Junjie Liu, MD, PhD

Clinical Fellow


Dr. Liu received Ph.D. in applied physics and electrical engineering, and conducted years of research in the brain imaging of both humans and small animals, before he studied medicine and completed clinical training in both internal medicine and sleep medicine. Starting in July 2019, Dr. Liu will return to the research arena, and will focus on obstructive sleep apnea (OSA), a very common yet often ignored disease that impacts more than 20 million Americans. Drawing on his prior expertise in brain imaging, Dr. Liu proposed to study the brain activity during sleep in OSA patients by using functional magnetic resonance imaging (fMRI), a rapid whole-brain imaging method. Luckily, this proposed study is now in progress, thanks to the kind support (Focused Projects Award) from the American Academy of Sleep Medicine. In addition, Dr. Liu is very interested in the interactions between OSA and two common diseases, namely the chronic kidney disease (CKD) and stroke. He is contributing to the pertinent clinical studies in renal function and stroke led by his primary mentor, Dr. H. Klar Yaggi. These ongoing projects will help Dr. Liu develop his patient-oriented research career in sleep medicine.

Education & Training

MD Geisel School of Medicine at Dartmouth, Medicine (2015)
PhD Stanford University, Applied Physics (and PhD Minor in Electrical Engineering) (2006)
MS Tsinghua University (China), Physics (1999)
BE Huazhong Univ. of Sci. & Tech. (China), Engineering (1996)
Resident Physician Yale New Haven Hospital (2015-2018)
Research Fellow NINDS, National Institutes of Health (2008-2011)

Honors & Recognition

  • 2019 Young Investigators Research Forum TraineeAmerican Academy of Sleep Medicine Foundation (2019)

  • 2018 Focused Projects Award for Junior InvestigatorsAmerican Academy of Sleep Medicine Foundation (2018)

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Contact Info

Junjie Liu, MD, PhD
Mailing Address
300 Cedar Street, TAC S425
New Haven, CT 06520