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Dr. William John Knox IV, MD

(William J. Knox IV, MD)

(No ratings)

Specializes in: Diagnostic Radiology and General Practice

University of South Alabama College of Medicine (2002)

1000 Ochsner Boulevard
Covington, LA 70433

(985) 875-2828

Dr. William John Knox IV, MD is a diagnostic radiologist in Covington, LA specializing in diagnostic radiology and general practice. He graduated from University of South Alabama College of Medicine in 2002 and has 24 years of experience. Dr. William John Knox IV, MD is affiliated with Slidell Memorial Hospital, Ochsner Health, Ochsner Medical Center, Ochsner Medical Center - Northshore and OCHSNER MISSISSIPPI, LLC.

Office Locations

1000 Ochsner Boulevard
Covington, LA 70433

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1203 S Tyler Street Suite 220
Covington, LA 70433

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Noteworthy Medicare Patient Procedures Performed by Dr. William John Knox IV, MD in 2023

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

Top 5%

By Affordability:

In 2023, Dr. William John Knox IV, MD had a list price for ankle MRI, hip MRI, joint MRI, knee MRI, lower extremity MRI, and MRI (magnetic resonance imaging) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Louisiana. 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 Affordability:

chest CT scan

complete abdominal ultrasound

elbow MRI

joint X-ray

knee X-ray

limited abdominal ultrasound

neck ultrasound

retroperitoneal ultrasound

shoulder MRI

soft tissue ultrasound

upper extremity MRI

wrist MRI

In 2023, Dr. William John Knox IV, MD had a list price for chest CT scan, complete abdominal ultrasound, elbow MRI, joint X-ray, knee X-ray, limited abdominal ultrasound, neck ultrasound, retroperitoneal ultrasound, shoulder MRI, soft tissue ultrasound, upper extremity MRI, and wrist MRI that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Louisiana. 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:

central DEXA

knee X-ray

musculoskeletal imaging

X-rays

By Affordability:

2-D diagnostic mammogram

carotid duplex ultrasound

dual-energy X-ray absorptiometry

mammogram

non-obstetric transvaginal ultrasound

pelvic CT scan

screening mammogram

targeted breast ultrasound

thoracic imaging

transvaginal ultrasound

women's imaging

In 2012, among providers in related specialties within Louisiana, Dr. William John Knox IV, MD performed more central DEXA, knee X-ray, musculoskeletal imaging, and X-rays procedures for Medicare patients than 75% of them and he also had a list price for 2-D diagnostic mammogram, 2-D mammogram, abdominal CT scan, bone density test, breast imaging, breast ultrasound, carotid duplex ultrasound, carotid ultrasound, central DEXA, CT scan, diagnostic imaging, diagnostic mammogram, dual-energy X-ray absorptiometry (DEXA), mammogram (breast X-ray), non-obstetric transvaginal ultrasound, pelvic CT scan, screening mammogram, targeted breast ultrasound, thoracic (chest) imaging, transvaginal ultrasound, and women's imaging 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. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2012 were X-rays, musculoskeletal imaging, ultrasound (sonogram) and women's imaging.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	151
brain imaging (neuroimaging)	42
breast procedures	266
CT scan	69
diagnostic imaging	19
hip imaging	46
MRI (magnetic resonance imaging)	65
musculoskeletal imaging	369
neck imaging	29
pelvic imaging	77
preventive care	232
spinal procedures	70
thoracic (chest) imaging	265
ultrasound (sonogram)	344
vascular procedures	220
women's imaging	283
X-rays	906

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2013 were X-rays, musculoskeletal imaging, ultrasound (sonogram) and thoracic (chest) imaging.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	267
brain imaging (neuroimaging)	61
breast procedures	267
cardiac procedures	11
CT scan	147
diagnostic imaging	39
hip imaging	92
MRI (magnetic resonance imaging)	157
musculoskeletal imaging	636
neck imaging	53
nuclear scan	11
pelvic imaging	135
preventive care	202
spinal procedures	163
stress testing	11
thoracic (chest) imaging	338
ultrasound (sonogram)	404
vascular procedures	161
women's imaging	285
X-rays	1232

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	631
Female	1202

**Ethnicity**
Non-Hispanic White	1548
Black	200
Hispanic	52
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	841
From 75 to 84	496
85 and over	180
Less than 65	316

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2013

Hypertension	72
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	39
Depression	24
Chronic Kidney Disease	25
Asthma	7
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	18
Diabetes	33
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2014 were X-rays, musculoskeletal imaging, thoracic (chest) imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	288
brain imaging (neuroimaging)	62
breast procedures	235
CT scan	201
diagnostic imaging	45
hip imaging	91
MRI (magnetic resonance imaging)	152
musculoskeletal imaging	444
neck imaging	49
pelvic imaging	137
preventive care	163
spinal procedures	174
thoracic (chest) imaging	437
ultrasound (sonogram)	383
vascular procedures	101
women's imaging	255
X-rays	1104

