Welcome to the

Sleep Wake Center

At the Sleep Wake Center at HPN, we provide comprehensive, personalized care for the full spectrum of sleep disorders. The center is led by a board-certified Sleep Medicine physician. We use advanced diagnostic tools—including traditional in-lab polysomnography (PSG) and modern, convenient, home-based testing—to deliver accurate diagnoses and tailored treatment plans.  We are proud to offer care to patients from across all Hawaiian Islands, helping individuals and families achieve healthier, more restorative sleep.

For patients with obstructive sleep apnea, we are proud to offer several innovative treatment options. In addition to the gold standard PAP therapy, we provide Inspire hypoglossal nerve stimulation, collaborate with sleep dentists for mandibular advancement devices, and partner with weight management specialists to incorporate newly approved weight loss medications as part of a holistic approach to OSA treatment.

As the only sleep clinic on Oahu actively participating in clinical research, we are committed to advancing sleep medicine and providing our patients with access to the latest innovations in care. Proudly serving patients from all of the Hawaiian Islands, we are dedicated to helping individuals and their families find relief from sleep-related difficulties and achieve restful, restorative sleep.

Meet the Providers

Nicholas Anderson, M.D.

Sleep Medicine

Fellowship: Sleep Medicine, University of Utah School of Medicine

Residency: Family Medicine, University of Hawaii

Medical School: University of Colorado School of Medicine

Christopher A Larrinaga

Neurology, Neuroscience

Memory, Epilepsy, Sleep, Neuromodulation

Sub-Investigator – Clinical Research Center

Meet Our

Multidisciplinary Team

Kore Kai Liow, M.D.


Neurology

Founder & Neuroscience Chair,
Hawaii Pacific Neuroscience
Clinical Professor of Medicine (Neurology), Clinical & Translational Research,
University of Hawai`i John A. Burns School of Medicine

Nicholas Anderson, MD


Sleep Medicine

Director, Sleep and Insomnia Center
Clinical Assistant Professor of Family Medicine,
University of Hawai`i John Burns School of Medicine

Darren DuGas, M.D.


Neurology

Director, Video-EEG Epilepsy Monitoring Unit (EMU)
Co-Director, Comprehensive Epilepsy Center
Sub- Investigator, Epilepsy Research Unit

Natalia Gonzalez Caldito, M.D.


Neurology

Director, MS & Neuroimmunology Center
Director, ALS & Neuromuscular Center & IV Infusion Center
Sub investigator, MS & Neuroimmunology & Neuromuscular Research Unit

Eonjung Angeline Kim, M.D.


Neurology

Director, Headache & Facial Pain Center
Sub- Investigator, Headache Research Unit

Michael Sonson, M.D.


Neurology
Alzheimer's and Memory Disorders


Director, Memory & Alzheimer’s Research Institute (MARI)

Janette Abramowitz, M.D.


Neurology

Research Faculty, Brain Mapping Lab, Brain Research, Innovation & Translation Labs
Residency: Combined Neurology & Psychiatry University of Massachusetts Medical School Medical School: University of Massachusetts Medical School

Alexander Takayesu, M.D., M.P.H.


Psychiatry

Perinatal Psychiatry, Post Partum Depression
Assistant Professor of Psychiatry, University of Hawaii John A Burns School of Medicine
SubInvestigator, Center for Psychiatric Neuroscience

Chris Larrinaga, APRN-BC, MSN, CNRN


Neurology, Neuroscience

Sleep Medicine
Sub-Investigator, Clinical Research Center

Nicole Evans, PA-C


Neurology, Neuroscience

Sub-Investigator, Clinical Research Center

Qi Zhi, DNP, MPH, FNP-BC


Neurology, Neuroscience

Memory Disorders
Sub-Investigator, Clinical Research Center

Qing X. Li PhD


Basic Science, Neuroscience

Professor, Department of Molecular Biosciences and Bioengineering, College of Tropical Agriculture and Human Resources University of Hawai‘i at Mānoa, Honolulu

Katy Tarrit, Ph.D.


Information and Computer Sciences, AI (Artificial Intelligence)
NeuroAI Research Lab/Alzheimer's Neural Network EEG (ANNE) Lab


Assistant Professor, Katy Tarrit, Ph.D.
Assistant Professor, Information and Computer Sciences
University of Hawai'i at Manoa

Barbara Pitts, Ph.D.


Neuropsychology

Sub Investigator
Alzheimer’s Research Unit
Memory Research Scientist, Hawaii BRAIN Lab.

Chathura Siriwardhana, PhD


Biostatistics

Sub Investigator
Alzheimer’s Research Unit
Memory Research Scientist, Hawaii BRAIN Lab.

Our team is committed to reducing the disparity in health status of its racial and ethnic minority, rural, low-income, and other underserved populations.  We have therefore focused our efforts in caring for underserved, minority, diverse patient populations.  Click to review our commitment to Diversity, Equity and Inclusion and work undertaken by Center for Neuroscience Diversity especially for the Asian Americans and Native Hawaiian Pacific Islander Population (AANHPI). 

©2026, Hawaii Pacific Neuroscience. All Rights Reserved.