Sleep Medicine Fellowship, Who We Are.

What to Do in Portland| 36 Hours| The New York Times

Current Fellows

Photograph of Dr. Abdullah Khalid

Abdullah Khalid, M.D.

Hometown: In just a short amount of time, Portland has become my hometown.

Residency: University of Pittsburgh Medical Center, Internal Medicine

Fellowship: Oregon Health & Sciences University, Critical Care Medicine

Why Sleep? Sleep is a fascinating aspect of human physiology with a built in restorative function. In critical illness, although we see patients resting on continuous sedatives, their true recovery to being themselves does not appear until their natural, or true restorative sleep, has returned. I’m intrigued by the possibility of an intervention/drug that could induce N3 sleep for patients requiring mechanical ventilation. 

Hobbies: I am passionate about DIY projects, sightseeing/traveling, and exploring local eats. 

Photograph of Dr. Venu Parachuri

Venu Parachuri, M.D

Pronouns: He/Him

Hometown: Nizamabad

Residency: Pediatrics, Western Michigan University, Kalamazoo, MI

Fellowship: Child Neurology, Medical College of Wisconsin Affiliated Hospitals, Milwaukee, WI

Why Sleep? As a practicing pediatric neurologist for nearly 10 years, I frequently encounter children with both neurologic and sleep disorders. It has become evident to me that addressing the sleep aspect of their condition is integral to providing comprehensive care and achieving optimal outcomes.

By pursuing further training in sleep medicine, my goal is to enhance my understanding of the intricate relationship between sleep and neurological disorders. I am eager to delve deeper into the neurophysiology of sleep and the mechanisms underlying various sleep disorders. I believe that a comprehensive knowledge of sleep medicine will enable me to better diagnose and manage sleep disturbances in my pediatric patients, leading to improved treatment outcomes and enhanced quality of life.

Hobbies: Cooking, gardening, and woodworking.


M, Tanvi, MD

Tanvi H. Mukundan, MD (she/her)

Program Director

VA Sleep Physician

Assistant Professor of Pulmonary, Allergy, Critical Care, and Sleep Medicine

Residency: Oregon Health & Science University, Pediatrics

Fellowship: Oregon Health & Science University, Sleep Medicine

Why Sleep? A good night’s sleep not only can make everything feel better but is one of the most powerful things we can do for preventive health. Being able to guide my patients towards many good nights and better long-term health as a result is an honor and privilege. 

My favorite thing about Portland: Portland’s medical culture is so supportive and built around values of comradery and collegiality. Portland is also an incredible city that allows you to go for a hike filled with waterfalls during the day and finish with an incredible meal at a local restaurant to round out the night.

Jeremy Wearn, MD

Jeremy Wearn, MD (he/him)

Associate Program Director

VA Sleep Physician and Hospitalist

Assistant Professor of Pulmonary, Allergy, Critical Care, and Sleep Medicine

Residency: Tulane University, Internal Medicine

Fellowship: University of Chicago, Sleep Medicine

Why Sleep? Initially, my interest in the field was inspired by a fascination with the complex relationships in the foundational components of sleep medicine - respiratory dynamics, anatomy, cardiovascular physiology, mental health and neurodiagnostics.  In practice, I appreciate the ability to develop meaningful patient relationships that can lead to transformative impacts on health, which is driven by a shared understanding of importance of a good night’s rest and the direct impact it has on one's mental and physical health.

My favorite thing about Portland: A very friendly and approachable city with access to outstanding outdoor activities and some the country’s best food and breweries.

Boudreau, Eilis

Eilis Boudreau, MD (she/her)

VA Portland Health Care System, Staff Neurologist and Sleep Specialist

Oregon Health & Science University; Professor, Department of Neurology; Department of Medical Informatics & Clinical Epidemiology, Head Division of Bioinformatics & Computational Biology

Residency: Oregon Health & Science University, Neurology

Fellowship: NIH, National Institute of Neurological Disorders and Stroke; Epilepsy, Sleep Medicine

Why Sleep? It is a young and exciting field that is rapidly evolving and has a lot of opportunities. I also love the interdisciplinary nature of the field which challenges me to keep learning not only about new developments in neurology but also in other fields such as medicine, psychiatry, and pediatrics. 

