Active NPI 1659346583 Individual Practitioner Male Practitioner

Dr. Marius J Katilius , MD

Surgery • Joliet, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Marius Katilius, MD is a certified Surgery practicing in Joliet, IL. With approximately 32 years of clinical experience since completing medical education in 1994, Dr. Katilius delivers high-quality medical care to the local community at 2 UNO CIR.

Dr. Katilius maintains professional affiliations with Dupage Medical Group Ltd, Advocate Health And Hospitals Corporation and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, subsequent hospital care with moderate levelof medical decision making, if using time, at least, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2 Uno Cir

Joliet, IL 604356653

Telephone 8157252277

Associated Practice Facility / Clinic

🏢 Surgical Consultants Of Joliet, Ltd Facility NPI 1467461277

Medicare Profile & Education

Medical School

Other

Graduation Year

1994

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Joliet, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

32 Yrs +1.2 yrs vs City Avg

City Avg: 30.8 Yrs

State Avg: 27.3 Yrs

Regional Practice Density

15 Specialists

Practicing in Joliet, IL (1624 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Katilius (32 Years) 32 Yrs

Joliet Specialty Average (30.8 Years) 30.8 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	65	51	$158.20	$91.30
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	61	44	$151.00	$78.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$235.00	$115.60
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	36	36	$296.11	$130.23
45380 Biopsy of large bowel using an endoscope	31	31	$1336.00	$143.92
99231 Follow-up hospital inpatient care per day, typically 15 minutes	29	22	$83.00	$49.66
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$359.00	$165.42
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	18	18	$976.00	$94.45
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	15	$229.00	$131.87
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	16	$446.75	$177.10
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$1507.00	$260.09
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$219.00	$84.04
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$882.00	$187.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	76	46	$151.00	$80.58
99213 Established patient office or other outpatient visit, typically 15 minutes	52	47	$157.00	$92.69
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$235.00	$117.57
99231 Follow-up hospital inpatient care per day, typically 15 minutes	38	30	$83.00	$51.11
99221 Initial hospital inpatient care per day, typically 30 minutes	35	35	$219.34	$86.03
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	34	34	$295.00	$133.39
45380 Biopsy of large bowel using an endoscope	22	22	$1336.00	$173.46
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	22	22	$976.00	$82.79
36415 Insertion of needle into vein for collection of blood sample	19	15	$20.00	$8.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	16	$229.00	$127.42
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$359.00	$173.43
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	17	17	$882.00	$191.33
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	16	16	$43.00	$24.29
U0003 Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r	16	16	$300.00	$73.50
U0005 Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, cdc or non-cdc, making use of high throughput technologies, completed within	16	16	$75.00	$24.50

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	106	65	$151.16	$72.26
99213 Established patient office or other outpatient visit, typically 15 minutes	80	68	$157.00	$95.21
99221 Initial hospital inpatient care per day, typically 30 minutes	70	69	$219.00	$103.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	54	54	$235.00	$117.55
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	38	38	$94.00	$59.77
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	37	37	$295.00	$140.48
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	34	34	$359.00	$176.91
45380 Biopsy of large bowel using an endoscope	32	32	$1336.00	$176.18
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	28	24	$219.64	$105.61
99231 Follow-up hospital inpatient care per day, typically 15 minutes	25	24	$83.00	$40.14
36415 Insertion of needle into vein for collection of blood sample	24	23	$20.00	$2.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	20	18	$229.00	$129.61
45378 Diagnostic exam of large bowel using a flexible endoscope	17	16	$1124.00	$172.28
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	16	16	$43.00	$24.43
U0003 Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r	16	16	$300.00	$73.59
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$976.00	$97.18
U0005 Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, cdc or non-cdc, making use of high throughput technologies, completed within	16	16	$75.00	$24.53
80048 Blood test, basic group of blood chemicals (calcium, total)	15	15	$44.00	$8.35
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	13	13	$1507.00	$270.34
43246 Insertion of stomach tube using a flexible endoscope	11	11	$750.00	$127.08
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$847.00	$112.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	127	76	$151.00	$74.17
99213 Established patient office or other outpatient visit, typically 15 minutes	100	76	$157.00	$96.43
99221 Initial hospital inpatient care per day, typically 30 minutes	85	85	$219.28	$106.30
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	52	43	$94.00	$59.81
45380 Biopsy of large bowel using an endoscope	48	48	$1336.00	$178.89
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	48	48	$235.00	$118.12
99231 Follow-up hospital inpatient care per day, typically 15 minutes	42	39	$83.00	$39.94
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	38	37	$976.00	$103.97
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	36	36	$295.28	$135.73
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	30	26	$218.00	$94.84
43246 Insertion of stomach tube using a flexible endoscope	20	20	$750.00	$154.90
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$359.00	$178.93
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	15	14	$229.00	$131.22
45378 Diagnostic exam of large bowel using a flexible endoscope	15	14	$1124.00	$183.66
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	15	15	$434.60	$211.43
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	14	14	$1507.00	$272.78
31600 Opening of windpipe through neck for insertion of breathing tube	13	12	$585.00	$337.42
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	13	13	$43.00	$24.26
36415 Insertion of needle into vein for collection of blood sample	12	11	$20.00	$3.00
U0003 Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r	12	12	$300.00	$75.00
93308 Ultrasound of heart, follow-up	12	12	$160.00	$26.56
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$882.00	$200.06

