Expertise in
37
conditions

Dr. Leonard B. Weinstock

Gastroenterology
Specialist In Gastroenterology
11525 Olde Cabin Rd, 
Saint Louis, MO 
Accepting New Patients
Offers Telehealth
Expertise in
37
conditions
Specialist In Gastroenterology
11525 Olde Cabin Rd, 
Saint Louis, MO 

Overview

Leonard Weinstock is a Gastroenterologist practicing medicine in Saint Louis, Missouri.

Dr. Weinstock is highly rated in 37 conditions, according to our data. His clinical expertise encompasses Mast Cell Activation Syndrome (MCAS), Irritable Bowel Syndrome (IBS), Small Bowel Bacterial Overgrowth, Colonoscopy, and Endoscopy.

He is actively involved in clinical research, co-authoring 41 peer reviewed articles and participating in 5 clinical trials. Dr. Weinstock is currently accepting new patients.

Specialties

Gastroenterology

Licenses

Internal Medicine in MO

Hospital Affiliations

Barnes-Jewish West County Hospital
Barnes Jewish Hospital
Northwestern Medicine Central Dupage Hospital
Missouri Baptist Medical Center

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Celtic
  • HMO
  • INSURANCE PLAN
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Cox Health
  • EPO
  • PPO
Dean Health
  • EPO
  • HMO
  • POS
  • PPO
Essence Healthcare
  • INSURANCE PLAN
  • MEDICARE MAPD
Health Alliance
  • EPO
  • HMO
  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
HealthPartners
  • POS
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Home State Health
  • EPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
MercyCare
  • EPO
  • HMO
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
MetLife
  • PPO
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
SelectHealth
  • HMO
  • POS
Sunflower Health Plan
  • HMO
  • MANAGED MEDICAID PLAN
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
University of Utah Health
  • EPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 28 Less Insurance Carriers -

Locations

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

Additional Areas of Focus

Dr. Weinstock has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

5 Clinical Trials

Evaluation of the ctDNA LUNAR Test in an Average Patient Screening Episode
Evaluation of the ctDNA LUNAR Test in an Average Patient Screening Episode
Enrollment Status: Active_not_recruiting
Publish Date: May 14, 2026
Blood Collection Sub-Study of Exact Sciences Protocol 2019-01: Clinical Validation of an Optimized Multi-Target Stool DNA (Mt-sDNA 2.0) Test, For Colorectal Cancer Screening BLUE-C
Blood Collection Sub-Study of Exact Sciences Protocol 2019-01: Clinical Validation of an Optimized Multi-Target Stool DNA (Mt-sDNA 2.0) Test, For Colorectal Cancer Screening BLUE-C
Enrollment Status: Completed
Publish Date: September 28, 2023
Intervention Type: Other
Clinical Validation of An Optimized Multi-Target Stool DNA (Mt-sDNA 2.0) Test, for Colorectal Cancer Screening BLUE-C
Clinical Validation of An Optimized Multi-Target Stool DNA (Mt-sDNA 2.0) Test, for Colorectal Cancer Screening BLUE-C
Enrollment Status: Completed
Publish Date: September 01, 2023
Intervention Type: Procedure, Diagnostic test
A Phase 1b Randomized, Double-Blind, Placebo-Controlled, Ascending Single and Multiple Dose Study to Evaluate the Safety, Tolerability and Efficacy of SER-262 in Adults With Primary Clostridium Difficile Infection (CDI) to Prevent Recurrence
A Phase 1b Randomized, Double-Blind, Placebo-Controlled, Ascending Single and Multiple Dose Study to Evaluate the Safety, Tolerability and Efficacy of SER-262 in Adults With Primary Clostridium Difficile Infection (CDI) to Prevent Recurrence
Enrollment Status: Completed
Publish Date: February 06, 2023
Intervention Type: Drug
Study Phase: Phase 1
Stool Sample Collection Protocol for Development of Screening Test for Colorectal Cancer and Other Digestive Tract Cancers
Stool Sample Collection Protocol for Development of Screening Test for Colorectal Cancer and Other Digestive Tract Cancers
Enrollment Status: Terminated
Publish Date: April 06, 2018
Intervention Type: Device
View 4 Less Clinical Trials

41 Total Publications

Progress in mast cell activation syndrome: the global consensus-2 diagnostic criteria at six years.
Progress in mast cell activation syndrome: the global consensus-2 diagnostic criteria at six years.
Journal: Diagnosis (Berlin, Germany)
Published: February 02, 2026
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Before you request

Washington University

660 S Euclid Ave, 
Saint Louis, MO 
 (9.7 miles away)
314-747-2075
Languages Spoken:
English
See accepted insurances
Accepting New Patients
Offers Telehealth

Parakkal Deepak is a Gastroenterologist practicing medicine in Saint Louis, Missouri. Dr. Deepak is highly rated in 8 conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Viral Gastroenteritis, Colitis, Ileostomy, and Endoscopy. Dr. Deepak is currently accepting new patients.

Frequently Asked Questions about Dr. Leonard B. Weinstock

How do I make an appointment with Dr. Leonard B. Weinstock?

You can book an appointment with Dr. Leonard B. Weinstock by calling their office at 314-997-0554. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Leonard B. Weinstock a top-rated expert for Mast Cell Activation Syndrome (MCAS)?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Leonard B. Weinstock is classified as an Elite expert for Mast Cell Activation Syndrome (MCAS), meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Leonard B. Weinstock specialize in?

While Dr. Leonard B. Weinstock is a Gastroenterology, they have specific expertise in Mast Cell Activation Syndrome (MCAS), Irritable Bowel Syndrome (IBS), and Small Bowel Bacterial Overgrowth. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.

Does Dr. Leonard B. Weinstock participate in research or clinical trials?

Yes. Dr. Leonard B. Weinstock has published 41 articles and abstracts on conditions like Mast Cell Activation Syndrome (MCAS). You can view a list of Dr. Leonard B. Weinstock's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Leonard B. Weinstock accept my insurance?

Dr. Leonard B. Weinstock accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 314-997-0554 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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