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Home > IA Providers > Surgeons

Dr. Brian Daniel Gerrelts, MD

(2 Ratings)

Specializes in: Surgery

1753 W Ridgeway Avenue Suite 107
Waterloo, IA 50701

(319) 833-5907

Dr. Brian Daniel Gerrelts, MD is a surgeon in Waterloo, IA specializing in surgery.

Office Locations

1753 W Ridgeway Avenue Suite 107
Waterloo, IA 50701

(319) 833-5907

(319) 833-5908

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2012 were gastrointestinal procedures, hospital care, inpatient care and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	13
catheterization	16
diagnostic procedures	70
doctor visit	414
gastrointestinal procedures	144
hospital care	142
inpatient care	142
minimally invasive procedures	131
neck imaging	11
open surgery	13
preventive care	61
removal of lesion (e.g. growth)	70
ultrasound (sonogram)	11

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2013 were gastrointestinal procedures, inpatient care, hospital care and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	30
catheterization	25
diagnostic procedures	67
doctor visit	474
gastrointestinal procedures	179
hospital care	178
inpatient care	178
minimally invasive procedures	149
minor procedures	15
neck imaging	19
open surgery	30
preventive care	82
removal of lesion (e.g. growth)	67
ultrasound (sonogram)	19
wound repair (e.g. stitches)	15

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	317
Female	233

**Ethnicity**
Non-Hispanic White	508
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	253
From 75 to 84	164
85 and over	66
Less than 65	67

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2013

Hypertension	69
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	38
Depression	22
Chronic Kidney Disease	25
Asthma	5
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	18
Diabetes	36
Dementia	11
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2014 were hospital care, inpatient care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	27
catheterization	26
diagnostic procedures	46
doctor visit	368
gastrointestinal procedures	140
hospital care	158
inpatient care	158
minimally invasive procedures	113
minor procedures	20
open surgery	27
preventive care	67
removal of lesion (e.g. growth)	46
wound repair (e.g. stitches)	20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	254
Female	219

**Ethnicity**
Non-Hispanic White	448
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	161
85 and over	58
Less than 65	57

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2014

Hypertension	68
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	37
Depression	20
Chronic Kidney Disease	27
Asthma	5
Osteoperosis	7
Atrial Fibrilation	19
Heart Failure	23
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2015 were inpatient care, hospital care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	23
anastomosis	11
catheterization	12
diagnostic procedures	46
dialysis access procedures	11
doctor visit	340
gastrointestinal procedures	131
hospital care	153
inpatient care	153
minimally invasive procedures	119
minor procedures	26
neck imaging	18
open surgery	12
preventive care	62
removal of lesion (e.g. growth)	46
ultrasound (sonogram)	18
vascular procedures	11
wound repair (e.g. stitches)	26

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	432
Female	428

**Ethnicity**
Non-Hispanic White	800
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	356
From 75 to 84	288
85 and over	116
Less than 65	100

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2015

Hypertension	70
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	40
Depression	22
Chronic Kidney Disease	32
Asthma	14
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	20
Diabetes	30
Dementia	10
Cancer	18

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2016 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

diagnostic procedures	17
doctor visit	205
gastrointestinal procedures	41
hospital care	77
inpatient care	77
minimally invasive procedures	41
minor procedures	14
preventive care	24
removal of lesion (e.g. growth)	17
wound repair (e.g. stitches)	14

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	170
Female	143

**Ethnicity**
Non-Hispanic White	293
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	97
85 and over	51
Less than 65	48

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2016

Hypertension	75
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	39
Depression	21
Chronic Kidney Disease	36
Asthma	17
Osteoperosis	7
Atrial Fibrilation	20
Heart Failure	23
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	11
Cancer	19

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2017 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

catheterization	23
diagnostic procedures	16
doctor visit	212
gastrointestinal procedures	33
hospital care	100
inpatient care	100
minimally invasive procedures	33
minor procedures	26
preventive care	17
removal of lesion (e.g. growth)	16
wound repair (e.g. stitches)	26

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	195
Female	185

**Ethnicity**
Non-Hispanic White	360
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	164
From 75 to 84	121
85 and over	46
Less than 65	49

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2017

Hypertension	71
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	36
Depression	27
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2018 were gastrointestinal procedures, inpatient care, hospital care and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	36
catheterization	25
diagnostic procedures	81
doctor visit	299
gastrointestinal procedures	187
hospital care	186
inpatient care	186
minimally invasive procedures	151
minor procedures	56
neck imaging	18
open surgery	36
preventive care	70
removal of lesion (e.g. growth)	81
ultrasound (sonogram)	18
wound repair (e.g. stitches)	56

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	296
Female	285

**Ethnicity**
Non-Hispanic White	546
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	282
From 75 to 84	162
85 and over	62
Less than 65	75

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2018

Hypertension	69
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	30
Asthma	5
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	20
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2019 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

catheterization	16
diagnostic procedures	24
doctor visit	221
gastrointestinal procedures	90
hospital care	99
inpatient care	99
minimally invasive procedures	90
minor procedures	17
neck imaging	14
preventive care	55
removal of lesion (e.g. growth)	24
ultrasound (sonogram)	14
wound repair (e.g. stitches)	17

