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Dr. Christopher L. Klassen, MD, PHD

Accepting New Patients

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Specializes in: Diagnostic Radiology

University of Minnesota Medical School (2000)

645 E Missouri Avenue Suite 300
Phoenix, AZ 85012

(480) 417-4584

Dr. Christopher L. Klassen, MD, PHD is a diagnostic radiologist in Jacksonville, FL specializing in diagnostic radiology. He graduated from University of Minnesota Medical School in 2000 and has 26 years of experience. Dr. Christopher L. Klassen, MD, PHD is affiliated with Mercy Medical Center Merced, Medical College of Wisconsin, Froedtert Hospital, Dignity Health, Froedtert & the Medical College of Wisconsin Regional Health Network, Froedtert West Bend Hospital - West Bend, Froedtert Hospital - Milwaukee, Froedtert Menomonee Falls Hospital - Menomonee Falls, Froedtert West Bend Hospital and Froedtert Menomonee Falls Hospital.

Office Locations

8060 Philips Highway Suite 201
Jacksonville, FL 32256

open_in_new

W180 N8085 TOWN HALL ROAD
MENOMONEE FALLS, WI 53051

(262) 251-1000

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3200 Pleasant Valley Road
West Bend, WI 53095

(262) 836-5533

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8750 William Coffey Drive
Milwaukee, WI 53226

(414) 805-3700

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76011 WILLIAM BURGESS BOULEVARD
YULEE, FL 32097

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655 West 8th Street 2nd Floor
Jacksonville, FL 32209

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Dignity Health

645 E Missouri Avenue Suite 300
Phoenix, AZ 85012

(480) 417-4584

1-866-297-7087

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Christopher L. Klassen, MD, PHD in 2023

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

Top 5%

By Volume:

chest CT scan

CT scan

In 2023, Dr. Christopher L. Klassen, MD, PHD performed more chest CT scan, and CT scan procedures for Medicare patients than 95% of providers in related specialties within Florida.

Top 25%

By Volume:

abdominal imaging

head/brain CT scan

lower extremity venous duplex

By Affordability:

carotid duplex ultrasound

carotid ultrasound

MRI

In 2012, among providers in related specialties within Florida, Dr. Christopher L. Klassen, MD, PHD performed more abdominal imaging, head/brain CT scan, lower extremity venous duplex, pelvic CT scan, spine CT scan, ultrasound (sonogram), vascular procedures, and vascular ultrasound procedures for Medicare patients than 75% of them and he also had a list price for carotid duplex ultrasound, carotid ultrasound, and MRI (magnetic resonance 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. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2012 were thoracic (chest) imaging, X-rays, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	356
CT scan	408
neck imaging	17
pelvic imaging	189
thoracic (chest) imaging	3816
ultrasound (sonogram)	458
vascular procedures	231
women's imaging	13
X-rays	3570

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2013 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	467
CT scan	512
neck imaging	15
pelvic imaging	237
thoracic (chest) imaging	4558
ultrasound (sonogram)	451
vascular procedures	237
X-rays	4281

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1327
Female	1410

**Ethnicity**
Non-Hispanic White	1287
Black	1337
Hispanic	59
Asian	27
Other	0
Native American	0

**Age**
From 65 to 74	971
From 75 to 84	564
85 and over	227
Less than 65	975

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2013

Hypertension	75
High Cholesterol	62
Stroke	12
Ischemic Heart Disease	59
Depression	34
Chronic Kidney Disease	50
Asthma	17
Osteoperosis	6
Atrial Fibrilation	16
Heart Failure	38
Chronic Obstructive Pulmonary Disease	35
Diabetes	49
Dementia	20
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2014 were thoracic (chest) imaging, X-rays, abdominal imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	578
CT scan	518
gastrointestinal procedures	27
MRI (magnetic resonance imaging)	11
neck imaging	23
pelvic imaging	302
spinal procedures	14
thoracic (chest) imaging	3503
ultrasound (sonogram)	555
vascular procedures	289
women's imaging	13
X-rays	3399

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1178
Female	1272

**Ethnicity**
Non-Hispanic White	1174
Black	1156
Hispanic	70
Asian	33
Other	0
Native American	0

**Age**
From 65 to 74	911
From 75 to 84	464
85 and over	213
Less than 65	862

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2014

Hypertension	75
High Cholesterol	61
Stroke	13
Ischemic Heart Disease	59
Depression	36
Chronic Kidney Disease	51
Asthma	19
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	37
Chronic Obstructive Pulmonary Disease	35
Diabetes	47
Dementia	19
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2015 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	331
CT scan	378
gastrointestinal procedures	13
neck imaging	13
pelvic imaging	122
spinal procedures	11
thoracic (chest) imaging	3648
ultrasound (sonogram)	260
vascular procedures	125
X-rays	3537

