Doctor profile · Federal record
Dr. Mark Fedder, MD
Gastroenterology Physician · Maryville, IL
- NPI 1922009943
- MIPS 74.4 / 100 · 2023
- 21 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
6810 State Route 162, Suite 211
Maryville, IL 620628501
(618) 288-0346
fax (618) 288-0349 - Additional location
-
6812 State Route 162 Ste 204
Maryville, IL 620628562
(618) 391-5070
fax (618) 288-1872
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- December 29, 2020
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Illinois #036-067702
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1922009943. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
740
Distinct HCPCS
10
Medicare allowed
$102,766
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 156 | 61 | $80 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 112 | 111 | $257 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 72 | 69 | $106 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 69 | 51 | $88 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 68 | 61 | $133 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 58 | 58 | $188 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 43 | 43 | $184 | |
43450 |
Dilation of esophagus | 39 | 39 | $63 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 32 | 32 | $165 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 30 | 30 | $189 |
In context: peer comparison
Among 1 peers in Maryville Gastroenterology Physician, average services per provider: 56. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$60
Transactions
3
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, INC. | 2 | $38.45 | |
| Abbvie INC. | 1 | $21.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,061
Patients
623
Total drug cost
$107,006
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 394 | 389 | $31,845 |
| Omeprazole | Generic | 189 | 69 | $3,982 |
| Pantoprazole Sodium | Generic | 177 | 52 | $2,505 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 48 | 48 | $1,064 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 43 | 43 | $658 |
| Famotidine | Generic | 30 | 0 | $397 |
| Esomeprazole Magnesium | Generic | 28 | 0 | $1,385 |
| Mesalamine | Generic | 27 | 0 | $28,153 |
| Metoclopramide Hcl | Generic | 23 | 0 | $57 |
| Suprep (Sodium, Potassium,Mag Sulfates) | Brand | 22 | 22 | $2,666 |
Frequently asked questions
What is Dr. Mark Fedder's medical specialty?
Dr. Mark Fedder practices Gastroenterology Physician in Maryville, IL.
Where does Dr. Mark Fedder practice?
Dr. Mark Fedder practices at 6810 State Route 162, Maryville, IL 620628501. Office phone: 6182880346.
What is Dr. Mark Fedder's NPI?
Dr. Mark Fedder's National Provider Identifier (NPI) is 1922009943, issued by NPPES.
What procedures does Dr. Mark Fedder commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.