Gastroenterologists specialise in the digestive system: stomach, intestines, liver and pancreas. Below are 28 gastroenterologists practising in New Hampshire, across Lebanon, Manchester, Concord, Nashua, Somersworth and Keene, with what to bring and ask so your visit counts.
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Listings come from the CMS NPPES NPI Registry, the public federal record of licensed providers, checked October 2026. Being listed is not a recommendation or an endorsement, and we do not receive anything from these doctors. Call the office to confirm insurance, availability and that they are accepting new patients. In an emergency, call 911.
After your visit
Digestive problems are about patterns: which meals, which days, how long. A symptom diary kept for a few weeks is often the single most useful thing you can bring back to your gastroenterologist. Emerge Care, free to download on iPhone, is built for exactly that: tell it how you feel in your own words, get plain answers with the source behind every fact, and walk into your next gastroenterologist appointment in New Hampshire with a one-page summary and your questions ready.
Emerge Care never diagnoses or replaces your doctor.
This page lists 28 gastroenterologists practising in New Hampshire, including Lebanon, Manchester, Concord, Nashua, Somersworth and Keene, from the federal NPI Registry. Call the office to confirm they take your insurance and are accepting new patients.
It depends on your insurance plan, not the state. HMO plans usually need a referral from your primary care doctor; many PPO plans do not. Check with your plan before booking.
A list of everything you take, including supplements, with how often; Your insurance card and photo ID; Recent lab results or imaging reports, if another clinician ordered them; A food and symptom diary from the last two to four weeks.
US guidelines generally recommend starting at 45 for people at average risk, earlier with a family history. Ask your doctor what fits you.
Yes, if you can. Two to four weeks of meals and symptoms helps your doctor see patterns quickly.
Works with Apple Health and Apple Watch. Your health records stay on your phone.