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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. If you’re specifically seeking care in Chelmsford, the Chelmsford/Lowell main office (20 Research Place, North Chelmsford) is the primary location within IGC.

Clinic Type

Gastroenterology

Address

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

Phone

+1 978-459-6737

Email

newpatient@integratedgic.com

Opening Hours

Hours Monday–Friday 7:30am–4:30pm

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

Languages Spoken

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.

New Patient & Consent Forms, Billing, & Meal Replacement Information

(Not provided in the excerpt; not enough to form a complete FAQ answer)

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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Summary: Gastro Health is a private hospitals and health care group specializing in digestive and liver disorders, led by board-certified gastroenterologists. Founded in 2006 and headquartered in Miami, FL, it operates 81 US offices and has 622 employees. The organization is backed by private equity (OMERS Private Equity, with prior rounds from Audax and Penfund) and reported annual revenue of about $71.7 million with total funding of $100 million. While the provided page highlights the firm’s national footprint and services in gastroenterology, hepatology, colorectal surgery, and advanced endoscopy, specific information about a Chelmsford location is not listed on the page. If you’re seeking a Gastro Health clinic in Chelmsford, MA, this site does not show a Chelmsford address; you may need to search for nearest Gastro Health locations in Massachusetts or contact their main line for referral options.

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