Leadership

Phillip Greene, M.D., President, CEO and Founder of NDI
Dr. Phillip Greene serves as President/CEO for NDI.                                                   

Phillip founded National Diagnostics, Inc. in 1990 to meet the network-based occupational healthcare needs of local, regional and national employers.   With more than 20 years of experience as a physician executive, he provides vision and strategic direction for NDI and its services.  Under his leadership, NDI has developed medical management and employment screening technologies to automate workplace processes and information management.

Phillip received his B.S. in Chemistry from the University of South Carolina and Doctor of Medicine from the Medical University of South Carolina.  He completed an internship in Family Medicine at Eastern Virginia Medical School in Norfolk, Virginia.   Phillip considered a legal career in medical jurisprudence and was accepted to Vanderbilt University Law School before ultimately continuing his medical career and becoming a health care entrepreneur. 

In the 1980's, Phillip worked in emergency medicine, then in clinical medicine as a practicing physician and medical director.   He established a clinic network providing family, geriatric and occupational healthcare services.  The clinic operations grew to 50,000 patient visits, annually, before they were acquired by a large regional hospital system in 1997.  Concurrent with clinical medicine, Phillip served for 13 years as Medical Director of Autumn Care Nursing Home and for several years as Medical Director of two Piedmont Mental Health Homes which provided community based housing and health care for children and young adults with physical and mental impairments.                          

Phillip founded National Diagnostics, Inc., while operating the clinics, in response to client needs for a managed solution for occupational health screening resulting from government workplace safety regulations enacted during the late 1980's.

Phillip served on the Credentialing and Legislative Committees with the American Association of Medical Review Officers during its early years. In that capacity, he assisted in developing the certification examinations that are used for Medical Review Officers today.  He is a member of North Carolina Medical Society, Mecklenburg County Medical Society and the American College of Occupational and Environmental Medicine.

Jerry Stewart, J.D., Executive Vice President and General Counsel
Mr. Jerry Stewart has served as Executive Vice President and General Counsel for NDI since 1991.

 Jerry has over 20 years of legal experience in medical management, employment screening and labor law.  At NDI, his primary focus is helping ensure services and client programs are legally defensible and current with all applicable federal, state and local laws, rules and regulations.   He also contributes to NDI's ongoing technology development efforts to help ensure that relevant legal matters are considered and incorporated for the protection of both NDI and its clients.

Throughout his career, Jerry has worked in the areas of labor law, labor disputes and conflict resolution, management, technology and business development, writing policies and procedures, and supporting client human resource and/or safety departments.  He has assisted hundreds of NDI clients, including public and private companies, Fortune 500 companies, government agencies and employers having unionized workplaces, with training, development of policies and procedures, regulatory audits, and support related to regulatory and voluntary workplace testing issues. 

 Jerry received his B.S. in Business Administration from the University of South Carolina and his Juris Doctorate from the University of South Carolina Law School.

Prior to joining NDI, Jerry worked as a labor law attorney and served as Vice President of the Charlotte Chamber of Commerce. He also developed the North and South Carolina Environmental School and worked with Charlotte's Drug-Free Workplace Program. Mr. Stewart has served on the Legal Advisory Council of the Institute for a Drug-Free Workplace in Washington, D.C. and has been recognized by the Institute in its Guide to State Drug Testing Laws for his early contributions to that publication. He is also certified as a Substance Abuse Program Administrator.

John O'Hara, Vice President of Occupational Healthcare Services
Mr. John O'Hara serves as Vice President of Occupational Healthcare Services for NDI.

John has 18 years of experience in engineering, technology and senior management.  His primary responsibilities are managing NDI's Occupation Healthcare operations and serving as a liaison to NDI's technology department to further develop NDI's workflow architecture, business processes and proprietary information management systems. 

John holds a B.S. in Electrical Engineering from Northern Illinois University.  He has also earned various technical certifications including Engineer in Training, Microsoft Certified Professional and Microsoft Certified Solutions Developer.

Prior to joining NDI, John worked in technology and management including positions as Chief Operating Officer, Chief Technology Officer and Senior Technical Consultant overseeing operations, software development, software implementation, product support, customer support, software training and technical support.   He has led the development and implementation of many critical business functions including work management process, business case development, business continuity and disaster recovery planning, and software development. 

John authored and published a Microsoft Case Study presenting Microsoft's DNA Architecture and Microsoft's Digital Dashboard.  He has also served as subject matter expert on Process and Project Management, Business Process Analysis, Software Development Methodologies, Website Development, Knowledge Management and Data Warehousing. 

Todd Sain, Vice President of Information Technology
Mr. Todd Sain serves as Vice President of Information Technology for NDI.

Todd has over 17 year's experience in information management systems and is responsible for NDI's technology operations including in-house and on-shore development teams, a maintenance team for existing system applications, an offsite hosted infrastructure environment, and other professionals involved in supporting NDI systems and proprietary applications.  Todd is primarily tasked with the strategic and tactical execution of NDI's technology objectives.

Todd holds a B.S. in Business Administration with majors in Management and Information Systems from Appalachian State University.  He also holds various technical certifications including Microsoft Certified Solutions Developer.  

 Prior to joining NDI, Todd designed and implemented technology solutions for national energy, banking, insurance and technology companies.  He has served in various technology roles including developer, project manager, architect and executive management.  He has led the implementation of a number of diverse projects including customer relations management, enterprise business applications, productivity solutions, manufacturing applications, voice and data networking, and data center operations.  

