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Home > WI Providers > Diagnostic Radiologists

Dr. James Michael Walker, MD

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

University of Michigan Medical School

2901 W Kinnickinnic River Parkway Suite Ll9
Milwaukee, WI 53215

(414) 649-5138

Dr. James Michael Walker, MD is a radiologist in Milwaukee, WI specializing in interventional radiology/diagnostic radiology (ir/dr) and diagnostic radiology. He graduated from University of Michigan Medical School. Dr. James Michael Walker, MD is affiliated with ProHealth Care.

Office Locations

2901 W Kinnickinnic River Parkway Suite Ll9
Milwaukee, WI 53215

(414) 649-5138

(414) 649-5563

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725 American Avenue
Waukesha, WI 53188

(262) 928-2400

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Noteworthy Medicare Patient Procedures Performed by Dr. James Michael Walker, MD in 2024

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

Top 10%

By Affordability:

vascular imaging

vascular procedures

In 2024, Dr. James Michael Walker, MD had a list price for vascular imaging, and vascular procedures 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 Affordability:

brain imaging

duplex ultrasound

head/brain CT scan

lower extremity venous ultrasound

lower extremity venous duplex

musculoskeletal imaging

venous duplex ultrasound

venous ultrasound

X-rays

In 2012, Dr. James Michael Walker, MD had a list price for brain imaging (neuroimaging), duplex ultrasound, head/brain CT scan, lower extremity (leg) venous ultrasound, lower extremity venous duplex, musculoskeletal imaging, spine X-ray, ultrasound (sonogram), vascular studies, vascular ultrasound, venous duplex ultrasound, venous ultrasound, and X-rays that was lower than the list prices billed to Medicare by 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2012 were X-rays, thoracic (chest) imaging, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	458
angioplasty	33
aspiration	69
bone marrow tests	24
brain imaging (neuroimaging)	131
catheterization	62
CT scan	469
diagnostic procedures	40
dialysis access procedures	40
hip imaging	41
minimally invasive procedures	16
minor procedures	16
musculoskeletal imaging	68
neck imaging	22
pelvic imaging	226
pleural drainage	31
spinal procedures	82
thoracic (chest) imaging	1723
ultrasound (sonogram)	484
vascular procedures	328
X-rays	1867

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2013 were X-rays, thoracic (chest) imaging, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	553
angioplasty	36
aspiration	75
brain imaging (neuroimaging)	171
catheterization	65
CT scan	566
diagnostic procedures	22
dialysis access procedures	43
hip imaging	90
minimally invasive procedures	22
minor procedures	22
MRI (magnetic resonance imaging)	14
musculoskeletal imaging	205
neck imaging	29
pelvic imaging	280
pleural drainage	45
spinal procedures	126
thoracic (chest) imaging	1874
ultrasound (sonogram)	610
vascular procedures	428
X-rays	2259

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	1478
Female	1927

**Ethnicity**
Non-Hispanic White	2836
Black	319
Hispanic	174
Asian	34
Other	26
Native American	16

**Age**
From 65 to 74	1038
From 75 to 84	940
85 and over	670
Less than 65	757

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2013

Hypertension	75
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	52
Depression	35
Chronic Kidney Disease	47
Asthma	15
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	40
Chronic Obstructive Pulmonary Disease	31
Diabetes	41
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2014 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	405
angioplasty	51
aspiration	35
brain imaging (neuroimaging)	126
catheterization	12
CT scan	495
dialysis access procedures	54
hip imaging	59
musculoskeletal imaging	118
neck imaging	27
pelvic imaging	242
pleural drainage	21
spinal procedures	86
thoracic (chest) imaging	1639
ultrasound (sonogram)	381
vascular procedures	292
X-rays	1885

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	1330
Female	1677

**Ethnicity**
Non-Hispanic White	2538
Black	280
Hispanic	117
Asian	0
Other	32
Native American	0

**Age**
From 65 to 74	958
From 75 to 84	904
85 and over	599
Less than 65	546

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	47
Depression	32
Chronic Kidney Disease	42
Asthma	15
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	36
Chronic Obstructive Pulmonary Disease	29
Diabetes	40
Dementia	17
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2015 were X-rays, thoracic (chest) imaging, CT scan and ultrasound (sonogram).

