Granite State Gastroenterology

Gastroenterology • Peterborough, NH • Multiple locations locations

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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. 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.

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Clinic Type

Gastroenterology

Address

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

Phone

603-432-8802

Email

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Opening Hours

Not published — contact the clinic to confirm hours.

Website

http://granitegastro.com/

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

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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

Facebook Instagram

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].

In the News

Granville Health System Expands Community Access to Gastroenterology Services with New Endoscopy Center Opening - Granville Health System — Oct 6, 2025

Information sourced from the clinic's website as of July 11, 2026. Own this clinic? Claim or correct this listing.