Board of Directors


Andrea Ramberg, MS, CCSH, RPSGT


Andrea has spent over a decade learning every component of polysomnography, from clinical to administrative. She is double credentialed with her RPSGT and CCSH, and holds a Masters of Science in Industrial and Organizational Psychology.  She piloted and spearheaded an inpatient sleep screening program that was featured on the 2018 August/September issue of Sleep Review magazine, and went on to consult with hospitals nationwide helping them start their own programs. Andrea is the Clinical Director for EnsoData, helping to bring sleep into the future with Artificial Intelligence.  Andrea has chaired the BRPT’s Public Relations & Marketing committee, as well as the Finance committee; she is currently serving as President.  Andrea has also volunteered with the AAST and World Sleep Society.

  Steve Marquis, MBA, RPSGT, CCSH

Immediate Past President

Steve Marquis is currently the Administrator of the Tallahassee Pulmonary Clinic, where he also oversees the Tallahassee Memorial Hospital Sleep Center. Previously he has worked in adult and pediatric sleep medicine at various hospital based sleep centers around the country. He has a Bachelor’s degree from the University of Central Florida and obtained his MBA in Healthcare Management from Western Governors University. He also received a certificate in Polysomnography from Roane State Community College. Steve has previously volunteered with the BRPT Education Program Task Force and with the Exam Development Committee. During his time on the Board he has served as Treasurer and President, as well as previously chaired the Volunteer Committee, CSTE Committee, and Finance Committee.

Amber Allen, BA, RPSGT, RST, CCSH


Amber Allen has been in the sleep field since 2008 and currently serves as the Program Director to the CAAHEP-accredited Polysomnographic Technology Program at Collin College in McKinney, TX. She was instrumental in the development of the program and building it from the ground up. Prior to joining Collin College, she worked as an RPSGT for the Cleveland Clinic in Cleveland, OH. Amber has spoken at numerous sleep and respiratory care conferences at the international, national, and state level. Amber currently serves on the public relations and marketing committee and chairs the education and CSTE committee for the BRPT. She is passionate about educating students and the public about the importance of sleep. Prior to her career in sleep, Amber was a child prodigy who started college at 14. After graduating Summa Cum Laude with her Bachelor of Arts degree at 19, she began her post-collegiate career in the music industry in Nashville, where she worked for 8 years, including appearances on American Idol and as an extra in film and TV projects with some of the biggest names in music. Amber is currently pursuing a degree in cyber-security and hopes to bridge this education into sleep medicine and other areas of healthcare to make facilities and patient information more secure.

Michael McLeland, PhD., M.Ed., BA, RPSGT


Michael McLeland has been a sleep technologist for the past 15 years. In addition to being an RPSGT, Michael has a Bachelor’s Degree in Business, a Master’s Degree in Curriculum and Instructional Design, and a PhD. in Education. He is the Technical Director for the sleep center at St. Louis Children’s Hospital in Missouri. Michael is passionate about sleep research and his current projects include examining breathing in premature infants, and the effects of opioids in managing pain in patients with OSA after surgery. Michael has a keen interest in pediatric PAP compliance; he started a pediatric PAP clinic in St. Louis and created the first support group for children using PAP and their parents. Michael has played an active role in sleep medicine education at both the state and local level. In 2006 he established the first ASTEP program and CoAPSG Accredited AAS Degree program at Washington University School of Medicine. Michael also created and taught the Science of Sleep undergraduate course at Washington University. He currently teaches and works with physicians/fellows during their pediatric sleep training at the Washington University School of Medicine and is working with the Anesthesiology Department to create a mini fellowship in sleep medicine for anesthesiologists. In addition to being a prominent speaker on the importance of good sleep, Michael continues to teach pediatric sleep in the ASTEP program at Washington University School of Medicine.


Bernie Chalmers, MA

Director-Public Member

Bernie Chalmers obtained an MA (cum laude) in psychology from the University of the Witwatersrand in South Africa. In addition to starting three boutique consultancies he was part owner of the largest Human Resource consulting business in Southern Africa. He specialized in organization development with a focus on affirmative action and conflict management. He moved to Canada in 1991 and has worked as President or Managing Director in multinational companies based in the UK and Canada. Currently he is semi-retired and his management consulting company, BEREV Ltd., works with companies in the US and Canada. He served as President and remains an Honorary Fellow of what is now the Institute of People Management (South Africa). He also served on the Council of the South African Psychological Association.


