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

S. Ryan Greysen, MD, MHS, MA, FHM Hospitalist

Associate Professor of Medicine at the Hospital of the University of Pennsylvania and the Presbyterian Medical Center of Philadelphia

Dr. Greysen is employed by Penn Medicine.

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Clinical Specialties


  • Internal Medicine

Programs & Centers:

  • Hospital Medicine Program

Board Certification:

  • Internal Medicine, 2009

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • CVS Health
  • Devon Health Services (Americare)
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Keystone First Medicare
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • US Family Health Plan

Education and Training

Medical School: University of Texas
Residency: George Washington University Medical Center

Hospital Affiliation

Dr. Greysen is employed by Penn Medicine.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Medicine Rittenhouse Long-Term Acute Care Hospital: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.


Selected Publications:

Greysen S Ryan, Stijacic Cenzer Irena, Boscardin W John, Covinsky Kenneth E: Functional Impairment: An Unmeasured Marker of Medicare Costs for Postacute Care of Older Adults. Journal of the American Geriatrics Society 65 (9): 1996-2002,2017.

Greysen Heather M, Greysen S Ryan: Mobility Assessment in the Hospital: What Are the "Next Steps"? Journal of hospital medicine 12 (6): 477-478,2017.

Greysen Heather M, Greysen S Ryan, Lee Kathryn A, Hong Oi Saeng, Katz Patricia, Leutwyler Heather: A Qualitative Study Exploring Community Yoga Practice in Adults with Rheumatoid Arthritis. Journal of alternative and complementary medicine (New York, N.Y.) 23 (6): 487-493,2017.

Collins Sarah, Dykes Patricia, Bates David W, Couture Brittany, Rozenblum Ronen, Prey Jennifer, O'Reilly Kristin, Bourie Patricia Q, Dwyer Cindy, Greysen S Ryan, Smith Jeffery, Gropper Michael, Dalal Anuj K: An informatics research agenda to support patient and family empowerment and engagement in care and recovery during and after hospitalization. Journal of the American Medical Informatics Association : JAMIA : 2017.

Collins Sarah A, Rozenblum Ronen, Leung Wai Yin, Morrison Constance Rc, Stade Diana L, McNally Kelly, Bourie Patricia Q, Massaro Anthony, Bokser Seth, Dwyer Cindy, Greysen Ryan S, Agarwal Priyanka, Thornton Kevin, Dalal Anuj K: Acute care patient portals: a qualitative study of stakeholder perspectives on current practices. Journal of the American Medical Informatics Association : JAMIA 24 (e1): e9-e17,2017.

Portacolone Elena, Perissinotto Carla, Yeh Jarmin Christine, Greysen S Ryan: "I Feel Trapped": The Tension Between Personal and Structural Factors of Social Isolation and the Desire for Social Integration Among Older Residents of a High-Crime Neighborhood. The Gerontologist : 2017.

Shih Shirley L, Zafonte Ross, Bates David W, Gerrard Paul, Goldstein Richard, Mix Jacqueline, Niewczyk Paulette, Greysen S Ryan, Kazis Lewis, Ryan Colleen M, Schneider Jeffrey C: Functional Status Outperforms Comorbidities as a Predictor of 30-Day Acute Care Readmissions in the Inpatient Rehabilitation Population. Journal of the American Medical Directors Association 17 (10): 921-6,2016.

Greysen S Ryan, Magan Mendoza Yimdriuska, Rosenthal Jaime, Jacolbia Ronald, Rajkomar Alvin, Lee Herman, Auerbach Andrew: Using Tablet Computers to Increase Patient Engagement With Electronic Personal Health Records: Protocol For a Prospective, Randomized Interventional Study. JMIR research protocols 5 (3): e176,2016.

Harrison James D, Greysen Ryan S, Jacolbia Ronald, Nguyen Alice, Auerbach Andrew D: Not ready, not set…discharge: Patient-reported barriers to discharge readiness at an academic medical center. Journal of hospital medicine 11 (9): 610-4,2016.

Greysen S Ryan: Activating Hospitalized Older Patients to Confront the Epidemic of Low Mobility. JAMA internal medicine 176 (7): 928-9,2016.

Academic Contact Info

Hospital of the University of Pennsylvania
5 Maloney, Suite 5030
3400 Spruce St.

Philadelphia, PA 19104
Patient appointments: 800-789-7366 (PENN)