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About

Specialists in Gastroenterology is a St. Louis, MO-based health care company (LLC) with 2 offices in the United States, including its headquarters in St. Louis. The firm specializes in gastroenterology within the Hospitals and Health Care sector, employing about 15 people. Primary contact: +1 314-279-8200. Website: gidoctor.net. The company operates in medical services related to gastroenterology and has ties to various health system partners and local health networks.

Clinic Type

Gastroenterology

Address

11525 Olde Cabin Road, St. Louis, MO 63141

Phone

314-997-0554

Email

voe@gialliance.com

Opening Hours

Monday – Thursday 9:00AM – 4:00PM; Friday 9:00AM – 3:00PM

Telehealth

true

Emergency Care

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

Services Offered

  • Gastroenterology
  • Gastroenterology Services
  • Gastroenterology consultations
  • Endoscopy
  • Colonoscopy
  • Capsule Endoscopy
  • Esophageal Dilation
  • Esophageal Manometry
  • Egd (Esophagogastroduodenoscopy)
  • Endoscopic Ultrasound
  • Enteroscopy
  • Anorectal Manometry
  • Colorectal cancer screening
  • Fiberoptic procedures
  • Infusion therapy (IV)
  • Chronic care management

Technology & Equipment

  • Endoscopy
  • Colonoscopy
  • Capsule Endoscopy
  • Capsule Endoscopy – St. Louis MO
  • Endoscopic Ultrasound
  • Esophageal Dilation
  • Esophageal Manometry
  • EGD (Esophagogastroduodenoscopy)
  • Infusion Therapy IV Infusion
  • Chronic Care Management

Team

  • Soumojit Ghosh, M.D. — Gastroenterologist
  • John R. Peterson, M.D. — Gastroenterologist
  • Benjamin Root, M.D. — Gastroenterologist
  • Aman Singh, M.D. — Gastroenterologist
  • Erik Thyssen, M.D. — Gastroenterologist
  • Leonard Weinstock, M.D. — Gastroenterologist
  • Roman Hailu, N.P. — N.P.
  • Shiphie Philipose-Silva, N.P. — N.P.

Insurance & Payment

Phone payments, In-person payments, Online appointment messaging

Languages Spoken

  • English

Current Offers

Request An Appointment — null

FAQs

To schedule an appointment, how can I contact the clinic?

To schedule an appointment, please call 314-997-0554 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.

Social Media

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Yelp: 3.3 out of 5 stars (27 reviews)
  • Specialists in Gastroenterology (official practice site): 2.9 stars (48+ reviews)

Patients praise

  • Professionalism and thoroughness of care
  • Compassionate, kind, and attentive demeanor of physicians
  • Clear communication and explanation of medical procedures
  • Efficiency and friendly nature of nursing and support staff

Common complaints

  • Scheduling issues and telephone exchange system problems
  • Dissatisfaction with staff/office management professionalism
  • Instances of perceived lack of listening or dismissive communication from providers

"Staff, Nurses and Doctor caring and thoughtful. Hardly know I had a procedure."

Vitals patient review for Dr. Nikhil Banerjee

"He became upset when he was unable to answer my question and a bit hostile... this is the worst I have every experienced."

Vitals patient review for Dr. Chandra P. Gyawali

"The receptionist... decided it would be fun to schedule me for the WRONG TIME and the WRONG DOCTOR, and also blatantly lie to me... I will never be a patient of yours."

Vitals patient review for Dr. Jeffrey E. Mathews

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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