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Stephen Bagley, MD

Stephen Bagley, MD Physician

Assistant Professor of Medicine at the Hospital of the University of Pennsylvania

Dr. Bagley is employed by Penn Medicine.

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Clinical Specialties


  • Medical Oncology

Programs & Centers:

Board Certification:

  • Internal Medicine, 2014

Clinical Expertise:

  • Brain Cancer Gene Therapy
  • Brain Metastasis
  • Brain Tumors
  • Glioblastoma
  • Glioma
  • Spine Cancer

Description of Clinical Expertise

Primary brain tumors, brain metastases, leptomeningeal disease

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 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
  • Vetrans Choice Program (6/2018 Not Active)

Education and Training

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


American Association for Cancer Research, National American Society of Clinical Oncology, National Society for Epidemiologic Research, National Society for Neuro-Oncology, National

Hospital Affiliation

Dr. Bagley is employed by Penn Medicine.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.


Description of Research Expertise:

I am a medical oncologist with expertise in malignancies of the central nervous system. My research interests include immunotherapeutic approaches to glioblastoma and use of circulating biomarkers for CNS tumors.

Selected Publications:

Bagley SJ, Desai AS, Linette GP, June CH, and O’Rourke DM: CAR T Cell Therapy for Glioblastoma: Recent Clinical Advances and Future Challenges Neuro Oncology noy32 :,2018.

Bagley SJ, Kothari S, Aggarwal C, Bauml JM, Alley EW, Evans TL, Kosteva JA, Ciunci CA, Gabriel PE, Thompson JC, Stonehouse-Lee S, Sherry VE, Gilbert E, Eaby-Sandy B, Mutale F, DiLullo G, Cohen RB, Vachani A, Langer CJ: Pretreatment neutrophil-to-lymphocyte ratio as a marker of outcomes in nivolumab-treated patients with advanced non-small-cell lung cancer. Lung cancer 106 : 1-7,2017.

Bagley Stephen J, Vitale Steven, Zhang Suhong, Aggarwal Charu, Evans Tracey L, Alley Evan W, Cohen Roger B, Langer Corey J, Blair Ian A, Vachani Anil, Whitehead Alexander S: Pretreatment Red Blood Cell Total Folate Concentration Is Associated With Response to Pemetrexed in Stage IV Nonsquamous Non-Small-cell Lung Cancer. Clinical Lung Cancer 18 (2): e143-e149,2017.

Bagley SJ, Bauml JM, Langer CJ.: PD-1/PD-L1 immune checkpoint blockade in non-small cell lung cancer. Clinical Advances in Hematology & Oncology 13 (10): 676-83,2015.

Thompson JC, Yee SS, Troxel AB, Savitch SL, Fan R, Balli D, Lieberman DB, Morrissette JD, Evans TL, Bauml J, Aggarwal C, Kosteva JA, Alley E, Ciunci C, Cohen RB, Bagley S, Stonehouse-Lee S, Sherry VE, Gilbert E, Langer C, Vachani A, Carpenter EL: Detection of Therapeutically Targetable Driver and Resistance Mutations in Lung Cancer Patients by Next-Generation Sequencing of Cell-Free Circulating Tumor DNA. Clinical Cancer Research 22 (23): 5772-5782,2016.

Weiss JM, Bagley S, Hwang WT, Bauml J, Olson JG, Cohen RB, Hayes DN, Langer C.: Capecitabine and lapatinib for the first-line treatment of metastatic/recurrent head and neck squamous cell carcinoma. Cancer 122 (15): 2350-5,2016.

Bagley SJ, Kosteva JA, Evans TL, and Langer CJ.: Immune thrombocytopenia exacerbated by nivolumab in a patient with non-small cell lung cancer. Cancer Treatment Research and Communications 6 : 20-23,2016.

Bagley SJ, Sehgal AR, Gill S, Frey NV, Hexner EO, Loren AW, Mangan JK, Porter DL, Stadtmauer EA, Reshef R, Luger SM.: Acute cholecystitis is a common complication after allogeneic stem cell transplantation and is associated with the use of total parenteral nutrition. Biology of Blood and Marrow Transplantation 21 (4): 768-71,2015.

Rosenberg SA, Baschnagel AM, Bagley SJ, Housri N.: Strategies for Translating Evidence-Based Medicine in Lung Cancer into Community Practice. Current Oncology Reports 19 (1): 5,2017.

Bagley SJ, Reynolds WW, Nelson RM.: Is a "wage-payment" model for research participation appropriate for children? Pediatrics 119 (1): 46-51,2007.

View all publications

Academic Contact Info

10th Floor, South Pavilion
3400 Civic Center Blvd

Philadelphia, PA 19104
Phone: (215) 614-1858
Patient appointments: 800-789-7366 (PENN)