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About

Granite State Gastroenterology is a New Hampshire-based GI clinic offering comprehensive care for general gastrointestinal disorders, inflammatory bowel disease (IBD), esophageal motility disorders, liver disease, and hepatitis C. Based in Derry with five office locations across NH (including Raymond, Windham, Bedford, and Derry), they emphasize patient choice and clear communication. Key details: - HQ: 6 Tsienneto Rd Ste 301, Derry, NH - Other offices: Raymond, Windham, Bedford - Services: GI disorders, IBD/IBS, esophageal motility, liver disease, hepatitis C - Team: 13 employees; Managing Partner/GI physician: Leon McLean; Director of Operations: Jennifer Marshall - Contact: multiple NH phone numbers; main site: granitegastro.com - Web presence: monthly visits ~10.6k; bounce rate 0.6%; US-dominant audience If you’re seeking GI care in Salem or nearby, Granite State Gastroenterology provides IBD-related management and general GI services with multiple NH locations for convenience.

Clinic Type

Gastroenterology

Address

6 Tsienneto Rd Ste 301, Derry, New Hampshire 03038, US

Phone

603-432-8802

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • general gastrointestinal disorders
  • inflammatory bowel disease
  • esophageal motility disorders
  • liver disease
  • treating Hepatitis C
  • gastroesophageal reflux treatments
  • colonoscopies
  • screen for colon cancer
  • remove polyps
  • treat rectal bleeding
  • upper endoscopy
  • capsule endoscopy
  • gastrostomy tube / PEG tube
  • diagnostic testing for acid reflux
  • liver disease care
  • irritable bowel syndrome
  • pancreatic disorders
  • anal and rectal disease

Team

  • Four physicians — Board Certified in Gastroenterology
  • Three Advanced Practice Practitioners (APPs) — Advanced Practice Practitioners (APPs)

Insurance & Payment

Languages Spoken

Social Media

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • rater8 (for Salem Gastro): 4.91/5.0 (3,000+ ratings)
  • Birdeye (for Granite State Gastroenterology): 5.0/5.0 (73 reviews)

Patients praise

  • Knowledgeable and professional medical staff (physicians, nurses, PAs)
  • Empathetic and thorough bedside manner
  • Clear and effective communication regarding medical plans
  • Clean and comfortable clinic environment

Common complaints

  • Unprofessional administrative staff treatment of patients
  • Concerns regarding unexpected or duplicate medical billing

"I was treated with so much disrespect from the Receptionist Megan... But behind the scenes though the nurses and Dr Du was outstanding!! I would take any care team like this one over any medical clinic I've been too."

LocalityBiz review of Salem Gastro

"I highly recommend Dr Lynch. She is very caring and considerate. She is easy to share your concerns with and you are never rushed. She is genuinely concerned with your care."

rater8 review of Granite State Gastroenterology provider

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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