Gregory J. Redding , MD

Professor, Department of Pediatrics, University of Washington
Chief, Pulmonary Medicine Division, Seattle Children’s Hospital

Dr. Redding received his medical degree from Stanford University after obtaining a Bachelor’s Degree in Biology at the University of California in San Diego. He completed his pediatric residency at Harbor General/UCLA and his pediatric pulmonary fellowship at the University of Colorado. In 1980, he developed the Pediatric Pulmonary Sectio. In 1992 he becameChief of the Pulmonary and Sleep Division. He is a Professor of Pediatrics and Director of the Pediatric Pulmonary Training Center grant. Dr. Redding is committed to improvement in children’s health and health care through research, training , and clinical excellence.

Dr. Redding is a nationally recognized expert and leader in pediatric pulmonary medicine; he has received the Edwin L. Kendig Award for lifetime achievements in pediatric pulmonary medicine from the American Academy of Pediatrics. His clinical scope is broad, though he is specifically interested in children with thoracic deformities/scoliosis, interstitial lung diseases, and asthma.

Dr. Redding's many research interests, include the pathogenesis of chronic lung disease in developing countries, disorders of the thoracic cage and their treatments, and interstitial lung disease in children. His philosophy on training and education is to assure independent and critical thinking and the application of physiologic principles to clinical problems. He mentors and actively promotes the success of all members and trainees within the Pulmonary Division.

Department of Pediatrics:
MCHB Spotlight, "Edwin L. Kendig Award for lifetime achievements in the field of pediatric pulmonary medicine":

Associate Director

Maida Lynn Chen , MD

Maida Lynn Chen, MD, is director of the Pediatric Sleep Center and attending physician at Seattle Childrens Hospital and associate professor in the Department of Pediatrics at the University of Washington School of Medicine. She earned her MD at Northwestern University and completed a pediatrics residency at Rush-Presbyterian-St. Luke's Medical Center. She completed her pediatric pulmonary fellowship at Children's Hospital Los Angeles, with special focus on respiratory control and sleep medicine.

Her clinical interests center on sleep disorders in infants, children and adolescents. Her research interests focus on respiratory control disorders and sleep-disordered breathing in special-needs populations, including those with fetal alcohol spectrum disorders, obesity and craniofacial anomalies. She is a member of the American Academy of Pediatrics, American Thoracic Society, American Academy of Sleep Medicine and Sleep Research Society.

Department of Pediatrics:

Nursing Faculty

Marijo M. Ratcliffe , RN, MN, DNP

Pediatric Nurse Practitioner
Lecturer, Department of Family and Child Nursing, School of Nursing

Interests: providing pulmonary specialty direct care to children with chronic pulmonary conditions and their family from infancy through teen years. Teaching advanced practice students in both the clinical and classroom arena to promote understanding of basic anatomy, physiology and pathophysiology of pulmonary conditions & management to plan for and facilitate the child’s development with a chronic condition. Facilitate/provide: family education, specialty provider partnership with Primary Care Provider and school/daycare, research collaboration, Quality Improvement programs, advocacy for legislation, systems and policies to support CSHCN.

Jennifer Sonney , PhD, ARNP, PPCNP-BC

Assistant Professor, Department of Family and Child Nursing, UW School of Nursing

I currently teach within the Doctor of Nursing Practice program, and have taught the entire spectrum of pediatric advanced practice including pediatric diagnostic health assessment, diagnosis and management of acute and chronic conditions, pediatric pharmacology, and clinical practicum courses. Another focus of my teaching is interdisciplinary training for advanced health professions trainees.

My research expertise is related to pediatric chronic illness, parent-child shared management, and cognitive capacity for children to assume self-management. I primarily focus my research on parent-child dyads; school-aged children with asthma and their parent(s). My study was the first known study to describe the discordance between parent and child asthma and asthma medication beliefs. I am now interested in testing interventions to improve parent-child shared asthma management, particularly medication adherence. I am currently the principal investigator on a pilot study for sleep shared management.

I am a board certified Pediatric Nurse Practitioner, and my clinical practice has centered around community-based pediatric care with a special emphasis on care of children with special health care needs, particularly pediatric pulmonary chronic illness.

UW SoN Faculty Profile:


Gail Kieckhefer , PhD, ARNP

PPC Nursing faculty Consultant
The Joanne Mongomery Endowed Professor

I currently teach most consistently in the Doctorate in Nursing Practice Program. I have taught advanced health assessment, child behavioral and developmental issues and practicum courses in the pediatric nurse practitioner track.

