Fellows - Penn Medicine

Meet the fellows of the Division of Endocrinology, Diabetes and Metabolism.

Program Director

Caitlin A. White, MD

Associate Program Director

Serena Cardillo, MD

Program Director

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First Year Fellows

Bassam AlHamer, MBChB

Medical School: Royal College of Surgeons in Ireland - Medical University of Bahrain Residency Program: Pennsylvania Hospital of the University of Pennsylvania

Diana He, MD

Medical School: JS Weill Medical College, Cornell University Residency Program: Montefiore Medical Center/Albert Einstein College of Medicine

Marah Alsayed Hasan, MBBS

Medical School: University of Limerick Graduate Medical School Residency Program: Main Line Health System/Lankenau Medical Center

Riddhi Amin, MD

Medical School: Wayne State University School of Medicine Residency Program: Rutgers - Robert Wood Johnson Medical School

Second Year Fellows

Natalie Dapas, MD

Medical School: The University of Texas Health Science Center at San Antonio Joe R. and Teresa Lozano Long School of Medicine Residency Program: MedStar Georgetown University Hospital

Raashi Mamtani, DO

Medical School: Touro College of Osteopathic Medicine - New York Residency Program: Thomas Jefferson University Hospital

Sujatha Reddy, MD

Medical School: Drexel University College of Medicine Residency Program: Hospital of the University of Pennsylvania

Marianne Riordan, MBChB

Medical School: University College Dublin School of Medicine Residency Program: University of Pennsylvania Health System, Pennsylvania Hospital

Recent Graduates

Stephane (Vie) Guerrier, MD

Attending Endocrinologist,
Pennsylvania Hospital

Medical School: Perelman School of Medicine, University of Pennsylvania Residency Program: Hospital of the University of Pennsylvania

Jessica Berman, MD

Assistant Professor of Clinical Medicine, Perelman School of Medicine, University of Pennsylvania

Medical School: Drexel University College of Medicine Residency Program: Tulane University

Patricia Yea Chu, MD

Attending, Post-doctoral Research Fellow
Children's Hospital of Philadelphia (CHOP)

Medical School: Duke University School of Medicine Residency Program: Vanderbilt University Medical Center

Pamela Anne Dolnik, MD

Assistant Professor of Medicine,
University of Illinois Hospital and Health Sciences System

Medical School: The Feinberg School of Medicine, Northwestern University Residency Program: McGraw Medical Center of Northwestern University

Nnenia Francis, MD

Assistant Professor of Medicine, University of Kentucky

Medical School: St. George’s University Medical School Residency Program: Medstar Georgetown University Hospital

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Sapir Nachum Goldberg, MD

Clinical Assistant Professor
NYU Langone Diabetes & Endocrinology Associates

Medical School: Weill Cornell School of Medicine Residency Program: New York Presbyterial Hospital/Weill Cornell Medical Center

Robert Benson Jones, Jr., MD

Clinical Assistant Professor of Medicine, Philadelphia VA Medical Center

Medical School: Tulane University School of Medicine Residency Program: Thomas Jefferson University Hospital

Jorge Jo Kamimoto, MD

Assistant Professor of Medicine, Perelman School of Medicine

Medical School: Universidad de San Martin de Porres Facultad de Medicina Residency Program: University of Arkansas Medical Sciences

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Javier Ocampo Mascaro, MD

Assistant Professor of Clinical Medicine,
Penn Medicine University City & Penn Metabolic Medicine

Medical School: Universidad Peruana de Ciencias Aplicadas (UPC) Escuela de Medicina Residency Program: University of Miami, Jackson Health System

Christie Turin More, MD

Assistant Professor, University of Colorado at Denver

Medical School: Universidad Peruana Cayetano Heredia Facultad de Medicina Alberto Hurtado Residency Program: Baylor College of Medicine

Ana Rivadeneira, MD

Assistant Professor of Medicine, Einstein Healthcare Network

Medical School: Universidad Francisco Marroquin Facultad de Medicina Residency Program: Mt. Auburn Hospital-Harvard Medical School

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Michelle Walker, MD

Assistant Professor of Clinical Medicine, Perelman School of Medicine, University of Pennsylvania

Medical School: Rutgers, Robert Wood Johnson Medical School Residency Program: Rutgers, Robert Wood Johnson

Current Endocrinology, Diabetes and Metabolism Fellows

Program Director

Caitlin A. White, MD

Serena Cardillo, MD

First Year Fellows

Bassam AlHamer, MBChB

Diana He, MD

Marah Alsayed Hasan, MBBS

Riddhi Amin, MD

Second Year Fellows

Natalie Dapas, MD

Raashi Mamtani, DO

Sujatha Reddy, MD

Marianne Riordan, MBChB

Recent Graduates

Stephane (Vie) Guerrier, MD

Jessica Berman, MD

Patricia Yea Chu, MD

Pamela Anne Dolnik, MD

Nnenia Francis, MD

Sapir Nachum Goldberg, MD

Robert Benson Jones, Jr., MD

Jorge Jo Kamimoto, MD

Javier Ocampo Mascaro, MD

Christie Turin More, MD

Ana Rivadeneira, MD

Michelle Walker, MD