Board of Directors

Thomas C. Dickerson, Ed.D., FACHE

Clinical Radiologists, S.C.
3800 East Lake Centre Dr Ste 100
Quincy, IL 62305
(217) 222-9302
Dr. Dickerson has over 30 years of healthcare experience and has served as the Chief Executive Officer for Clinical Radiologists, based in Springfield, Illinois, for the past 20 years.  In addition, he serves as the President for Professional Business Services of Central Illinois, Inc., a medical billing company specializing in radiology.  Tom earned his Doctoral Degree in Education from Creighton University, with an emphasis in Interdisciplinary Leadership.  He spent 10 years on his local community school board, serving six years in the capacity of President.  He has served on the RBMA Common Body of Knowledge Task Force, the Finance Committee, Payor Relations, and served a year as RBMA’s Treasurer.  Tom is board certified by the American College of Healthcare Executives and is an active member of his local Presbyterian Church; leading a contemporary worship band most weeks.  Tom enjoys guitar, vocals, and white tail deer hunting, as well as spoiling his soon to be five grandchildren.

Jim Hamilton, MHA, CMM, FRBMA

Medical Imaging Physicians
2591 Miamisburg Centerville Road
Dayton, OH 45459
(937) 433-7622
Jim Hamilton is the administrator and business manager for Medical Imaging Physicians, Inc., an 18 radiologist practice in Dayton, OH. In his over 32 years in radiology, Jim has managed hospital-based practices and imaging centers and was the CEO of his own billing company. Jim has served on the RBMA Board of Directors previously as well as on numerous RBMA committees. In addition, he is an active member of the Professional Association of Health Care Office Managers and Chairman of The Breast Cancer Foundation.

Christie James, MS, FRBMA

Massachusetts General Physicians Org.
Affiliate of Massachusetts General Hospital
62 13th St.
Charlestown, MA  02129
(617) 724-4106
Christie has worked with Massachusetts General Hospital and Partners Healthcare in Boston, MA for over 15 years as the Sr. Manager of the radiology professional revenue cycle.  Christie brings over 27 years of radiology practice and revenue cycle management leadership experience, which includes working for academic and private radiology practices. Her experience can assist in providing the board the leadership and knowledge in meeting the goals of RBMA’s strategic plan and managing the current issues challenging our industry today and is looking to  providing the membership with the tools to manage and prepare their practices and billing services successfully when confronting these challenges. Christie has held many positions within the RBMA which include past-president of RBMA New England Chapter, past-chair of the RBMA Programs Committee and past chair of the Payor Relations Committee.

Sarah Mountford, RCC, CPC, FRBMA

Zotec Partners
11460 Meridian St., Suite 200
Carmel, IN 46032
(816) 308-0905
Sarah is the client services manager for Zotec Partners. She has over 15 years in radiology billing and practice management. She has spoken extensively on health care reform and billing performance improvement at RBMA and AHRA meetings. Her health care reform session from the 2012 AHRA annual meeting was featured on the the Aunt Minnie and Health Imaging websites. She is dedicated to finding innovative solutions to the problems that radiology practices face.

Michael Langenberg, CPA

Association of Univ. Radiologists, PC
5401 Kingston Pike, Suite 540
Knoxville, TN  37919
(865) 584-7376
Michael has spent his entire professional career working on the business side of radiology. He worked for both a national practice management company providing outsourced billing and practice management as well as a large radiology practice. His experiences include being an active part of successful group mergers, but also practice "fractures" whereby previously arranged mergers did not work. He has helped his present group negotiate various financial support arrangements with our hospitals including a Quality Based Incentive Payment as well as support for Subspecialty Services recruitment.  In addition to this first-hand practice experience, he has worked on both the RBMA Alternative Payment Models Task Force and Payor Relations Committee.

Mark O. Bernardy, MD, FACR

1031 Jimson Drive S.E.
Conyers, GA 30013-2064
(770) 860.8581
Mark Bernardy, MD, has been involved in ACR economic activities for many years, and currently serves on the Coding and Nomenclature committee and chairs the Managed Care committee. He is a past president of the Georgia Radiological Society and serves on their board and is treasurer of GRADPAC, their statewide PAC.


Tim Barrett, CPA

Radiology Associates, LLC.
8230 Summa Ave., Ste C
Baton Rouge, LA 70809
(225) 757-0552
Tim Barrett, CPA has 34 years of business management experience and successfully guided his practice’s growth from 12 to 29 physicians and mid-levels. He has facilitated a merger, instituted a number of new business programs and expansions, and has led a small administrative team in analyzing and evaluating opportunities to assist partners in making the best decisions for the practice. Tim spearheaded and is president of the RBMA Delta States Chapter and was the recipient of the 2015 RBMA Calhoun Award. He currently serves as the treasurer for the Louisiana chapter of MGMA and on the board of the Baton Rouge chapter of MGMA. He is active in Louisiana legislative health care advocacy matters and function in a national legislative liaison role.

