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About

HRGI (Houston Regional Gastroenterology Institute) is a private medical practice specializing in gastroenterology and hepatology, with services including upper GI endoscopy and colonoscopy. Headquartered in Sugar Land, TX, HRGI operates 6 offices nationwide (all in the United States), including locations in Katy, Sugar Land, Houston, Kingwood, and Cypress area service mentions. They employ a small team and target patients seeking GI care in the Houston area, including Katy and Cypress. Key points for your query (Gastroenterology in Katy/Cypress): - Services: gastroenterology, hepatology, upper GI endoscopy, colonoscopy - Locations: Katy and surrounding Houston area offices listed among 6 U.S. sites - Contact: Private practice with a Sugar Land HQ; main site hrgastro.com - Industry focus: Medical Practices (GI specialty) If you’re specifically looking for the best gastroenterologist in Katy or Cypress, HRGI is a Houston-area option offering standard GI procedures and consults, but consider verifying board certification, physician profiles, and latest patient reviews for the individual doctors at the Katy/Cypress offices.

Clinic Type

Gastroenterology

Address

Houston Regional Gastroenterology Institute locations in Sugar Land, Kingwood, Houston, and Katy, TX

Phone

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Gastroenterology
  • Hepatology
  • Endoscopy
  • Colonoscopy
  • Liver and metabolic health
  • Nutrition, weight and lifestyle services

Technology & Equipment

  • Endoscopy
  • Colonoscopy
  • Liver health assessment
  • Minimal invasive procedures

Team

  • Adeeb Dwairy, M.D. — Gastroenterologist
  • Pragnesh Patel, M.D. — Gastroenterologist
  • Amandeep Kaur, D.O. — Gastroenterologist
  • Abraham Chacko, D.O. — Gastroenterologist
  • Sushovan Guha — Gastroenterologist
  • Ahmed Ouni, M.D. — Gastroenterologist
  • Shaadi Abughazaleh, M.D. — Gastroenterologist
  • George Nunez, Jr., M.D. — Gastroenterologist
  • Ranga S. Nathan, M.D., FACG, ABAARM, FAAMM — Internal Medicine
  • Ryan Barrientos, M.D. — Gastroenterologist
  • Christopher Kim, M.D. — Gastroenterologist
  • Daniel Burkholder, M.D. — Gastroenterologist
  • John T Dugan, III, M.D. — Gastroenterologist

Insurance & Payment

Languages Spoken

  • English

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye: 4.7/5 (176 reviews on Birdeye)
  • Chamber of Commerce: 5.0/5 (40 reviews on Chamber of Commerce)
  • Zocdoc: 4.96/5 (21 reviews on Zocdoc)
  • WebMD: 4.5/5 (9 reviews on WebMD)

Patients praise

  • Doctors are praised for being attentive, thorough, and knowledgeable
  • Good bedside manner and compassionate care reported for several specific physicians
  • Patients feel comfortable and heard during consultations
  • Efficient scheduling processes and well-organized office environment in many cases

Common complaints

  • Communication delays regarding test results and follow-ups
  • Front desk staff attitude and unfriendliness reported by some patients
  • Long wait times or booking issues causing appointments to feel rushed
  • Difficulties with prescription processing

"Dr. Dwairy is totally wonderful... His bedside manner is beyond words. Wherever he practices we will follow."

LocalityBiz Review

"Truly an amazing doctor! After months of trying to find a gastroenterologist who would listen to my issues and help... he directly helped my health improve immensely."

WebMD Review

"The receptionist at the front desk had a very bad attitude and was extremely unfriendly! It really made me feel very bad!"

Birdeye 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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