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Home > MN Providers > Radiation Oncologists

Dr. John A. Kosiak, MD, MN

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Specializes in: Radiation Oncology

University of Minnesota Medical School

11850 Blackfoot Street Northwest Suite 150
Coon Rapids, MN 55433

(763) 433-0221

Dr. John A. Kosiak, MD, MN is a radiation oncologist in Coon Rapids, MN specializing in radiation oncology. He graduated from University of Minnesota Medical School. Dr. John A. Kosiak, MD, MN is affiliated with Ridgeview.

Office Locations

Ridgeview

11850 Blackfoot Street Northwest Suite 150
Coon Rapids, MN 55433

(763) 433-0221

(763) 433-0235

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Noteworthy Medicare Patient Procedures Performed by Dr. John A. Kosiak, MD, MN in 2023

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

Top 5%

By Affordability:

external beam radiation therapy

In 2023, Dr. John A. Kosiak, MD, MN had a list price for external beam radiation therapy (EBRT) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Minnesota. 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:

radiation therapy

In 2012, Dr. John A. Kosiak, MD, MN performed more radiation therapy procedures for Medicare patients than 75% of providers in related specialties within Minnesota.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2012 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	164
radiation therapy	642

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2013 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	108
radiation therapy	520

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	75
Female	77

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

**Age**
From 65 to 74	57
From 75 to 84	56
85 and over	19
Less than 65	20

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2013

Hypertension	63
High Cholesterol	47
Stroke	8
Ischemic Heart Disease	28
Depression	24
Chronic Kidney Disease	34
Asthma	7
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	27
Diabetes	20
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2014 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	153
radiation therapy	501

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	61
Female	69

**Age**
From 65 to 74	64
From 75 to 84	42
85 and over	13
Less than 65	11

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2014

Hypertension	67
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	41
Depression	17
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	22
Diabetes	29
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2015 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	141
radiation therapy	339

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	136
Female	146

**Ethnicity**
Non-Hispanic White	260
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	84
85 and over	34
Less than 65	46

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2015

Hypertension	62
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	35
Depression	24
Chronic Kidney Disease	30
Asthma	14
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	23
Chronic Obstructive Pulmonary Disease	29
Diabetes	23
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2016 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	135
radiation therapy	446

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	67
Female	87

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

**Age**
From 65 to 74	65
From 75 to 84	50
85 and over	16
Less than 65	23

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2016

Hypertension	61
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	37
Depression	29
Chronic Kidney Disease	36
Asthma	26
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	21
Diabetes	25
Dementia	11
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2017 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	79
radiation therapy	281

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	54
Female	53

**Age**
From 65 to 74	45
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2017

Hypertension	75
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	24
Chronic Obstructive Pulmonary Disease	30
Diabetes	21
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2018 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	129
radiation therapy	247

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	52
Female	48

**Age**
From 65 to 74	41
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2018

Hypertension	64
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	37
Depression	29
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	28
Diabetes	22
Dementia	0
Cancer	73

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2019 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	203
radiation therapy	438

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	69
Female	96

**Age**
From 65 to 74	78
From 75 to 84	48
85 and over	22
Less than 65	17

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2019

Hypertension	74
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	44
Depression	23
Chronic Kidney Disease	39
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	25
Diabetes	28
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2020 were radiation therapy and image guided procedures.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	141
image guided procedures	32
radiation therapy	421

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	65
Female	76

**Age**
From 65 to 74	57
From 75 to 84	55
85 and over	12
Less than 65	17

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2020

Hypertension	75
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	35
Depression	25
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	31
Diabetes	31
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2021 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	170
radiation therapy	307

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	65
Female	68

**Age**
From 65 to 74	68
From 75 to 84	47
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2021

Hypertension	75
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	24
Diabetes	31
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN during 2022 were radiation therapy.

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

doctor visit	175
radiation therapy	298

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Male	56
Female	70

**Age**
From 65 to 74	64
From 75 to 84	36
85 and over	14
Less than 65	12

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2022

Hypertension	66
High Cholesterol	56
Stroke	9
Ischemic Heart Disease	25
Depression	25
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	13
Atrial Fibrilation	19
Heart Failure	17
Chronic Obstructive Pulmonary Disease	25
Diabetes	25
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John A. Kosiak, MD, MN for Medicare patients.

The highest averages for the top procedures that Dr. John A. Kosiak, MD, MN treated as a radiation oncologist in Coon Rapids, MN were radiation therapy and image guided procedures.

doctor visit	145
image guided procedures	32
radiation therapy	403

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John A. Kosiak, MD, MN.

**Gender**
Female	71
Male	63

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	48
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
85 and over	11
75 to 84	43
Less than 65	13
65 to 74	59

Average of Total of Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John A. