In 2024, among providers in related specialties within Wisconsin, Dr. Brian John Parker, MD performed more joint aspiration, joint injections, and knee X-ray procedures for Medicare patients than 95% of them and he also had a list price for pelvic imaging that was lower than the list prices billed to Medicare by 95% 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.

Top 10%

By Volume:

musculoskeletal imaging

In 2024, Dr. Brian John Parker, MD performed more musculoskeletal imaging procedures for Medicare patients than 90% of providers in related specialties within Wisconsin.

Top 25%

By Volume:

pelvis X-ray

tibia and fibula X-ray

In 2012, Dr. Brian John Parker, MD performed more pelvis X-ray, and tibia and fibula (lower leg) X-ray procedures for Medicare patients than 75% of providers in related specialties within Wisconsin.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2012 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

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

aspiration	20
brain imaging (neuroimaging)	20
CT scan	37
hip imaging	539
injections	20
MRI (magnetic resonance imaging)	180
musculoskeletal imaging	1394
pelvic imaging	289
thoracic (chest) imaging	140
X-rays	1691

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2013 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

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

aspiration	34
CT scan	25
hip imaging	453
injections	34
MRI (magnetic resonance imaging)	190
musculoskeletal imaging	1290
pelvic imaging	254
thoracic (chest) imaging	197
X-rays	1611

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	856
Female	1244

**Ethnicity**
Non-Hispanic White	2027
Black	0
Hispanic	11
Asian	18
Other	0
Native American	31

**Age**
From 65 to 74	861
From 75 to 84	526
85 and over	255
Less than 65	458

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

Hypertension	69
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	33
Depression	28
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2014 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

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

aspiration	37
CT scan	26
hip imaging	429
injections	37
MRI (magnetic resonance imaging)	149
musculoskeletal imaging	1199
pelvic imaging	226
thoracic (chest) imaging	166
X-rays	1487

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	876
Female	1288

**Ethnicity**
Non-Hispanic White	2072
Black	0
Hispanic	13
Asian	0
Other	26
Native American	39

**Age**
From 65 to 74	835
From 75 to 84	587
85 and over	240
Less than 65	502

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

Hypertension	67
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	32
Depression	29
Chronic Kidney Disease	31
Asthma	8
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2015 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

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

aspiration	43
CT scan	16
hip imaging	511
injections	43
MRI (magnetic resonance imaging)	154
musculoskeletal imaging	1383
pelvic imaging	272
thoracic (chest) imaging	149
X-rays	1735

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	2016
Female	2958

**Ethnicity**
Non-Hispanic White	4758
Black	0
Hispanic	44
Asian	0
Other	64
Native American	74

**Age**
From 65 to 74	2128
From 75 to 84	1200
85 and over	500
Less than 65	1146

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

Hypertension	65
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	32
Depression	30
Chronic Kidney Disease	31
Asthma	15
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2016 were X-rays, musculoskeletal imaging, MRI (magnetic resonance imaging) and pelvic imaging.

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

aspiration	87
hip imaging	108
injections	87
MRI (magnetic resonance imaging)	198
musculoskeletal imaging	1139
pelvic imaging	127
thoracic (chest) imaging	11
X-rays	1169

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	989
Female	1597

**Ethnicity**
Non-Hispanic White	2464
Black	0
Hispanic	18
Asian	0
Other	46
Native American	40

**Age**
From 65 to 74	1095
From 75 to 84	654
85 and over	254
Less than 65	583

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

Hypertension	64
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	30
Depression	26
Chronic Kidney Disease	33
Asthma	19
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	31
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2017 were X-rays, musculoskeletal imaging, MRI (magnetic resonance imaging) and pelvic imaging.

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

aspiration	84
CT scan	14
hip imaging	127
injections	84
MRI (magnetic resonance imaging)	213
musculoskeletal imaging	1088
pelvic imaging	133
X-rays	1125

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	1018
Female	1501

**Ethnicity**
Non-Hispanic White	2399
Black	0
Hispanic	0
Asian	22
Other	47
Native American	29

**Age**
From 65 to 74	1124
From 75 to 84	598
85 and over	250
Less than 65	547

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

Hypertension	61
High Cholesterol	45
Stroke	3
Ischemic Heart Disease	30
Depression	25
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2018 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and pelvic imaging.

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

aspiration	74
CT scan	11
hip imaging	101
injections	74
MRI (magnetic resonance imaging)	187
musculoskeletal imaging	987
pelvic imaging	111
X-rays	958

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	1052
Female	1597

**Ethnicity**
Non-Hispanic White	2497
Black	0
Hispanic	24
Asian	0
Other	65
Native American	34

**Age**
From 65 to 74	1180
From 75 to 84	649
85 and over	271
Less than 65	549

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

Hypertension	60
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	29
Depression	26
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2019 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and aspiration.

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

aspiration	117
hip imaging	98
injections	117
MRI (magnetic resonance imaging)	194
musculoskeletal imaging	911
pelvic imaging	111
X-rays	884

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	1054
Female	1513

**Ethnicity**
Non-Hispanic White	2416
Black	0
Hispanic	29
Asian	0
Other	58
Native American	32

**Age**
From 65 to 74	1144
From 75 to 84	644
85 and over	233
Less than 65	546

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

Hypertension	63
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	28
Depression	27
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2020 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and hip imaging.

