S. Ryan Greysen, MD, MHS, MA, SFHM

faculty photo
Associate Professor of Medicine at the Hospital of the University of Pennsylvania and the Presbyterian Medical Center of Philadelphia
Associate Chief, Division of General Internal Medicine, Penn
Attending Physician, Penn Presbyterian Medical Center
Attending Physician, Hospital of the University of Pennsylvania
Chief, Section of Hospital Medicine, Penn
Executive Director, Center for Evidence-based Practice, Penn Medicine
Department: Medicine

Contact information
Hospital of the University of Pennsylvania
5 Maloney, Suite 5030
3400 Spruce St.
Philadelphia, PA 19104
BA (Microbiology )
University of Texas, 1998.
MA (Medical Humanities)
University of Texas Medical Branch, 2001.
MA (History and Social Science)
University of Pennsylvania, 2003.
University of Texas Medical Branch (UTMB), 2005.
MHS (Health Services Research)
Yale University, 2011.
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Selected Publications

Sata SS, Greysen SR.: Lulled into a false sense of security: Mortality for vulnerable populations may remain elevated even during the lull between COVID-19 waves. J Hosp Med Aug 2022.

Kilaru AS, Porges SB, Grossman L, Delgado MK, Morgan AU, Chaiyachati KH, Asch DA, Greysen SR, Lockwood AC, Hemmert KC, McGinley S, Mannion N, Huffenberger AM, Bressman E, O'Connor N, Khan N, Balachandran M, Snider CK, Xiong A, Mitra N, Lee KC.: An accelerated hospital observation pathway to reduce length of stay for patients with COVID-19. Am J Manag Care Jun 2022.

Waddell KJ, Patel MS, Clark K, Harrington TO, Greysen SR.: Effect of Gamification With Social Incentives on Daily Steps After Stroke: A Randomized Clinical Trial. JAMA Neurol 79: 528-530, May 2022.

Greysen SR, Waddell KJ, Patel MS.: Exploring Wearables to Focus on the "Sweet Spot" of Physical Activity and Sleep After Hospitalization: Secondary Analysis. JMIR Mhealth Uhealth 10: e30089, Apr 2022.

Shannon EM, Cauley M, Vitale M, Wines L, Chopra V, Greysen SR, Herzig SJ, Kripalani S, O'Leary KJ, Vasilevskis EE, Williams MV, Auerbach AD, Mueller SK, Schnipper JL.: Patterns of utilization and evaluation of advanced practice providers on academic hospital medicine teams: A national survey. J Hosp Med Mar 2022.

Halpern SD, Chowdhury M, Bayes B, Cooney E, Hitsman BL, Schnoll RA, Lubitz SF, Reyes C, Patel MS, Greysen SR, Mercede A, Reale C, Barg FK, Volpp KG, Karlawish J, Stephens-Shields AJ.: Effectiveness and Ethics of Incentives for Research Participation: 2 Randomized Clinical Trials. JAMA Intern Med 181: 1479-1488, Nov 2021.

Siddique SM, Tipton K, Leas B, Greysen SR, Mull NK, Lane-Fall M, McShea K, Tsou AY.: Interventions to Reduce Hospital Length of Stay in High-risk Populations: A Systematic Review. JAMA Netw Open 4: e2125846, Sep 2021.

Pereira DE, Welch SA, Montgomery CD, Hatcher JB, Duggan MC, Greysen SR.: Low hospital mobility-resurgence of an old epidemic within a new pandemic and future solutions. Age Ageing 50: 1439-1441, Sep 2021.

Tipton K, Leas BF, Mull NK, Siddique SM, Greysen SR, Lane-Fall MB, Tsou AY.: Interventions To Decrease Hospital Length of Stay. Agency for Healthcare Research and Quality Report No.: 21-EHC015., Sep 2021.

Waddell KJ, Patel MS, Clark K, Harrington TO, Greysen SR.: Leveraging insights from behavioral economics to improve mobility for adults with stroke: Design and rationale of the BE Mobile clinical trial. Contemp Clin Trials 107(106483): doi: 10.1016/j.cct.2021.106483. Aug 2021.

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Last updated: 10/20/2022
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