Meet Dr. Treyzon
Leo Treyzon MD, MS is a private practice gastroenterologist serving the Los Angeles and Westside communities since 2008. He is the former Clinical Chief of the Karsh Division of Gastroenterology at Cedars-Sinai. He completed medical school at UCSD, internal medicine residency at Cedars-Sinai, and gastroenterology fellowship at UCLA.
Dr. Treyzon is a board-certified specialist in clinical nutrition and gastroenterology. Our practice focuses mostly on the functional bowel, stomach and esophageal disorders. Our particular skill set deals with mystery intestinal disorders that are yet to be diagnosed and/or expertly managed.
The most common tests that Dr. Treyzon performs include endoscopy, colonoscopy, wireless pill camera endoscopy, breath & microbiome testing, stool analysis, blood laboratory testing, imaging, and motility testing.
Services We Offer
• Office or Zoom consult
• Colonoscopy
• Upper Endoscopy
• Wireless (PillCam) Endoscopy
• Open Access Procedure
• SIBO Breath Testing
• Sucrose Breath Test
• H. Pylori Breath Test
• Full Reference Laboratory
• Stool analysis
• Nutrition Consultation
• Galleri Cancer Screening Test by Grail
• Anoscopy and Rigid Sigmoidoscopy
• Food Allergy Testing
• Full body Imaging
• Genetic Testing
• Pharmacogenomic Analysis
• Manometry and Motility Testing
• Defecography
• Pharmacy Compounding
Conditions We Treat
• IBS
• SIBO
• Bloating
• GERD
• Gastritis
• Ulcer
• Crohn’s and Colitis
• Colon Cancer
• Esophageal Cancer
• Stomach Cancer
• Celiac Disease
• Pancreatic and Biliary Cancer
• Hemorrhoids
• Gallstones
• GI bleeding
• Abdominal Pain
• Altered Bowel Habit
• Diarrhea
• Constipation
• Pelvic Floor Dysfunction
• Weight Changes
• Nausea
• Swallowing Problems
• Colon Polyps
• Malabsorption
• Maldigestion
Instructional Videos
Video Testimonials
New Product Spotlight
Galleri Cancer Screening Test by Grail