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

aspiration	56
CT scan	41
hip imaging	108
injections	56
MRI (magnetic resonance imaging)	220
musculoskeletal imaging	811
pelvic imaging	91
X-rays	740

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	849
Female	1276

**Ethnicity**
Non-Hispanic White	2002
Black	0
Hispanic	20
Asian	0
Other	58
Native American	24

**Age**
From 65 to 74	986
From 75 to 84	521
85 and over	204
Less than 65	414

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

Hypertension	56
High Cholesterol	48
Stroke	2
Ischemic Heart Disease	31
Depression	26
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2021 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and aspiration.

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

aspiration	87
CT scan	57
hip imaging	73
injections	87
MRI (magnetic resonance imaging)	159
musculoskeletal imaging	812
pelvic imaging	70
X-rays	699

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	847
Female	1285

**Ethnicity**
Non-Hispanic White	2037
Black	0
Hispanic	16
Asian	0
Other	44
Native American	15

**Age**
From 65 to 74	994
From 75 to 84	555
85 and over	199
Less than 65	384

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

Hypertension	62
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	29
Depression	23
Chronic Kidney Disease	36
Asthma	6
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2022 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and aspiration.

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

aspiration	126
CT scan	55
hip imaging	65
injections	126
MRI (magnetic resonance imaging)	152
musculoskeletal imaging	842
pelvic imaging	84
X-rays	746

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	842
Female	1240

**Ethnicity**
Non-Hispanic White	1961
Black	0
Hispanic	23
Asian	0
Other	53
Native American	22

**Age**
From 65 to 74	974
From 75 to 84	524
85 and over	197
Less than 65	387

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

Hypertension	71
High Cholesterol	68
Stroke	6
Ischemic Heart Disease	23
Depression	23
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	15
Atrial Fibrilation	16
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	4
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2023 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and hip imaging.

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

aspiration	70
CT scan	59
hip imaging	75
injections	70
MRI (magnetic resonance imaging)	150
musculoskeletal imaging	741
pelvic imaging	41
X-rays	586

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	710
Female	1037

**Ethnicity**
Non-Hispanic White	1650
Black	0
Hispanic	0
Asian	0
Other	50
Native American	23

**Age**
From 65 to 74	835
From 75 to 84	483
85 and over	171
Less than 65	258

Conditions of Medicare patients treated by Dr. Brian John Parker, MD in 2023

Hypertension	71
High Cholesterol	70
Stroke	6
Ischemic Heart Disease	24
Depression	21
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	18
Atrial Fibrilation	16
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	4
Cancer	14

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI during 2024 were musculoskeletal imaging, X-rays, MRI (magnetic resonance imaging) and aspiration.

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

aspiration	83
CT scan	29
hip imaging	47
injections	83
MRI (magnetic resonance imaging)	93
musculoskeletal imaging	557
pelvic imaging	46
X-rays	504

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Male	636
Female	936

**Ethnicity**
Non-Hispanic White	1475
Black	0
Hispanic	0
Asian	18
Other	51
Native American	14

**Age**
From 65 to 74	718
From 75 to 84	470
85 and over	155
Less than 65	229

Conditions of Medicare patients treated by Dr. Brian John Parker, MD in 2024

Hypertension	72
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	24
Depression	24
Chronic Kidney Disease	26
Asthma	13
Osteoperosis	19
Atrial Fibrilation	17
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

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

The highest averages for the top procedures that Dr. Brian John Parker, MD treated as a diagnostic radiologist in Marshfield, WI were X-rays, musculoskeletal imaging, hip imaging and MRI (magnetic resonance imaging).

aspiration	70
brain imaging (neuroimaging)	20
CT scan	33
hip imaging	210
injections	70
MRI (magnetic resonance imaging)	172
musculoskeletal imaging	1011
pelvic imaging	142
thoracic (chest) imaging	132
X-rays	1071

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Brian John Parker, MD.

**Gender**
Female	1344
Male	903

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	4
Non-Hispanic White	2135
Hispanic	15
Native American / Alaskan Native	29
Other	43

**Age**
85 and over	225
75 to 84	570
Less than 65	461
65 to 74	990

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

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

Hypertension	60
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	28
Asthma	9
Osteoporosis	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Atrial Fibrillation	11
Cancer	9
Dementia	6

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. Brian John Parker, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Siemens Medical Solutions USA, Inc.	$34 SY - Image and Knowledge Management $22	syngo Workflow SLR $12
Astellas Pharma US Inc	$18 AmBisome $18

**Types of Payments**
Food and Beverage	$52

Biography

Dr. Brian Parker, who practices in Marshfield, WI, is a medical specialist in diagnostic radiology. Dr. Parker obtained a license to practice in Wisconsin.

Select Year:

Dr. Brian John Parker, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Brian John Parker, MD in 2024

By Volume:

By Affordability:

By Volume:

By Volume:

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 John Parker, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

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

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

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

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

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

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

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

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

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

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

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

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

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

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

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

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

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

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian John Parker, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian John Parker, 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 John Parker, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

Diagnostic Radiologists in Nearby Locations

Other Providers in Marshfield, WI