APPOINTMENTS
(909) 255-7200
FOR EMERGENCIES, DIAL 911
Why Choose A “GI”?
Gastroenterologists, or “GIs,” are medical specialists with extensive training in diseases of the digestive tract.
GIs can answer your questions, perform exams such as colonoscopy and upper endoscopy in making a diagnosis, and prescribe the best course of treatment to help you feel better.
PAYMENT
✓ Most Insurances
✓ Most HMOs
✓ Medi-Cal
✓ Cash Patients
Procedures
Colonoscopy
A tiny camera examines
your large intestine.
Upper Endoscopy
A tiny camera examines your
upper upper digestive system.
Esophageal Dilation
A procedure stretches the
narrow area of your esophagus.
Flexible Sigmoidoscopy
A tiny camera examines
your lower large intestine.
Office Appointments
Dr. Tieng performs her initial consultations, physical exams, and follow-up appointments at her office in Rancho Cucamonga.
Dr. Tieng and her medical assistants Pam, Tabitha, Izzy and Linda look forward to providing you with a safe, comfortable, and confidential experience.
Andrea Tieng, MD
(909) 255-7200
10801 Foothill Blvd, Suite 106
Rancho Cucamonga, CA 91730
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Inpatient & Outpatient Facilities
Dr. Tieng performs procedures at San Antonio Ambulatory Surgical Center near her office in Rancho Cucamonga and at the Mountain View Surgical Center near her office in Redlands, California.
She also maintains outpatient and inpatient privileges at major hospitals in the San Bernardino area. Her office will work with you to find the best facility for your needs.
San Antonio Ambulatory
Surgery Center
901 San Bernardino Rd, Second Floor
Upland, CA 91786
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Mountain View
Surgery Center
10408 Industrial Circle
Redlands, CA 92374
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FULL HOSPITAL LIST →
OVER THE
AGE OF 45?
FIND OUT HOW
A COLONOSCOPY
CAN SAVE YOUR LIFE.