Michael Gonzales, FRBMA
PBS West
12 Laguna Bluffs Court
Elk Grove, CA  95758
(916) 416-3208
Mike Gonzales serves as the Director of Client Relations for PBS West. Prior to joining PBS, he spent 16 years as the Revenue Cycle Director for Radiological Associates of Sacramento (RAS), then Regional Revenue Cycle Manager for Sutter Medical Foundation. He has been a member of RBMA since 1998, previously serving on the RBMA Board in 2009-11; California Chapter president in 2010-12, along with numerous committees including Data Collection, Payor Relations, Managed Care, Alternate Payment Models, Chapter Committee and is currently the Bylaws Committee Chair. He has spoken numerous times at RBMA meetings on improving radiology revenue cycle management. He holds an undergraduate degree in Organizational Leadership from Biola University.

Thomas Greeson, JD, MBA, FRBMA
Reed Smith LLP (Life Sciences Health Industry Group)
Radiology & Diagnostic Imaging
7900 Tysons One Place, Suite 500
McLean, VA 22102
(703) 641-4242
Thomas W. Greeson is a partner in the Tysons office of Reed Smith LLP in Northern Virginia. His law practice focuses on the regulatory and transactional needs of diagnostic radiologists and imaging centers nationally. Prior to entering private practice, Tom served as general counsel to the American College of Radiology. Tom is a Fellow of the RBMA and a recipient of the RBMA’s Calhoun Award and President's Award. He is a current Board member; the corporate secretary of Neighborhood Health, a Federally Qualified Health Center serving patients in Northern Virginia; and a member of NOVABIZPAC, the political action committee of the Northern Virginia Chamber of Commerce. He is also past president and current Board member of the Democratic Business Council of Northern Virginia. He earned an MBA at the Terry School of Business of the University of Georgia and is an honors graduate of Chicago-Kent College of Law.

Carol A. Hamilton, MBA, FACMPE, SPHR, SHRM-SCP
West County Radiological Group, Inc.
11475 Olde Cabin Rd., Ste 200
St. Louis, MO 63141
(314) 991-8201
Carol Hamilton, MBA, FACMPE, SPHR, SHRM-SCP has been in radiology management for a small imaging center and then a large hospital-based practice. She hold an expertise in human resources and has participated on the Membership Committee and is current chair of the Educational Materials and Products Committee. She was largely responsible for the launch of RBMA U and is a faculty member for Radiology Business 101.

Jennifer Kroken, MBA
Healthcare Resource Providers
414 Kirkwood Drive
Lewisville, TX  75067
(817) 403-3355
Jennifer has been active in the RBMA as a committee member, chair, speaker, and frequent contributor to the RBMA Bulletin since 2001. She was also a member of the editorial team that authored the HIPAA Implementation Toolkit. Her experience in radiology covers a wide range of administrative areas within a radiology practice, including compliance, physician licensing, credentialing, billing, collections and as a consultant, where she served as operations manager for a 20 plus sub-specialty radiology group in Dallas, Texas. She specializes in revenue cycle management, process improvement and untangling complex billing problems.

Charles McRae, MBA
Chief Executive Officer
Columbus Radiology Corporation
471 E. Broad St., Suite 1400
Columbus, OH 43215
(614) 221-3303
Charles McRae is chief executive officer of Columbus Radiology. Founded in 1946, Columbus Radiology is the largest and fastest growing radiology practice in Ohio. He has held the position with CRC since 2011 and has led the practice through a reorganization of its governance and operational structure that prepared the practice to successfully grow by over 300 percent. Most recently, Charles played a key role in joining CRC with Radiology Partners, the fastest-growing and largest on-site physician-led radiology practice in the United States.  
Charles is a leader in the RBMA, having served on the Board of Directors, multiple committees, as president of the Tennessee Radiology Business Management Association and chair of the RBMA’s Radiology Integrated Models Task Force. Charles is a member of the ACR Radiology Integrated Care Network and is a frequent lecturer at many of the events held by the RBMA and ACR/RBMA.
Charles earned his MBA at the University of Tennessee, Knoxville, Haslam College of Business and previously served as chief financial officer and practice administrator at Vista Radiology in Knoxville, Tenn. He played football at the University of Tennessee, earning multiple national and conference academic and athletic honors. He was the seventh pick of the first round and the first offensive player selected in the 1991 NFL Draft and enjoyed a six-year career in the NFL. In 2015, Charles was elected to the Greater Knoxville Sports Hall of Fame.

Shannon Wilson
Marketing and Business Development Manager
Bay Medical Management
2125 Oak Grove Road, Suite 200
Walnut Creek, CA 94598
(925) 296-7152
Shannon Wilson has 18 collective years of management experience while dedicating the past nine years to radiology marketing for Bay Imaging Consultants Medical Group in the Bay Area. She specializes in physician and hospital relations and business development. Shannon is the co-chair of the RBMA Programs Committee as well as a member of the Communications Committee. In the recent past, Shannon has served as chair of the Marketing Committee and enjoyed volunteering as a committee member for four years, and has been honored to speak at the Building Better Radiology Marketing Programs seminar on several occasions. As part of her civic duties Shannon volunteers for the San Francisco Bay Radiological Society, where she is the executive director.