Michelle DiMaria, BS, RRT, RPSGT


Michelle DiMaria has a near 20-year career with Children’s Hospital of Philadelphia as a Respiratory Therapist, Sleep Technologist, and Clinical Supervisor. She graduated from The University of Medicine and Dentistry of New Jersey in Respiratory Care. After a decade of working directly with pediatric patients conducting sleep research, being involved in publications and working on career advancements, she currently holds a position as Clinical Supervisor for a 16 bed, 3 site lab for both inpatient and outpatient pediatric sleep studies. Michelle is focused on the importance of interprofessional collaboration; improving patient care matched with an effective multidisciplinary team. Serving as a board member for the NJ Sleep Society for several years, Michelle helped create new marketing strategies for the organization making it more targeted and accessible to sleep professionals.


Eduardo Hernández BS, RPSGT, CCSH


Eduardo Hernández graduated cum laude with a Bachelor of Science degree in Respiratory Care from the Universidad Metropolitana of Puerto Rico. Bilingual in English and Spanish and multi-credentialed as a CCSH and as an RPSGT, he currently serves on the Board of the Florida Association of Sleep Technologists. In addition, Eduardo is an active member of the BRPT Examination Development Committee (EDC), has participated in a BRPT Standard Setting as a Subject Matter Expert and has spoken at numerous sleep conferences.

Previously Eduardo worked at various adult and pediatric hospital-based sleep centers in Puerto Rico, and is currently working at Nemours Children’s Hospital Sleep Center in Orlando, Florida, where his passion for pediatric sleep technology and medicine grows every day.


Vikas Jain, MD, CCSH


Vikas Jain is a board certified sleep medicine physician practicing with Northwestern Medicine.  He also serves as an Adjunct Clinical Instructor for Stanford University’s Sleep Medicine Fellowship Program as well as a Health System Clinician at Northwestern University.  In addition to his passion for sleep medicine, Dr. Jain has a clinical interest in clinical informatics and obesity medicine.


Marc C. Johnson, B.A., RPSGT


Marc Johnson began his career in sleep in 1992 doing research for Thomas Jefferson University Hospital. After graduating from Temple University with a BA in Psychology, Marc began working as a sleep technologist at Pennsylvania Hospital in Philadelphia. In 2000, Marc became the lead daytime technologist. In 2005, Marc took on a new role as Clinical Director at the Drexel University College of Medicine’s Sleep Center, which is the position he holds today. Marc has held his RPSGT credential since 2004.


Su Jeong Linstrom, RPSGT, RST


Su Jeong Linstrom is currently the Associate Clinical Manager of the Sleep Program at Children’s Hospital Colorado. Su has served in various roles in adult and pediatric sleep since 2008. She is passionate about pediatric sleep and has a special interest in Health Literacy and advocates for inclusive and equitable care for all. Su studied Biology as an undergraduate student at Colorado State University and earned a Project Management certification from Cornell University.


Katie Tran, MD


Katie Tran is a board-certified sleep medicine physician practicing at UT Southwestern Sleep and Breathing Disorders Center. She is an assistant professor who helps with the sleep fellowship program, the sleep lab and sleep clinic operations. Dr. Tran has clinical interests in alternative therapies to obstructive sleep apnea and improving CPAP tolerance.

Angelica Benitez Yusti, RPSGT, RST


Angelica Benitez Yusti, is the Co-founder of, where she delivers the STAR program in Spanish to medical professionals in Latin America. Angelica brings nearly a decade of experience in the sleep field and holds a Bachelor’s degree in Respiratory Care from the Universidad Santiago de Cali of Colombia and a Postgraduate Graduate Diploma Course in Nursing Management from West and Ealing College in the United Kingdom. She is bilingual in both English and Spanish, and holds the RPSGT and RST credentials. In addition, she is a Certified Technologist in Colombia by ACMES, the Colombian sleep association. Angelica also serves as a Sleep Educator at Manuela Beltran University in Colombia, which administers the Sleep Diploma Program.


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