Endoscopic procedures are performed at Valley Digestive Health Center and USC Arcadia Hospital in Arcadia. Liver elastography (FibroScan), ultrasound, and capsule studies are done in our Temple City office.
The physicians at Unio Specialty Care - Temple City are trained and experienced in multiple gastrointestinal (GI) procedures. Here are some of the procedures we perform. Our physicians wrote the articles below to help you learn more.
Ken D. Nguyen, MD · Oct 22, 2026
24-Hour pH Testing: Measuring Acid Reflux
Esophageal pH testing measures how often acid reflux happens and whether it matches your symptoms. Used for heartburn that doesn't respond to medicine and before reflux surgery.
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.
Ken D. Nguyen, MD · Oct 22, 2026
Esophageal Manometry: Testing How Your Esophagus Works
Esophageal manometry measures the pressure and coordination of the esophagus muscles. Used for trouble swallowing, achalasia, chest pain, and before reflux surgery.
Ken D. Nguyen, MD · Oct 22, 2026
Flexible Sigmoidoscopy: What to Expect
Flexible sigmoidoscopy examines the rectum and lower colon with a simpler prep than colonoscopy, usually a Fleet enema. Why it's done, how to prepare, and recovery.
Ken D. Nguyen, MD · Oct 25, 2026
Lactulose Breath Test for SIBO and Sugar Intolerance
A lactulose breath test checks for SIBO at home with the FoodMarble MedAIRE. The same device tests lactose, fructose, sorbitol, inulin, and sucrose intolerance.
Ken D. Nguyen, MD · Oct 22, 2026
Liver Elastography (FibroScan): A Painless Test for Liver Fat and Scarring
Liver elastography (FibroScan) measures liver stiffness and fat in about 10 to 15 minutes, with no needles. Who needs it, how to prepare, and what results mean.
Ken D. Nguyen, MD · Oct 22, 2026
Motility Capsule Test: Measuring How Your Gut Moves
The motility capsule test measures how fast food moves through the stomach, small intestine, and colon. Used for gastroparesis and severe constipation. Prep and what to expect.
Ken D. Nguyen, MD · Oct 22, 2026
Small Bowel Enteroscopy: Looking Deeper Into the Small Intestine
Enteroscopy uses a longer endoscope to examine and treat the small intestine, often for bleeding or anemia found on capsule endoscopy. How to prepare and what to expect.
Ken D. Nguyen, MD · Nov 18, 2023
Capsule Endoscopy (NaviCam Small Bowel with AI ProScan)
Capsule endoscopy uses a swallowed camera to examine the small intestine. We use the NaviCam Small Bowel capsule with AI-assisted ProScan reading. Learn why it's done, how to prepare, and what to expect.
Ken D. Nguyen, MD · Jun 21, 2018
Hemorrhoid Banding (Rubber Band Ligation): How It Works, Results, and Risks
A detailed look at hemorrhoid banding (rubber band ligation): why it is painless, who is a candidate, how the CRH O'Regan suction ligator works, results compared with other treatments, risks, and aftercare.
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.
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.
Ken D. Nguyen, MD · Jun 20, 2018
Colonoscopy: What to Expect, Prep, and Recovery
Colonoscopy is the best test to find and prevent colon cancer. Learn why it is done, how to prepare, what to expect, and recovery. Screening starts at 45. Temple City and Arcadia.
Ken D. Nguyen, MD · Jun 17, 2018
Upper GI Endoscopy (EGD): Why It's Done and What to Expect
Upper endoscopy (EGD) examines the esophagus, stomach, and duodenum to diagnose and treat reflux, ulcers, bleeding, and swallowing problems and to screen for stomach cancer. Learn how to prepare.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.