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	477
angioplasty	19
aspiration	49
brain imaging (neuroimaging)	132
catheterization	48
CT scan	607
diagnostic procedures	15
dialysis access procedures	28
hip imaging	75
image guided procedures	15
minimally invasive procedures	15
minor procedures	15
musculoskeletal imaging	153
neck imaging	24
pelvic imaging	317
pleural drainage	19
spinal procedures	104
thoracic (chest) imaging	2247
ultrasound (sonogram)	511
vascular procedures	355
X-rays	2485

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	3054
Female	4112

**Ethnicity**
Non-Hispanic White	5780
Black	874
Hispanic	332
Asian	78
Other	72
Native American	30

**Age**
From 65 to 74	2324
From 75 to 84	2022
85 and over	1404
Less than 65	1416

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2015

Hypertension	75
High Cholesterol	62
Stroke	10
Ischemic Heart Disease	45
Depression	32
Chronic Kidney Disease	44
Asthma	23
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	29
Diabetes	37
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2016 were X-rays, thoracic (chest) imaging, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	308
angioplasty	28
aspiration	19
brain imaging (neuroimaging)	91
catheterization	51
CT scan	332
diagnostic procedures	31
dialysis access procedures	35
image guided procedures	19
minimally invasive procedures	31
minor procedures	31
musculoskeletal imaging	50
neck imaging	15
pelvic imaging	164
spinal procedures	53
thoracic (chest) imaging	1613
ultrasound (sonogram)	378
vascular procedures	267
X-rays	1708

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	1107
Female	1496

**Ethnicity**
Non-Hispanic White	1998
Black	391
Hispanic	136
Asian	0
Other	44
Native American	0

**Age**
From 65 to 74	806
From 75 to 84	690
85 and over	539
Less than 65	568

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2016

Hypertension	75
High Cholesterol	66
Stroke	10
Ischemic Heart Disease	43
Depression	31
Chronic Kidney Disease	48
Asthma	33
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	28
Diabetes	37
Dementia	21
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2017 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	296
aspiration	34
bone marrow tests	32
brain imaging (neuroimaging)	79
catheterization	18
CT scan	349
diagnostic procedures	65
image guided procedures	19
minimally invasive procedures	33
minor procedures	33
musculoskeletal imaging	48
pelvic imaging	197
spinal procedures	30
thoracic (chest) imaging	1328
ultrasound (sonogram)	254
vascular procedures	200
X-rays	1361

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	992
Female	1347

**Ethnicity**
Non-Hispanic White	1758
Black	389
Hispanic	118
Asian	0
Other	34
Native American	0

**Age**
From 65 to 74	706
From 75 to 84	651
85 and over	482
Less than 65	500

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2017

Hypertension	75
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	42
Depression	33
Chronic Kidney Disease	51
Asthma	16
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	35
Chronic Obstructive Pulmonary Disease	29
Diabetes	37
Dementia	22
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2018 were CT scan, abdominal imaging, ultrasound (sonogram) and pelvic imaging.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	301
aspiration	27
brain imaging (neuroimaging)	98
catheterization	19
CT scan	384
diagnostic procedures	11
image guided procedures	11
minimally invasive procedures	11
minor procedures	11
musculoskeletal imaging	60
neck imaging	12
pelvic imaging	211
pleural drainage	16
spinal procedures	29
thoracic (chest) imaging	61
ultrasound (sonogram)	295
vascular procedures	193
X-rays	96

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	1095
Female	1377

**Ethnicity**
Non-Hispanic White	1867
Black	395
Hispanic	136
Asian	0
Other	41
Native American	0

**Age**
From 65 to 74	792
From 75 to 84	648
85 and over	537
Less than 65	495

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2018

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	44
Depression	34
Chronic Kidney Disease	52
Asthma	15
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	35
Chronic Obstructive Pulmonary Disease	29
Diabetes	38
Dementia	23
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2019 were CT scan, abdominal imaging, pelvic imaging and brain imaging (neuroimaging).

