The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Stephen J. Ryan sits on this spectrum.
This scientist: 444 publications — 48th percentile
48% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 1,796 publications or more.
The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Stephen J. Ryan sits on this spectrum.
This scientist: 79 D-Index — 14th percentile
14% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 217 D-Index or more.
Stephen J. Ryan was affiliated with the University of Southern California in the United States. Their research primarily focused on medicine, with significant contributions to subfields such as physiology, pulmonary and respiratory medicine, endocrine and autonomic systems, experimental and cognitive psychology, and surgery.
Their work spanned a variety of topics, including obstructive sleep apnea research, neuroscience of respiration and sleep, tracheal and airway disorders, respiratory support and mechanisms, sleep and related disorders, chronic obstructive pulmonary disease (COPD) research, and sleep and wakefulness research.
They published extensively, with frequent appearances in several key venues:
Their recent papers included the following works:
Co-authorship was a significant aspect of their research. Frequent collaborators included Ludger Grote, Jean-Louis Pépin, Özen K. Başoğlu, Jan Hedner, and Sophia Schiza.
Stephen J. Ryan was recognized as a member of the National Academy of Medicine (NAM) since 1995.
Robert B. Nussenblatt;Kamal K. Mittal;Stephen Ryan;W. Richard Green
Charles C. Barr;Mei Ying Lai;John S. Lean;Kathryn L.P. Linton
Jose A. Cardillo;J. Timothy Stout;Laurie LaBree;Stanley P. Azen
T Kohno;N Sorgente;T Ishibashi;R Goodnight
S J Ryan
Stephen J. Ryan
Shozo Sonoda;Christine Spee;Ernesto Barron;Stephen J Ryan
H Miller;B Miller;S J Ryan
Tatsuro Ishibashi;Koichiro Miki;Nino Sorgente;Randi Patterson
Toshinori Murata;Shikun He;Masanori Hangai;Tatsuro Ishibashi
Tatsuro Ishibashi;Toshinori Murata;Masanori Hangai;Ryoji Nagai
Gary W. Abrams;Stanley P. Azen;Brooks W. McCuen;Harry W. Flynn
Philip E. Cleary;Stephen J. Ryan
William L. Hutton;Stanley P. Azen;Mark S. Blumenkranz;Mei-Ying Lai
Parameswaran G. Sreekumar;Ram Kannan;Mizuki Kitamura;Christine Spee
D R Hinton;S He;M L Jin;E Barron
Peter A. Campochiaro;Paul Soloway;Stephen J. Ryan;Joan W. Miller
Philip E. Cleary;Stephen J. Ryan
Peter E. Liggett;Keith J. Pince;William Barlow;Michael Ragen
Masanori Hangai;Norihiko Kitaya;Jingsong Xu;Candy K. Chan
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