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About

Summary: Texas Digestive Disease Consultants (TDDC) is a large gastroenterology group with locations across Texas and in Louisiana. They offer comprehensive GI care (esophagus, stomach, small bowel, colon, rectum, gallbladder, pancreas, liver) and have pediatric GI services. TDDC emphasizes high-quality, compassionate care and also runs a Clinical Research Department for national trials in intestinal and liver disorders. The firm is headquartered in Southlake, TX, with multiple Texas offices and a Baton Rouge location; it is not clear from the provided highlights whether there is a New Braunfels, TX office. If you’re specifically seeking a TDDC presence in New Braunfels, TX, please confirm the current office list or request directions to the nearest TDDC location.

Clinic Type

Gastroenterology

Address

2028 Sundance Pkwy, New Braunfels, TX 78130

Phone

830-609-1933

Email

communications@gialliance.com

Opening Hours

Monday – Friday 8:00AM – 5:00PM

Emergency Care

If you are experiencing a medical emergency, please call 9-1-1.

Services Offered

  • Gastroenterology
  • Colonoscopy
  • Endoscopic procedures
  • Capsule endoscopy
  • Esophageal dilation
  • Esophageal manometry
  • EGD
  • ERCP
  • Endoscopic mucosal resection
  • Sphincterotomy
  • Hemorrhoid treatment
  • Surgical and non-surgical GI care

Technology & Equipment

  • Colonoscopy
  • Endoscopic ultrasound (EUS)
  • Capsule endoscopy
  • Endoscopic mucosal resection (EMR)
  • ERCP
  • Esophageal dilation
  • Esophageal manometry
  • EGD
  • Sphincterotomy
  • Fibroscan
  • Flexible sigmoidoscopy
  • Infusion therapy (IV)

Team

  • John Cluley, M.D. — Gastroenterologist
  • William Kern Deschner, M.D. — Gastroenterologist
  • Juan Diocares, M.D. — Gastroenterologist
  • Thomas Kepczyk, M.D. — Gastroenterologist
  • Shannon J. Marek, M.D. — Gastroenterologist
  • Matthew Meriwether, M.D. — Gastroenterologist
  • Minh Nguyen, M.D. — Gastroenterologist
  • Steven Pearce, M.D. — Gastroenterologist
  • Lori Najar, Physician Assistant — P.A.

Insurance & Payment

Phone payment, Online patient portal, Credit/debit cards, Cash, Checks

Languages Spoken

FAQs

How can I schedule an appointment?

To schedule an appointment, call 830-609-1933 or use the Message Us button for a reply within 48 hours.

Social Media

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye: 4.6 out of 5 stars (684 reviews)
  • Yelp/Apple Maps aggregate: 1.3 out of 5 stars (12 reviews)

Patients praise

  • Attentive and understanding staff
  • Physicians described as skilled, polite, and informative
  • Doctors who listen to concerns

Common complaints

  • Difficulties scheduling appointments
  • Poor communication with office staff
  • Challenges with billing department or collections
  • Language or literacy barriers with phone staff

"Danielle and staff are very attentive and understanding and they listen to your every concern with solutions."

Birdeye Review

"Cant reach anyone, thats speaks English and is literate. Had to hangup twice as person taking my call is just unintelligible."

Apple Maps/Yelp Review

"Dr. Merriweather was very very polite and informative and listened beautifully for my first visit."

WebMD 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.

More gastroenterology clinics in New Braunfels

New Braunfels, TX·Gastroenterology

GI Alliance is a private, nationwide network of gastroenterology providers focused on adult and pediatric GI health. Key details: - Industry: Hospitals and Health Care; Private, active; Parent: Cardinal Health, Inc. - Headquarters: Southlake, Texas; presence in Puerto Rico; 4 US offices (including Southlake, Allen, TX; Madison, MS) - Founded: 2018; Employees: ~523; Revenue: ~$8.5M - NAICS/SIC: 62, 621 / 80, 801 - Overview: Largest network of GI providers offering comprehensive GI services; multiple executive leaders (e.g., Chief Strategy Officer Paul Berggreen; Director-level roles across PMO, HR, Finance, Payer Relations) - Contact: Phone (972) 562-4430; Website gialliance.com; LinkedIn: linkedin.com/company/gi-alliance - Notable note: Recent activity mentions expansion through affiliated groups (e.g., Texas Digestive Disease Consultants) as of 2025 User query: Gastroenterologist in New Braunfels, TX - GI Alliance New Braunfels What this means for you: - GI Alliance is a large GI network, but the provided information does not list a New Braunfels location or gastroenterologist specifically in New Braunfels. - The closest GI Alliance footprint appears to be in Southlake/Allen, TX, and other listed US locations; no New Braunfels address is shown in the highlights. - If you specifically need a GI Alliance gastroenterologist in New Braunfels, you may want to: - Check GI Alliance’s website or LinkedIn for a physician directory or New Braunfels location. - Contact the main office at (972) 562-4430 to ask about physicians serving New Braunfels or nearby clinics. - Consider nearby GI specialists affiliated with GI Alliance or affiliated networks in Texas.

VerifiedOnline bookingEmergency careSince 2018

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