Leonard B Weinstock, MD Gastroenterology

Dr. Leonard B Weinstock, MD

Gastroenterology, Internal Medicine
Saint Louis, MO 63141
Accepting New Patients Visit Website
(314) 997-0554

About Dr. Leonard B Weinstock MD

Dr. Leonard B Weinstock, MD is a doctor primarily located in Saint Louis, MO. He has 40 years of experience. His specialties include Gastroenterology, Internal Medicine.


Specialists In Gastroenterology 11525 Olde Cabin Rd Saint Louis, MO 63141


Dr. Leonard B Weinstock has the following 2 SPECIALTIES

A gastroenterologist is a specialist in diagnosis and treatment of conditions involving the digestive/gastrointestinal (GI) tract. These doctors are experts on how food moves through the digestive system and is chemically broken down, with nutrients being absorbed and waste excreted. You might see this kind of doctor if you are experiencing any number of stomach issues, some of which might be severe diarrhea, irritable bowel syndrome, hemorrhoids, ulcers, acid reflux, Crohn's disease and more.

Specialty Expertise

Dr. Leonard B Weinstock has the following 15 expertise

  • Crohn's Disease
  • Celiac Disease
  • Gastrointestinal Endoscopy
  • Irritable Bowel Syndrome (IBS)
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Intestinal Polyps
  • Abdominal Pain
  • Hemorrhoids
  • Constipation
  • Hepatitis C
  • Colon Cancer
  • Colonic Diseases
  • Colonoscopy
  • Acid Reflux Disease (GERD)
  • Ulcerative Colitis


40 Years Experience

University Of Rochester School Of Medicine & Dentistry

Graduated in 1981

Rochester General Hospital


Dr. Leonard B Weinstock Accepts the Following Insurance

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More about Dr. Leonard B Weinstock

Dr. Weinstock is board certified in internal medicine and gastroenterology, Leonard Weinstock, MD, provides compassionate care to patients at Specialists in Gastroenterology in St. Louis, Missouri. 

Dr. Weinstock was born and raised in New York and moved to St. Louis in 1985. He received his medical training in Rochester, New York, and completed his gastroenterology fellowship at Washington University in St. Louis. 

He has a clinical teaching appointment as an Associate Professor of Clinical Medicine and Surgery at the Washington University School of Medicine. Dr. Weinstock’s lectures and research on diseases of the esophagus, stomach, small intestine, and colon have been presented at national and international conferences. He is actively researching the connection of the gut and small intestinal bacterial overgrowth (SIBO) with several medical problems, including restless legs syndrome and chronic pelvic pain syndromes. He presented several lectures in Oregon at the first SIBO symposium and in France at the international rosacea study group.

Dr. Weinstock provides individualized care to all adult patients with gastrointestinal disorders. His clinical practice emphasizes colon cancer screening, therapeutic videoendoscopy, motility disorders, management of irritable bowel syndrome, and comprehensive management of inflammatory bowel disease. His experience in treating IBS patients who have SIBO dates back to 2000. He has expertise in the use of low-dose naltrexone, which is one of the few modalities that promote the reduction of inflammation by increasing endorphins.

Dr. Weinstock is married and has twin daughters.