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, Director of Integrative Oncology, 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

National Board of Advisors, President, Medicine and Science CTCA

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


Chevon M. Rariy, MD

Chair, CTCA Department of Virtual Health

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

Julian Schink, MD

Chief Medical Officer, CTCA Medicine & Science

Marnee Spierer - Chief of Staff & Chief of Radiation Oncology

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

CTCA Leadership

Our leadership team works together to make CTCA the home of healing and hope for cancer patients and caregivers today, while also helping to develop innovating and novel approaches to cancer treatment that further tomorrow’s advances.

CTCA Leadership

Our board and advisors

Our board and advisors are the visionaries who make CTCA the home of healing and hope for cancer patients and caregivers.

Our board and advisors

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.

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Knowledge is power

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

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Manage your side effects

Learn how integrative care may help.

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