NCCT Board Members

If you have comments about Board policies or procedures, or other pertinent questions for the Board of Testing, please contact the Chair at

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David W. Stockburger, PhD

Chair, representing the Public

Dr. Stockburger earned his undergraduate degree from Ohio University, and his Masters and PhD degrees from the Ohio State University, where his major was Mathematical Psychology. He retired as Deputy Director of Academic Assessment at the U.S. Air Force Academy in Colorado.

Dr. Stockburger’s previous positions have included serving as Director of Integrated Competency Assessment Network for the Maricopa Community Colleges and Professor in the Department of Psychology at Southwest Missouri State University. He has extensive consultation experience, including positions with the Springfield (MO) public schools, the Springfield Police Department, Atomic Dog Publishing, the Psychology Department of the Medical Center for Federal Prisoners (Springfield, MO), and local agencies including ECCO and The Center for the Developmentally Disabled. In addition, Dr. Stockburger has consulted with more than one hundred graduate degree candidates on their doctoral dissertations or master’s theses. Dr. Stockburger has authored seventeen professional publications, four textbooks for classroom use, two web texts, and has a long list of scholarly presentations.

Sarah Glennon


Sarah Glennon is currently a resident of Connecticut. She received her Associate of Science degree for Medical Laboratory Technician from Manchester Community College, Manchester, Connecticut. She obtained her Bachelor in Science degree from Bridgewater State College in Bridgewater, Massachusetts, and her Master of Arts degree in Teaching from the Sacred Heart University in Fairfield, Connecticut.

Prior experience includes working as a Medical Laboratory Scientist for International Clinical Laboratories, Smith Kline Laboratory, Roche Biomedical Laboratory, and the William W. Backus Hospital where she also performed Phlebotomy duties for over ten years. Mrs. Glennon has been an instructor for the Department of Biological Sciences at Manchester Community College, as well as for Phlebotomy and Medical Assisting programs at Huntington Institute, Goodwin College, and the Quinebaug Valley Community College. She was a consultant for curriculum for the Phlebotomy program at Three Rivers Community College. From 2004 through 2016 Mrs. Glennon was the Phlebotomy Manager at the Lawrence + Memorial Hospital in New London, Connecticut. Currently, she is the Supervisor of Outreach Clinical Services at Trinity Health of New England’s Collaborative Laboratory Services in Hartford, Connecticut.

She is certified as a Medical Laboratory Technician and a Microbiology Technologist through the American Society of Clinical Pathologists (ASCP).

Diane Dick


Diane Dick comes to the NCCT Board of Testing with a strong background in nursing and healthcare education. After her first career as a legal secretary, she entered nursing school and earned her Licensed Practical Nurse credential from the Michigan Board of Nursing.

Diane’s professional experience has included Charge Nurse positions with the Saint John Bon Secour Community (Detroit, MI), the Autumn Woods Residential Health Care Facility (Warren, MI), and Shorepointe Nursing Care (Saint Clair Shores, MI). Since 2007, she has been employed by Dorsey Schools as a Clinical Instructor. Her lecture and lab instructional assignments have included electrocardiography, phlebotomy, medical and surgical asepsis, patient health history, vital signs, anatomy, physiology, first aid, Basic Life Support, and other coursework related to patient care.

Loretta McDonald


Loretta McDonald has worked in the healthcare field for over 23 years and has a passion for educating and promoting certification integrity. Her credentials include a Master's degree from Long Island University and certifications in healthcare instructing, coding, billing, front office administration, electronic health records and HIPAA.

Loretta’s career consists of coding, billing and consulting in nine different specialties including Psychiatry, Internal Medicine, Neurology, OB/GYN, Pediatrics, Gastroenterology, Cardiology, Family Practice and Chiropractic. Loretta is a textbook reviewer for healthcare/education publishers McGraw-Hill and Elsevier, has written several healthcare related articles, and is an ongoing subject matter expert and certification exam contributor for two national certifying bodies. Loretta has also served as a Certified Proctor, a Benefits Administrator for the self-funded medical laboratory equipment manufacturer Savant Instruments, and as a Practice Manager.

Currently Loretta is a CEU Vendor, an Independent Contractor, a Trainer for ICD-10 Boot Camps, a Coding Specialist and Auditor for the Tennessee Academy of American Pediatrics, and instructs and develops curriculum for healthcare information management courses which are conducted live and distributed as teaching webinars across the United States. She describes herself as an educational strategist whose goal is to equip professionals for the business side of medicine. Her motto is "Getting You Where You Want To Be".

Rhiannon Winsor


Rhiannon Winsor has 18 years of experience in the field of surgical technology. Her prior experience includes working as a Certified Surgical Technologist at Casa Grande Medical Center, Avista Adventist Medical Center, Northwest Tucson Surgery Center, and Northwest Women’s Center where she gained working knowledge in nearly every facet of surgery. From 2010-present, she has had the pleasure of serving as a Surgical Technology Program Director for Brown Mackie College-Phoenix and Brown Mackie College-Tucson. During her time with Brown Mackie College, she has participated in curriculum development; served as Clinical Coordinator; developed and implemented a Certification Prep course, as well as taught all didactic courses in the surgical technology program. In addition, she facilitates CPR courses for all students on campus that require Basic Life Support certification prior to clinicals.

She is an Arizona native and currently resides in the Phoenix area. She received her Associate of Occupational Science degree from the Bryman School. She earned her Bachelor’s degree in Business with an emphasis in marketing from Western International University, and she earned her Master’s degree in Business Administration from Argosy University.

Rhiannon’s certifications include: Certified Surgical Technologist (CST) from the National Board of Surgical Technology and Surgical Assisting, Tech in Surgery- Certified (TS-C) from the National Center for Competency Testing, and Certified Basic Life Support instructor from the American Heart Association.

Celeste Skinner


Celeste Skinner has worked in the healthcare field as a medical assistant and limited practice radiology technician for over thirty-five years and has taught healthcare education technologies programs in a career and technical institution for fourteen years. She brings with her a passion and commitment to ethical, compassionate, and skilled care of all patients she works with and strives to instill these qualities in her students as they become the healthcare professionals of the future. She is a strong proponent for certificate integrity and the professionalism it represents.

Her credentials include a Bachelor of Science degree from Excelsior College in Health Science Education and a Master of Science degree from Western Governors University in Curriculum and Instruction.

She has been a technical reviewer for Elsevier publishing, and is a co-author of an article published in The Journal of Competency Based Education. She co- presented an open forum breakout session with colleagues at the Innovations Conference in Chicago in 2016 on competency-based education. She works with students as a faculty mentor for the SLCC SAT Skills USA chapter in the healthcare technologies area. She has worked with National Center for Competency Testing in various committee meetings to ensure valid and reliable certification testing of medical assistants pursuing the NCMA credential.


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