School of Medicine


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  • Allison Tamara Siebern

    Allison Tamara Siebern

    Adjunct Clinical Associate Professor, Psychiatry and Behavioral Sciences - Sleep Medicine

    BioDr. Allison Siebern, PhD, DAc, LAc, CBSM is a sleep medicine psychologist and neuroscience-based doctor of acupuncture specializing in sleep, mood, and neurological health. She is board certified in Behavioral Sleep Medicine by the American Board of Sleep Medicine.

    Dr. Siebern is a pioneer in the field of integrative sleep health as she blends her training and expertise in neuroscience-based acupuncture, cognitive behavioral medicine, psychophysiology, near-infrared transcranial photobiomodulation and clinical neuroscience. Dr. Siebern's current integrative health research is on the intersection of scalp acupuncture and near-infrared transcranial photobiomodulation (tPBM) as neuromodulatory mechanisms to assist in improved symptom outcomes in neurodegenerative disorders and post-stroke recovery.

    Dr. Siebern is currently a Sleep Medicine Psychologist and Behavioral Sleep Medicine Fellowship Track Director with the Durham VA Medical Center and the Director of Integrative Sleep Wake Health, PLLC. Dr. Siebern is an Adjunct Clinical Associate Professor at Stanford University School of Medicine in the Sleep Medicine Division where she completed the sleep fellowship from 2008 to 2010 and stayed on as full-time faculty until 2015 where she served as Associate Director and Co-Fellowship Training Director and then Director of the Behavioral Sleep Medicine Program. She has been treating patients of all ages in the field of sleep medicine for 15 years. She consults with companies on sleep and neurological health science, is published in peer-reviewed journals, has given talks at national conferences, and has been interviewed with many media outlets. Dr. Siebern has a passion for the field of sleep health and believes in the importance of training future generations of sleep providers.

  • G. Dave Singh DMD PhD DDSc

    G. Dave Singh DMD PhD DDSc

    Adjunct Professor, Psychiatry and Behavioral Sciences - Sleep Medicine

    BioDr Dave Singh is a US citizen who was born, educated and trained in England, UK. He holds three doctorates, including Doctor of Dental Medicine; a Ph.D. in craniofacial cleft palate development; and a third Doctorate in Orthodontics. Currently, Dr Singh is an Adjunct Professor in Sleep Medicine at Stanford University, USA. Previously, he was awarded a postgraduate grant (University of Oxford, UK) and was later appointed to the Board of Examiners, Royal College of Surgeons of England. Supported by Harvard University, the University of Michigan, and the University of Hawaii, he was invited to relocate to the Center for Craniofacial Disorders, University of Puerto Rico, USA where he led a NIH-funded program of clinical craniofacial research. He is an honorary diplomate of the American Sleep and Breathing Academy, a Member of the World Sleep Society, a Member of the American Academy of Sleep Medicine, a Member of the World Dentofacial Sleep Society, a Member of the NC Academy of Sleep Medicine, a Fellow of the Pierre Fauchard Academy, an Academic Fellow of the World Federation of Orthodontists, and a Fellow of the International Association for Orthodontics, where he was awarded prizes in 2005, 2013 and 2014. He has published over 220 articles in the peer-reviewed medical, dental and orthodontic literature, has published 9 books/chapters and has had over 20 US, Canadian, European and international patents issued. During 2008-2016, Dr Singh was the Founder and CEO of his start-up company, which was successfully listed on NASDAQ after its IPO in 2020. In 2019, Dr. Singh was the recipient of the US Invisible Disabilities Association award. In 2020, Dr Singh was given a lifetime achievement award for his work on obstructive sleep apnea. Dr Singh is the inventor of the DNA appliance, which was the first palatal expander to be FDA approved in 2023 for the treatment of mild-moderate as well as severe obstructive sleep apnea in adults. In 2024, the DNA appliance became the first palatal expander to be FDA approved for the treatment of obstructive sleep apnea in children