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Home > WI Providers > Diagnostic Radiologists

Dr. John Tomashek, MD

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Specializes in: Interventional Radiology/Diagnostic Radiology (IR/DR) and Diagnostic Radiology

10945 N Port Washington Road Suite 201
Mequon, WI 53092

(262) 292-3151

Dr. John Tomashek, MD is a radiologist in Mequon, WI specializing in interventional radiology/diagnostic radiology (ir/dr) and diagnostic radiology.

Office Locations

10945 N Port Washington Road Suite 201
Mequon, WI 53092

(262) 292-3151

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Noteworthy Medicare Patient Procedures Performed by Dr. John Tomashek, MD in 2023

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

Top 10%

By Affordability:

bone density test

central DEXA

dual-energy X-ray absorptiometry

In 2023, Dr. John Tomashek, MD had a list price for bone density test, central DEXA, and dual-energy X-ray absorptiometry (DEXA) that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Wisconsin. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

injections

lower extremity venous duplex

minimally invasive procedures

vascular procedures

vascular ultrasound

By Affordability:

abdominal CT scan

ankle brachial index

carotid duplex ultrasound

retroperitoneal ultrasound

vascular physiologic studies

In 2012, among providers in related specialties within Wisconsin, Dr. John Tomashek, MD performed more injections, lower extremity venous duplex, minimally invasive procedures, vascular procedures, and vascular ultrasound procedures for Medicare patients than 75% of them and he also had a list price for abdominal CT scan, ankle brachial index (ABI), carotid duplex ultrasound, carotid ultrasound, chest CT scan, CT scan, head/brain CT scan, pelvic CT scan, retroperitoneal ultrasound, and vascular physiologic studies that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2012 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	50
ablation	21
aspiration	22
brain imaging (neuroimaging)	44
catheterization	79
CT scan	112
doctor visit	34
hip imaging	17
injections	21
minimally invasive procedures	21
musculoskeletal imaging	17
pelvic imaging	55
pleural drainage	22
thoracic (chest) imaging	385
ultrasound (sonogram)	160
vascular procedures	196
X-rays	415

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2013 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	42
aspiration	24
brain imaging (neuroimaging)	40
catheterization	91
CT scan	117
doctor visit	27
musculoskeletal imaging	12
pelvic imaging	59
pleural drainage	24
thoracic (chest) imaging	336
ultrasound (sonogram)	140
vascular procedures	162
X-rays	345

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	340
Female	456

**Ethnicity**
Non-Hispanic White	743
Black	32
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	261
From 75 to 84	250
85 and over	174
Less than 65	111

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2013

Hypertension	75
High Cholesterol	60
Stroke	8
Ischemic Heart Disease	41
Depression	26
Chronic Kidney Disease	38
Asthma	15
Osteoperosis	13
Atrial Fibrilation	19
Heart Failure	39
Chronic Obstructive Pulmonary Disease	28
Diabetes	33
Dementia	18
Cancer	18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2014 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	74
ablation	44
aspiration	32
bone marrow tests	11
brain imaging (neuroimaging)	37
catheterization	102
CT scan	132
diagnostic procedures	11
doctor visit	19
injections	44
minimally invasive procedures	44
pelvic imaging	64
pleural drainage	32
spinal procedures	12
thoracic (chest) imaging	336
ultrasound (sonogram)	185
vascular procedures	238
X-rays	341

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	377
Female	484

**Ethnicity**
Non-Hispanic White	796
Black	45
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	283
From 75 to 84	301
85 and over	168
Less than 65	109

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2014

Hypertension	74
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	46
Depression	25
Chronic Kidney Disease	38
Asthma	14
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	39
Chronic Obstructive Pulmonary Disease	26
Diabetes	34
Dementia	14
Cancer	19

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2015 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	60
aspiration	63
bone marrow tests	11
brain imaging (neuroimaging)	32
catheterization	74
CT scan	89
diagnostic procedures	11
doctor visit	12
hospital care	12
inpatient care	12
pelvic imaging	35
pleural drainage	25
thoracic (chest) imaging	215
ultrasound (sonogram)	150
vascular procedures	156
X-rays	220

