Mark Fedder, MD, PC

Mark Fedder, MD, PC is a healthcare organization registered as Gastroenterology Physician in Maryville, IL, holding Type 2 (organization) NPI 1184806101 since 2007. The authorized official on file is Mark Fedder, Owner/President.

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NPI	1184806101
Entity type	Organization (Type 2)
Legal business name	Mark Fedder, MD, PC
Practice address	6810 STATE ROUTE 162, SUITE 211, Maryville, IL, 62062
Phone	6182880346
Fax	6182880349
Enumeration date	2007-11-30
Last updated in NPPES	2007-11-30

Authorized official

Name	Mark Fedder
Title	Owner/President
Phone	6182880346

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207RG0100X	Gastroenterology Physician	Primary	—	IL

Copy-ready billing details

Provider: Mark Fedder, MD, PC
NPI: 1184806101
Taxonomy: 207RG0100X (Gastroenterology Physician)
Address: 6810 STATE ROUTE 162, SUITE 211, Maryville, IL, 62062

Providers at this address

NPI	Name	Type	Specialty	Location
1922009943	Mark Fedder	Individual	Gastroenterology Physician	Maryville, IL
1407831704	Kyle Shepperson	Individual	Orthopaedic Surgery Physician	Maryville, IL
1548232234	Mark Edelstein, MD, PC	Organization	Obstetrics & Gynecology Physician	Maryville, IL
1760442198	Jean Swearingen	Individual	Family Medicine Physician	Maryville, IL
1568407146	Internal Medicine O F Highland	Organization	Internal Medicine Physician	Maryville, IL
1780614669	Maryville Medical Services, LLC	Organization	Certified Registered Nurse Anesthetist	Maryville, IL
1700807716	Anderson Medical Group, LLC	Organization	General Practice Physician	Maryville, IL
1215040415	James Dalla Riva	Individual	Obstetrics & Gynecology Physician	Maryville, IL

Verify this record

Cross-check NPI 1184806101 against the authoritative CMS record: view Mark Fedder, MD, PC on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-11-30. Verify at npiregistry.cms.hhs.gov.

Where is Mark Fedder, MD, PC located?

The practice location on file with NPPES is in Maryville, IL.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-11-30.