Skip to main content
Mark Sostek, MD, Gastroenterology, Radnor, PA

MarkBertramSostekMDAGAF, FACG

Gastroenterology Radnor, PA

Esophagus Disease, Gastrointestinal Cancer, Gastrointestinal Functional & Motility Disorders

Executive Director, Clinical research

Dr. Sostek is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

See Dr. Sostek's full profile

Already have an account?

  • Office

    250 King of Prussia Rd
    Penn Medicine at Radnor
    Radnor, PA 19087
    Phone+1 610-902-1544

Education & Training

  • University of Florida Shands Hospital
    University of Florida Shands HospitalTraining, Antroduodenal and small bowel manometry , 1997 - 1997
  • Gastroenterology
    GastroenterologyFellowship, 1991 - 1993
  • UCLA David Geffen School of Medicine/UCLA Medical Center
    UCLA David Geffen School of Medicine/UCLA Medical CenterInternship, Internal Medicine, 1986 - 1989
  • Tufts University School of Medicine
    Tufts University School of MedicineClass of 1986, MD, Alpha Omega Alpha; Hewlett Packard Award
  • Middlebury College
    Middlebury CollegeBachelor of Arts, 1976 - 1980

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1987 - Present
  • PA State Medical License
    PA State Medical License 1998 - 2024
  • MA State Medical License
    MA State Medical License 1987 - 2001
  • American Board of Internal Medicine Internal Medicine

Awards, Honors, & Recognition

  • Fellow (AGAF) American Gastroenterological Association, 2006

Clinical Trials

Publications & Presentations

PubMed

Books/Book Chapters

Abstracts/Posters

  • Is the Prevalence of Moderate to Severe Erosive Oesophagitis (EE) More Common than we think? A Demographic Characterisation of Patients with Los Angeles Grade C...
    Fennerty MB, Johanson J, Hwang C, Hoyle P and Sostek M, United European Gastroenterology Week
  • Esomeprazole provides highly effective acid control that is equally wll maintained during sleep and active periods.
    Katz PO, Castell DO, Chen Y and Sostek MB, Am J Gastro
  • Integrated Gastric Acidity to Evaluate Acid Suppression with PPI therapy: a five way crossover comparison.
    Miner PB, Chen Y and Sostek MB, Gastroenterology
  • Join now to see all

Press Mentions

  • Northside Park Gastroenterology and Endoscopy Center Owner Dr. Michael Sue to Retire — 4 Insights
    Northside Park Gastroenterology and Endoscopy Center Owner Dr. Michael Sue to Retire — 4 InsightsJanuary 8th, 2018
  • 5 Predictions on GI in 2018
    5 Predictions on GI in 2018January 8th, 2018
  • OrphoMed Taps GI Expert Dr. Mark Sostek for CMO Position — 3 Insights
    OrphoMed Taps GI Expert Dr. Mark Sostek for CMO Position — 3 InsightsJanuary 5th, 2018

Professional Memberships