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Home > IL Providers > Neurosurgeons

Dr. Mark Chwajol, MD

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Specializes in: Neurosurgery

SUNY Downstate Medical Center College of Medicine (2002)

Professional interests include: back pain, brain aneurysm, brain tumor

1801 W. Taylor Street Suite 4e
Chicago, IL 60612

(312) 355-0510

Dr. Mark Chwajol, MD is a neurosurgeon in Chicago, IL specializing in neurosurgery. He graduated from SUNY Downstate Medical Center College of Medicine in 2002 and has 24 years of experience. Dr. Mark Chwajol, MD is affiliated with University of Illinois Hospital and Health Sciences System and OSF Healthcare.

Office Locations

1500 S Fairfield Avenue
Chicago, IL 60608

open_in_new

University of Illinois Hospital and Health Sciences System

1801 W. Taylor Street Suite 4e
Chicago, IL 60612

(312) 355-0510

open_in_new

OSF Healthcare

5666 East State Street
Rockford, IL 61108

(815) 227-2586

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	88
hospital care	161
inpatient care	161

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	154
hospital care	149
inpatient care	149

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	87
Female	113

**Ethnicity**
Non-Hispanic White	153
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	52
85 and over	21
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2013

Hypertension	75
High Cholesterol	69
Stroke	32
Ischemic Heart Disease	45
Depression	44
Chronic Kidney Disease	37
Asthma	14
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	30
Chronic Obstructive Pulmonary Disease	29
Diabetes	44
Dementia	24
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	78
hospital care	94
inpatient care	94

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	77
Female	74

**Ethnicity**
Non-Hispanic White	126
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	43
85 and over	24
Less than 65	29

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2014

Hypertension	75
High Cholesterol	68
Stroke	31
Ischemic Heart Disease	56
Depression	32
Chronic Kidney Disease	39
Asthma	10
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	34
Chronic Obstructive Pulmonary Disease	23
Diabetes	46
Dementia	26
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	54
hospital care	128
inpatient care	128

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	132
Female	156

**Ethnicity**
Non-Hispanic White	242
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	96
85 and over	48
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	44
Ischemic Heart Disease	53
Depression	36
Chronic Kidney Disease	38
Asthma	21
Osteoperosis	21
Atrial Fibrilation	23
Heart Failure	34
Chronic Obstructive Pulmonary Disease	28
Diabetes	37
Dementia	27
Cancer	18

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	15
hospital care	36
inpatient care	36

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	29
Female	32

**Ethnicity**
Non-Hispanic White	50
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	20
From 75 to 84	16
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	28
Ischemic Heart Disease	51
Depression	38
Chronic Kidney Disease	59
Asthma	21
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	33
Chronic Obstructive Pulmonary Disease	21
Diabetes	62
Dementia	31
Cancer	18

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	28

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	31
Female	20

**Ethnicity**
Non-Hispanic White	0
Black	26
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	21
From 75 to 84	0
85 and over	0
Less than 65	13

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2017

Hypertension	75
High Cholesterol	43
Stroke	27
Ischemic Heart Disease	47
Depression	25
Chronic Kidney Disease	45
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	35
Chronic Obstructive Pulmonary Disease	0
Diabetes	51
Dementia	25
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	14
hospital care	12
inpatient care	12

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	31
Female	30

**Ethnicity**
Non-Hispanic White	0
Black	29
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	23
From 75 to 84	0
85 and over	0
Less than 65	20

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2018

Hypertension	75
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	49
Depression	31
Chronic Kidney Disease	49
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	31
Chronic Obstructive Pulmonary Disease	28
Diabetes	52
Dementia	25
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	33

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	31
Female	40

**Ethnicity**
Non-Hispanic White	0
Black	40
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	0
85 and over	0
Less than 65	24

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2019

Hypertension	75
High Cholesterol	55
Stroke	15
Ischemic Heart Disease	45
Depression	18
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	17
Atrial Fibrilation	0
Heart Failure	34
Chronic Obstructive Pulmonary Disease	17
Diabetes	54
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	21
Female	28

**Ethnicity**
Non-Hispanic White	0
Black	28
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	15
From 75 to 84	0
85 and over	0
Less than 65	22

