The gastroenterology (GI) department at Nashoba Valley Medical Center concentrates on the diagnosis and management of the full spectrum of GI disorders through the use of state-of-the-art technologies.


Endoscopy Lab
200 Groton Road
Ayer, MA 01432

Gastroenterology Treatments at Nashoba Valley

Our GI specialists are experts at diagnosing and treating many disorders of the gastrointestinal tract, liver, gallbladder, and pancreas.

Gastroenterology Services

The GI department uses a variety of procedures and one of the most commonly performed procedures, colonoscopy, is a critical screening tool for cancer and other diseases of the colon. Endoscopic procedures are also used to diagnose gastroesophageal reflux disease (GERD) and diverticulitis.

We are also proud to offer the LINX procedure for GERD. Learn more here.

Our endoscopy lab offers a full range of clinical services, including:
  • The Olympus EVIS EXERA III endoscopy system to diagnose, detect and treat GI diseases at an earlier stage when treatments are most successful
  • Colonoscopy for colorectal cancer screening with polyp removal
  • Endoscopic procedures
  • Diagnosis and management of inflammatory bowel disease (Crohn's disease and ulcerative colitis, including the management of these diseases during pregnancy)
  • Management of Hepatitis B and C, as well as other liver diseases
  • Small bowel enteroscopy
  • Placement of feeding tubes into the stomach (PEG) or small intestine (PEJ) for patients who require supplemental feeding
  • Palliation of gastrointestinal cancers using stent placement (esophageal, colonic, duodenalor biliary)
  • Gastroscopy

Make an appointment

Schedule a Colonoscopy

To request an colonoscopy consultation online, fill out our secure form here.

To call one of our providers directly:

  • Dr. Annie Chemmanur at (508) 872-0508 
  • Dr. Michael Older at (978) 784-9425


Nashoba GI Services
Offering the most sophisticated endoscopy system in the region

Our Team