Overview
Mark Fedder is a Gastroenterologist in Maryville, Illinois. Dr. Fedder is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Swallowing Difficulty, Painful Swallowing, Gastrointestinal Bleeding, Endoscopy, and Colonoscopy.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- PPO
- EPO
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
Additional Areas of Focus
Dr. Fedder 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.
Gregory Sayuk is a Gastroenterologist in Saint Louis, Missouri. Dr. Sayuk is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Irritable Bowel Syndrome (IBS), Chronic Idiopathic Constipation (CIC), Diarrhea, Colostomy, and Colonoscopy.
Specialists In Gastroenterology In St. Louis
Leonard Weinstock is a Gastroenterologist in St. Louis, Missouri. Dr. Weinstock is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Mast Cell Activation Syndrome (MCAS), Small Bowel Bacterial Overgrowth, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy. Dr. Weinstock is currently accepting new patients.
Washington University
Phillip Tarr is a Pediatric Gastroenterologist and a Pediatrics provider in Saint Louis, Missouri. Dr. Tarr is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Diarrhea, Necrotizing Enterocolitis, Viral Gastroenteritis, Anemia, and Small Bowel Resection. Dr. Tarr is currently accepting new patients.
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
- Advanced
- ColonoscopyDr. Fedder isAdvanced. Learn about Colonoscopy.
- DiarrheaDr. Fedder isAdvanced. Learn about Diarrhea.
- Diverticular DiseaseDr. Fedder isAdvanced. Learn about Diverticular Disease.
- EndoscopyDr. Fedder isAdvanced. Learn about Endoscopy.
- GastrectomyDr. Fedder isAdvanced. Learn about Gastrectomy.
- Gastrointestinal BleedingDr. Fedder isAdvanced. Learn about Gastrointestinal Bleeding.
- Experienced
- Acute PancreatitisDr. Fedder isExperienced. Learn about Acute Pancreatitis.
- Ampullary CancerDr. Fedder isExperienced. Learn about Ampullary Cancer.
- AnemiaDr. Fedder isExperienced. Learn about Anemia.
- Angiodysplasia of the ColonDr. Fedder isExperienced. Learn about Angiodysplasia of the Colon.
- Arteriovenous MalformationDr. Fedder isExperienced. Learn about Arteriovenous Malformation.
- AscitesDr. Fedder isExperienced. Learn about Ascites.