Our Doctors

Digestive Disease Associates of Rockland (DDAR) is a group of seven board-certified fellowship-trained gastroenterologists, two board-certified pathologists with subspecialty training in gastroenterology, and a certified nurse practitioner. Board-certified anesthesiologists and certified registered nurse anesthetists are also on premises to provide anesthesia services.

Elliot Heller 413

Dr. Elliot A. Heller

Dr. Elliot A. Heller received his BA from the University of Pennsylvania and his Medical Degree from Mount Sinai School of Medicine. He completed his Medical Internship, Medical Residency and Fellowship in Gastroenterology at Mount Sinai Hospital, NYC.

In addition to treating patients with all aspects of gastrointestinal and liver problems, Dr. Heller has a special interest in Inflammatory Bowel Disease and recently served as Chairman of the Chapter Medical Advisory Committee of the Crohn's and Colitis Foundation of Fairfield and Westchester, which includes our Rockland satellite that he co-founded.

Dr. Heller feels privileged to continue to serve the Rockland County community for their GI care.

  • Clinical Assistant in Medicine, Mount Sinai Hospital
  • Clinical Instructor, Division of Gastroenterology, Mount Sinai School of Medicine, NYC. Member of American Gastroenterology Association
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Fellow of American College of Gastroenterology
  • Board Certified in Internal Medicine and Gastroenterology
Andrew Goldenberg 413

Dr. Andrew M. Goldenberg

Dr. Andrew M. Goldenberg received his BA from Vanderbilt University and his Medical Degree from Boston University, Boston, MA graduating magna cum laude and with honors (AOA) respectively. He completed his Medical Internship and Medical Residency from Boston City Hospital, Boston, MA and his Fellowship in Gastroenterology from Mount Sinai Medical Center, NYC. Dr. Goldenberg enjoys all aspects of Gastroenterology and Liver Disease and is especially passionate about the doctor-patient relationship. He believes it is central to the practice of healthcare and serves as the foundation for the delivery of high-quality care in the diagnosis and treatment of disease.

  • Attending Physician at Good Samaritan and Nyack Hospitals
  • Attending Physician and Clinical Instructor, Division of Gastroenterology at Mount Sinai Medical Center
  • Former Chief of Gastroenterology at Nyack Hospital (2003-2006)
  • Board Certified in Internal Medicine and Gastroenterology
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Fellow of American College of Gastroenterology
Vipul Shah 413

Dr. Vipul H. Shah

Dr. Vipul H. Shah received his Bachelor's Degree from Rutgers College and his Medical Degree from University of Medicine and Dentistry of New Jersey (formerly Rutgers Medical College). He completed his Internship and Residency at Columbia-Presbyterian Medical Center, where he remained to do a Fellowship in Gastroenterology.Dr. Shah received advanced training in Endoscopic Ultrasonography, ERCP and therapeutic endoscopy while at Columbia. He currently performs these procedures at Good Samaritan and Nyack Hospitals. Dr Shah enjoys all aspects of gastroenterology and hepatology but in particular has interests in pancreatic/biliary disorders and therapeutic endoscopy.

He has built up a referral practice for such complex cases, with patients coming from the Hudson valley and beyond. However, no matter how complex or simple a patient’s situation, he believes that an open and respectful relationship is key for their prompt return to good health.

  • Chief of Gastroenterology at Nyack Hospital
  • Chief Medical Officer and Board of Advisors member of American Cancer Society, Rockland Chapter
  • Co-director of Esophageal Center at Good Samaritan Hospital performing various procedures, including radiofrequency ablation (BARRX) for Barrett's Esophagus
  • Board Certified in Internal Medicine and Gastroenterology
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Fellow of American College of Gastroenterology
  • Attending Physician at Good Samaritan and Nyack Hospitals
Yaron Langman 413

Dr. Yaron D. Langman

Dr. Yaron D. Langman received his Bachelor’s Degree from Rutgers University and his Medical Degree at the Albert Einstein College of Medicine. He completed training in Internal Medicine at Montefiore Medical Center and then served as Chief Resident. He completed training in gastroenterology at Montefiore during which time he received training in advanced endoscopic techniques such as endoscopic ultrasound and biliary endoscopy (ERCP). Dr. Langman enjoys treating a diverse range of GI diseases including liver disease, acid reflux, inflammatory bowel disease and pancreatic disease.

He strongly believes in a patient-centered approach to healing, and finds that both he and patients have better results with a collaborative approach to treatment. He practices at the forefront of innovation and has been among the first local providers to begin treating refractory or recurrent C. difficile infections with fecal microbiota transplantation.

  • Attending Physician at Nyack and Good Samaritan Hospitals
  • Board Certified in Internal Medicine and Gastroenterology
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Member of American College of Gastroenterology
Alfred Hollander 413

Dr. Alfred C. Hollander

Dr. Alfred C. Hollander received his BS degree from George Washington University in Washington, DC, and his Medical Degree from Autonomous University of Guadalajara School of Medicine, Jalisco, Mexico. He completed a rotating Internship at SUNY Stony Brook, his Internship and Residency from Mount Sinai Services Hospital Center at Elmhurst, Queens, NY and his Fellowship in Gastroenterology from Tulane University School of Medicine, New Orleans, LA where he served as Assistant Professor of Internal Medicine in Gastroenterology prior to moving to Rockland County.

Dr, Hollander is a staunch advocate of the patient-centered clinical model, which includes understanding the whole person, finding common ground, incorporating prevention and health promotion, enhancing the patient-doctor relationship and being realistic.

