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Premier Gastroenterology Institute: Gastroenterologist in Rancho ...

Gastroenterology • San Bernardino, CA

About

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Clinic Type

Gastroenterology

Address

8300 Utica Ave, Suite 300, Rancho Cucamonga, CA 91730

Phone

(909) 360-1111

Email

info@asge.org

Opening Hours

9:00 am - 5:00 pm

Website

https://www.pgigastro.com/

Services Offered

Gastroenterology
Endoscopy
Colonoscopy
Capsule Endoscopy
Hemorrhoid Banding
Irritable Bowel Syndrome (IBS)
Crohn’s Disease
GERD
Digestive issues

Team

Dr. Deborah Negusse, M.D., M.P.H. — Founder, Board-Certified Gastroenterologist

Insurance & Payment

—

New Patients Payment Information page linked on site

Languages Spoken

English
Spanish

Pricing

Colonoscopy information page
Endoscopy information page
Capsule Endoscopy page

Current Offers

New Patient Special/Payment Information

FAQs

What should I expect during a colonoscopy or endoscopy?

Our site mentions information on what to expect during colonoscopy or endoscopy, but it does not provide a detailedFAQ-style answer here. (Please refer to the linked patient information pages for specifics.)

Social Media

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

Birdeye and Zocdoc: 4.21/5 (Dr. Deborah Negusse via Zocdoc) (64 reviews (Birdeye))

Patients praise

Friendly and helpful staff
Attentive and caring physicians
Thorough explanations of procedures

Common complaints

Billing issues
Appointment cancellations
Concerns about communication and location transparency

"Providers and staff are amazing. I arrived early for my appointment and they were able to help me early, love this office and have been going for years."

— Birdeye review

"Very shady visit. They lied about their location and only spent 3 minutes talking to me. My appointments were canceled multiple times."

— Zocdoc review

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

In the News

Dr. Nasser T. Liasi, MD - Internal Medicine Physician in San Bernardino, CA — May 14, 2026
Jason M. Tippie, PA-C - Troy, OH - Gastroenterology — May 29, 2026
Dr. Wanjun Bae, MD, Gastroenterologist | Mission Viejo, CA | WebMD — Mar 9, 2026
Ronald Omino, MD - Gastroenterology - Simi Valley Alamo Specialty Care | UCLA Health — May 27, 2026
Kelsey N. Shilt, PA-C - Troy, OH - Gastroenterology — Jun 4, 2026

Information sourced from the clinic's website as of July 10, 2026.

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