My favorite thing about Portland: It’s a city big enough to have everything you’d want from an urban area but not so big that it’s hard to navigate. The people are super friendly. You are surrounded by very diverse geography with the beach being less than 1.5 hours to the West and the high desert being 1.5 hours to the East.

Photograph of Dr. Tracy Chisholm

Tracy Chisholm, PsyD, DBSM (she/her)

VA Behavioral Sleep Medicine Psychologist

Residency: Clinical Psychology Internship at the Captain James A. Lovell Federal Health Care Center

Fellowship: Med/Health and Rehabilitation Psychology Post-doc Fellowship at the Memphis VA Medical Center

Why Sleep: I’ve always been fascinated by the mind-body connection, particularly how just changing in our thoughts can result in measurable, physiological changes throughout the brain and body. Behavioral Sleep Medicine allows me to combine my interests in psychoneuroimmunology, neuropsychology, anxiety, TBI, and med/health psychology. The interdisciplinary nature of sleep medicine also provides endless learning opportunities. I really enjoy knowing I can offer patients proven, highly-effective treatments like CBT-I, IRT, etc., that can substantially improve their quality of life. It’s also fun teaching patients about how sleep works, and helping them find the right balance between consciously controlling sleep-promoting behaviors, while also learning how to “let go” and allowing sleep to happen.  

My favorite thing about Portland Amazing food and wide variety of outdoor activities! I also love that the community as a whole tends to value environmental conservation and supporting local businesses.

Fun extras: The world needs more providers trained in BSM! I serve as a CBT-I National Training Consultant for the VA’s EBP Roll-out Training Program. I also serve on multiple national committees, workgroups, and advisory boards as an SME on insomnia and BSM, providing guidance for training and program development, establishing professional practice standards for BSM and BSM board certification (DBSM), and leading advocacy efforts to promote patient access to these needed services.  

Jonathan S. Emens, M.D., F.A.B.S.M. Associate Professor of Psychiatry Oregon Health & Science University Staff Physician, VA Portland Health Care System

Jonathan Emens, MD, FASSM, DFAPA (he/him)

Associate Professor of Psychiatry, OHSU; Deputy Director of Mental Health, VHAPORHCS

Residency: Oregon Health & Science University, Psychiatry

Fellowship: Oregon Health & Science University, Sleep Medicine

Why Sleep? I’ve been interested in sleep since I was a child and my interest in sleep has become very much intertwined with my study of circadian physiology over the last 30+ years.  I was originally drawn to sleep out of a curiosity about the functions and nature of a complex brain-state in which we spend so much of our lives.  Later it was the near 24-hour rhythmicity in so much of our biology (and particularly in sleep and wakefulness) that captured my imagination.  Being able to apply this knowledge to help those suffering from sleep disorders is incredibly rewarding.

My favorite thing about Portland: I have a strong community of friends who live in Portland and it is a very quirky and livable city where I can walk to work year-round.

Kimberly Hutchison, MD

Kimberly Hutchison, MD, FAASM, DABSM (she/her)

Associate Professor of Neurology and Sleep Medicine

Residency: Medical University of Sleep Carolina (MUSC), Neurology

Fellowship: Vanderbilt University, Sleep Medicine

Why Sleep: I have always been interested in the brain, and in particular consciousness.  Sleep medicine gives me the chance to study the mysterious state of sleep while helping both healthy and ill patients function at their best.  

My favorite thing about Portland: My favorite thing about Portland is all the parks to run in...and the proximity to the beach…and the mountains.  The skiing!!!  Did you say one thing???

Fun Extras: Recently I have become interested in improving the patient experience in sleep apnea care on a wider scale. I am doing this by creating online educational content for patients, online support communities, and a physical product to decrease mouth leaks and dry mouth while using CPAP – The SomnoSeal. Check it out at and

I am also passionate about global health and have had a small practice on the island of Saipan in the Northern Marianas Islands since 2008. I travel to Saipan annually to see patients with an OHSU resident. Throughout the year, I read neurodiagnostic and sleep studies remotely and support the local providers via email. I once had a sleep fellow travel with me to Saipan and he had a great experience!

