Gastrointestinal Services

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Gastrointestinal Services

Personalized, high quality care

Roger Kao, MD, Gastroenterology

Gastroenterologists specialize in the field of digestive disorders and liver diseases. The physicians provide a full array of diagnostic and therapeutic endoscopic services, while providing personalized and high quality medical care to all patients.

GI endoscopic procedures are:

• Upper endoscopy (EGD)
• Colonoscopy
• Flexible sigmoidoscopy
• Endoscopic retrograde cholangiopancreatography (ERCP)
• Ambulatory 48 hour pH testing (BRAVO)
• Small bowel capsule endoscopy (pill camera)
• Endoscopic mucosal resection (EMR)
• Percutaneous gastrostomy tube placement (PEG)
• Endoscopic ultrasound (EUS)
• Endoscopic celiac nerve block

Physicians specializing in gastroenterology:
- Betty M. Ho, M.D.

- Roger Kao, M.D.

- Cynthia Leung, M.D.

- Scott D. Levenson, M.D.

- Edward Onuma, M.D.

- Daniel Rengstorff, M.D.

- James D. Torosis, M.D.

- Rahul Verma, M.D.

- Vicky W. Yang, M.D. 

All physicians are independent practitioners and not employees of the Hospital.

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Sequoia Hospital
170 Alameda de las Pulgas
Redwood City, CA 94062
(650) 369-5811