Active NPI 1881621910 Individual Practitioner Male Practitioner

Dr. Clay O. Demattei , MD

Surgery • Marion, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Clay Demattei, MD is a certified Surgery practicing in Marion, IL. With approximately 45 years of clinical experience since graduating from Loyola University Of Chicago, Stritch School Of Medicine in 1981, Dr. Demattei delivers high-quality medical care to the local community at 3402 OFFICE PARK DR..

Dr. Demattei accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, diagnostic exam of large bowel using a flexible endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3402 Office Park Dr.

Marion, IL 62959

Telephone 6189933221

Associated Practice Facility / Clinic

🏢 Heartland Surgery Llc Facility NPI 1336172766

Medicare Profile & Education

Medical School

Loyola University Of Chicago, Stritch School Of Medicine

Graduation Year

1981

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Marion, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

45 Yrs +15.3 yrs vs City Avg

City Avg: 29.7 Yrs

State Avg: 27.3 Yrs

Regional Practice Density

10 Specialists

Practicing in Marion, IL (1624 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

80.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Demattei (45 Years) 45 Yrs

Marion Specialty Average (29.7 Years) 29.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	83	67	$110.00	$86.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	66	66	$170.00	$107.25
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	62	62	$240.00	$161.29
45378 Diagnostic exam of large bowel using a flexible endoscope	38	38	$1000.00	$176.09
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	32	32	$1000.00	$51.37
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	22	$153.91	$122.86
43249 Balloon dilation of esophagus using an endoscope	18	18	$1500.00	$140.36
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	18	18	$1300.00	$212.54
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$125.00	$68.87
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	13	13	$850.00	$171.18
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	11	11	$1500.00	$244.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	113	90	$110.66	$86.72
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	87	87	$170.00	$108.29
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	53	53	$240.19	$161.24
45378 Diagnostic exam of large bowel using a flexible endoscope	41	41	$996.34	$177.67
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	34	34	$1000.00	$63.22
43249 Balloon dilation of esophagus using an endoscope	25	25	$1500.00	$128.40
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$850.00	$179.27
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$150.00	$123.24
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	14	14	$1500.00	$246.87
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$125.00	$69.18
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	12	12	$1300.00	$162.81
45380 Biopsy of large bowel using an endoscope	11	11	$1200.00	$178.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	104	84	$110.00	$88.04
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	90	90	$170.00	$109.44
45378 Diagnostic exam of large bowel using a flexible endoscope	49	49	$1000.00	$178.00
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	34	34	$240.00	$162.29
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	33	33	$1000.00	$60.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	19	$154.74	$123.42
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	18	18	$1500.00	$251.04
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	17	17	$1300.00	$141.03
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$850.00	$175.98
43249 Balloon dilation of esophagus using an endoscope	16	15	$1500.00	$141.48
45380 Biopsy of large bowel using an endoscope	14	14	$1200.00	$184.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	11	$80.00	$54.58
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$125.00	$70.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	176	118	$110.34	$88.36
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	132	132	$170.00	$109.69
45378 Diagnostic exam of large bowel using a flexible endoscope	49	49	$1000.00	$172.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	47	47	$1000.00	$70.98
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	19	$80.00	$54.49
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	17	17	$1300.00	$218.15
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$850.00	$180.31
43249 Balloon dilation of esophagus using an endoscope	14	14	$1500.00	$131.46
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$125.00	$71.17
46221 Removal of external hemorrhoids by rubber banding	13	12	$500.00	$184.98
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$850.00	$177.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	177	118	$110.42	$73.55
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	120	120	$170.00	$105.69
45378 Diagnostic exam of large bowel using a flexible endoscope	60	60	$1000.00	$181.61
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	49	48	$1000.00	$69.02
43249 Balloon dilation of esophagus using an endoscope	20	20	$1500.00	$133.62
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	15	$80.00	$44.21
99202 New patient office or other outpatient visit, typically 20 minutes	18	18	$125.00	$74.59
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$1500.00	$262.14
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	14	14	$850.00	$191.42
45380 Biopsy of large bowel using an endoscope	12	12	$1200.00	$158.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	257	185	$110.29	$71.95
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	194	194	$170.18	$105.28
45378 Diagnostic exam of large bowel using a flexible endoscope	67	67	$1000.00	$191.11
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	50	50	$1000.00	$83.74
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	38	38	$1500.00	$263.07
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	32	31	$275.00	$135.93
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	27	27	$850.00	$190.29
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	24	24	$1300.00	$133.11
43249 Balloon dilation of esophagus using an endoscope	21	21	$1309.52	$141.08
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	16	14	$160.00	$72.03
45380 Biopsy of large bowel using an endoscope	15	14	$1200.00	$206.92
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$125.00	$74.03
49505 Repair of groin hernia (5 years or older)	11	11	$2500.00	$534.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	260	197	$110.00	$68.29
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	227	227	$170.00	$102.03
45378 Diagnostic exam of large bowel using a flexible endoscope	140	140	$1000.00	$184.80
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	106	103	$1000.00	$84.28
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	77	72	$275.00	$131.58
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	41	28	$160.00	$69.85
43249 Balloon dilation of esophagus using an endoscope	40	37	$707.50	$122.37
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	25	25	$1500.00	$255.05
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	19	19	$1300.00	$180.59
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	15	$80.00	$40.91
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$125.00	$70.54
46221 Removal of external hemorrhoids by rubber banding	14	14	$250.00	$104.85
45380 Biopsy of large bowel using an endoscope	13	13	$1200.00	$172.85
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	13	13	$850.00	$185.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	246	170	$110.49	$68.03
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	209	209	$170.00	$101.67
45378 Diagnostic exam of large bowel using a flexible endoscope	106	106	$1000.00	$185.21
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	87	86	$1000.00	$83.90
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	71	69	$275.00	$131.35
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	66	38	$160.00	$68.97
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	34	34	$1500.00	$254.45
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	31	31	$1300.00	$145.35
43249 Balloon dilation of esophagus using an endoscope	26	26	$700.00	$136.87
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	13	13	$850.00	$184.27
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$80.00	$40.41

Medical Specialties & State Licenses

CMS Verified: 2021-01-05

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License IL 036072552

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

036072552 (IL)

Commercial Insurance / Payer ID State License Number

036072552 (IL)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

7 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 05, 2021

Surgery (License #036072552 in IL)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 3402 OFFICE PARK DR., MARION, IL 62959 (Tel: 6189933221)

📍

Updated Business Mailing Address July 08, 2007

Registered at 3402 OFFICE PARK DR., MARION, IL 62959 (Tel: 6189933221)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as CLAY DEMATTEI, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Surgery

🟢

Initial NPI Registration & Enumeration June 26, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Clay Demattei. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1881621910

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 26, 2006

Last Update: January 05, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

3402 Office Park Dr.

Marion, IL 62959

Phone: 6189933221

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.