Raeesa Khalid, MD

Raeesa Khalid, MD (she/her)

Clinical associate, Sleep Medicine and Internal medicine, OHSU

Residency: Legacy Emmanuel Internal Medicine Residency Program

Fellowship: Oregon Healthy & Science University, Sleep Medicine Fellowship

Raeesa Khalid M.D. | Health care provider | OHSU

Why sleep: Practicing sleep medicine allows me to make a difference in my patient's lives who suffer from complex sleep issues. Improving sleep and treating sleep disordered breathing not only improve the quality of life but also prevent patients from long term complications. 

My favorite thing about Portland: My favorite thing about Portland is the access to parks, breathtaking mountains and beaches. Summer is the best time in Portland, I enjoy multiple outdoor activities with my family including hiking, berry picking, going to the different beaches. 

Miranda Lim, MD, PhD

Miranda Lim, MD (she/her)

Staff Neurologist, Portland VA

Associate Professor of Neurology

Associate Director of Layton Aging & Alzheimer’s Disease Center, OHSU

Residency: Washington University in St. Louis, Neurology

Fellowship: University of Pennsylvania, Sleep Medicine

Why Sleep? My research program centers around understanding the function of sleep - one of biology’s greatest mysteries. I am constantly thinking about why we sleep -- whether I am helping patients with neurological disorders or examining sleep across the lifespan in our preclinical animal models.

My favorite thing about Portland: Having lived previously in the Southwest, South, Midwest, and East Coast areas of the US, there is no better place than the Pacific Northwest. Portland in particular combines the best of all worlds - great weather, progressive people, low cost of living, no traffic, mountains/coast/vineyards/desert all within just a couple hours’ drive. We have a creek in our backyard and yet we live only 10 minutes from OHSU and great city life downtown. My favorite thing about Portland is everything!

Holger Link, MD

Holger Link, MD (he/him)

Professor of Pediatrics

Residency: Cleveland Clinic Children’s Hospital, Pediatrics

Fellowship: Yale New Haven Children’s Hospital, Pediatric Pulmonology

Why Sleep? Sleep chose me. I started out by reading 3-channel studies with impedance sensors and oximetry on infants in the hospital. I remember flipping through stacks of hundreds of pages, marking events with a pen, adding up the events, counting recording hours and calculating apneas per hour. Lucky for me, one of the adult psychiatrists, Dr. Bob Sacks, had established a small 4 bed sleep lab in the Hatfield research building (parents had to sleep on an exam table or sit in a rather uncomfortable chair during the study). I teamed up with one of the pediatric psychiatrists and we started doing full sleep studies in children in the lab. Over the course of a few years, we established the pediatric sleep program that is now serving children with highly complex sleep disorders.

My favorite thing about Portland: The people, the food and the outdoors

Fun extras: I am on the board of this small non-profit on mindfulness in medicine:

John Mastronarde, MD

John Mastronarde, MD (he/him)

Professor, OHSU Department of Internal Medicine

Residency:  Internal Medicine/Pediatrics at The Ohio State University Medical Center/Columbus Children’s Hospital Columbus, Ohio

Fellowship: Pulmonary/Critical Care Medicine at University of Iowa, Iowa City, IA

Fellowship:  Sleep Medicine at Oregon Health & Science University/Portland VAMC, Portland OR

Pub Med Page: mastronarde J - Search Results - PubMed (

Why Sleep? I chose sleep because it is an uncharted fascinating field of medicine! I was struck the very first time I heard “we spend a third of our lives asleep and we don’t understand why we sleep”.  There is still so much to learn about sleep medicine and the more we know the more we are finding how it much it impacts people’s lives.  As a critical care physician, I saw first-hand how important sleep is for people with critical illness and in my pulmonary medicine practice we treat sleep disordered breathing every day. So essentially, I find sleep medicine a fascinating field which impacts society in ways we continue to discover.

My favorite thing about Portland: The vast array of parks and outdoor spaces.  You can hike in the Gorge, on Mt Hood, at the Coast or just in one of the many city parks and have a great experience.

