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Meet the administrative staff of the Division of Gastroenterology.


  • Jorge Marrero, MD
    Chief, Division of Gastroenterology
  • James D. Lewis, MD, MSCE
    Clinical Director, Penn Presbyterian Medical Center (PPMC)
  • Robert Stein, MD
    Clinical Director, Penn Medicine at Radnor (PMR)
  • Octavia Pickett-Blakely, MD 
    Clinical Director, Perelman Center for Advanced Medicine (PCAM)
  • Nabeel Khan, MD
    Director of GI, Philadelphia VA Medical Center
  • Steven F. Solga, MD
    GI Fellowship Director
  • Frederick A. Nunes, MD
    Clinical Director, Pennsylvania Hospital (PAH)
  • Gary Wu, MD
    Associate Chief of Research
  • David Jaffe, ND
    Director, GI Education

Endoscopy Leadership & Administration

  • Gregory G. Ginsberg, MD
    Executive Director, Endoscopic Services
  • Nuzhat A. Ahmad, MD
    Associate Medical Director of Endoscopy, HUP and PCAM
  • Jesse Green, MD
    Medical Director of Endoscopy, PPMC
  • Robert Stein, MD
    Medical Director of Endoscopy, PMR
  • Frederick A. Nunes, MD
    Medical Director of Endoscopy, PAH

Program Directors

  • Nuzhat Ahmad, MD and Shivan Mehta, MD, MBA, MSHP
    Co-Directors, GI Quality (QUIDS) 
  • Gary W. Falk, MD, MS
    Director, Esophagology and Swallowing and GI Physiology Center
  • Laurel Fisher, MD
    Director, Women in GI Committee
  • Gary R. Lichtenstein, MD
    Director, Inflammatory Bowel Diseases (IBD) Center
  • James Lewis, MD, MSCE
    Associate Director, IBD Center
    Director, Gastroenterology/Hepatology Clinical Research Program
  • Kristle Lynch, MD
    Director, GI Clinical Physiology Lab
  • K. Rajender (Raj) Reddy, MD
    Director of Hepatology
    Medical Director of Liver Transplantation
    Director, Viral Hepatitis Center
  • Octavia Pickett-Blakely, MD, MHS
    Director of the GI nutrition, Celiac Sprue and Obesity program (NCOP)
  • Christina Twyman-St.Victor, MD
    Director, Diversity and Inclusion in GI Committee

Clinical Staff

Rebecca Helgesen
Clinical Division Administrator, Division of Gastroenterology
Hospital of the University of Pennsylvania

Bernadette Mucci
Practice Manager 
Pennsylvania Hospital

Afi Peele
Practice Manager 
Penn Presbyterian Medical Center

Susan Vogt
Practice Manager 
Penn Medicine Radnor

Research Staff

Michele Fitzpatrick
Education & Faculty Affairs Manager
421 Curie Boulevard
950 Biomedical Research Building II/III
Philadelphia, PA 19104
(215) 898-0154
(215) 573-5412 (fax)

Kim Meyers-McCombs
Manager, Administration & Finance, Division of Gastroenterology and The Center for Molecular Studies in Digestive and Liver Diseases
954 Biomedical Research Building II/III
(215) 573-4264
(215) 898-0573 (fax)

Tannaz Fakheri
Grants Manager
953 Biomedical Research Building II/III
(215) 573-8557
(215) 898-0573 (fax)

Ian Pollack
Grants Coordinator, Division of Gastroenterology
955 Biomedical Research Building II/III
(215) 898-9881
(215) 898-0573 (fax)

Stephanie Kotloff
Grants Manager, Division of Gastroenterology
909 Biomedical Research Building II/III
(215) 573-1883
(215) 898-0573 (fax)

Michele Hall
Financial Administrative Coordinator, Division of Gastroenterology
955 Biomedical Research Building II/III
(215) 898-0155
(215) 898-0573 (fax)

Marielle Kent
Administrative Assistant, Division of Gastroenterology
950 Biomedical Research Building II/III
(215) 898-0850
(215) 573-5412 (fax)

Jessica Monkoski
Program Coordinator, PennCHOP Microbiome Program
908 Biomedical Research Building II/III
(215) 573-4970
(215) 898-0573 (fax)

Wade Kirkpatrick
Administrative Assistant to Gary D. Wu, MD
918 Biomedical Research Building II/III
(215) 573-4117
(215) 898-0573 (fax)

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