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St. Jude Heritage Fullerton - Gastroenterology

Gastroenterology • Fullerton, CA • Since 1957

About

St. Jude Heritage Fullerton (St. Jude Medical Center) is a nonprofit, Magnet-accredited tertiary care hospital in Fullerton, California (founded 1957). It offers comprehensive gastroenterology services as part of a broader 320-bed facility serving Orange County, with advanced diagnostics and specialized care in cardiology, oncology, neurology, orthopedics, digestion, and rehabilitation. Location: 101 E Valencia Mesa Dr, Fullerton, CA 92835. Contact: 714-871-3280. Owned and operated within Providence St. Jude Medical Center (private, not-for-profit).

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Clinic Type

Gastroenterology

Address

1837 Sunny Crest Dr, Fullerton, CA 92835

Phone

714-446-5831

Email

CHI@providence.org

Opening Hours

Mon - Fri: 8 a.m. - 5 p.m.

Website

https://www.providence.org/locations/socal/fullerton-gastroenterology

Emergency Care

Yes

Services Offered

Gastroenterology
Digestive health
Endoscopy
Capsule endoscopy
Flexible sigmoidoscopy
SIBO testing
GERD evaluation
Biliary disorders
Inflammatory bowel disease
Small intestinal evaluation
Endoscopy center collaboration

Technology & Equipment

state-of-the-art equipment
endoscopy technology
Capsule endoscopy
Flexible sigmoidoscopy

Team

St. Jude Comprehensive Digestive Health Center – Fullerton Team, Board-certified — Gastroenterologists

Insurance & Payment

—

Languages Spoken

Spanish

FAQs

What services are offered at St. Jude Comprehensive Digestive Health Center - Fullerton?

Our gastroenterology program provides diagnostic and therapeutic services for gastrointestinal and biliary disorders, including inflammatory bowel disease (IBD) and GERD, with state-of-the-art equipment and innovative treatments.

What procedures are available?

Some of our services include Capsule endoscopy, Flexible sigmoidoscopy, Small intestinal bacterial overgrowth (SIBO) testing.

Is parking available?

Free parking and Wi-Fi are available.

Do staff speak languages other than English?

Some staff speak Spanish.

Social Media

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

Providence / St. Jude Heritage Medical Group website: 4.9/5 (Individual providers)
Yelp: 3.3/5 (32 reviews)
Birdeye: 4.5/5 (18 reviews)

Patients praise

Highly regarded individual physicians and nurse practitioners, noted for expertise and kindness
Attentive, friendly, and compassionate office staff and nursing team in many experiences
Clear explanations of conditions and treatments provided by several doctors
Professional and smooth procedural experiences for many patients

Common complaints

Long wait times for appointments and reaching the office by phone
Challenges with administrative communication, including billing errors and incomplete instructions
Some patients reported dismissive bedside manner from specific providers
Concerns regarding follow-up and relaying of test results
Difficulty scheduling urgent visits or getting timely callbacks

"Dr. Matthew's is so kind and caring. He always listens to me as I share my concerns and tries to give me answers I can easily understand."

— Providence St. Jude Heritage Patient Review

"OMG, I was on hold for 45 minutes. My PCP (Primary Care Physician) gave me a referral to make an appointment to see Dr. Yoon... This is just unacceptable."

— LocalityBiz Review

"This Doctor has terrible follow up. Doesn’t timely relay test results and doesn’t fully explain implications of his diagnosis."

— Healthgrades Review of Dr. Patrick Koo

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