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Dr. Charles R. Gruner, MD

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Specializes in: Bariatric Surgery, General Surgery and Bariatric Medicine

Boston University School of Medicine

800 Austin Street East Tower, Suite 563
Evanston, IL 60202

(847) 869-0522

Dr. Charles R. Gruner, MD is a bariatric surgeon in Evanston, IL specializing in bariatric surgery, general surgery and bariatric medicine. He graduated from Boston University School of Medicine. Dr. Charles R. Gruner, MD is affiliated with Presence Resurrection Medical Center and St. Francis Hospital.

Office Locations

St. Francis Hospital

800 Austin Street East Tower, Suite 563
Evanston, IL 60202

(847) 869-0522

(847) 869-0652

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Noteworthy Medicare Patient Procedures Performed by Dr. Charles R. Gruner, MD in 2024

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Charles R. Gruner, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2012 were hospital care, inpatient care, ultrasound (sonogram) and catheterization.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

catheterization	29
diagnostic procedures	11
doctor visit	145
gastrointestinal procedures	11
hospital care	549
inpatient care	549
minimally invasive procedures	11
neck imaging	24
removal of lesion (e.g. growth)	11
ultrasound (sonogram)	41
vascular procedures	17

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2013 were hospital care, inpatient care, ultrasound (sonogram) and neck imaging.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

catheterization	15
diagnostic procedures	11
doctor visit	175
gastrointestinal procedures	11
hospital care	460
inpatient care	460
minimally invasive procedures	11
neck imaging	23
removal of lesion (e.g. growth)	11
ultrasound (sonogram)	23

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	142
Female	152

**Ethnicity**
Non-Hispanic White	183
Black	50
Hispanic	27
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	95
85 and over	50
Less than 65	45

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2013

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	61
Depression	34
Chronic Kidney Disease	46
Asthma	13
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	45
Chronic Obstructive Pulmonary Disease	28
Diabetes	52
Dementia	25
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2014 were hospital care, inpatient care, catheterization and ultrasound (sonogram).

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

catheterization	26
doctor visit	152
emergency care	11
hospital care	520
inpatient care	520
neck imaging	23
ultrasound (sonogram)	23

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	156
Female	136

**Ethnicity**
Non-Hispanic White	189
Black	55
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	81
85 and over	68
Less than 65	53

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2014

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	57
Depression	36
Chronic Kidney Disease	52
Asthma	14
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	48
Chronic Obstructive Pulmonary Disease	30
Diabetes	55
Dementia	30
Cancer	19

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2015 were hospital care, inpatient care, ultrasound (sonogram) and neck imaging.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

diagnostic procedures	13
doctor visit	129
gastrointestinal procedures	13
hospital care	383
inpatient care	383
minimally invasive procedures	13
neck imaging	17
removal of lesion (e.g. growth)	13
ultrasound (sonogram)	17

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	252
Female	214

**Ethnicity**
Non-Hispanic White	308
Black	92
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	104
85 and over	80
Less than 65	112

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2015

Hypertension	75
High Cholesterol	63
Stroke	14
Ischemic Heart Disease	59
Depression	37
Chronic Kidney Disease	54
Asthma	22
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	45
Chronic Obstructive Pulmonary Disease	30
Diabetes	42
Dementia	24
Cancer	18

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

doctor visit	162
hospital care	404
inpatient care	404

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	128
Female	142

**Ethnicity**
Non-Hispanic White	170
Black	50
Hispanic	24
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	70
85 and over	53
Less than 65	51

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2016

Hypertension	75
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	52
Depression	33
Chronic Kidney Disease	51
Asthma	24
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	34
Chronic Obstructive Pulmonary Disease	22
Diabetes	48
Dementia	25
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

doctor visit	167
hospital care	484
inpatient care	484

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	149
Female	141

**Ethnicity**
Non-Hispanic White	169
Black	56
Hispanic	24
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	81
85 and over	49
Less than 65	50

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2017

Hypertension	75
High Cholesterol	61
Stroke	12
Ischemic Heart Disease	56
Depression	36
Chronic Kidney Disease	53
Asthma	14
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	39
Chronic Obstructive Pulmonary Disease	26
Diabetes	46
Dementia	29
Cancer	18

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2018 were hospital care, inpatient care, removal of lesion (e.g. growth) and minimally invasive procedures.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

catheterization	29
diagnostic procedures	30
doctor visit	165
gastrointestinal procedures	30
hospital care	561
inpatient care	561
minimally invasive procedures	30
neck imaging	20
removal of lesion (e.g. growth)	30
ultrasound (sonogram)	20

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	174
Female	167

**Ethnicity**
Non-Hispanic White	213
Black	66
Hispanic	24
Asian	26
Other	12
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	84
85 and over	62
Less than 65	67

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2018

Hypertension	75
High Cholesterol	67
Stroke	11
Ischemic Heart Disease	51
Depression	35
Chronic Kidney Disease	52
Asthma	11
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	36
Chronic Obstructive Pulmonary Disease	26
Diabetes	49
Dementia	32
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2019 were hospital care, inpatient care, ultrasound (sonogram) and thoracic (chest) imaging.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

abdominal imaging	24
catheterization	13
doctor visit	206
hospital care	453
inpatient care	453
neck imaging	17
thoracic (chest) imaging	24
ultrasound (sonogram)	65

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	168
Female	152

**Ethnicity**
Non-Hispanic White	207
Black	59
Hispanic	24
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	92
85 and over	64
Less than 65	51

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	14
Ischemic Heart Disease	54
Depression	38
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	44
Chronic Obstructive Pulmonary Disease	31
Diabetes	48
Dementia	29
Cancer	22

