Ken D. Nguyen, MD · Oct 22, 2026
Abdominal Ultrasound: Preparing for Your Test
Abdominal ultrasound uses sound waves to look at the liver, gallbladder, pancreas, and more. No needles or radiation. How to prepare, what to wear, and how long it takes.
Dana Pan, MD, MHA · Jun 21, 2018
Endoscopic Ultrasound (EUS): Uses, Preparation, and What to Expect
Endoscopic ultrasound (EUS) combines endoscopy and ultrasound to examine the pancreas, bile ducts, and digestive tract wall and take needle biopsies. Learn the uses, prep, and where to have it done.
Dana Pan, MD, MHA · Jun 21, 2018
ERCP: Treating Bile Duct Stones and Blockages Without Surgery
ERCP (endoscopic retrograde cholangiopancreatography) removes bile duct stones, opens blockages with stents, and treats some causes of pancreatitis without surgery. Learn how it works, risks, and recovery.
Ken D. Nguyen, MD · Oct 23, 2026
Gallstones, Gallbladder Disease, and Pancreatitis
Gallstones can cause pain, bile duct blockage, and pancreatitis. Learn the symptoms, emergency warning signs, and treatments including ERCP and gallbladder surgery.
Ken D. Nguyen, MD · Oct 22, 2026
Pancreatic Cysts: What to Do When One Is Found
Pancreatic cysts are often found by chance on a CT or MRI. Most are harmless, but some need monitoring. Learn the types, follow-up tests, and when EUS is used.PPO & Medicare welcome
Our board-certified gastroenterologists are in network with most PPO plans, including Aetna, Anthem Blue Cross, Blue Shield of California, Cigna, and UnitedHealthcare, plus Medicare. Most PPO plans need no referral, and healthy adults 45 and older can often schedule a screening colonoscopy without an office visit.