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	2528
Female	2676

**Ethnicity**
Non-Hispanic White	2620
Black	2342
Hispanic	128
Asian	60
Other	0
Native American	0

**Age**
From 65 to 74	1782
From 75 to 84	1114
85 and over	486
Less than 65	1822

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2015

Hypertension	75
High Cholesterol	65
Stroke	14
Ischemic Heart Disease	57
Depression	38
Chronic Kidney Disease	52
Asthma	29
Osteoperosis	8
Atrial Fibrilation	17
Heart Failure	39
Chronic Obstructive Pulmonary Disease	36
Diabetes	51
Dementia	21
Cancer	17

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2016 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	103
brain imaging (neuroimaging)	15
cardiac procedures	13
CT scan	597
MRI (magnetic resonance imaging)	13
pelvic imaging	61
preventive care	15
thoracic (chest) imaging	5110
ultrasound (sonogram)	47
vascular procedures	22
X-rays	4617

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1440
Female	1486

**Ethnicity**
Non-Hispanic White	1627
Black	1176
Hispanic	75
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	1092
From 75 to 84	658
85 and over	244
Less than 65	932

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2016

Hypertension	75
High Cholesterol	64
Stroke	12
Ischemic Heart Disease	57
Depression	35
Chronic Kidney Disease	54
Asthma	39
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	41
Chronic Obstructive Pulmonary Disease	36
Diabetes	49
Dementia	20
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2017 were thoracic (chest) imaging, X-rays, CT scan and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	240
brain imaging (neuroimaging)	255
CT scan	776
musculoskeletal imaging	33
pelvic imaging	186
preventive care	19
spinal procedures	112
thoracic (chest) imaging	2868
ultrasound (sonogram)	103
vascular procedures	72
X-rays	2781

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1093
Female	1175

**Ethnicity**
Non-Hispanic White	1222
Black	940
Hispanic	58
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	834
From 75 to 84	522
85 and over	192
Less than 65	720

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2017

Hypertension	75
High Cholesterol	66
Stroke	13
Ischemic Heart Disease	61
Depression	36
Chronic Kidney Disease	58
Asthma	19
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	44
Chronic Obstructive Pulmonary Disease	36
Diabetes	51
Dementia	22
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2018 were CT scan, brain imaging (neuroimaging), abdominal imaging and pelvic imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	411
brain imaging (neuroimaging)	501
CT scan	1276
musculoskeletal imaging	51
pelvic imaging	406
preventive care	42
spinal procedures	262
thoracic (chest) imaging	195
ultrasound (sonogram)	206
vascular procedures	153
X-rays	233

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1061
Female	1216

**Ethnicity**
Non-Hispanic White	1270
Black	894
Hispanic	61
Asian	0
Other	27
Native American	0

**Age**
From 65 to 74	822
From 75 to 84	550
85 and over	243
Less than 65	662

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2018

Hypertension	75
High Cholesterol	69
Stroke	13
Ischemic Heart Disease	60
Depression	42
Chronic Kidney Disease	57
Asthma	15
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	43
Chronic Obstructive Pulmonary Disease	34
Diabetes	48
Dementia	25
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2019 were CT scan, brain imaging (neuroimaging), abdominal imaging and pelvic imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	620
brain imaging (neuroimaging)	684
CT scan	1591
musculoskeletal imaging	110
pelvic imaging	591
spinal procedures	284
thoracic (chest) imaging	90
ultrasound (sonogram)	266
vascular procedures	170
X-rays	286

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1379
Female	1534

**Ethnicity**
Non-Hispanic White	1753
Black	935
Hispanic	129
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	928
From 75 to 84	812
85 and over	460
Less than 65	713

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2019

Hypertension	75
High Cholesterol	71
Stroke	15
Ischemic Heart Disease	63
Depression	41
Chronic Kidney Disease	60
Asthma	14
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	47
Chronic Obstructive Pulmonary Disease	35
Diabetes	48
Dementia	30
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2020 were CT scan, brain imaging (neuroimaging), abdominal imaging and pelvic imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	555
brain imaging (neuroimaging)	689
CT scan	1643
musculoskeletal imaging	121
pelvic imaging	552
spinal procedures	276
thoracic (chest) imaging	153
ultrasound (sonogram)	196
vascular procedures	114
X-rays	255

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1395
Female	1488

**Ethnicity**
Non-Hispanic White	1633
Black	1022
Hispanic	116
Asian	0
Other	55
Native American	0

**Age**
From 65 to 74	950
From 75 to 84	758
85 and over	486
Less than 65	689

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2020

Hypertension	75
High Cholesterol	71
Stroke	15
Ischemic Heart Disease	61
Depression	44
Chronic Kidney Disease	62
Asthma	15
Osteoperosis	10
Atrial Fibrilation	21
Heart Failure	48
Chronic Obstructive Pulmonary Disease	33
Diabetes	49
Dementia	33
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2021 were CT scan, brain imaging (neuroimaging), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	623
brain imaging (neuroimaging)	689
CT scan	1778
musculoskeletal imaging	127
pelvic imaging	663
spinal procedures	294
thoracic (chest) imaging	165
ultrasound (sonogram)	148
vascular procedures	105
X-rays	253

