Leadership Team

Carlos Roca, President

Mr. Carlos Roca graduated from Villanova University, with a Bachelor of Finance. In 1982, Mr. Roca founded Main Line Foto, Inc (Conshohocken, PA), a photographic supply company specializing in the professional and medical fields. He served as CEO for Main Line Foto, until Eastman Kodak Company acquired it in 1994.  Under Mr. Roca’s direction, Main Line Foto succeeded through technological innovation including, development of an electronic system to track inventory and supplies, automated order entry, processing and shipping, and improved material packaging quality. In 1997, Mr. Roca purchased what would become the Center for Disease Detection (CDD) and is currently CEO.  Under Mr. Roca’s direction, CDD has experienced rapid growth, and continues to expand its service area. Mr. Roca’s leadership brings a patient-first, client-valued philosophy to CDD.  Over the last 15 years, Mr. Roca has implemented state-of-the-art technologies, automated processes, workflow improvements, proactive client services, corporate social responsibility initiatives, and common sense at CDD.


Dean Skelley, PhD, Laboratory Medical Director

Dr. Skelley has had over 40 years of experience in the field of clinical chemistry and laboratory administration. He received his undergraduate degree from Bates College (Maine) and his graduate degrees from The Ohio State University. His post-doctoral work focused on the development of radioimmunoassays, first at The Ohio State University and then with the Department of Obstetrics & Gynecology at Baylor College of Medicine in Houston, Texas. He served as Clinical Biochemist with the Memorial Hospital System in Houston and then moved to San Antonio where he became Director of Operations with the Severance Reference Laboratory. He was appointed Director of Scientific Development with Cone Biotech (Seguin, Texas) and was then selected to become Director of Scientific Affairs at MCLAS Technologies in San Antonio. He then served as Laboratory Director for Laboratory Corporation of America (LabCorp) and was responsible for all technical operations in San Antonio, Austin and Corpus Christi, Texas for ten years. After serving as Director of Laboratory Services with the South Texas Blood & Tissue Center (San Antonio), Dr. Skelley joined the Center for Disease Detection in 2004 as Laboratory Director and previously served as Laboratory Director for CHRISTUS Santa Rosa Hospital, in New Braunfels, Texas.

Alberto Hernandez, Chief of Laboratory Operations

Mr. Hernandez earned a bachelor degree in Biology from the University of South Florida. Prior to joining the Center for Disease Detection, Mr. Hernandez was with Laboratory Corporation of America for 12 years where he ran large scale clinical and anatomic pathology testing facilities, with oversight of laboratory procedures, workflows, and quality control. His background includes expertise in process improvement, new technology validation and implementation, logistics management and oversight of more than 500 personnel. In addition to specialized experience in management of cytology and anatomic pathology processing, Mr. Hernandez has experience with over 40 analytical chemistry assays, which include a wide-variety of testing areas, such as toxicology (drugs of abuse panels), virology (HPV, Hepatitis and HSV 1 and 2), molecular biology (HIV Genotyping). Presently, Mr. Hernandez serves as Chief of Laboratory Operations for CDD where he oversees all aspects of the operation relating to diagnostic testing and specimen quality.


Mohammad Al-Ghoul, Chief Technical Officer

Dr. Al-Ghoul has been the Technical Director at the Center for Disease Detection (CDD) since 2010. Prior to his work at CDD, he was a Scientist at the University of Louisville medical center. He completed a fellowship in Clinical Chemistry and Toxicology at the department of Pathology and Laboratory Medicine, University of Louisville Medical Center and associated hospitals. He also served as an associate laboratory director at PGxL laboratories. He holds a PhD in Chemistry with emphasis of Biochemistry from Florida Atlantic University. He was an invited speaker at several scientific meetings and international academic institutions. He is also a recipient of several national and international awards and an author of several scientific papers and abstracts.


Karen Rodman, Director of Billing Operations

Ms. Rodman joined Center for Disease Detection with over 25 years of Medical Billing, Compliance, Phlebotomy, Client Account Management and Customer Service experience with one of the largest clinical laboratories. Prior to joining CDD Ms. Rodman worked for Laboratory Corporation of American in the role of Director of Project Management and Billing Manager. Responsibilities included being a liaison with insurances companies, ensuring compliance with state and federal laboratory and medical billing regulations and successfully managing departmental budgets of over $ 400 million dollars. She earned her B.A. in Organizational Management from Warner Southern College in Lake Wales, FL. Presently, Ms. Rodman’s responsibility as Director of Billing Operations for CDD is to oversee all aspects of the third party billing operations.


Yvonne I. Serbin, Director of Human Resources

Mrs. Serbin has over 10 years experience in Human Resources Management. For 7 years prior to joining the Center for Disease Detection, she served in a director (and manager) capacity for recruitment and retention at several large healthcare organizations/systems. Mrs. Serbin also has prior experience in the Non-Profit and Retail industries, and has successfully developed comprehensive recruitment and retention programs that both reach highly skilled personnel (including those in specialty areas with limited population pools) and reduce company costs. Presently, Mrs. Serbin is responsible for all aspects of Human Resources Management at the Center for Disease Detection, with particular dedication to recruiting qualified personnel, development and oversight of human resources-related training programs, oversight of human resources compliance, maintenance of day-to-day employee relations, and regular assessment of employee workplace satisfaction. Yvonne graduated from St. Mary’s University with a BBA in Marketing and currently holds her PHR certification.