Endoscopy, CTCA Phoenix

Arturo Bonilla

Arturo Loaiza-Bonilla, MD, MSEd, FACP

Enterprise Gastrointestinal Program Director, Medical Director of Clinical Research

Maurie Markman - Board Member and President, Medicine & Science

Maurie Markman

President, CTCA Medicine and Science

Jeffrey Metts - Chief of Medicine

Jeffrey A. Metts

Chief of Staff and Chief of Medicine, CTCA Atlanta

Nathan Neufeld - Chief, CTCA Division of Pain Management

Nathan Neufeld, DO

Enterprise Pain/Palliative Care Program Specialist

Julian Schink - Chief, CTCA Division of Gynecologic Oncology, Department of Surgery

Julian Schink, MD

Chief Medical Officer

Dr. Marnee Spierer Phoenix

Marnee Spierer, MD

Chief of Staff, CTCA Arizona

Bradford Tan - Chair Department of Pathology and Laboratory Medicine

Bradford Tan, MD

Chief of Staff, CTCA Chicago, Enterprise Chair, Department of Pathology & Laboratory Medicine

Learn more about CTCA

The modern era of cancer treatment is constantly evolving, with new breakthroughs and discoveries changing the course of care at a rapid clip. At CTCA, we’re committed to bringing our patients new advances in cancer treatments.

Target: Cancer

Cancer treatment is constantly evolving. So are we.

Search clinical trials

Knowledge is power

Learning the facts about patient experiences and survival rates may help you make more informed decisions about your care.

Get treatment results

Manage your side effects

Learn how integrative care may help.

Learn more