Dr. Mark Stephen Fedder, MD

Dr. Fedder practices at Anderson Hospital in Maryville, Illinois.

Dr. Fedder's NPI, 1922009943, was assigned on August 2, 2005. Dr. Fedder graduated from University of Illinois College of Medicine - Chicago in 1982. Dr. Fedder holds Illinois license 036-067702.

Dr. Fedder's primary practice is Anderson Hospital, at 6800 State Rte 162, Maryville, IL 62062 in Madison County. The practice phone is (618) 288-5711.

Dr. Fedder's primary practice is Anderson Hospital in Maryville, Illinois. The medical group on file is Anderson Medical Group. Dmand AI also links Dr. Fedder to 1 more physician office and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fedder practices, 2 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Fedder's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Fedder is board certified in internal medicine by the American Board of Internal Medicine. Dr. Fedder is licensed in Illinois.

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), colonoscopy, gastroenteritis, gastrointestinal bleeding, hemorrhoids, intestinal diverticulosis and intestinal or bowel obstruction among the conditions Dr. Fedder treats.

CMS data shows 107 Medicare services from Dr. Fedder across 5 procedure codes in 2024, for 111 Medicare patients. Medicare paid $17,679 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 111 Medicare patients who saw Dr. Fedder in 2024. The largest group is 65 to 74, with 71 patients. 73% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 0.64, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Fedder's median patient age at 70, with 38% women.

In 2024, Dr. Fedder wrote 626 Medicare Part D claims for 367 patients. 77% of them were for generic drugs. CMS names the drug for 521 of them, across 6 drugs with 11 or more claims each, at $25,589 in total drug cost. In 2023, CMS named 1,138 claims across 21 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Fedder for performance year 2024, reported as part of a group.

CMS Open Payments shows 191 general payments to Dr. Fedder from 24 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 92% of the total. Abbvie Inc. paid the most, $1,053.

Dr. Fedder graduated from University of Illinois College of Medicine - Chicago in 1982.

Dr. Fedder is in network with 13 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.