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Home > WI Providers > Diagnostic Radiologists

Dr. Sergey I. Zhadanov, MD PhD

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Specializes in: Diagnostic Radiology and Neuroradiology

Novosibirsk State Medical University (1996)

1000 North Oak Avenue
Marshfield, WI 54449

(715) 389-0633

Dr. Sergey I. Zhadanov, MD PhD is a diagnostic radiologist in Marshfield, WI specializing in diagnostic radiology and neuroradiology. He graduated from Novosibirsk State Medical University in 1996 and has 29 years of experience. Dr. Sergey I. Zhadanov, MD PhD is affiliated with Marshfield Clinic Health System, MCHS HOSPITALS INC and MARSHFIELD CLINIC INC.

Office Locations

1000 North Oak Avenue
Marshfield, WI 54449

(715) 389-0633

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Marshfield Clinic Health System

2116 Craig Road
Eau Claire, WI 54701

(715) 858-4644

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Noteworthy Medicare Patient Procedures Performed by Dr. Sergey I. Zhadanov, MD PhD in 2023

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

Top 5%

By Volume:

MRI

spine imaging

In 2023, Dr. Sergey I. Zhadanov, MD PhD performed more MRI (magnetic resonance imaging), and spine imaging procedures for Medicare patients than 95% of providers in related specialties within Wisconsin.

Top 10%

By Volume:

brain imaging

In 2023, Dr. Sergey I. Zhadanov, MD PhD performed more brain imaging (neuroimaging) procedures for Medicare patients than 90% of providers in related specialties within Wisconsin.

Top 25%

By Volume:

neck CT scan

In 2013, Dr. Sergey I. Zhadanov, MD PhD performed more neck CT scan procedures for Medicare patients than 75% of providers in related specialties within Wisconsin.

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2015 were spinal procedures, brain imaging (neuroimaging), CT scan and X-rays.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	279
CT scan	243
MRI (magnetic resonance imaging)	199
neck imaging	18
spinal procedures	386
X-rays	241

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	646
Female	796

**Ethnicity**
Non-Hispanic White	1378
Black	0
Hispanic	0
Asian	0
Other	0
Native American	26

**Age**
From 65 to 74	568
From 75 to 84	370
85 and over	174
Less than 65	330

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2015

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2015 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	67
High Cholesterol	58
Stroke	11
Ischemic Heart Disease	36
Depression	32
Chronic Kidney Disease	32
Asthma	19
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	32
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2016 were spinal procedures, X-rays, brain imaging (neuroimaging) and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	822
CT scan	641
MRI (magnetic resonance imaging)	800
neck imaging	52
sinus imaging	32
spinal procedures	1401
thoracic (chest) imaging	18
vascular procedures	36
X-rays	898

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	752
Female	993

**Ethnicity**
Non-Hispanic White	1661
Black	0
Hispanic	18
Asian	0
Other	28
Native American	27

**Age**
From 65 to 74	664
From 75 to 84	469
85 and over	204
Less than 65	408

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2016

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2016 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	67
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	36
Asthma	22
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Dementia	15
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2017 were spinal procedures, X-rays, MRI (magnetic resonance imaging) and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	644
CT scan	446
MRI (magnetic resonance imaging)	721
neck imaging	31
spinal procedures	1217
vascular procedures	11
X-rays	741

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	635
Female	858

**Ethnicity**
Non-Hispanic White	1433
Black	0
Hispanic	12
Asian	0
Other	19
Native American	14

**Age**
From 65 to 74	594
From 75 to 84	407
85 and over	140
Less than 65	352

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2017

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2017 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	63
High Cholesterol	44
Stroke	9
Ischemic Heart Disease	32
Depression	30
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	20
Diabetes	28
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2018 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	722
CT scan	574
MRI (magnetic resonance imaging)	652
neck imaging	64
spinal procedures	963
vascular procedures	11
X-rays	555

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	727
Female	889

**Ethnicity**
Non-Hispanic White	1543
Black	0
Hispanic	0
Asian	0
Other	29
Native American	22

**Age**
From 65 to 74	633
From 75 to 84	440
85 and over	172
Less than 65	371

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2018

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2018 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	65
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	34
Depression	28
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2019 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	941
CT scan	749
MRI (magnetic resonance imaging)	841
neck imaging	64
spinal procedures	1227
vascular procedures	24
X-rays	673

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	833
Female	1063

**Ethnicity**
Non-Hispanic White	1784
Black	0
Hispanic	0
Asian	25
Other	42
Native American	26

**Age**
From 65 to 74	768
From 75 to 84	524
85 and over	210
Less than 65	394

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2019

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2019 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	63
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	33
Depression	30
Chronic Kidney Disease	39
Asthma	7
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2020 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	810
CT scan	628
MRI (magnetic resonance imaging)	759
neck imaging	56
spinal procedures	1022
vascular procedures	21
X-rays	512

