CEP Team

The faculty and staff of CEP include clinicians, nurses, administrators, librarians, research analysts, health economists, and a biostatistician. Our multidisciplinary team is well integrated throughout UPHS and within the University setting; the team strategically attends P&T committees, CEQI committees, hospital alliances, technology committees, and more. We also collaborate worldwide with affiliate EPCs through partnerships with Cochrane and AHRQ. Get to know more about our team and their expertise below!

CEP Team

  • Ryan Greysen, MD

    Ryan Greysen, MD

    Executive Director
     Email Ryan Greysen, MD
    Read More about Ryan Greysen, MD
  • Nikhil Mull, MD

    Nikhil Mull, MD

    Medical Director
     Nikhil Mull, MD Website
    Read More about Nikhil Mull, MD
  • Rachael Rider, MHA

    Rachael Rider, MHA

    Program Coordinator
     Email Rachael Rider, MHA
    Read More about Rachael Rider, MHA
  • Matthew Mitchell, PhD

    Matthew Mitchell, PhD

    Senior Research Analyst
     Email Matthew Mitchell, PhD
    Read More about Matthew Mitchell, PhD
  • Brian Leas, MS, MA

    Brian Leas, MS, MA

    Senior Research Analyst
  • Julie Fricke, PhD

    Julie Fricke, PhD

    Research Analyst
     Email Julie Fricke, PhD
    Read More about Julie Fricke, PhD
  • Emilia Flores, PhD, RN

    Emilia Flores, PhD, RN

    Penn Pathways Program Manager
    Read More about Emilia Flores, PhD, RN
  • Shazia Siddique, MD, MSHP

    Shazia Siddique, MD, MSHP

    Associate Director for Scientific Research
     Email Shazia Siddique, MD, MSHP
    Read More about Shazia Siddique, MD, MSHP
  • Sarah D’Ambrosia, MSN, RN, CCRN-K

    Sarah D’Ambrosia, MSN, RN, CCRN-K

    Evidence Translation Analyst
    Read More about Sarah D’Ambrosia, MSN, RN, CCRN-K
  • Photo Unavailable

    Brian S. Li

    Research Analyst Intern
  • Cyrena Gawuga

    Cyrena Gawuga

    Cochrane US Mentee

Clinical Liaisons

  • Joel Betesh, MD, FACP

    Joel Betesh, MD, FACP

    Medical Director of Clinical Informatics - PAH and CCA Liaison
  • David R. Goldman MD, FACP

    David R. Goldman MD, FACP

    Emeritus Associate Professor of Medicine - CPUP Primary Care Liaison
  • Sara Holland, DNP, RN

    Sara Holland, DNP, RN

    Director of Clinical Quality CEQI, Liaison
  • Jesse Raiten, MD

    Jesse Raiten, MD

    Anesthesia and Critical Care - PPMC Liaison
  • Christian Burchill, RN

    Christian Burchill, RN

    Director of Nursing Research and Science - LGH Liaison
  • Rebecca Clark, RN

    Rebecca Clark, RN

    Nurse Scientist - PAH Liaison

Biomedical Librarians

  • Sherry Morgan, PhD, MLS, RN

    Sherry Morgan, PhD, MLS, RN

    Biomedical Library School of Nursing Liaison
  • Maylene Qiu, MA

    Maylene Qiu, MA

    Biomedical Library School of Medicine Liaison


  • Jalpa A. Doshi, PhD

    Jalpa A. Doshi, PhD

    Associate Professor of Medicine Director, CEP Economic Evaluations Unit
  • Michael Harhay, PhD, MPH

    Michael Harhay, PhD, MPH

    Assistant Professor of Epidemiology and Assistant Professor of Medicine, PSOM
     Email Michael Harhay, PhD, MPH
    Read More about Michael Harhay, PhD, MPH