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Who are the UCSD Sleep Research Lab?


Atul Malhotra, MD
Atul Malhotra, MD
Professor and Vice Chief of Research, Pulmonary Critical Care and Sleep Medicine
Chief interests: 
  • Pathogenesis of sleep apnea
  • Metabolic/cardiovascular complications of sleep disorders
  • Mechanical ventilation in acute respiratory distress syndrome

Robert Owens, MD
Associate Professor of Medicine
Chief interests:
  • Pathogenesis of sleep apnea
  • Sleep apnea and chronic lung disease
  • ICU delirium
Jeremy Orr, MD
Assistant Clinical Professor
Chief interests:
  • Sleep apnea in chronic lung and heart disease
  • Non-invasive ventilation
  • Control of breathing

Omar Mesarwi, MD
Associate Physician
Chief interests:
  • Sleep apnea and hypoxia
  • Liver fibrosis and fatty liver disease
Rakesh Bhattacharjee, MD
Associate Clinical Professor
Chief interests:
  • Pediatric sleep medicine
  • Pulmonology
Chantal Darquenne, PhD
Chief interests:
  • Aerosol deposition in the lung
  • Upper airway dynamics in sleep apnea
  • Pulmonary ventilation
Darquenne Lab Website


Postdoctoral Scholars

Stuti Jaiswal, MD, PhD

Resident (Internal Medicine), KL2 Scholar

Christopher Schmickl, PhD
Postdoctoral Scholar 


Pam De Young, RPSGT/BA, Clinical Research Supervisor II

Janelle Fine
Janelle Fine, Development Engineer

Dillon Gilbertson MS, Clinical Research Coordinator
Naa-Oye Bosompra BA, Assistant Clinical Research Coordinator
Rebbecca Brena BA, RPSGT Clinical Research Coordinator
Jazmin Velaquez BS Assistant Clinical Research Coordinator


Frank L. Powell, PhD
Professor, Physiology Division Chief
Chief interests:
  • Control of ventilation, especially chemoreception
  • Comparative physiology of gas exchange
  • High Altitude
Powell Lab Website 
Susan R. Hopkins, MD, PhD
Professor (Physiology, Radiology)
Chief interests:
  • Exercise physiology
  • High altitude physiology
  • Functional lung imaging
  • Pulmonary gas exchange during exercise
  • Elite athlete training
David Dubowitz, MD, PhD
Associate Professor (Radiology)
Chief interests:
  • Physiology of functional MRI
  • MRI measurements of cerebral blood flow and metabolism
  • Acclimatization and deacclimatization to hypoxia at altitude

Tatum S. Simonson, PhD
Assistant Professor (Physiology)
Chief interests:
  • High-altitude physiology and genetic adaptations in highland populations
Simonson Lab Website 

Ann Elliott, PhD
Research Scientist (Physiology, Radiology)
Chief interests:
  • Functional lung imaging
  • Pulmonary gas exchange
Rebecca Theilmann, PhD
Assistant Researcher (Radiology)
Chief interests:
  • Functional Magnetic Resonance Imaging
  • Diffusion tensor imaging
Ajit Raisinghani, MD
Clinical Professor (Cardiology)



Erik Smales, Staff Research Associate
Rachel Jen, MD, Visiting Scholar (Canada)
Sylvia Yanru Li, MD, Visiting Scholar (China)
Dae Kang, PhD, Postdoctoral Scholar
Stacie Moore CRT-SDS, Staff Research Associate
Naomi Deacon PhD Postdoctoral Scholar
Vicky Powell Staff Research Associate