The Centers for Medicare and Medicaid Services (CMS) has designated RadSite as an official accrediting body for diagnostic imaging. RadSite is the most innovative and cost-effective choice for accreditation—with dynamic solutions that can take you into the future of healthcare.

A Trusted Partner—

With a Track Record of Proven Quality.


In 2005, RadSite began its assessment program to promote quality and reduce the cost of diagnostic imaging.


In 2013, after rigorous demonstration of its commitment to quality standards, RadSite was designated by the Centers for Medicare and Medicare Services (CMS) as the newest accrediting organization under the Medicare Improvements for Patients and Providers Act of 2008 (MIPPA).

Expert Leadership

Garry Carneal, JD, MA

President & CEO

As president and CEO, Mr Carneal oversees the operations at RadSite since 2010.  During his tenure, he has supervised the development of RadSite’s premier accreditation program, the MIPPA Accreditation Program for advanced diagnostic imaging.  He also is coordinating the development of several new accreditation programs and launching several strategic initiatives to optimize quality-based imaging.

Mr. Carneal has researched, written, and published extensively on quality, medical management, information technology, and regulatory trends. During his career, Mr. Carneal has brought to market 25 accreditation programs that have been recognized by 45 states and three federal agencies.  Among other contributions, he has developed accreditation programs in managed care, population health and telemedicine.  During his career, he has worked with five nationally known accreditation agencies.  He also has held several legal and government relation positions with firms including the National Association of Insurance Commissioners, the American Association of Health Plans (now AHIP) and The Kennedy Forum.  Mr. Carneal received an undergraduate degree from Washington & Lee University, a master’s degree from Yale University, and a law degree from the University of Virginia.

Eliot Siegel, MD

Chief Strategy Officer

As Chief Strategy Officer and Standards Committee Chair, Dr. Siegel helps oversees RadSite’s standards development activities and product development initiatives.  He also provides guidance for RadSite’s accreditation programs and research initiatives.

Dr. Siegel is an internationally recognized radiologist who serves as professor and vice chair at the University of Maryland School of Medicine, Department of Diagnostic Radiology, as well as chief of Radiology and Nuclear Medicine for the Veterans Affairs Maryland Healthcare System, both in Baltimore, MD.

Dr. Siegel has written more than 200 articles and book chapters about PACS (Picture Archiving and Communication Systems) and digital imaging, and has edited six books on the subject, including Filmless Radiology and Security Issues in the Digital Medical Enterprise. He has presented more than 1,000 times worldwide on a broad range of topics involving the use of computers in medicine. He was named Researcher of the Year, Educator of the Year, and received multiple awards for innovation, including the Smithsonian Award.

Mark Casner RadSite

Mark Casner, MA, MBA, FACHE

Chair, Accreditation Committee

As Chair of the RadSite Accreditation Committee, Mr. Casner oversees the review and final decision of each application for accreditation. He also serves on RadSite’s Board of Directors and provides strategic guidance to the organization. He also serves as an accreditation auditor.

Mr. Casner brings more than forty years of health care experience to RadSite. He has served in senior leadership roles throughout his career including both public and private companies. Since 1993, Mr. Casner has been involved in the medical imaging space in a variety of settings, managing multiple facilities across the entire country. His expertise includes both fixed and mobile settings as well as a medical device company. Mr. Casner holds a BA from Miami University of Ohio, a MA from the University of Maryland, and an MBA from Marymount University. He is also a Fellow of the American College of Health Care Executives.

Phillip W. Patton, PhD, CHP, DABR, DABSNM

Chief Physics Officer

As chief physics officer, Dr. Patton oversees the technical requirements associated with RadSite’s accreditation programs.  Since 2012, he has helped develop and implement RadSite’s physics testing requirements associated with CT, MRI and nuclear medicine modalities.

Phillip W. Patton has conducted research in a wide variety of medical imaging and cancer treatment projects. His early work involved modeling and exploring improved methods of imaging and treating cancer in the skeleton. His efforts were responsible for improvements in the Monte Carlo modeling code for radiation transport and measured doses to bone and bone marrow to validate the modeling effort. Dr. Patton also worked extensively to model and develop experimental measurements for doses received during high energy X-ray interrogation of cargo containers for Homeland Security applications. He devised a unique combination of radiation measurements in air with human-simulating phantoms embedded with TLDs. President and CEO of LBT Radiation Physics Consulting, Ltd., Dr. Patton is a Certified Health Physicist (2006), a Diplomat of the American Board of Radiology (2009), a Diplomat of the American Board of Science in Nuclear Medicine (2011), and a Licensed Medical Physicist. He was a professor of health physics at UNLV from 2000 – 2011. Dr. Patton’s work has been published in such professional journals as Health Physics, Radiation Protection Dosimetry, the Journal of Nuclear Medicine, and Medical Physics.

Patrick D. Browning, MD, MA, MSL

Chief Medical Officer

As chief medical officer, Dr. Browning oversee and promote the integrity of all quality-based programs and research initiatives for RadSite. Among other contributions, he serves as a resource to RadSite’s Standards and Accreditation Committees to optimize patient-safety and evidence-based imaging protocols.

Dr. Browning attended University of California Davis for his undergraduate studies in medieval history and earned a master’s degree in the history of medicine from University of California San Francisco. He then returned to UC Davis where he completed medical school and his residency in radiology. He continued to pursue his passion for radiology and completed his fellowship with Stanford University Medical Center in body imaging. Dr. Browning led the creation of the Division of Medical Imaging for a portion of Sutter Health, has co-authored over a dozen peer-reviewed articles, and given numerous lectures and presentations in the U.S. and Europe. Dr. Browning also remains in active practice as the Northern California Medical Director for Open Imaging. He also has served as the CMO for two successful automated detection and artificial intelligence startups and in a senior leadership position with Magellan Health.

Julie Irons, HIA, HCSA

Manager of Accreditation

As manager of accreditation, Ms. Irons manages all aspects of the applicant’s experience from initial contact to application set-up, review, and the awarding of the accreditation.  Ms. Irons also manages RadSite’s Accreditation Committee, which oversees the review and approval of all MAP applicants.  Ms. Irons came to RadSite with 20 years of experience as an account and education manager at URAC, a nationally recognized healthcare accrediting body.

Ms. Irons earned the Health Insurance Associate (HIA) and the Healthcare Customer Service Associate (HCSA) credentials through the America’s Health Insurance Plan (AHIP) Insurance Education programs.

RadSite’s MIPPA Accreditation Program (MAP) is a detailed process for ADI imaging modalities and requires thorough documentation and verification of facilities and licensure.


What’s Next?

Can accreditation be real-time? Can it be value-based? What about a performance dashboard? These are the questions now surfacing, and CMS is actively seeking ideas on making standards more meaningful.

RadSite has the experience and the forward-thinking strategy to drive these kinds of innovations. Our position papers, our contributions to governing bodies, our advocacy and outreach—these efforts distinguish RadSite as a thought-leader in the industry. It’s accreditation reinvented.

To learn more about RadSite’s innovations in quality and accreditation services, contact us.

Contact us today