My research expertise is related to childhood chronic illness; childhood asthma most commonly and sleep in school-age children. I am interested in evidence-based strategies that enable nurses to help families to raise children to be actively participatory in their own health promotion or illness management behavior in developmentally and culturally appropriate ways. As such, my focus is often captured in the term 'shared-management' which is a more life-course appropriate concept than 'self-management' when used in the context of the developing child. I have been principal investigator on several studies examining health outcomes in children with asthma and on a randomized clinical trial examining the effects of a parent education program. In addition, I was co-investigator on two studies that recruited large number of ethnically diverse school-age children with asthma and one testing a model of educating MD residents to work more effectively with parents of children having asthma. Sleep in children has been a recent focus of her work. I and colleagues recently submitted a school-located sleep intervention research application and I am consultant on several child health related interdisciplinary grants.

School of Nursing:

Family Faculty

Carla Salldin , AA

PPC Family/Parent Consultant
A proud parent to a CSHCRN since 1995. Through the birth of my child, I have met many people, where the enrichment to my life has grown immeasurably through learning, partnering and teaching. These priceless opportunities have allowed me to gain extensive experience in resiliency, advocacy, education, leadership and partnering with families and professionals at local, regional and national levels.

A part of my work with the Pulmonary Training Center is to help families bring their voice to the faculty and trainees, enhancing partnerships and improving educational outcomes and to strengthen the foundation of incorporating Family-Centered Care principals into their work through this family partnership. I recruit families to host a healthcare trainee in their home, where the family may bring the trainee to their child’s school, have a dinner outing or a park adventure. I encourage families to participate and become advisors in an arena that is comfortable to them, to think about a partnership in their child’s healthcare and community settings. Families are a valuable asset to improving systems, education, advocacy, at any level, from the Dr. Visit to the national stage of policy making. Find your passion and speak up.

My passion is to bring families and professionals together to enhance outcomes of Family-Centered Care through education and partnership building.

Nutrition Faculty

Mari Mazon , MS, RDN, CD

Registered Dietitian Nutritionist, Center on Human Development and Disability (CHDD), University of Washington
Clinical Instructor, Department of Health Services, University of Washington

Mari Mazon completed her Master of Science in Nutritional Sciences at the University of Washington, where she also trained as a LEND nutrition trainee. She currently provides nutrition services at the CHDD Child Development Clinic, PKU Clinic, and Biochemical Genetics Clinic, and at Kindering, an early intervention center serving families in Bellevue and Bothell. As part of the nutrition training contract she receives from the Washington State Department of Health, she organizes training and continuing education opportunities for WA state registered dietitian nutritionist who work with children with special health care needs (CSHCN).

School of Public Health:

Social Work Faculty

Wendy Phipps , MSW

Social Worker | Pulmonary Clinic, Seattle Children's Hospital

Wendy received her BA in Psychology and Masters of Social Work from the University of Washington. She has been working as a medical social worker for over 10 years, with primary focus in Oncology and Pulmonary.She has a commitment to education and has served as a practicum instructor for the past 7 years.

Janice Sabin , PhD, MSW

Research Associate Professor, Department of Biomedical Informatics and Medical Education, at the University of Washington.

Dr. Sabin's area of expertise is racial/ethnic health care disparities with an emphasis on understanding mechanisms and pathways that lead to unequal treatment in health care. Dr. Sabin is one of the earliest investigators in the nation to apply the science of unconscious bias to health care disparities research. She has designed and implemented original research as principal investigator or co-investigator in academic medicine, the Indian Health Service, the Washington State community mental health system, and with national samples. Her research includes examining patient-provider communication in real-world clinic visits in Baltimore, pediatricians’ racial bias/discrimination in treatment decisions for African American and white patients, racial/weight bias among providers in the Indian Health Service, provider bias toward people with mental illnesses, and community based participatory research with African American and American Indian/Alaska Native people to develop culturally appropriate health education materials. She has developed interactive, web-based health disparities education materials for physicians and other providers. Dr. Sabin is affiliated faculty with the University of Washington, School of Medicine (UWSOM), Center for Health Equity, Diversity, and Inclusion.

Department of Biomedical Informatics and Medical Education:

Administration, Pediatric Pulmonary Center Grant

Kelly Foong , BSHA

Division Administrator, Pulmonary and Sleep Medicine, University of Washington
Kelly Foong is the Division Administrator for Pulmonary and Sleep Medicine in the Department of Pediatrics.
She has been with the University of Washington since 2000 and on the Pediatric Pulmonary Center (PPC) grant since 2012. Prior to working in Pediatrics, she worked in the Department of Medicine as the Program Manger for Thoracic/Head and Neck Oncology; School of Medicine as a Compliance Analyst for Research billing ; and the Department of Pharmacy in various roles. She worked inpatient pharmacy as the Program Lead for Harborview's Investigational Drug Services and methadone maintenance program; ambulatory pharmacy working with the sexual assault center, Harborview’s needle exchange program, to king county's tuberculosis program.