  • Board Certified in Internal Medicine and Gastroenterology
  • Attending Physician at Good Samaritan and Nyack Hospitals
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Member of American College of Gastroenterology
Viyada Sarabanchong 413

Dr. Viyada Sarabanchong

Dr. Viyada Sarabanchong received her Bachelor of Science degree from Brown University, and her Doctor of Medicine degree from Columbia University College of Physicians and Surgeons. After completing her Residency in Internal Medicine at Columbia-Presbyterian Medical Center in NYC, she continued her training at Columbia, completing a Fellowship in Gastroenterology. Dr. Sarabanchong practices general Gastroenterology and Hepatology, and performs Endoscopic procedures both in the office and at Good Samaritan and Nyack Hospitals. Dr. Sarabanchong continues to be an advocate for Women Preventative Health Services in the county.

  • Board Certified in Internal Medicine and Gastroenterology
  • Attending Physician at Good Samaritan and Nyack Hospitals
  • Member of American Association for the Study of Liver Disease
  • Member of American Society of Gastrointestinal Endoscopy
  • Member of American College of Gastroenterology
Deborha Caputo 413

Ms. Deborha Caputo

Ms. Deborha Caputo received her Associates Degree from Rockland Community College in Nursing, her Bachelors Degree from College of Mount St. Vincent and her Masters Degree as a Family Nurse Practitioner from Pace University. While Ms. Caputo sees patients in collaboration with all the physicians at DDAR for a variety of gastroenterology issues, she has a special interest in treating Hepatitis C. Through starting a support group for this patient population over 15 years ago when HCV treatment was still in its infancy, Ms. Caputo has been offered many challenges and rewards.

She has also been an attendee of the annual Liver Meeting for the past 13 years, and feels fortunate to work with a group of physicians at DDAR who support her interest in continuing education. A large part of her role involves patient education, as a well-informed patient makes the best choices regarding healthcare.

  • Member of American Association for the Study of Liver Disease
  • Member of American College of Gastroenterology
  • Member of Nurse Practitioner Association of New York
  • Former staff nurse at Nyack Hospital for 12 years
  • Former Instructor for home health aides at Home Aides of Rockland
  • Board Certified through American Nurses Credentialing Center
Ciril Rizk 413

Dr. Ciril Christian Rizk

Dr. Ciril Christian Rizk received his Medical Degree from Brussels Free University in Belgium and completed his Residency and Fellowship in Pathology at St. Luke’s Roosevelt Hospital Center and NYU Medical Center in New York City respectively.  Dr. Rizk is a Board Certified pathologist with over 25 years of experience in Surgical Pathology with specialty training and expertise in Gastrointestinal Pathology.  He Rizk has been an attending pathologist at NYU Medical Center-Tisch Hospital and former Director of the Pathology Department at Cabrini Medical Center.

Dr. Rizk is an advocate of the in-house pathology laboratory because it allows for curbside consultations between the gastroenterologist and pathologist, thereby promoting a higher level of quality and service to our patients.

  • Board Certified Pathologist with subspecialty training in Gastroenterology
  • Fellow of the American College of Pathology
  • Attending Physician at the NYU Medical Center

Jennifer Poterbin RN, MS; FNP-BC

Ms. Jennifer Poterbin is a Board Certified Nurse Practitioner.  Jennifer joined our practice on September 4, 2019 and bring with her a wealth of professional experience and expertise.  Over the past five (5) years, she has worked as a nurse practitioner at White Plains Hospital.  Most recently with the inpatient surgical oncology service; where she worked with an interdisciplinary team of caregivers to provide care to patients' undergoing a variety of general, colorectal, bariatric, breast and vascular surgical cases.  Prior to working with the inpatient surgical oncology team, Jennifer worked as a nurse practitioner with the outpatient surgical program. She bring with her extensive experience managing patients with a variety of gastrointestinal conditions including small bowel obstructions, acute diverticulitis, cholecystitis, appendicitis, inflammatory bowel disorders, pancreatitis, colon cancer, gastrointestinal cancers and bleeds.

Before completing her Masters of Science Degree as a Family Nurse Practitioner at Dominican College, she worked as a registered nurse in a variety of positions:  Staff Nurse, Nurse Case Manager, Nurse Case Coordinator and Nursing Supervisor. Jennifer works hand-in-hand with our physicians to manage patients' care and treatment.  Jennifer and her husband are raising their family in Rockland County; where they have resided for over twenty years.

Jang Janice 007hr5

Janice Jang MD

Dr Janice Jang will be joining our professional staff in July 2021. Dr Jang has recently completed her fellowship training in Gastroenterology at NYU Langone Medical Center.

She has a Bachelor of Science degree from MIT in Cambridge MA (June 2010 Graduate) and her Medical Doctorate from NYU Grossman School of Medicine (June 2015 Graduate) She is an active member of the American Society for Gastrointestinal Endoscopy, New York Society for Gastrointestinal Endoscopy, the American College of Gastroenterology and the American Gastroenterological Association.

Dr Jang has co-authored several peer reviewed publications during her fellowship at NYU on topics such as evaluating dysplasia in Barrett's Esophagus, prevention of post-procedure complications in IBS patients and the use of video consent for upper endoscopy and colonoscopy procedures to improve patient comprehension in a multi-lingual populations. She has a particularly strong interest in Women's GI Health issues.

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Office Information

Office Hours

Monday through Friday
Patient Procedures: 8:00AM – 5:00PM
24 hour coverage in case of emergency