Sarah McConville, MD

Sarah McConville, MD (she/her)

Assistant Professor of Anesthesiology and Sleep Medicine-Neurology

Residency: University of Utah, Anesthesiology

Fellowship: University of Utah, Sleep Medicine

Why Sleep? Sleep is universal!  I love helping people learn about sleep and work on solutions for any sleep issues they may be having.  I especially enjoy counseling people about how sleep apnea, anesthesia and surgery can be related and how best to manage sleep problems during the perioperative period.

My favorite thing about Portland: The trees and water, and how lovely it is during summer and fall

Photograph of Dr. Christian Martin Morales

Christian Martin Morales, MD (he/him)

Medical Director, Sleep Medicine VA

Assistant Professor in Department of Medicine, Division of Pulmonary and Critical Care Medicine, OHSU

Residency: Pennsylvania Hospital, Internal Medicine

Fellowship: University of Pennsylvania Health System, Sleep Medicine

Why Sleep? I chose sleep medicine because I noted that it had far too few sleep doctors to address the highly prevalent sleep disorders. Treatment of these disorders can be life-changing to many patients.

My favorite thing about Portland: Portland has amazing summers with warm sunny days and blissfully low humidity, great for floating down the rivers. Portland also has an abundance of fruits right at arm’s reach. I love exploring the neighborhoods and picking cherries, pears, plums, and berries straight off the branch.  

Jillian Sanford, MD

Jillian Sanford, MD (she/her)

Assistant Professor of Pediatrics, Division of Pulmonology and Sleep Medicine

Medical Director, Doernbecher Pediatric Sleep Medicine Clinic

Residency: Oregon Health & Sciences University Pediatric Residency Program

Fellowship: Oregon Health & Sciences University and Portland VA Sleep Medicine Fellowship Program

Why Sleep? I enjoy being part of a multidisciplinary program that strives for excellence in teaching, research, and providing high quality care to patients.

My favorite thing about Portland: I enjoy hiking, biking, and running on the many trails that Portland has to offer.

Asha Singh, MD

Asha Singh, MD (she/her)

Assistant Professor of Neurology and Sleep Medicine

Residency: UT Southwestern Medical School, Parkland Hospital, Neurology Residency

Fellowship: Harvard Medical School, Beth Israel Deaconess Hospital, Sleep Medicine Fellowship

Asha Singh M.D. | Health care provider | OHSU

Why sleep? I chose to practice sleep medicine as a fellowship after neurology because I truly believe sleep is one of the most important modifiable processes affecting our state of health.  Sleep medicine and neurology may be the last frontiers of medicine and I am fortunate to be involved in the science underlying sleep disease processes and novel treatments.

My favorite thing about Portland: I love the coffee, food, and being able to go to skiing to the beach in one day.

Photograph of Dr. Elizabeth Super

Elizabeth Super, MD (she/her)

Associate Professor, Division of Pediatric Pulmonary and Sleep Medicine; Doernbecher Children’s Hospital, Oregon Health & Sciences University

Residency: Oregon Health & Sciences University, Pediatrics

Fellowship: Oregon Health & Sciences University, Sleep Medicine

Why Sleep? I enjoy helping children and families achieve restful and healthy sleep to improve their quality of life. Working in multidisciplinary teams to achieve better sleep and functioning for children is incredibly gratifying.

My favorite thing about Portland: Portland’s proximity to the Columbia River Gorge, Mount Hood, and the Oregon Coast enables lots of outdoor play in every season!

Photograph of Dr. Caroline Tse

Caroline Tse, MD (she/her)

Assistant Professor, OHSU Department of Neurology

Residency: Emory University, Internal Medicine, 2012

Fellowship: OHSU, Sleep Medicine, 2021

Why sleep: Sleep is an endlessly fascinating field, in which we spend a third of our lives sleeping.  Having seen the long-term health consequences of sleep disorders as an internal medicine physician, I further specialized in sleep medicine to better help those who struggle with their sleep.  Being able to help people achieve a better night of sleep is deeply rewarding. 

Favorite thing about Portland: Misty mornings, close proximity to the beach and mountains, and a beautiful place in which to raise my sons