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	214
Female	199

**Ethnicity**
Non-Hispanic White	391
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	219
From 75 to 84	106
85 and over	41
Less than 65	47

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2019

Hypertension	73
High Cholesterol	65
Stroke	3
Ischemic Heart Disease	39
Depression	22
Chronic Kidney Disease	31
Asthma	6
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	20
Diabetes	27
Dementia	6
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2020 were inpatient care, hospital care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

abdominal surgery	22
catheterization	14
diagnostic procedures	36
doctor visit	205
gastrointestinal procedures	92
hospital care	106
inpatient care	106
minimally invasive procedures	81
minor procedures	21
neck imaging	12
open surgery	11
preventive care	34
removal of lesion (e.g. growth)	36
ultrasound (sonogram)	12
wound repair (e.g. stitches)	21

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	186
Female	184

**Ethnicity**
Non-Hispanic White	348
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	181
From 75 to 84	110
85 and over	44
Less than 65	35

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2020

Hypertension	70
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	36
Depression	26
Chronic Kidney Disease	38
Asthma	5
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA during 2021 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

doctor visit	209
gastrointestinal procedures	13
hospital care	69
inpatient care	69
minimally invasive procedures	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	136
Female	151

**Ethnicity**
Non-Hispanic White	273
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	139
From 75 to 84	75
85 and over	45
Less than 65	28

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2021

Hypertension	75
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	34
Depression	28
Chronic Kidney Disease	34
Asthma	5
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	28
Dementia	6
Cancer	18

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

doctor visit	147

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	79
Female	98

**Age**
From 65 to 74	83
From 75 to 84	56
85 and over	22
Less than 65	16

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	29
Depression	24
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	17
Atrial Fibrilation	18
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	6
Cancer	19

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

doctor visit	147

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	71
Female	85

**Age**
From 65 to 74	73
From 75 to 84	52
85 and over	20
Less than 65	11

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2023

Hypertension	74
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	23
Depression	28
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	15
Atrial Fibrilation	15
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	22
Dementia	10
Cancer	17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

doctor visit	163

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	61
Female	81

**Age**
From 65 to 74	67
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2024

Hypertension	73
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	27
Depression	25
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	15
Atrial Fibrilation	15
Heart Failure	15
Chronic Obstructive Pulmonary Disease	13
Diabetes	20
Dementia	0
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Brian Daniel Gerrelts, MD for Medicare patients.

The highest averages for the top procedures that Dr. Brian Daniel Gerrelts, MD treated as a surgeon in Waterloo, IA were inpatient care, hospital care, gastrointestinal procedures and minimally invasive procedures.

abdominal surgery	25
anastomosis	11
catheterization	19
diagnostic procedures	44
dialysis access procedures	11
doctor visit	261
gastrointestinal procedures	105
hospital care	126
inpatient care	126
minimally invasive procedures	92
minor procedures	24
neck imaging	15
open surgery	21
preventive care	52
removal of lesion (e.g. growth)	44
ultrasound (sonogram)	15
vascular procedures	11
wound repair (e.g. stitches)	24

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Brian Daniel Gerrelts, MD.

**Gender**
Male	185
Female	176

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	0
Non-Hispanic White	305
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	110
85 and over	43
Less than 65	41
65 to 74	163

Average of Total of Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Brian Daniel Gerrelts, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	66
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	27
Asthma	6
Osteoporosis	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	26
Atrial Fibrillation	14
Dementia	7
Cancer	15

Education & Training

He has a state license in Iowa.

Licensed In: Iowa

Ratings & Reviews

Dr. Brian Daniel Gerrelts, MD has an exceptional overall rating with an average of 4.5 out of 5 stars based on 2 ratings. We collect ratings and reviews of Dr. Brian Daniel Gerrelts, MD from all over the web to help you find the right in Waterloo, IA.

4.5

Overall Rating

(2 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$12,182 Da Vinci Surgical System $12,182
Davol Inc.	$183 SURGICAL $76	PHASIX $54	OPTIFIX $53
Covidien Sales LLC	$77 Synthetic Mesh $61	Vessel Sealing $16
Baxter Healthcare	$69 BioSurgery - FLOSEAL $54	BioSurgery - TISSEEL $15
Ethicon Inc.	$56 Mechanical $56
Other	$381 RENASYS GO v2 HOME $55	Parietex $55	JOURNAVX $55	REPROCESSED SURGICAL DEVICES $41	Endoscopy Endocutters $25	Other $149

**Types of Payments**
Education	$8,750
Travel and Lodging	$2,296
Food and Beverage	$1,903

Biography

Dr. Brian Gerrelts, who practices in Waterloo, IA, is a medical specialist in general surgery. Dr. Gerrelts has obtained a license to practice in Iowa.

Select Year:

Dr. Brian Daniel Gerrelts, MD

Office Locations

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Brian Daniel Gerrelts, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

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