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	698
Female	871

**Ethnicity**
Non-Hispanic White	1468
Black	0
Hispanic	13
Asian	0
Other	40
Native American	31

**Age**
From 65 to 74	645
From 75 to 84	424
85 and over	172
Less than 65	328

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2020

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2020 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	63
High Cholesterol	52
Stroke	10
Ischemic Heart Disease	35
Depression	30
Chronic Kidney Disease	39
Asthma	6
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2021 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	792
CT scan	591
MRI (magnetic resonance imaging)	770
neck imaging	36
spinal procedures	967
vascular procedures	12
X-rays	456

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	692
Female	861

**Ethnicity**
Non-Hispanic White	1461
Black	0
Hispanic	18
Asian	19
Other	36
Native American	0

**Age**
From 65 to 74	630
From 75 to 84	412
85 and over	205
Less than 65	306

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2021

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2021 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	67
High Cholesterol	59
Stroke	12
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2022 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	750
CT scan	596
MRI (magnetic resonance imaging)	607
neck imaging	41
spinal procedures	842
vascular procedures	17
X-rays	432

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	627
Female	810

**Ethnicity**
Non-Hispanic White	1354
Black	0
Hispanic	0
Asian	19
Other	36
Native American	13

**Age**
From 65 to 74	559
From 75 to 84	435
85 and over	179
Less than 65	264

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2022

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2022 were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	75
High Cholesterol	71
Stroke	16
Ischemic Heart Disease	31
Depression	30
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	18
Atrial Fibrilation	23
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	12
Cancer	18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI during 2023 were spinal procedures, MRI (magnetic resonance imaging), brain imaging (neuroimaging) and CT scan.

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

brain imaging (neuroimaging)	533
CT scan	435
MRI (magnetic resonance imaging)	577
neck imaging	45
spinal procedures	764
X-rays	351

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	534
Female	698

**Ethnicity**
Non-Hispanic White	1149
Black	0
Hispanic	16
Asian	0
Other	33
Native American	16

**Age**
From 65 to 74	508
From 75 to 84	363
85 and over	151
Less than 65	210

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2023

The most common conditions of Medicare patients that Dr. Sergey I. Zhadanov, MD PhD treated during 2023 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	75
High Cholesterol	72
Stroke	16
Ischemic Heart Disease	27
Depression	25
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	18
Atrial Fibrilation	19
Heart Failure	18
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2015 - 2023

Volume of procedures performed by Dr. Sergey I. Zhadanov, MD PhD for Medicare patients.

The highest averages for the top procedures that Dr. Sergey I. Zhadanov, MD PhD treated as a diagnostic radiologist in Marshfield, WI were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

brain imaging (neuroimaging)	699
CT scan	544
MRI (magnetic resonance imaging)	658
neck imaging	45
sinus imaging	32
spinal procedures	976
thoracic (chest) imaging	18
vascular procedures	18
X-rays	539

Average Medicare Patient Data From 2015 - 2023

Information about Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD.

**Gender**
Male	682
Female	871

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	7
Non-Hispanic White	1470
Native American / Alaskan Native	19
Hispanic	8
Other	29

**Age**
75 to 84	427
85 and over	178
Less than 65	329
65 to 74	618

Average of Total of Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD From 2015 - 2023

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

Hypertension	67
High Cholesterol	57
Stroke	11
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	35
Asthma	10
Osteoporosis	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Atrial Fibrillation	14
Cancer	14
Dementia	13

Education & Training

Dr. Sergey I. Zhadanov, MD PhD graduated from Novosibirsk State Medical University in 1996. He completed residency at The University of Toledo Affiliated Hospitals. He is certified by the Board Certification: Diagnostic Radiology and has a state license in Wisconsin.

Medical School: Novosibirsk State Medical University (1996)

Residency: The University of Toledo Affiliated Hospitals (2014)

Board Certification: Board Certification: Diagnostic Radiology (2015)

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Sergey I. Zhadanov, MD PhD is associated with these hospitals and organizations:

Marshfield Clinic Health System

MCHS HOSPITALS INC

MARSHFIELD CLINIC INC

Ratings & Reviews

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Biography

Dr. Sergey Zhadanov is a specialist in neuroradiology and diagnostic radiology. He works in Marshfield, WI and Eau Claire, WI. He graduated from Novosibirsk State Medical University. For his residency, Dr. Zhadanov trained at a hospital affiliated with The University of Toledo. He is professionally affiliated with Marshfield Clinic Health System.

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Dr. Sergey I. Zhadanov, MD PhD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Sergey I. Zhadanov, MD PhD in 2023

By Volume:

By Volume:

By Volume:

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2015 - 2023

Average Medicare Patient Data From 2015 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Sergey I. Zhadanov, MD PhD From 2015 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

Biography

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