Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark Fedder, MD, PC

Organization Gastroenterology Physician · NPI 1184806101

Mark Fedder, MD, PC is a Gastroenterology Physician in Maryville, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

6810 State Route 162 Ste 211
Maryville, IL 62062-8501
Phone: (618) 288-0346
Fax: (618) 288-0349
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X (IL)

Record details

NPI number1184806101
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Fedder — Owner/President · (618) 288-0346
NPI enumeratedNovember 30, 2007
Last updated in NPPESNovember 30, 2007
Mailing address6810 State Route 162, Suite 211, Maryville, IL 62062-8501

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