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2020 were hospital care, inpatient care, ultrasound (sonogram) and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

abdominal imaging	11
diagnostic procedures	15
doctor visit	103
gastrointestinal procedures	15
hospital care	427
inpatient care	427
minimally invasive procedures	15
neck imaging	13
removal of lesion (e.g. growth)	15
thoracic (chest) imaging	12
ultrasound (sonogram)	36

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	136
Female	107

**Ethnicity**
Non-Hispanic White	159
Black	47
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	84
From 75 to 84	70
85 and over	43
Less than 65	46

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	11
Ischemic Heart Disease	51
Depression	34
Chronic Kidney Disease	51
Asthma	12
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	40
Chronic Obstructive Pulmonary Disease	25
Diabetes	48
Dementia	31
Cancer	19

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2021 were hospital care, inpatient care, ultrasound (sonogram) and thoracic (chest) imaging.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

abdominal imaging	12
diagnostic procedures	11
doctor visit	131
gastrointestinal procedures	11
hospital care	241
inpatient care	241
minimally invasive procedures	11
removal of lesion (e.g. growth)	11
thoracic (chest) imaging	12
ultrasound (sonogram)	24

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	132
Female	117

**Ethnicity**
Non-Hispanic White	161
Black	44
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	72
85 and over	61
Less than 65	37

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2021

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	54
Depression	36
Chronic Kidney Disease	57
Asthma	9
Osteoperosis	11
Atrial Fibrilation	22
Heart Failure	45
Chronic Obstructive Pulmonary Disease	24
Diabetes	50
Dementia	29
Cancer	18

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

doctor visit	124
hospital care	309
inpatient care	309

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	148
Female	119

**Ethnicity**
Non-Hispanic White	176
Black	44
Hispanic	0
Asian	20
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	80
85 and over	46
Less than 65	42

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	23
Ischemic Heart Disease	39
Depression	30
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	15
Atrial Fibrilation	33
Heart Failure	34
Chronic Obstructive Pulmonary Disease	27
Diabetes	48
Dementia	27
Cancer	21

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2023 were hospital care, inpatient care, ultrasound (sonogram) and thoracic (chest) imaging.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

abdominal imaging	11
doctor visit	124
hospital care	186
inpatient care	186
thoracic (chest) imaging	11
ultrasound (sonogram)	22

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	123
Female	101

**Ethnicity**
Non-Hispanic White	147
Black	29
Hispanic	18
Asian	18
Other	12
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	70
85 and over	33
Less than 65	30

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	33
Depression	33
Chronic Kidney Disease	34
Asthma	13
Osteoperosis	16
Atrial Fibrilation	29
Heart Failure	29
Chronic Obstructive Pulmonary Disease	28
Diabetes	44
Dementia	21
Cancer	22

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

doctor visit	114
hospital care	142
inpatient care	142

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	88
Female	67

**Ethnicity**
Non-Hispanic White	98
Black	28
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	61
From 75 to 84	47
85 and over	29
Less than 65	18

Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	34
Depression	32
Chronic Kidney Disease	30
Asthma	14
Osteoperosis	15
Atrial Fibrilation	26
Heart Failure	28
Chronic Obstructive Pulmonary Disease	19
Diabetes	44
Dementia	22
Cancer	27

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Charles R. Gruner, MD for Medicare patients.

The highest averages for the top procedures that Dr. Charles R. Gruner, MD treated as a bariatric surgeon in Evanston, IL were inpatient care, hospital care, ultrasound (sonogram) and catheterization.

abdominal imaging	14
catheterization	22
diagnostic procedures	15
doctor visit	145
emergency care	11
gastrointestinal procedures	15
hospital care	393
inpatient care	393
minimally invasive procedures	15
neck imaging	19
removal of lesion (e.g. growth)	15
thoracic (chest) imaging	14
ultrasound (sonogram)	30
vascular procedures	17

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Charles R. Gruner, MD.

**Gender**
Male	138
Female	124

**Ethnicity**
Black / African American	47
Asian / Pacific Islander	8
Non-Hispanic White	167
Hispanic	19
Native American / Alaskan Native	0
Other	1

**Age**
75 to 84	72
85 and over	49
Less than 65	46
65 to 74	94

Average of Total of Conditions of Medicare patients treated by Dr. Charles R. Gruner, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Charles R. Gruner, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	69
High Cholesterol	61
Stroke	12
Ischemic Heart Disease	46
Depression	31
Chronic Kidney Disease	43
Asthma	12
Osteoporosis	10
Heart Failure	35
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Atrial Fibrillation	19
Cancer	17
Dementia	24

Education & Training

Dr. Charles R. Gruner, MD graduated from Boston University School of Medicine. He completed residency at Loyola University Affiliated Hospitals. He has a state license in Illinois.

Medical School: Boston University School of Medicine

Residency: Loyola University Affiliated Hospitals

Licensed In: Illinois

Affiliations & Hospitals

Dr. Charles R. Gruner, MD is associated with these hospitals and organizations:

Presence Resurrection Medical Center

St. Francis Hospital

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General Payments

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

**Payments by Company**
Davol Inc.	$1,083 DAV-XenMatrix AB $491	DAV-VENTRALIGHT $446	DAV-CapSureTM $131	SURGICAL $15
Medtronic, Inc.	$398 Palindrome $325	Signia $45	LigaSure $28
W. L. Gore & Associates, Inc.	$202 SYNECOR Biomaterial $117	Vascular Graft $45	BIO-A Tissue Reinforcement $41
Kerecis Limited	$149 Kerecis Omega3 Wound $149
Endologix, Inc.	$136 AFX $136
Other	$1,722 Santyl $103	SUPREP BOWEL PREP $83	ELIQUIS $74	Praxbind $71	Kcentra $68	Other $1,323