Board of Directors



Kevin Postol, DDS, Diplomate, ABDSM

Dr. Postol maintains a combination of a general dental practice and dental sleep medicine practice simultaneously in St. Louis, MO. He received his dental degree from the University of Missouri-Kansas City and attended the University of Iowa for a General Practice Residency.  He has practiced general dentistry since 1992.  In 2006, he entered the field of dental sleep medicine and later became a Diplomate of the American Board of Dental Sleep Medicine (ABDSM) in 2011. He is past chair of the AADSM Essentials of Dental Sleep Medicine Course and has spoken at numerous local and national meetings. He has served on the AADSM Board of Directors since 2014 and currently serves as a member of the AADSM Mastery Program faculty.


Michelle Cantwell, DMD, Diplomate, ABDSM

Dr. Cantwell is a graduate of Wilkes University and the University of Pittsburgh, School of Dental Medicine. Following graduation, she completed a three-year residency in prosthodontics and served on active-duty service as a Lieutenant Commander in the US Navy. She became a Diplomate of the ABDSM in 2014. In 2018, she merged her dental sleep medicine practice into the Pulmonary & Sleep Medicine Department of Wellspan Hospital. She has served as chair of the AADSM Education Committee, member of the AADSM Health Policy Education Committee, and currently serves as a member of the AADSM Mastery Program faculty.


Immediate Past President

Mitchell Levine, DMD, Diplomate, ABDSM

Dr. Levine is an associate professor of orthodontics at St. Louis University. He is a diplomate of the American Board of Orthodontics and the American Board of Dental Sleep Medicine. Prior to joining academia, Dr. Levine spent 30 years in private practice in Jacksonville, Florida where one third of his practice was related to treating sleep-disordered breathing.

Dr. Levine has been a member of the AADSM since 2010. Throughout that time, he has served on the Health Policy Education Committee, served as chair of the task force that wrote the Dental Sleep Medicine Standards for Screening, Treating and Managing Adults with Sleep-Related Breathing Disorders, was a member of the task force that developed the consensus recommendations on Identifying the Appropriate Therapeutic Position of an Oral Appliance, and served as a faculty member of the AADSM Mastery Program.  He was also co-author of the Obstructive Sleep Apnea and Orthodontics: An American Association of Orthodontists White Paper.


Paul Jacobs, DDS, Diplomate, ABDSM

Dr. Jacobs is a third-generation dentist, practicing general, cosmetic and dental sleep medicine. He is the Dental Director of Upper Peninsula Sleep Dentistry and the Care Free Dental Clinic in Escanaba, Michigan which cares for people who are uninsured and underserved. He speaks nationally to dental and medical groups and is an expert in practice management including systems, leadership and team building.  A 1983 graduate of the University of Detroit School of Dentistry, he is a global leader in bacterial DNA testing for periodontal pathogens and non-surgical periodontal therapy. He is a Diplomate of the ABDSM, served as a member of the AADSM Accreditation Committee, and co-chaired the inaugural AADSM Practice Management Course.


Becky Fox, DMD, Diplomate, ABDSM

Dr. Fox has been practicing dentistry in Central Pennsylvania for over 25 years. She graduated from the Temple University School of Dentistry, where she was selected for the Clinical Achievement Award and Omicron Kappa Upsilon Honor Society.  As a lifelong student, her most recent endeavor has been the field of dental sleep medicine.  Completing dental sleep medicine programs at Tufts University School of Dentistry and the inaugural year with the AADSM Mastery Program, she then achieved Diplomate status with the ABDSM.  She has practiced in various clinical settings ranging from a hospital-based dental residency program, owning a solo dental practice, managing partner in a large multi-location/multi-specialty dental group, and is currently practicing dental sleep medicine full-time.  Dr. Fox is also enthusiastic about sharing her knowledge through her experience as a dental residency attending faculty, an in-office instructor for Cerec technology, and a former member of the AADSM Annual Meeting Committee.

Jarrett Grosdidier, DDS, Diplomate, ABDSM

Dr. Grosdidier is a graduate of UMKC Dental School. He is a general dentist and a Diplomate of the ABDSM. He currently practices in Leawood, KS and Garnett, KS, where he owns and manages two busy multi-doctor dental offices. He has served as a member of the AADSM Annual Meeting Committee and AADSM Practice Management and Patient Resource Review Committee, co-chaired the AADSM Emerging Concepts: Ordering and Administering HSAT Course, and co-authored the "Identifying the Appropriate Therapeutic Position of an Oral Appliance", which was published in JDSM. His passion is delivering high quality care to all different demographics and populations. 

Nelly Huynh, PhD

Dr. Huynh is an Associate Professor at the Faculty of Dentistry, Oral Health Department, at the Université de Montréal and the CHU Sainte - Justine Research Center. Her research laboratory is dedicated to clinical research focused on dental sleep medicine (sleep bruxism, oral appliances) and sleep medicine (sleep apnea) from childhood to adulthood. Nelly completed her PhD in Montreal on sleep bruxism. This was followed by a postdoctoral fellowship in OSA and imaging, in addition to pediatric sleep disorders at Stanford University, and training in epidemiology, and global health at the World Health Organisation in Geneva. She has over 50 peer-reviewed published articles in the field of sleep medicine and dental sleep medicine. Dr. Huynh has served on the AADSM Scientific Committee and Annual Meeting Committee both as a Chair and a member.

Omar Mahmassani, DDS, Diplomate, ABDSM

Dr. Mahmassani received his Doctor of Dental Surgery degree in 1989 from Georgetown University. He then pursued a two-year General Practice Residency training program at the Detroit Medical Center in affiliation with the University of Detroit/Mercy. In 1994, he established a small private practice in Frederick, Maryland emphasizing excellence in quality, customer service, efficiency and the latest advances in technology. In 2015, he received a Masters in Business Administration from Hood College. He previously served as the Chair of the AADSM Annual Meeting Committee and is a Diplomate of the American Board of Dental Sleep Medicine.

Rosemarie Rohatgi, DMD, Diplomate, ABDSM

Dr. Rohatgi is the founder and owner of San Diego Sleep Therapy, which is dedicated entirely to the practice of dental sleep medicine. She has been an active member of the AADSM for over 10 years and is a Diplomate of the ABDSM, ASBA, and ABCDSM. She has volunteered on various AADSM task forces and committees.  Dr. Rohatgi served on the 2020 Compliance Consensus Task Force and has authored research papers that were published in the Journal of Dental Sleep Medicine (JDSM).  She is also an active member of the American Academy of Sleep Medicine, Past-President of San Diego’s Academy of General Dentistry and served as a Board Member for both the Parkinson’ s Association of San Diego and American Parkinson’s Disease Association. 

Kevin Wallace, DMD, Diplomate, ABDSM

Dr. Wallace has been a general dentist in practice since 1990. Since 2016, he has been exclusively practicing dental sleep medicine. Dr. Wallace's educational background includes an undergraduate degree in Biology from Marquette University in Milwaukee, Wisconsin in 1985 and a DMD degree from Washington University School of Dental Medicine in St. Louis. Dr. Wallace is passionate about dental sleep medicine. His primary motivator was his daughter who suffered from obstructive sleep apnea as a child. Dr. Wallace has been determined to remain involved in this fascinating and rewarding aspect of dentistry. He became a Diplomate of the ABDSM in 2018, has served on the AADSM Education Committee both as a Chair and a member, and currently serves as a member of the AADSM Mastery Program faculty.