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	270
aspiration	44
blood draw	16
brain imaging (neuroimaging)	140
catheterization	11
CT scan	539
musculoskeletal imaging	35
pelvic imaging	242
pleural drainage	24
preventive care	12
spinal procedures	60
thoracic (chest) imaging	126
ultrasound (sonogram)	121
vascular procedures	90
X-rays	96

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	809
Female	972

**Ethnicity**
Non-Hispanic White	1660
Black	14
Hispanic	33
Asian	0
Other	61
Native American	0

**Age**
From 65 to 74	654
From 75 to 84	588
85 and over	339
Less than 65	200

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2019

Hypertension	75
High Cholesterol	71
Stroke	6
Ischemic Heart Disease	52
Depression	33
Chronic Kidney Disease	53
Asthma	12
Osteoperosis	13
Atrial Fibrilation	24
Heart Failure	35
Chronic Obstructive Pulmonary Disease	25
Diabetes	33
Dementia	19
Cancer	20

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2020 were CT scan, abdominal imaging, pelvic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	188
aspiration	38
brain imaging (neuroimaging)	92
CT scan	346
musculoskeletal imaging	16
pelvic imaging	167
pleural drainage	18
spinal procedures	26
thoracic (chest) imaging	74
ultrasound (sonogram)	107
vascular procedures	73
X-rays	43

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	589
Female	764

**Ethnicity**
Non-Hispanic White	1269
Black	0
Hispanic	26
Asian	0
Other	39
Native American	0

**Age**
From 65 to 74	524
From 75 to 84	424
85 and over	243
Less than 65	162

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2020

Hypertension	75
High Cholesterol	71
Stroke	6
Ischemic Heart Disease	52
Depression	33
Chronic Kidney Disease	50
Asthma	13
Osteoperosis	11
Atrial Fibrilation	24
Heart Failure	34
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	17
Cancer	17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2021 were CT scan, abdominal imaging, pelvic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	244
aspiration	15
brain imaging (neuroimaging)	109
CT scan	422
musculoskeletal imaging	38
pelvic imaging	200
pleural drainage	15
spinal procedures	32
thoracic (chest) imaging	93
ultrasound (sonogram)	131
vascular procedures	87
X-rays	63

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	666
Female	797

**Ethnicity**
Non-Hispanic White	1350
Black	0
Hispanic	33
Asian	0
Other	58
Native American	0

**Age**
From 65 to 74	606
From 75 to 84	472
85 and over	245
Less than 65	140

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2021

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	46
Depression	30
Chronic Kidney Disease	49
Asthma	12
Osteoperosis	11
Atrial Fibrilation	22
Heart Failure	32
Chronic Obstructive Pulmonary Disease	20
Diabetes	30
Dementia	16
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2022 were CT scan, abdominal imaging, pelvic imaging and brain imaging (neuroimaging).

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	203
brain imaging (neuroimaging)	169
CT scan	452
musculoskeletal imaging	42
pelvic imaging	193
spinal procedures	62
thoracic (chest) imaging	89
ultrasound (sonogram)	122
vascular procedures	89
X-rays	103

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	738
Female	909

**Ethnicity**
Non-Hispanic White	1529
Black	0
Hispanic	32
Asian	0
Other	62
Native American	0

**Age**
From 65 to 74	599
From 75 to 84	567
85 and over	299
Less than 65	182

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	41
Depression	29
Chronic Kidney Disease	40
Asthma	14
Osteoperosis	15
Atrial Fibrilation	28
Heart Failure	32
Chronic Obstructive Pulmonary Disease	22
Diabetes	30
Dementia	14
Cancer	22

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2023 were CT scan, abdominal imaging, pelvic imaging and thoracic (chest) imaging.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	149
aspiration	15
brain imaging (neuroimaging)	102
CT scan	349
musculoskeletal imaging	16
pelvic imaging	112
pleural drainage	15
spinal procedures	42
thoracic (chest) imaging	112
ultrasound (sonogram)	79
vascular procedures	42
X-rays	50

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	542
Female	626

**Ethnicity**
Non-Hispanic White	1071
Black	0
Hispanic	17
Asian	0
Other	57
Native American	0

**Age**
From 65 to 74	440
From 75 to 84	421
85 and over	220
Less than 65	87

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	40
Asthma	15
Osteoperosis	16
Atrial Fibrilation	32
Heart Failure	31
Chronic Obstructive Pulmonary Disease	24
Diabetes	33
Dementia	14
Cancer	22

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI during 2024 were CT scan, abdominal imaging, pelvic imaging and thoracic (chest) imaging.

