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Integrated Gastroenterology Consultants clinic

Integrated Gastroenterology Consultants

Gastroenterology • Chelmsford, MA • 2 outpatient centers + 3 hospital locations locations

4.8/5(1,994 reviews)

Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.

Last gathered July 11, 2026. How our information is sourced · Report incorrect information

About

Integrated Gastroenterology Consultants (IGC) is a private medical practice offering comprehensive gastroenterology care with endoscopy and colonoscopy services. They serve the Merrimack Valley and Southern New Hampshire, with a main office in Chelmsford/Lowell and a Lawrence Clinic. Key details: - Locations: Main office at 20 Research Place, Suite 220, North Chelmsford, MA 01863; Lawrence Clinic at 1 General Street, Lawrence General Hospital, Lawrence, MA 01841. Additional Chelmsford/Lowell presence. - Services: Diagnostic and therapeutic gastroenterology, endoscopy and colonoscopy, inflammatory bowel disease care, obesity medicine and weight management, liver/pancreas/gallbladder disorders, constipation, IBS, pelvic floor disorders; colon cancer screening; outpatient endoscopy at affiliated hospitals. - Team: Physicians, nurse practitioners, nurses; specialized IBD center; infusions available at Chelmsford/Lowell. - Contact: New patient inquiries at newpatient@integratedgic.com; Phone: (978) 459-6737 (main), plus other listed numbers. - Highlights: Notable for a dedicated IBD program and obesity medicine center; trained at institutions like Boston Medical Center, University of Pennsylvania, Mass General, Tufts. Active presence in North Chelmsford with expansion to Lawrence.

Services Offered

  • GI services
  • colon cancer screening
  • colonoscopy
  • upper endoscopy
  • endoscopic sleeve gastroplasty (ESG)
  • intragastric balloons
  • gastric bypass revision (TORe)
  • medical weight management
  • nutrition counseling
  • lifestyle interventions
  • non-surgical weight loss procedures
  • office visits
  • scheduling procedures

Team

  • Dr. Holzwanger, MD (specialist in advanced procedures and endoscopic weight loss) - Director of Endoluminal Surgery and Bariatric Endoscopy

Insurance & Payment

Not published.

Languages Spoken

Not published.

Pricing

  • 2 week wait times for colonoscopies, endoscopies, and office visits

Current Offers

New patient onboarding

FAQs

What services are offered?

GI services including colon cancer screening and non-surgical weight loss procedures.

Where are the centers located?

Two outpatient centers in Andover and Lowell; hospital locations in Lowell, Lawrence, and Newburyport.

Awards & Accreditations

  • Castle Connolly Top Doctors (MA)
  • National Specialty Excellence Award by Rater8
  • Voted Top Doctors by Boston Magazine
  • #1 Private Group for Top Doctors in Gastroenterology (MA) by Castle Connolly

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • WebMD Care: 5.0/5.0 (35 ratings (for Dr. Richard Tilson))
  • Birdeye (Google): 4.8/5.0 (1,959 reviews (for Gastroenterology Consultants of Lowell))

Patients praise

  • Physicians praised for being thorough, compassionate, and attentive listeners
  • Care teams described as professional, courteous, and friendly
  • Procedures explained clearly, easing patient anxiety
  • Helpful and accommodating front desk staff noted by some patients

Common complaints

  • Negative reports regarding staff professionalism and workplace environment
  • Isolated reports of dissatisfaction with care and office interactions

"Dr. Tilson has been my Gastroenterologist for over 10 years and I trust him completely"

- WebMD Care patient review

"This place is filled with Drs and staff who are incompetent unethical and vindictive."

- Yelp user review

"It was a very pleasant experience. The women at the front desk are helpful and very accommodating."

- Integrated Gastroenterology Consultants official website testimonial

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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