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	662
Female	1174

**Ethnicity**
Non-Hispanic White	1538
Black	209
Hispanic	55
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	884
From 75 to 84	450
85 and over	202
Less than 65	300

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2014

Hypertension	74
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	41
Depression	26
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2015 were X-rays, musculoskeletal imaging, thoracic (chest) imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	273
brain imaging (neuroimaging)	76
breast procedures	302
CT scan	208
diagnostic imaging	42
hip imaging	98
MRI (magnetic resonance imaging)	143
musculoskeletal imaging	462
neck imaging	55
pelvic imaging	119
preventive care	208
spinal procedures	177
thoracic (chest) imaging	408
ultrasound (sonogram)	397
vascular procedures	118
women's imaging	315
X-rays	1132

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	1234
Female	2494

**Ethnicity**
Non-Hispanic White	3080
Black	464
Hispanic	116
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	1816
From 75 to 84	856
85 and over	364
Less than 65	692

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2015

Hypertension	73
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	39
Depression	28
Chronic Kidney Disease	30
Asthma	14
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Dementia	9
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2016 were X-rays, women's imaging, ultrasound (sonogram) and breast procedures.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	248
brain imaging (neuroimaging)	59
breast procedures	371
CT scan	190
diagnostic imaging	38
hip imaging	12
MRI (magnetic resonance imaging)	118
musculoskeletal imaging	282
neck imaging	65
pelvic imaging	128
preventive care	281
spinal procedures	156
thoracic (chest) imaging	335
ultrasound (sonogram)	383
vascular procedures	128
women's imaging	389
X-rays	984

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	561
Female	1256

**Ethnicity**
Non-Hispanic White	1526
Black	208
Hispanic	52
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	883
From 75 to 84	413
85 and over	171
Less than 65	350

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2016

Hypertension	72
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	38
Depression	27
Chronic Kidney Disease	33
Asthma	20
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	9
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2017 were X-rays, women's imaging, breast procedures and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	298
brain imaging (neuroimaging)	84
breast procedures	436
CT scan	237
diagnostic imaging	37
hip imaging	23
MRI (magnetic resonance imaging)	148
musculoskeletal imaging	205
neck imaging	59
pelvic imaging	145
preventive care	363
spinal procedures	158
thoracic (chest) imaging	233
ultrasound (sonogram)	325
vascular procedures	85
women's imaging	436
X-rays	837

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	495
Female	1233

**Ethnicity**
Non-Hispanic White	1457
Black	190
Hispanic	40
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	875
From 75 to 84	414
85 and over	154
Less than 65	285

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2017

Hypertension	75
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	38
Depression	27
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2018 were X-rays, breast procedures, women's imaging and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	214
aspiration	16
brain imaging (neuroimaging)	54
breast procedures	749
CT scan	234
diagnostic imaging	98
diagnostic procedures	36
image guided procedures	36
minimally invasive procedures	36
minor procedures	36
MRI (magnetic resonance imaging)	36
musculoskeletal imaging	172
neck imaging	17
pelvic imaging	135
preventive care	501
spinal procedures	29
thoracic (chest) imaging	89
ultrasound (sonogram)	350
vascular procedures	89
women's imaging	741
X-rays	783

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	470
Female	1207

**Ethnicity**
Non-Hispanic White	1413
Black	185
Hispanic	39
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	904
From 75 to 84	389
85 and over	122
Less than 65	262

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2018

Hypertension	71
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	34
Depression	28
Chronic Kidney Disease	32
Asthma	7
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	29
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2019 were X-rays, breast procedures, women's imaging and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	248
breast procedures	624
CT scan	213
diagnostic imaging	84
diagnostic procedures	13
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
MRI (magnetic resonance imaging)	33
musculoskeletal imaging	209
neck imaging	59
pelvic imaging	112
preventive care	427
spinal procedures	54
thoracic (chest) imaging	112
ultrasound (sonogram)	404
vascular procedures	92
women's imaging	611
X-rays	723

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	460
Female	1194

**Ethnicity**
Non-Hispanic White	1430
Black	149
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	907
From 75 to 84	404
85 and over	131
Less than 65	212

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2019

Hypertension	73
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	31
Asthma	8
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	16
Diabetes	27
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2020 were X-rays, women's imaging, breast procedures and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	175
breast procedures	463
CT scan	142
diagnostic imaging	72
musculoskeletal imaging	180
neck imaging	52
pelvic imaging	84
preventive care	305
spinal procedures	12
thoracic (chest) imaging	69
ultrasound (sonogram)	294
vascular procedures	49
women's imaging	463
X-rays	570

