Atlantic Digestive Specialists

Helping people inside & out

  • Our Physicians
    • Aristotle J. Damianos, MD
    • Roger M. Epstein, MD
    • Brian H. Hyett, MD
    • Sukeerti Kesar, MD
    • Jennifer Lewis, MD
    • Sean P. Lynch, MD
    • William E. Maher, MD
    • Khushboo Munot, MD
    • Robert A. Ruben, MD
    • Sonya Alyea, APRN
    • Shelby Menard, APRN
    • Alyssa Young, APRN
    • Robert Ketchum, PA
    • Kathy Gibson, PA
    • Kerry Loan, PA
    • Rachel Whitman, PA
    • Jenna Adams, FNP
  • Conditions
    • Acid Reflux
    • Eosinophilic Esophagitis
    • Irritable Bowel Syndrome (IBS)
    • Barrett’s Esophagus
    • Food Allergies
    • Lactose Intolerance
    • Celiac Disease
    • Esophageal Diseases
    • Liver Disease
    • Cirrhosis
    • Gallstones
    • Nausea/Vomiting
    • C. Difficile Infection (C. diff)
    • Gastroesophageal Reflux (GERD)
    • Obesity
    • Colorectal Cancer
    • GI Infections
    • Pancreatitis
    • Constipation
    • Heartburn
    • Peptic Ulcers
    • Crohn’s Disease
    • Hemorrhoids
    • Polyps
    • Diarrhea
    • Hepatitis
    • Ulcerative Colitis
    • Diverticulitis
    • Inflammatory Bowel Disease (IBD)
  • Procedures
    • Bacterial Overgrowth Breath Test (SIBO)
    • Colon Cancer Screening
    • Colonoscopy
    • Endoscopic Retrograde Cholangiopancreatography
    • Endoscopic Ultrasound (EUS)
    • Esophageal Manometry
    • Esophagogastroduodenoscopy
    • Helicobacter Pylori Breath Test
    • Lactose Intolerance Breath Test
    • Liver Biopsy
    • pH Probe Placement – Impedance
    • Photodynamic Therapy
    • Radiofrequency Ablation of Barrett’s Esophagus
    • Video Capsule Endoscopy
  • Prep Instructions
    • Colonoscopy Preparations
      • Gatorade Miralax Colon Prep Instructions
      • Mag Citrate Colon Prep Instructions
      • Moviprep Colon Prep Instructions
      • Nulytely Colon Prep Instructions
      • 5 Day Miralax/Nulytely Prep Instructions
      • OSMO Pill Colon Prep Instructions
      • Prepopik Split-Dose Colon Prep Instructions
      • Suprep Split-Dose Colon Prep Instructions
    • Sigmoidoscopy Preparations
      • Sigmoidoscopy Hospital Prep Instructions
      • Sigmoidoscopy In-Office Prep Instructions
    • Upper Endoscopy Preparations
      • Esophageal Manometry Prep Instructions
      • Upper Endoscopy Hospital Prep Instructions
      • Upper Endoscopy In-Office Prep Instructions
    • Other Preparations
      • H-Pylori Breath Test Prep Instructions
      • Lactose Tolerance Testing Prep Instructions
      • Outpatient Liver Biopsy Prep Instructions
  • For Patients
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    • Colorectal Cancer Screening Guidelines
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Seacoast New Hampshire Hepatitis C Experts

July 2, 2012 By julie

On May 19, 2012, the Centers for Disease Control and Prevention (CDC) established the first ever National Hepatitis Testing Day, to publicize the need for all baby boomers to get a one-time blood test for the hepatitis C virus (HCV).

One in 30 people born between 1945 and 1965 has been infected with hepatitis C. Most of these people are unaware that they even have the virus.

“Because there are often no symptoms, a person can silently carry the virus for years,” says Dr. Aristotle Damianos, of Atlantic Digestive Specialists in Portsmouth, NH. “While the majority of people with hepatitis C will never get significant liver disease, about 30% will develop permanent scarring or cirrhosis of the liver, and a small fraction may go on to develop liver cancer. New drug therapies have made cure possible now for most infected patients.”

HCV is a spread through direct contact with infected blood. Common risk factors include blood transfusion prior to 1992, body piercings or tattoos, and intravenous or intranasal illicit drug use. Household transmission is extremely rare. Exposure to the virus can be detected with a blood test.

Talk to your doctor about whether you should consider having this simple blood test. The physicians of Atlantic Digestive Specialists have been treating and curing patients with HCV for over 25 years. New patients are being accepted at our Portsmouth, Somersworth, and Hampton, NH offices.

Atlantic Digestive Specialists would like to welcome Marylyn Grondin to our team

November 3, 2011 By julie

Dr. Marylyn V. Grondin received her degree in Medicine from LaSalle University and a Clinical Certificate from the College of Medicine and Dentistry of New Jersey. She completed her internship and residency at Bridgeport Hospital, an affiliate of Yale University Medical School. She completed her fellowship in Gastroenterology at West Virginia University School of Medicine, where she continued on staff there as an Assistant Professor for 3 years. She established herself in private practice in the Seacoast Area in 1992. Dr. Grondin is also a Clinical Instructor of Medicine at Harvard Medical School and is board certified in Internal Medicine and Gastroenterology.

Dr. Epstein named Top Doctor by NH Magazine

May 13, 2011 By julie

Roger M. Epstein, MD

Roger M. Epstein, MD

Dr. Roger Epstein was listed as a Top Doctor in gastroenterology by NH Magazine in its April 2011 edition. The magazine sent surveys to every physician in the state and asked them to name the specialist they would recommend to their friends and family. Dr. Epstein was listed by the magazine as among the top vote recipients in gastroenterology. Congratulations, Dr. Epstein!

Colonoscopy For Dummies is now available

February 25, 2011 By julie

A free, easy-to-read guide to a potentially life-saving procedure

Hearing that you need a colonoscopy can be scary, and preparing for it may seem like a tough task. Colonoscopy For Dummies® is here to help. It is a free, easy-to-read guide about this common procedure that will teach you about what you’ll need to know when preparing for your colonoscopy.

  • Understand what a colonoscopy is—and why you may need one
  • Address your common fears and misconceptions about colonoscopy
  • Know how to plan for your colonoscopy
  • Learn how to talk with your doctor about colonoscopy

Download your FREE copy

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