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	676
Female	844

**Ethnicity**
Non-Hispanic White	1402
Black	70
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	526
From 75 to 84	464
85 and over	312
Less than 65	218

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2015

Hypertension	75
High Cholesterol	60
Stroke	10
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	47
Asthma	22
Osteoperosis	13
Atrial Fibrilation	23
Heart Failure	39
Chronic Obstructive Pulmonary Disease	30
Diabetes	38
Dementia	16
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2016 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	41
aspiration	43
brain imaging (neuroimaging)	12
catheterization	88
CT scan	56
doctor visit	16
hospital care	15
inpatient care	15
pelvic imaging	30
pleural drainage	23
thoracic (chest) imaging	225
ultrasound (sonogram)	119
vascular procedures	171
X-rays	244

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	317
Female	452

**Ethnicity**
Non-Hispanic White	689
Black	38
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	239
85 and over	150
Less than 65	100

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2016

Hypertension	75
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	46
Depression	27
Chronic Kidney Disease	48
Asthma	32
Osteoperosis	15
Atrial Fibrilation	21
Heart Failure	37
Chronic Obstructive Pulmonary Disease	28
Diabetes	36
Dementia	18
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2017 were X-rays, thoracic (chest) imaging, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	16
aspiration	58
brain imaging (neuroimaging)	25
catheterization	54
CT scan	38
doctor visit	14
hospital care	19
inpatient care	19
musculoskeletal imaging	11
pleural drainage	31
thoracic (chest) imaging	181
ultrasound (sonogram)	158
vascular procedures	168
X-rays	199

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	331
Female	394

**Ethnicity**
Non-Hispanic White	640
Black	49
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	260
From 75 to 84	234
85 and over	121
Less than 65	110

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2017

Hypertension	75
High Cholesterol	58
Stroke	8
Ischemic Heart Disease	51
Depression	33
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	38
Chronic Obstructive Pulmonary Disease	30
Diabetes	36
Dementia	19
Cancer	18

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2018 were vascular procedures, ultrasound (sonogram), X-rays and minimally invasive procedures.

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

ablation	24
aspiration	20
brain imaging (neuroimaging)	21
catheterization	24
CT scan	21
hospital care	19
injections	24
inpatient care	19
minimally invasive procedures	24
musculoskeletal imaging	13
pleural drainage	20
ultrasound (sonogram)	133
vascular procedures	168
X-rays	25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	270
Female	346

**Ethnicity**
Non-Hispanic White	526
Black	56
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	186
85 and over	109
Less than 65	95

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2018

Hypertension	75
High Cholesterol	70
Stroke	13
Ischemic Heart Disease	56
Depression	33
Chronic Kidney Disease	51
Asthma	10
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	41
Chronic Obstructive Pulmonary Disease	28
Diabetes	39
Dementia	23
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2019 were vascular procedures, ultrasound (sonogram), CT scan and abdominal imaging.

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	107
ablation	44
aspiration	17
brain imaging (neuroimaging)	40
CT scan	125
doctor visit	43
hospital care	20
injections	44
inpatient care	20
minimally invasive procedures	44
musculoskeletal imaging	40
pelvic imaging	60
thoracic (chest) imaging	25
ultrasound (sonogram)	198
vascular procedures	209
X-rays	40

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	364
Female	511

**Ethnicity**
Non-Hispanic White	718
Black	101
Hispanic	0
Asian	13
Other	24
Native American	0

**Age**
From 65 to 74	344
From 75 to 84	248
85 and over	143
Less than 65	140

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2019

Hypertension	75
High Cholesterol	66
Stroke	10
Ischemic Heart Disease	51
Depression	39
Chronic Kidney Disease	47
Asthma	11
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	33
Chronic Obstructive Pulmonary Disease	24
Diabetes	35
Dementia	19
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2020 were vascular procedures, ultrasound (sonogram), CT scan and abdominal imaging.