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	330
Female	918

**Ethnicity**
Non-Hispanic White	1042
Black	131
Hispanic	43
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	692
From 75 to 84	327
85 and over	62
Less than 65	167

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2020

Hypertension	71
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	34
Depression	30
Chronic Kidney Disease	33
Asthma	9
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2021 were X-rays, breast procedures, women's imaging and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	169
breast procedures	496
CT scan	138
diagnostic imaging	52
diagnostic procedures	14
image guided procedures	14
minimally invasive procedures	14
minor procedures	14
musculoskeletal imaging	235
neck imaging	39
pelvic imaging	77
preventive care	346
spinal procedures	25
thoracic (chest) imaging	61
ultrasound (sonogram)	226
vascular procedures	11
women's imaging	482
X-rays	658

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	413
Female	966

**Ethnicity**
Non-Hispanic White	1173
Black	140
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	748
From 75 to 84	362
85 and over	104
Less than 65	165

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2021

Hypertension	71
High Cholesterol	65
Stroke	4
Ischemic Heart Disease	36
Depression	28
Chronic Kidney Disease	34
Asthma	9
Osteoperosis	12
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	14
Diabetes	31
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA during 2022 were X-rays, women's imaging, breast procedures and preventive care.

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

abdominal imaging	152
aspiration	15
breast procedures	337
CT scan	100
diagnostic imaging	36
injections	15
musculoskeletal imaging	237
neck imaging	56
pelvic imaging	53
preventive care	249
thoracic (chest) imaging	47
ultrasound (sonogram)	221
vascular procedures	28
women's imaging	337
X-rays	522

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	322
Female	889

**Ethnicity**
Non-Hispanic White	1053
Black	96
Hispanic	29
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	681
From 75 to 84	348
85 and over	63
Less than 65	119

Conditions of Medicare patients treated by Dr. William John Knox IV, MD in 2022

Hypertension	75
High Cholesterol	72
Stroke	7
Ischemic Heart Disease	29
Depression	25
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	27
Dementia	4
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William John Knox IV, MD for Medicare patients.

The highest averages for the top procedures that Dr. William John Knox IV, MD treated as a diagnostic radiologist in Covington, LA were X-rays, women's imaging, breast procedures and ultrasound (sonogram).

abdominal imaging	225
aspiration	15
brain imaging (neuroimaging)	62
breast procedures	413
cardiac procedures	11
CT scan	170
diagnostic imaging	51
diagnostic procedures	21
hip imaging	60
image guided procedures	21
injections	15
minimally invasive procedures	21
minor procedures	21
MRI (magnetic resonance imaging)	106
musculoskeletal imaging	311
neck imaging	48
nuclear scan	11
pelvic imaging	109
preventive care	297
spinal procedures	101
stress testing	11
thoracic (chest) imaging	217
ultrasound (sonogram)	339
vascular procedures	98
women's imaging	417
X-rays	859

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William John Knox IV, MD.

**Gender**
Male	507
Female	1139

**Ethnicity**
Black / African American	179
Asian / Pacific Islander	0
Non-Hispanic White	1387
Native American / Alaskan Native	0
Hispanic	44
Other	7

**Age**
75 to 84	405
85 and over	141
Less than 65	260
65 to 74	839

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

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

Hypertension	66
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	27
Asthma	9
Osteoporosis	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Atrial Fibrillation	9
Dementia	7
Cancer	12

Education & Training

Dr. William John Knox IV, MD graduated from University of South Alabama College of Medicine in 2002. He completed residency at Ochsner Clinic Foundation - GME Office. He is certified by the American Board of Radiology American Board of Radiology - Radiology Inc. - Radiology and has a state license in Louisiana.

Medical School: University of South Alabama College of Medicine (2002)

Residency: Ochsner Clinic Foundation - GME Office (2007)

Board Certification: American Board of Radiology American Board of Radiology - Radiology Inc. - Radiology

Licensed In: Louisiana

Affiliations & Hospitals

Dr. William John Knox IV, MD is associated with these hospitals and organizations:

Slidell Memorial Hospital

Ochsner Health

Ochsner Medical Center

Ochsner Medical Center - Northshore

OCHSNER MISSISSIPPI, LLC

Ratings & Reviews

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Biography

Dr. William Knox is a specialist in general practice and diagnostic radiology. Dr. Knox attended the University of South Alabama College of Medicine and then went on to complete his residency at Ochsner Medical Center. He is affiliated with Slidell Memorial Hospital and Ochsner Medical Center.