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1268
Female	1500

**Ethnicity**
Non-Hispanic White	1541
Black	973
Hispanic	146
Asian	54
Other	0
Native American	0

**Age**
From 65 to 74	947
From 75 to 84	755
85 and over	446
Less than 65	620

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2021

Hypertension	75
High Cholesterol	73
Stroke	18
Ischemic Heart Disease	63
Depression	41
Chronic Kidney Disease	64
Asthma	13
Osteoperosis	10
Atrial Fibrilation	20
Heart Failure	45
Chronic Obstructive Pulmonary Disease	31
Diabetes	50
Dementia	32
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL during 2022 were CT scan, brain imaging (neuroimaging), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

abdominal imaging	456
brain imaging (neuroimaging)	511
CT scan	1342
musculoskeletal imaging	99
pelvic imaging	494
spinal procedures	265
thoracic (chest) imaging	111
ultrasound (sonogram)	107
vascular procedures	64
X-rays	203

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	961
Female	1156

**Ethnicity**
Non-Hispanic White	1266
Black	666
Hispanic	84
Asian	0
Other	63
Native American	0

**Age**
From 65 to 74	680
From 75 to 84	616
85 and over	355
Less than 65	466

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2022

Hypertension	75
High Cholesterol	75
Stroke	25
Ischemic Heart Disease	46
Depression	41
Chronic Kidney Disease	45
Asthma	17
Osteoperosis	15
Atrial Fibrilation	30
Heart Failure	42
Chronic Obstructive Pulmonary Disease	32
Diabetes	46
Dementia	26
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Christopher L. Klassen, MD, PHD for Medicare patients.

The highest averages for the top procedures that Dr. Christopher L. Klassen, MD, PHD treated as a diagnostic radiologist in Jacksonville, FL were thoracic (chest) imaging, X-rays, CT scan and brain imaging (neuroimaging).

abdominal imaging	430
brain imaging (neuroimaging)	477
cardiac procedures	13
CT scan	983
gastrointestinal procedures	20
MRI (magnetic resonance imaging)	12
musculoskeletal imaging	90
neck imaging	17
pelvic imaging	345
preventive care	25
spinal procedures	189
thoracic (chest) imaging	2201
ultrasound (sonogram)	254
vascular procedures	143
women's imaging	13
X-rays	2128

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD.

**Gender**
Male	1239
Female	1355

**Ethnicity**
Black / African American	1040
Asian / Pacific Islander	23
Non-Hispanic White	1399
Native American / Alaskan Native	0
Hispanic	84
Other	15

**Age**
75 to 84	619
85 and over	304
Less than 65	769
65 to 74	901

Average of Total of Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD From 2012 - 2022

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

Hypertension	68
High Cholesterol	61
Stroke	13
Ischemic Heart Disease	53
Depression	35
Chronic Kidney Disease	50
Asthma	17
Osteoporosis	8
Heart Failure	38
Chronic Obstructive Pulmonary Disease	31
Diabetes	44
Atrial Fibrillation	17
Dementia	22
Cancer	14

Education & Training

Dr. Christopher L. Klassen, MD, PHD graduated from University of Minnesota Medical School in 2000. He completed residency at University of Texas Southwestern Medical Center at Dallas and Affiliated Hospitals. He is certified by the Diagnostic Radiology and has a state license in Wisconsin.

Medical School: University of Minnesota Medical School (2000)

Residency: University of Texas Southwestern Medical Center at Dallas and Affiliated Hospitals

Board Certification: Diagnostic Radiology

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Christopher L. Klassen, MD, PHD is associated with these hospitals and organizations:

Mercy Medical Center Merced

Medical College of Wisconsin

Froedtert Hospital

Dignity Health

Froedtert & the Medical College of Wisconsin Regional Health Network

Froedtert West Bend Hospital - West Bend

Froedtert Hospital - Milwaukee

Froedtert Menomonee Falls Hospital - Menomonee Falls

Froedtert West Bend Hospital

Froedtert Menomonee Falls Hospital

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Biography

Dr. Christopher Klassen specializes in diagnostic radiology. He graduated from the University of Minnesota Medical School and then he performed his residency at a hospital affiliated with the University of Texas Southwestern Medical Center at Dallas, a hospital affiliated with the University of Minnesota, and a hospital affiliated with the University of Florida Health Science Center. Dr. Klassen is professionally affiliated with Froedtert Hospital, Mercy Medical Center Merced, and Medical College of Wisconsin. His practice in Jacksonville, FL is open to new patients as reported by Doctor.com.

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Dr. Christopher L. Klassen, MD, PHD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Christopher L. Klassen, MD, PHD in 2023

By Volume:

By Volume:

By Affordability:

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. Christopher L. Klassen, MD, PHD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Christopher L. Klassen, MD, PHD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

Biography

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