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	51
aspiration	33
brain imaging (neuroimaging)	20
CT scan	63
hospital care	15
inpatient care	15
musculoskeletal imaging	24
pelvic imaging	31
pleural drainage	12
thoracic (chest) imaging	12
ultrasound (sonogram)	107
vascular procedures	114
X-rays	24

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	298
Female	372

**Ethnicity**
Non-Hispanic White	521
Black	86
Hispanic	17
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	191
85 and over	134
Less than 65	103

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2020

Hypertension	75
High Cholesterol	68
Stroke	10
Ischemic Heart Disease	52
Depression	32
Chronic Kidney Disease	54
Asthma	11
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	35
Chronic Obstructive Pulmonary Disease	23
Diabetes	34
Dementia	23
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2021 were vascular procedures, ultrasound (sonogram), aspiration and catheterization.

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	12
aspiration	48
catheterization	27
doctor visit	32
hospital care	17
inpatient care	17
musculoskeletal imaging	12
pleural drainage	16
ultrasound (sonogram)	107
vascular procedures	119
X-rays	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	195
Female	276

**Ethnicity**
Non-Hispanic White	366
Black	64
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	156
85 and over	80
Less than 65	61

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2021

Hypertension	75
High Cholesterol	66
Stroke	12
Ischemic Heart Disease	60
Depression	32
Chronic Kidney Disease	53
Asthma	14
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	34
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	19
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI during 2022 were vascular procedures, ultrasound (sonogram), X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

abdominal imaging	36
ablation	37
aspiration	28
doctor visit	46
injections	37
minimally invasive procedures	37
musculoskeletal imaging	50
ultrasound (sonogram)	165
vascular procedures	191
X-rays	50

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Male	226
Female	303

**Ethnicity**
Non-Hispanic White	419
Black	59
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	185
85 and over	90
Less than 65	49

Conditions of Medicare patients treated by Dr. John Tomashek, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	41
Depression	24
Chronic Kidney Disease	33
Asthma	14
Osteoperosis	17
Atrial Fibrilation	26
Heart Failure	30
Chronic Obstructive Pulmonary Disease	24
Diabetes	33
Dementia	13
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Tomashek, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Tomashek, MD treated as a radiologist in Mequon, WI were thoracic (chest) imaging, X-rays, vascular procedures and ultrasound (sonogram).

abdominal imaging	48
ablation	34
aspiration	35
bone marrow tests	11
brain imaging (neuroimaging)	30
catheterization	67
CT scan	83
diagnostic procedures	11
doctor visit	27
hip imaging	17
hospital care	16
injections	34
inpatient care	16
minimally invasive procedures	34
musculoskeletal imaging	22
pelvic imaging	47
pleural drainage	22
spinal procedures	12
thoracic (chest) imaging	214
ultrasound (sonogram)	147
vascular procedures	172
X-rays	174

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Tomashek, MD.

**Gender**
Female	403
Male	308

**Ethnicity**
Black / African American	54
Asian / Pacific Islander	1
Non-Hispanic White	620
Hispanic	4
Native American / Alaskan Native	0
Other	9

**Age**
85 and over	134
75 to 84	223
Less than 65	99
65 to 74	254

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

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

Hypertension	68
High Cholesterol	58
Stroke	9
Ischemic Heart Disease	44
Depression	27
Chronic Kidney Disease	41
Asthma	14
Osteoporosis	12
Heart Failure	33
Chronic Obstructive Pulmonary Disease	23
Diabetes	32
Atrial Fibrillation	19
Dementia	16
Cancer	15

Education & Training

He has a state license in Wisconsin.

Licensed In: Wisconsin

Ratings & Reviews

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General Payments

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

**Payments by Company**
Boston Scientific Corporation	$196 GENERAL - VASCULAR INTERVENTION $121	Hypertension $75
Sirtex Medical Inc	$155 SIR-Spheres microspheres $155
AngioDynamics, Inc.	$136 AlphaVac $136
Medtronic Vascular, Inc.	$131 HawkOne $82	VenaSeal $35	EverCross $14
Penumbra, Inc.	$74 Penumbra Ruby Coil $74
Other	$147 BioMimics 3D Vascular Stent System $53	ClosureRFG $31	VERTECEM $28	VARITHENA $22	CONCERTOTM $14

**Types of Payments**
Food and Beverage	$839

Biography

Dr. John Tomashek's specialties are interventional radiology/diagnostic radiology (IR/DR) and diagnostic radiology. Dr. Tomashek studied medicine at the University of Wisconsin School of Medicine and Public Health.