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	99	61	$151.34	$76.29
99213 Established patient office or other outpatient visit, typically 15 minutes	58	45	$157.00	$79.40
99221 Initial hospital inpatient care per day, typically 30 minutes	51	50	$219.00	$109.12
99231 Follow-up hospital inpatient care per day, typically 15 minutes	50	45	$83.76	$41.51
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	30	26	$222.60	$110.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	28	28	$235.00	$107.88
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	28	21	$94.00	$46.29
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	27	$295.00	$145.96
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$435.50	$216.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$359.00	$175.65
43246 Insertion of stomach tube using a flexible endoscope	17	15	$750.00	$183.09
93308 Ultrasound of heart, follow-up	16	16	$160.00	$27.20
76705 Limited ultrasound scan of abdomen	15	15	$80.00	$31.14
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$976.00	$118.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	154	90	$151.97	$77.01
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	56	55	$295.00	$145.44
99213 Established patient office or other outpatient visit, typically 15 minutes	53	43	$157.00	$78.40
99221 Initial hospital inpatient care per day, typically 30 minutes	52	50	$219.00	$108.40
99231 Follow-up hospital inpatient care per day, typically 15 minutes	48	41	$84.58	$41.86
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	32	29	$224.06	$110.25
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	31	21	$94.00	$46.79
99306 Initial nursing facility visit, typically 45 minutes per day	30	30	$357.00	$176.22
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	28	28	$235.00	$115.66
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	17	11	$146.00	$72.93
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$359.00	$174.98
45380 Biopsy of large bowel using an endoscope	13	13	$1336.00	$193.55
43246 Insertion of stomach tube using a flexible endoscope	12	12	$750.00	$169.41
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$976.00	$97.47
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	12	$229.00	$115.07
47562 Removal of gallbladder using an endoscope	11	11	$2700.00	$749.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	104	72	$150.92	$76.52
99231 Follow-up hospital inpatient care per day, typically 15 minutes	99	92	$83.42	$40.68
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	80	43	$92.84	$45.31
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	65	64	$300.08	$143.91
99221 Initial hospital inpatient care per day, typically 30 minutes	61	61	$220.41	$107.57
99213 Established patient office or other outpatient visit, typically 15 minutes	55	43	$152.42	$76.74
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	26	26	$561.12	$214.98
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$233.19	$111.21
93308 Ultrasound of heart, follow-up	21	21	$160.00	$26.88
76705 Limited ultrasound scan of abdomen	21	21	$76.57	$31.17
45378 Diagnostic exam of large bowel using a flexible endoscope	21	21	$1124.00	$206.60
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	20	19	$222.80	$106.20
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	19	19	$847.00	$104.38
43246 Insertion of stomach tube using a flexible endoscope	19	19	$762.00	$206.11
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	13	$229.00	$107.65
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$160.00	$79.28
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	15	15	$283.40	$136.70
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	14	$976.00	$106.62
99306 Initial nursing facility visit, typically 45 minutes per day	13	13	$357.00	$174.74
45380 Biopsy of large bowel using an endoscope	12	12	$1336.00	$210.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	117	67	$150.65	$71.27
99213 Established patient office or other outpatient visit, typically 15 minutes	79	52	$94.00	$76.77
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	69	67	$301.55	$144.08
99231 Follow-up hospital inpatient care per day, typically 15 minutes	64	53	$90.00	$40.19
99221 Initial hospital inpatient care per day, typically 30 minutes	40	40	$180.75	$107.61
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	40	23	$63.00	$43.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	34	31	$154.00	$112.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$280.00	$173.19
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	25	25	$579.28	$206.09
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	22	22	$275.00	$136.42
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	21	16	$160.00	$72.39
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	21	15	$228.00	$95.69
43246 Insertion of stomach tube using a flexible endoscope	21	21	$864.00	$202.80
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	19	16	$240.42	$109.51
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	18	18	$574.00	$98.69
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$188.00	$114.92
11042 Removal of skin and tissue, 20.0 sq cm or less	15	15	$160.00	$57.80

