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Sarah M. Lyon, MD, MSCE

Sarah M. Lyon, MD, MSCE Physician

Assistant Professor of Clinical Medicine Assistant Professor AC

Languages spoken:

  • French

Dr. Lyon is employed by Penn Medicine.

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Clinical Specialties


  • Pulmonary Medicine

Programs & Centers:

Board Certification:

  • Critical Care Medicine, 2012
  • Pulmonary Disease, 2010

Clinical Expertise:

  • AIDS-related Pulmonary Complications
  • Critical Care Medicine
  • Lung Injury
  • Nontuberculosis Mycobacteria Lung Disease (NTM)
  • Thoracocentesis (Thoracentesis)

Description of Clinical Expertise

My clinical practice is focused on Critical Care Medicine, with a primary practice in the Medical Intensive Care Unit at the Hospital of the University of Pennsylvania. Additionally, I provide critical care, as well as pulmonary consultation at the Philadelphia VA Medical Center. My outpatient pulmonary practice at the Philadelphia VA Medical Center includes expertise in tele-health.

In addition I am a consult at the Bucks County Health Department in Tuberculosis.

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Amerihealth Caritas
  • Amerihealth Caritas Medicare
  • Cigna
  • Cigna HealthSpring
  • Clover Health Plan
  • 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
  • Oxford Health Plan
  • PA Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan

Education and Training

Medical School: Boston University School of Medicine
Residency: Hospital of the University of Pennsylvania
Fellowship: Hospital of the University of Pennsylvania


American Thoracic Society, National

Hospital Affiliation

Dr. Lyon 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.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Description of Research Expertise:

My primary research interest lies in understanding how non-clinical social determinants of health as well as organizational and policy variations impact utilization and outcomes in critical illness. I am particularly interested in understanding disparities in healthcare utilization and outcomes and hope that my research will lead to clinical and policy efforts to help reduce disparities in critical illness. My masters in clinial epidemiology thesis has focused on the impact of insurance status on ICU utilization and outcomes using Pennsylvania hospital discharge data. This project found a decreased utilization and increased 30-day mortality for uninsured critically ill patients. I expanded on this research with an F32 NIH grant to examine how MA insurance reform impacted critical care utilization and outcomes.

Selected Publications:

Sarah M Lyon and Milton Rossman: Pulmonary Tuberculosis Tuberculosis and Nontuberculous Mycobacterial Infections, Seventh Edition. 5 (1): 2017.

Lyon SM, Moore N, Douglas IS, Cooke CR: Update on the Affordable Care Act. King v. Burwell and Obergefell v. Hodge Annals ATS 13 (4): 2016.

Lyon SM, Douglas IS, Cooke CR: Health Policy: Toward Achieving Respiratory Health Equality Achieving Respiratory Health Equality : 2016.

Aureimma CL, Lyon SM, Strelec LE, Kent S, Cooney E, Barg FK, Halpern SD: Defining the medical intensive care unit in the words of patients and family members: a freelisting analysis American Journal of Critical Care 24 (4): e47-55,2015.

Reid Michael J A, Biller Nancy, Lyon Sarah M, Reilly John P, Merlin Jessica, Dacso Matthew, Friedman Harvey M: Reducing risk and enhancing education: U.S. medical students on global health electives. American journal of infection control 42 (12): 1319-21,2014.

Lyon SM, Auriemma C, Hilbert C, Cooney B, Strelect L, Kent S, Barg FK, Halpern SD.: Defining Patient- and Surrogate-Centered Outcomes for Critical Care Research. Mini-symposium presentation. American Thoracic Society, San Diego, CA. Oral presentation. : 2014.

Lyon Sarah M, Douglas Ivor S, Cooke Colin R: Medicaid expansion under the Affordable Care Act: Implications for insurance-related disparities in pulmonary, critical care and sleep. Annals American Thoracic Society 11 (4): 661-7,2014.

Lyon Sarah M, Wunsch Hannah, Asch David A, Carr Brendan G, Kahn Jeremy M, Cooke Colin R: Use of intensive care services and associated hospital mortality after Massachusetts healthcare reform*. Critical Care Medicine 42 (4): 763-70,2014.

Mikkelsen Mark E, Shah Chirag V, Meyer Nuala J, Gaieski David F, Lyon Sarah, Miltiades Andrea N, Goyal Munish, Fuchs Barry D, Bellamy Scarlett L, Christie Jason D: The epidemiology of acute respiratory distress syndrome in patients presenting to the Emergency Department with severe sepsis. Shock 40 (5): 375-81,2013.

Lyon SM, Sahli, RA, Reilly, PM, Carr BG: A national analysis of the impact of insurance status on trauma outcomes. Academy Health, Orlando, FL. Poster presentation. : 2012.

Academic Contact Info

5012 Gibson
Division of Pulmonary, Allergy and Critical Care Medicine
Hospital of the University of Pennsylvania
3600 Spruce Street

Philadelphia, PA 19104
Phone: (617) 851-3432
Patient appointments: 800-789-7366 (PENN)