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About

Gastroenterology at Catholic Medical Center (CMC) in Manchester, NH - CMC is a nonprofit, full-service acute care hospital with 330 beds (258 staffed) in Manchester, part of a larger New Hampshire health system. - Location: 100 McGregor Street, Manchester, NH 03102. Level III trauma, 24-hour ED, imaging and numerous subspecialties. - Gastroenterology services are part of CMC’s broad offerings, including subspecialties and diagnostic imaging. - Notable context: CMC hosts Norris Cotton Cancer Center services; the site has faced prior investigative scrutiny in 2022 related to surgical malpractice coverage concerns (external exposé, not specific to gastroenterology care today). - Quick facts: Nonprofit hospital, founded 1892, affiliated with a broader NH and international presence, and operates within a larger health system network. For direct gastroenterology appointments, contact main line or visit the CMC website.

Clinic Type

Gastroenterology

Address

100 McGregor Street, Manchester, NH 03102, US

Phone

+1-800-849-0829

Email

cmc.radsafety@cmc-nh.org

Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

Emergency care available (Catholic Medical Center)

Services Offered

  • Gastroenterology
  • Gastroenterology diagnostics and treatment
  • Capsule endoscopy
  • Colonoscopy
  • Endoscopic retrograde cholangiopancreatography (ERCP)
  • H. pylori breath test
  • Manometry
  • pH monitoring
  • Radiofrequency ablation for Barrett’s esophagus
  • Small bowel endoscopy
  • Upper endoscopy
  • Sigmoidoscopy
  • Biopsy
  • X-ray imaging

Technology & Equipment

  • Capsule endoscopy
  • Colonoscopy
  • ERCP
  • H. pylori breath test
  • Manometry
  • pH monitoring
  • Radiofrequency ablation
  • Biopsy imaging
  • X-ray imaging

Team

  • Gastroenterology Team, Not specified — Gastroenterologists

Insurance & Payment

Languages Spoken

FAQs

When should I call my doctor?

Call your doctor immediately if you have any of the following problems after your colonoscopy or upper endoscopy (specific symptoms are discussed in the FAQs).

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • US News (Catholic Medical Center Gastroenterologists): 5/5 (Overall patient experience) (19 reviews)
  • Healthgrades: 4.1/5 (Dr. Timothy Scherer) (7 reviews)
  • US News (Doctor Profile): 4/5 (Dr. Arathi Komarla) (15 reviews)
  • Vitals: 4.9/5 (Dr. Francis P. Macmillan) (13 ratings)
  • Birdeye: 2.5/5 (NH Gastroenterology) (34 reviews)

Patients praise

  • Providers perceived as thorough, knowledgeable, and personable
  • Strong bedside manner and effective communication for some physicians
  • Positive experiences with certain PA and nursing staff

Common complaints

  • Issues with administrative follow-up, communication, and appointment scheduling
  • Perceived lack of attentiveness or bedside manner in certain providers
  • Difficulty in securing timely callbacks or prescription refills

"Office poor followup, callbacks nonexistent, multiple calls for Rx NEVER filled in timely manner... Dr Scherer wonderful, office very disappointing."

Healthgrades (Patient Review)

"Dr. Macmillan performed a colonoscopy on me... he immediately put me at ease. I have full faith in Dr. Macmillan and would trust him with my life."

Vitals (Patient Review)

"The word haughty describes her 100%. Her word is gospel and DON'T EVER ask her why she chose a particular procedure... You have no say in your treatment."

Vitals (Patient Review)

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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