Live
Read more

About

Granite State Gastroenterology is a New Hampshire-based GI clinic offering general GI disorders care, inflammatory bowel disease (IBD) management, esophageal motility disorders, liver disease, and hepatitis C treatment. Headquartered in Derry with five New Hampshire offices (Derry, Raymond, Windham, Bedford, plus satellite in Derry). They emphasize patient choice and clear communication, supported by a small team of 13 staff led by gastroenterologist managing partner Dr. Leon McLean. Website traffic shows steady online presence (roughly 10k monthly visits, bounce ~0.6%). If you’re looking for GI/IBD services in the Peterborough area, Granite State Gastroenterology may be a regional option to consider, noting they primarily serve NH with multiple locations. Contact numbers: several listed (603) 437-0118, (603) 432-8802, (603) 752-6474, (603) 752-2300.

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

  • gastrointestinal disorders
  • inflammatory bowel disease
  • esophageal motility disorders
  • liver disease
  • treating Hepatitis C
  • gastroesophageal reflux treatments
  • colonoscopies
  • polyp removal
  • treatment of rectal bleeding
  • gastroduodenoscopy (upper endoscopy)
  • capsule endoscopy
  • PEG tube placement
  • acid reflux testing
  • general GI care

Technology & Equipment

  • gastroscopy/upper endoscopy
  • colonoscopy
  • capsule endoscopy
  • PEG tube placement
  • colorectal cancer screening and polyp removal
  • endoscopy equipment

Team

  • Granite State Gastroenterology team, Board Certified in Gastroenterology; four physicians and three Advanced Practice Practitioners (APPs); two APPs are Physician Assistants and one is a Nurse Practitioner — Physicians and APPs

Insurance & Payment

Cash, Credit/Debit Card, Medical Financing (e.g., PayMyDoctor), Insurance (varies by location)

Financing: PayMyDoctor financing option (link provided)

Languages Spoken

  • English

Current Offers

New patient information

Social Media

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Birdeye/Google: 5 out of 5 stars (73 reviews)

Patients praise

  • Knowledgeable, caring, and professional providers
  • Thorough patient evaluations
  • Personable bedside manner and clear communication
  • Timely appointment scheduling

Common complaints

  • Some negative feedback regarding practice operations noted in external contexts

"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"

Patient review via rater8

"He is very thorough, therefore I have confidence in his decisions regarding my health and well being."

Patient review via rater8 for Dr. Leon P. McLean

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.

More gastroenterology clinics in Peterborough

Peterborough, NH·Gastroenterology

Bedford Gastroenterology is a privately held medical practice in Bedford, NH, led by Dr. Christopher Dainiak. They offer comprehensive gastroenterology services, including colonoscopy, upper endoscopy, iron deficiency evaluation, polyp removal, esophageal motility/achalasia treatment, esophageal pH monitoring, balloon dilation, PEG tube placement, and acute GI bleeding management. The practice emphasizes patient-centered, independent care and personalized treatment. They serve Bedford and the surrounding southern New Hampshire area, with a focus on high-quality diagnostic and therapeutic GI care. Contact: 603-367-3065 / 603-367-3064.

VerifiedOnline bookingSince 2025
Peterborough, NH·Gastroenterology

Summary: - The page describes Monadnock Regional Pediatrics, a pediatric health care provider affiliated with Monadnock Community Hospital in Peterborough, NH. - Key details: small practice with 4 employees, serves pediatric patients, located in Peterborough with two offices in NH. - Not explicitly listing individual physicians (including Dr. Michael Gilbert). - For a gastroenterologist in Peterborough, NH (Dr. Michael Gilbert), this page does not confirm gastroenterology services or that Dr. Gilbert is affiliated here. You may need to check the pediatrics site for child-focused GI services or search the hospital’s medical staff directory for a gastroenterologist in Peterborough. If you’re seeking a gastroenterologist specifically: - Consider contacting Monadnock Community Hospital or checking their pediatrics/medical staff pages for GI specialists in Peterborough, NH. - You can also search for Dr. Michael Gilbert’s credentials and practice location to verify current affiliation.

VerifiedOnline booking

See all gastroenterology clinics in Peterborough

Comparing your options?

See other gastroenterology clinics in Peterborough, or search the full directory by insurance, ratings, and more.

More Gastroenterology Clinics