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

abdominal imaging	153
brain imaging (neuroimaging)	87
CT scan	346
musculoskeletal imaging	28
pelvic imaging	141
spinal procedures	37
thoracic (chest) imaging	112
ultrasound (sonogram)	55
vascular procedures	29
X-rays	59

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Male	534
Female	624

**Ethnicity**
Non-Hispanic White	1078
Black	0
Hispanic	17
Asian	0
Other	52
Native American	0

**Age**
From 65 to 74	468
From 75 to 84	406
85 and over	202
Less than 65	82

Conditions of Medicare patients treated by Dr. James Michael Walker, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	38
Asthma	16
Osteoperosis	16
Atrial Fibrilation	31
Heart Failure	28
Chronic Obstructive Pulmonary Disease	21
Diabetes	31
Dementia	12
Cancer	24

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. James Michael Walker, MD for Medicare patients.

The highest averages for the top procedures that Dr. James Michael Walker, MD treated as a radiologist in Milwaukee, WI were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

abdominal imaging	308
angioplasty	33
aspiration	38
blood draw	16
bone marrow tests	28
brain imaging (neuroimaging)	117
catheterization	35
CT scan	435
diagnostic procedures	30
dialysis access procedures	40
hip imaging	66
image guided procedures	16
minimally invasive procedures	21
minor procedures	21
MRI (magnetic resonance imaging)	14
musculoskeletal imaging	67
neck imaging	21
pelvic imaging	207
pleural drainage	22
preventive care	12
spinal procedures	59
thoracic (chest) imaging	853
ultrasound (sonogram)	271
vascular procedures	190
X-rays	928

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. James Michael Walker, MD.

**Gender**
Female	1279
Male	994

**Ethnicity**
Black / African American	204
Asian / Pacific Islander	8
Non-Hispanic White	1902
Hispanic	90
Native American / Alaskan Native	3
Other	44

**Age**
85 and over	444
75 to 84	671
Less than 65	395
65 to 74	762

Average of Total of Conditions of Medicare patients treated by Dr. James Michael Walker, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	63
Stroke	8
Ischemic Heart Disease	42
Depression	29
Chronic Kidney Disease	42
Asthma	15
Osteoporosis	11
Heart Failure	31
Chronic Obstructive Pulmonary Disease	23
Diabetes	32
Atrial Fibrillation	21
Cancer	16
Dementia	16

Education & Training

Dr. James Michael Walker, MD graduated from University of Michigan Medical School. He completed residency at Northwestern University Affiliated Hospitals. He is certified by the Board Certification: Radiology interventional and diagnostic and has a state license in Wisconsin.

Medical School: University of Michigan Medical School

Residency: Northwestern University Affiliated Hospitals

Board Certification: Board Certification: Radiology interventional and diagnostic

Licensed In: Wisconsin

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General Payments

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

**Payments by Company**
GE Healthcare	$2,483 CENTRICITY $1,528	$955
MediView XR, Inc.	$1,400 $1,400
Bard Peripheral Vascular, Inc.	$184 LUTONIX $184
Medtronic USA, Inc.	$139 Solitaire $139
UROGEN PHARMA, INC.	$109 JELMYTO $109
Other	$92 Endocare Cryocare System $30	Cryo Probe $22	OPTION $15	guidewires $15	ANGIOPLASTY $10

**Types of Payments**
Consulting Fee	$2,483
Honoraria	$1,400
Food and Beverage	$524

Biography

Dr. James Walker is a specialist in interventional radiology/diagnostic radiology (IR/DR) and diagnostic radiology. He works in Milwaukee, WI and Waukesha, WI. After attending the University of Michigan Medical School, Dr. Walker completed his residency training at a hospital affiliated with Northwestern University. He is affiliated with ProHealth Care.