We have a strong and diverse faculty with multidisciplinary backgrounds in neurology, pulmonology, critical care medicine, pediatrics and internal medicine. 

Our faculty are devoted to fellow education and growth. Thus, each unique aspect of patient-centered care and polysomnogram interpretation will ensure that each fellow graduates to be a highly competent and skilled sleep physician.


Brief Bio

Joyce K. Lee-Iannotti, MD
Joyce K. Lee-Iannotti, MD

Program Director, Sleep Medicine Fellowship
Director, Sleep Disorders Center, Banner – University Medical Center Phoenix

Medical School: University of South Carolina School of Medicine
Residencies: Internal Medicine (Preliminary) and Neurology, Cleveland Clinic Foundation
Fellowships: Sleep Medicine, Cleveland Clinic Foundation, and Vascular Neurology, Mayo Graduate School of Medicine – Phoenix
Areas of Interest: Research niches in REM sleep behavior disorder, narcolepsy, overlap of stroke/sleep and health care disparities, education, improving care delivery, building programs (pioneering), national work with the American Academy of Neurology and the American Academy of Sleep Medicine

Steve A. Marks, DO
Steve A. Marks, DO

Site Director, Phoenix VA Medical Center

Medical School: College of Osteopathic Medicine of the Pacific
Residency: Internal Medicine, University of Arizona College of Medicine – Phoenix
Fellowships: Pulmonary Medicine Fellowship, University of California, Irvine, and Critical Care Fellowship, Mayo Clinic Rochester, MN
Areas of Interest: Resident and fellow education, PAP adherence, noninvasive ventilation, restless leg syndrome, improving care delivery and serving as the primary investigator on multiple clinical trials

Kenneth S. Knox, MD
Kenneth S. Knox, MD

Associate Dean, Faculty Affairs and Career Development, University of Arizona College of Medicine – Phoenix

Medical School: Ohio State University College of Medicine
Residency: Internal Medicine, Ohio State University
Fellowships: Pulmonary Medicine, Critical Care Medicine and Sleep Medicine, Indiana University
Areas of Interest: Editorial reviews for various medical journals, authoring and publishing peer-reviewed articles, education, health care administration, research with funding from state and federal grants, national involvement with the American Thoracic Society

Lilabeth Pineda, MD

Medical Director, Sleep Medicine Services, Phoenix VA Medical Center

Medical School: University of the Philippines College of Medicine
Residency: Internal Medicine, State University of New York Health Science Center at Brooklyn
Fellowships: Pulmonary Medicine, Critical Care Medicine and Sleep Medicine, State University of New York Health Science Center at Brooklyn
Areas of Interest: Education, hospital and health care administration, improving care delivery, serving on the IRB subcommittee, as well as the research information and protection subcommittee

Walter Castro, MD
Walter Castro, MD

Director, Banner Thunderbird Sleep Center

Medical School: San Martin de Porres University School of Medicine
Residency: Pediatrics, San Juan City Hospital
Fellowships: Pediatric Pulmonary Medicine and Sleep Medicine, Baylor College of Medicine and Texas Children’s Hospital
Areas of Interest: Education, improving patient care delivery systems, board review, improving polysomnogram review and testing for the American Academy of Sleep Medicine with a pediatric emphasis