Doctor profile · Federal record
Dr. Clay Demattei, MD
Surgery Physician (CMS: General Surgery) · Marion, IL
- NPI 1881621910
- Accepts Medicare
- 45 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3402 Office Park Dr.
Marion, IL 62959
(618) 993-3221
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- January 5, 2021
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- Illinois #036072552
- Medicaid
- IL #036072552
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1881621910. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
436
Distinct HCPCS
10
Medicare allowed
$53,595
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 113 | 90 | $87 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 87 | 87 | $108 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 53 | 53 | $161 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 41 | 41 | $178 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 34 | 34 | $63 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 25 | 25 | $128 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 16 | $123 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 16 | 16 | $179 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 14 | 14 | $247 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 14 | 14 | $69 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 36. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
142
Patients
54
Total drug cost
$1,830
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 32 | 32 | $629 |
| Omeprazole | Generic | 27 | 0 | $257 |
| Sucralfate | Generic | 26 | 0 | $480 |
| Dicyclomine Hcl | Generic | 23 | 0 | $271 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 23 | 22 | $145 |
| Metoclopramide Hcl | Generic | 11 | 0 | $48 |
Hospital affiliations
Frequently asked questions
What is Dr. Clay Demattei's medical specialty?
Dr. Clay Demattei practices Surgery Physician in Marion, IL.
Where does Dr. Clay Demattei practice?
Dr. Clay Demattei practices at 3402 Office Park Dr., Marion, IL 62959. Office phone: 6189933221.
What is Dr. Clay Demattei's NPI?
Dr. Clay Demattei's National Provider Identifier (NPI) is 1881621910, issued by NPPES.
Does Dr. Clay Demattei accept Medicare assignment?
Yes. Dr. Clay Demattei accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Clay Demattei commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.