Todd has served as subject matter expert and keynote speaker at various technical conferences and trade shows on subjects covering security, scalability, and multi-layered architecture.   He has also served as a classroom instructor on systems and architecture design for various organizations.

 Todd's work has been nominated for The Charlotte Chamber of Commerce Information Technology Council's Blue Diamond Award for "Best Use of Technology."

Frederick G. Giles, CPP, Vice President of Background Information Services
Mr. Frederick G. Giles serves as Vice President of Background Information Services for NDI.

Fred has over 30 years of experience in loss prevention and law enforcement, public record retrieval, employment screening, corporate asset protection and investigative interviewing.   As Vice President of Background Information Services, he is responsible for providing leadership and strategic direction for NDI's background information services division.  

Fred holds a B.A. from Syracuse University and has completed several postgraduate and in-service training courses including studies at the North Carolina Justice Academy. 

Immediately prior to joining NDI, Fred served as Vice President of Research Services in the Consulting & Investigations Division of an international security services company.  Prior to that he served as President of a wholesale public records provider to the background industry and worked 10 years as Vice President of the nationwide backgrounds verification division of a multi-national company where he oversaw divisional growth from a small internal resource to a leader in the field.

Fred has also held positions as Director of a forensic training academy, Vice President of Operations for a loss prevention consulting-services company and served as a crime prevention officer for a law enforcement agency.  He has also been involved in consulting assignments from both the Department of Defense and the National Security Agency.

He is a Certified Protection Professional with ASIS International and serves on the Business Practices Council.  He is a member of the National Council for Investigative and Security Services, and the Society for Human Resource Management.  Fred is a founding member of the National Association of Professional Background Screeners where he currently serves as Vice Chair of the Government Relations Committee and Member of the Board of Directors.

Fred speaks frequently at conferences and has published several reports and articles on pre-employment selection.  He served as subject matter expert to national news media appearing on Discovery channel's "Inside" series, and has published articles in Security Management and Loss Prevention Magazines.

Kathleen D. Clark, National Sales Manager
Katy Clark serves as the National Sales Manager for National Diagnostics, Inc.  In that capacity, she is responsible for developing nationwide sales and marketing strategies to expand NDI's footprint as a leading provider of employment screening solutions.  She is also responsible for developing NDI's in-house sales and marketing initiatives.

Prior to joining NDI, Katy served as the Manager of Business Development for the Consulting & Investigations Division of an international security services firm.  She was responsible for the nationwide sales and marketing campaigns promoting the company's loss prevention and employment screening services.  Katy also managed the company's strategic partnerships and was a key participant in launching a comprehensive compliance and integrated web-based recruitment solution for corporations nationwide.  

Katy also held positions in Public Relations promoting security services, including: Background Screening, Risk Assessments, Hotline Reporting and CTPAT.  Her work was published in the Washington Post, USA Today, Washington Times, San Francisco Chronicle, Denver Post and various trade publications, including: Transportation & Distribution Magazine, Fleet Owner, Access Control & Security Systems, Security Beat and Corporate Security Newsletter.

Katy holds a Bachelor's of Arts degree from University of Wisconsin-Oshkosh, and is actively involved in RILA, SHRM, and NRF and other loss prevention and human resource organizations.

Other Key Personnel

Michael J. Wall RN, BSN, COHN-S, Manager, Medical Surveillance Department
Mr. Mike Wall serves as manager of the Medical Surveillance Department at NDI.  

Mike received his B.S. in Biology and B.S. in Nursing from the University of Wisconsin Stevens Point.  He also earned his B.S. in Behavioral Science Psychology from Viterbo College.  Mike is Board Certified in Occupational Health Nursing.

Prior to joining NDI in 1997, Mike worked for 18 years in Occupational Health and Safety with a Fortune 500 Telecommunications Company managing medical surveillance programs to assure regulatory and company compliance.

JoAnn Suminguit, CPA, Controller  
Ms. JoAnn Suminguit serves as controller for NDI.

JoAnn primary focuses on providing accounting oversight, ensuring financial reports are prepared in accordance with generally accepted accounting principles, and coordinating with management and NDI's accounting firm for financial reporting and annual audits.

JoAnn holds a B.S. in Accounting from State University of New York at Fredonia and is a Certified Public Accountant.   She has over 14 years of experience, both in private and public accounting, in manufacturing, construction and distribution service industries.  She has held positions as Director of Financial Reporting, Controller and Auditor, and, currently, has her own consulting firm.     

H. Dean Belk, M.D., Corporate Medical Director
Dr. Dean Belk serves as Corporate Medical Director for NDI.

Dr. Belk has over 30 years experience in occupational medicine and the related legal, ethical and regulatory concerns associated with the delivery of occupational medicine services.  As Corporate Medical Director, he manages NDI's medical staff and their provision of NDI's medical services to ensure compliance with employer workplace requirements, and the ethical obligations of protecting both employee and employer interests.  

Dr. Belk received his undergraduate degree from Duke University and Doctor of Medicine from the Medical College of South Carolina.  He completed his Occupational Medicine residency at Ohio State University.  Dr. Belk completed the Medical Review Officer (MRO) Training Program and has been certified as an MRO since 1992.

Prior to joining NDI, Dr. Belk practiced occupational and family medicine with Carolinas Healthcare Systems.  He also served as a Senior Physician and Consultant in Occupational Medicine for Carolinas Physician Network, Associate General Medical Director of Western Electric Company, Medical Director, North Carolina Works, Western Electric Company and was Corporate Medical Director of ALCOA (Aluminum Company of America) for 15 years. 

Dr. Belk is past President of the American College of Occupational and Environmental Medicine.