Medical Specialties & State Licenses

CMS Verified: 2025-04-07

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License IL 036102938

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

036102938 (IL)

Commercial Insurance / Payer ID Bcbs Of Illinois

9930030 (IL)

Commercial Insurance / Payer ID Health Alliance, Urbana

66708 (IL)

Commercial Insurance / Payer ID Aetna

7943189 (IL)

Hospital & Practice Group Affiliations

Advocate Health And Hospitals Corporation

214 Mchenry Rd, Buffalo Grove, IL 600896748

Phone: 8474591160

Dupage Medical Group Ltd

2 Uno Cir, Joliet, IL 604356653

Phone: 8157252277

Advocate Health And Hospitals Corporation

836 W Wellington, Chicago, IL 606575147

Phone: 7732967147

Advocate Health And Hospitals Corporation

836 W Wellington Ave, Chicago, IL 606575147

Secondary Practice Locations

836 W Wellington Ave

Chicago, IL 606575147

Phone: 7732965073

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

6 Associated Practitioners

Dr. Manuel Corrales , MD

Surgery

NPI 1063445864

Doctor of Medicine (M.D.)

Dr. Mark Danielson , MD

Surgery

NPI 1225001068

Doctor of Medicine (M.D.)

Carol Danielson , RN

Nurse Practitioner - Family

NPI 1245632959

Registered Nurse

Dr. Jonathan Wu , MD

Surgery

NPI 1659347318

Doctor of Medicine (M.D.)

Dr. Christy Hiser , MD

Surgery

NPI 1740221126

Doctor of Medicine (M.D.)

Alexandra Richards , APN

Nurse Practitioner

NPI 1770299489

Advanced Practice Nurse

Career & Practice History Timeline

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

12 Historical Events

📍

Updated Practice Location May 24, 2019

Registered at 2 UNO CIR, JOLIET, IL 604356653 (Tel: 8157252277)

✅

NPI Profile Active January 15, 2018

NPI status registered as active in NPPES database

📍

Updated Business Mailing Address January 15, 2018

Registered at 1860 PAYSHERE CIRCLE, CHICAGO, IL 606740001 (Tel: 6304699200)

📍

Updated Practice Location January 15, 2018

Registered at 300 BARNEY DR, SUITE A, JOLIET, IL 604355296 (Tel: 8157440330)

👤

Provider Name / Credentials Updated January 15, 2018

Recorded as MARIUS KATILIUS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 15, 2018

Surgery (License #036102938 in IL)

✅

NPI Profile Active August 12, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location August 12, 2008

Registered at 300 BARNEY DR, SUITE A, JOLIET, IL 604355296 (Tel: 8157440330)

📍

Updated Business Mailing Address August 12, 2008

Registered at 300 BARNEY DR, SUITE A, JOLIET, IL 604355296 (Tel: 8157440330)

👤

Provider Name / Credentials Updated August 12, 2008

Recorded as MARIUS KATILIUS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 12, 2008

Surgery (License #036102938 in IL)

🟢

Initial NPI Registration & Enumeration February 22, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1659346583

Entity Type:

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

Enumeration Date: February 22, 2006

Last Update: April 07, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1860 Payshere Circle

Chicago, IL 606740001

Phone: 6304699200

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.