Department of Medicine Facts & Faculty

Established in 1907, Saint Peter’s University Hospital is a Roman Catholic hospital sponsored by the Diocese of Metuchen. It is a major clinical affiliate of the Rutgers Biomedical and Health Sciences at Rutgers, the State University of New Jersey. 

The Department of Internal Medicine is the largest department at Saint Peter’s. A diverse and experienced clinical faculty teaches the core of our program and provides training to the 51 Internal Medicine residents. 

The following provides a brief overview of the clinical faculty 

Vital Statistics

Hospital established


Residency established


Saint Peter’s University Hospital

478 Beds


20 Beds

Department of Medicine

120 Beds

Teaching Service

50-60 Beds

Internal Medicine Outpatient Clinic

14,000 Visits per year

Full accreditation by ACGME.

Next site visit 2017.

ABIM Pass Rate

100% 2013-2014

Number of Residents




Rutgers Fellowships:

GI, Endocrinology

Number of Full time Faculty


Number of Part time Faculty


Academic Affiliations

  • Rutgers – Robert Wood Johnson Medical School
  • Rutgers Ernest Mario School of Pharmacy, Rutgers Business School

Nayan Kothari, MD, MACP, FRCP, (Edin), FACR
Chair, Department of Medicine
Chief Academic Officer, Saint Peter’s University Hospital
Program Director, Internal Medicine Residency

Dr. Kothari is a board certified internist and rheumatologist. He is a leading educator and was a member of Step 2 Committee of the National Board of Medical Examiners. Dr. Kothari was a member of the Test Developing Committee of the Educational Council for Foreign Medical Graduates from 1996 to 2003. He has received several teaching awards from the Robert Wood Johnson Medical School, Drexel University College of Medicine, The Edward J. Ill Outstanding Medical Education Award from the Excellence in Medicine Foundation, and the Academic Award from the Middlesex County Medical Society. Most recently he received the Mastership from the American College of Physicians. Prior to 2005, Dr. Kothari directed the Robert Wood Johnson Medical School Internal Medicine residency program for 17 years.

C.S. Pitchumoni, MD, MACP, MACG

C.S. Pitchumoni is Associate Program Director of the Internal Medicine Residency Program and Chief of Division of Gastroenterology, Hepatology, and Clinical Nutrition.

He  has more four decades of teaching experience and has been recognized as an excellent teacher by students, residents, and fellows in Gastroenterology. He is board certified in Internal Medicine, Gastroenterology and Clinical Nutrition, and has a Masters in Public Health.

He is Adjunct Professor of Medicine at New York Medical College and Clinical Professor of Medicine at Rutgers, Robert Wood Johnson Medical School and Drexel University College of Medicine. He has been nationally recognized by American College of Physicians as well as American College of Gastroenterology with Mastership of the colleges. He has authored over 200 publications and 100 chapters in various textbooks. His research in the field of pancreatic diseases is recognized by various professional organizations and he is on the editorial board of a number of journals. He has edited four major text books in gastroenterology.

Dr. Pitchumoni came to Saint Peter’s University Hospital in 2002 after many years if experience in teaching, research, and administration at New York Medical College.


Marygrace Zetkulic, MD

Associate Program Director

Dr. Zetkulic’s interests are in medical education research. She is currently involved in a multinational study on different methods of providing feedback to residents to improve professional growth. In addition, she is very active in the Foundation for the Advancement of International Medical Education and Research (FAIMER).  FAIMER is founded by the ECFMG to improve and expand medical education in other countries. She has worked with faculty in Cairo, Egypt to develop faculty development programs in Ghana and also worked on a project to develop inexpensive medical simulation techniques to improve the clinical skills of the students at the University of Ghana. 

Amar Bukhari, MD

Dr. Amar S. Bukhari is chief of the Division of Pulmonary, Critical Care and Sleep Medicine, Saint Peter’s University Hospital and chairman of its Ethics Committee. His tenure at Saint Peter’s started in 1997. He is a member of various committees including Sepsis, Transfusion, Anticoagulation/Venous Thromboembolism, Pharmacy and Therapeutics, Internal Medicine Review, Pneumonia, Safety and Allied Health Professional. Dr. Bukhari also serves as the medical director for Respiratory Care, Adult Intensive Care Units and the Claims Review Committee. His areas of  interest include care of pregnant patients with pulmonary diseases, advanced care in asthma, care at the end-of-life and critical care in obstetrics. In addition to his clinical and administrative work, he enjoys teaching students, physicians in residency training, and nurses.

Erinn Beagin, MD

Dr. Beagin is chief of the Division of Geriatrics. She is board certified in Internal Medicine, Geriatric Medicine and Hospice and Palliative Care. Dr. Beagin worked in both academic medicine and private practice before joining Saint Peter’s University Hospital in 2013. She is a member of the Ethics Committee and the Internal Medicine Review Committee. Dr. Beagin is also a certified medical director and serves as the medical director for Parker at Monroe Long Term Living Community and is the medical director for Seasons Hospice of New Jersey. Her outpatient practice is in Monroe, New Jersey and she attends to patients in long-term care facilities in the surrounding area. Dr. Beagin enjoys providing students and residents a hands-on practical approach to geriatric education.

Ann Marie Van Hoven, MD

Dr. Van Hoven has been a constant at Saint Peter’s University Hospital for more than 10 years. Dr. Van Hoven holds several titles at Saint Peter’s, including chair of the Clinical Competency Committee, director of the Metabolic Unit, Third Year Medicine Clerkship director, director of the Endocrine Residency Elective, and Endocrinology Fellowship Site Director. She has won numerous awards for teaching and professionalism. 

Subspecialty Education Coordinators

Critical Care
Haris Rana, MD

Ann Marie Van Hoven, MD

C. S. Pitchumoni, MD

Infectious Disease
David Alcid, MD

Amar Bukhari, MD

Dinesh Singal, MD

Jeff Greenberg, MD

Paul Sterman, MD

Hermant Kesarwala, MD

Esther Schlesinger, MD

General Internal Medicine
Alejandro Herrera, MD

Erinn Beagin, MD

Marcus Porcelli, MD

Subscribe to Our Newsletter

Subscribe to the Saint Peter's Better Health newsletter and receive the latest health news, community events, recipes, and more.

Support Saint Peter’s

Your gift of any size directly impacts the patients who are cared for at Saint Peter's. Donate TodayLearn More