Laura Mansfield , BA

Sr. Program Coordinator, Pediatric Pulmonary Center
Laura graduated from the University of Washington with a Bachelor of Arts degree in Communication: Journalism. She came to the Division with writing and administrative support experience and joined the Pediatric and Pulmonary Center grant in 2017. In her free time, Laura enjoys spending time with family, traveling and volunteering.

Phone: 206.987.5644


Breanna Kinghorn , MD

Bre earned her MD and completed her pediatric residency at the University of Washington. Bre was a Seattle Children’s Hospital regional pediatric hospitalist and Urgent Care physician for one year, and then practiced as an inpatient pulmonary hospitalist at Seattle Children’s Hospital for two years prior to her fellowship. Her current research interests include pediatric non-CF bronchiectasis as well as pediatric interstitial lung disease.

Erin Mackintosh , MD

Dr. MacKintosh completed her medical degree at the University of California, San Diego after time as a Biomedical Engineer designing implantable medical devices and accessories. She joined Seattle Children’s Hospital for her pediatric residency and two years as an inpatient Pulmonary Hospitalist prior to pulmonary fellowship. Her professional interests include respiratory management of critically ill children and the use of technology to improve comfort and breathing for kids with chronic illness.

David Panek , MD

David earned his MD at the Keck School of Medicine of USC in Los Angeles and completed his pediatric residency at the University of Vermont Children’s Hospital in Burlington, Vermont. He is currently a first year pediatric pulmonary fellow at Seattle Children’s Hospital with professional interests in cystic fibrosis, bronchoscopy, airway anomalies, and sleep medicine.

Laura Ellington , MD

Laura received her medical degree at the Johns Hopkins School of Medicine in Baltimore, MD. She completed her residency in pediatrics at the University of Washington and stayed on as a chief resident for an additional year. She has done global health research in Peru, and her professional interests include improving respiratory care for pediatric patients in low resource settings.

Long Term Trainee

Mariah Schreven , BSN

I am Doctor of Nursing student specializing in pediatrics. I am passionate about kids and making the world a better place for them to live. I am eager to apply what I learn from the PPC in order to better the lives and communities of children with pulmonary and other chronic diseases. I am currently employed at Seattle Children's Hospital in the Clinical Research Center. I am starting my first job as a clinical instructor on the Cancer Care Unit for BSN students at Nortwest University. My background includes pediatric oncology nursing on the cancer care unit and an outpatient hematology/oncology infusion center in Chattanooga, TN. I've also served for nine months in a rural hospital in Honduras, Central America where I was challenged to grow in every aspect of nursing including teaching, autonomy, and under-served populations.

After work and school, I find rejuvenation in the outdoors and almost all activities that can be done there, including backpacking, rock-climbing and kayaking. My favorite adventure partner and greatest support is my husband, Jonathan.

Kimberly Polacek Ortiz , Pursuing MPH in Nutrition

Kim is a third-year nutrition student at the University of Washington, pursuing her Masters of Public Health in Nutrition. She is also a dietetic intern participating in the University of Washington’s Graduate Coordinated Program in Dietetics. She is completing her thesis on the association between household food insecurity and self-management of type 1 diabetes among adolescents and young adults. Her professional interests include pediatric nutrition in the acute and critical care settings, in addition to the role of nutrition in the prevention and management of chronic disease.

Charisse Timbol , BSN

Medium Term Trainee
Charisse Timbol is a third year Pediatric Nurse Practitioner student at the University of Washington. She is originally from the Philippines and moved to South Carolina at the age of 12. She then moved to Seattle to attend the University of Washington for her BSN and has decided to call it home since then. For the last 4 years, she has worked in the Pediatric Intensive Care Unit at SCH, and her experience caring for critically-ill children ultimately led her to pursue an NP degree so that she could focus on primary care and disease prevention. She is also currently working as a Student Outreach Coordinator for the UW School of Nursing where she is involved in recruitment and outreach for the graduate programs.
One of her biggest passions is increasing diversity in the field of nursing to better serve our patient population, and she hopes to use this interdisciplinary training to be more equipped to care for children with special health care needs and their families.

Lauren Cohen Schorr , BSN

Medium Term Trainee
Lauren is a third year Pediatric Nurse Practitioner Student at the University of Washington. She went to the University of Michigan where she received her BSN in 2012. She started her nursing career in Washington DC as a pediatric ICU nurse at Children's National before moving to Seattle in 2014 to continue her work in the PICU at Seattle Children's Hospital. She shifted her role at Children's to become a Certified Diabetes Educator in 2015 where she currently works. She is doing her Capstone Project on pediatric Asthma care in school-based clinics. Lauren hopes to apply the knowledge form the PPC in her future work with children who have Diabetes.