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2020

Hypertension	75
High Cholesterol	51
Stroke	24
Ischemic Heart Disease	41
Depression	37
Chronic Kidney Disease	61
Asthma	22
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	33
Chronic Obstructive Pulmonary Disease	24
Diabetes	63
Dementia	24
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

doctor visit	11
hospital care	12
inpatient care	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	25
Female	26

**Ethnicity**
Non-Hispanic White	0
Black	27
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	23
From 75 to 84	0
85 and over	0
Less than 65	16

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2021

Hypertension	75
High Cholesterol	63
Stroke	29
Ischemic Heart Disease	41
Depression	53
Chronic Kidney Disease	47
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	35
Chronic Obstructive Pulmonary Disease	0
Diabetes	67
Dementia	25
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

hospital care	12
inpatient care	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	19
Female	21

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	14
From 75 to 84	14
85 and over	0
Less than 65	12

Conditions of Medicare patients treated by Dr. Mark Chwajol, MD in 2022

Hypertension	75
High Cholesterol	65
Stroke	38
Ischemic Heart Disease	0
Depression	30
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	0
Atrial Fibrilation	30
Heart Failure	30
Chronic Obstructive Pulmonary Disease	0
Diabetes	60
Dementia	28
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Chwajol, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark Chwajol, MD treated as a neurosurgeon in Chicago, IL were hospital care and inpatient care.

doctor visit	52
hospital care	75
inpatient care	75

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Chwajol, MD.

**Gender**
Male	43
Female	49

**Ethnicity**
Black / African American	15
Asian / Pacific Islander	0
Non-Hispanic White	51
Hispanic	2
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	20
85 and over	8
Less than 65	21
65 to 74	33

Average of Total of Conditions of Medicare patients treated by Dr. Mark Chwajol, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark Chwajol, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	68
High Cholesterol	56
Stroke	24
Ischemic Heart Disease	38
Depression	31
Chronic Kidney Disease	41
Asthma	8
Osteoporosis	5
Heart Failure	29
Chronic Obstructive Pulmonary Disease	15
Diabetes	48
Atrial Fibrillation	10
Cancer	6
Dementia	23

Education & Training

Dr. Mark Chwajol, MD graduated from SUNY Downstate Medical Center College of Medicine in 2002. He completed residency at Montefiore Medical Center. He is certified by the American Board of Neurological Surgery - Neurological Surgery and has a state license in Illinois.

Medical School: SUNY Downstate Medical Center College of Medicine (2002)

Residency: Montefiore Medical Center (2003)

Board Certification: American Board of Neurological Surgery - Neurological Surgery (2017)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Mark Chwajol, MD is associated with these hospitals and organizations:

University of Illinois Hospital and Health Sciences System

OSF Healthcare

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General Payments

These charts describe general payments received by Dr. Mark Chwajol, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Alphatec Spine, Inc	$1,981 Other - Miscellaneous $206	INVICTUS OPEN $129	$1,647
LDR SPINE USA, INC	$1,977 Spinal Implant $1,977
Cerapedics, Inc.	$1,526 i-FACTOR Putty $1,526
NUVASIVE, INC.	$445 Cervicothoracic $298	Thoracolumbar $60	Biologics $55	Simplify Cervical Artificial Disc $32
Cyberonics, Inc.	$121 VNS Therapy $121
Other	$533 ANDEXXA $100	Anterior Fusion $90	Spinal-Stim Osteogenesis Stimulator $72	Spine $38	ENTYVIO $36	Other $197

**Types of Payments**
Food and Beverage	$2,731
Travel and Lodging	$2,340
Honoraria	$1,500
Education	$13

Biography

Dr. Mark Chwajol's area of specialization is neurosurgery. He has indicated that his clinical interests include back pain, brain aneurysm, and neurosurgery. Dr. Chwajol attended SUNY Downstate Medical Center College of Medicine and the University of Illinois College of Medicine and then went on to complete his residency at St. Luke's-Roosevelt Hospital Center and Montefiore Medical Center. Dr. Chwajol (or staff) speaks the following foreign languages: Polish, Czech, and Russian. Dr. Chwajol is professionally affiliated with the University of Illinois Hospital and Health Sciences System and OSF Healthcare. His practice in Chicago, IL is open to new patients as reported by Doctor.com.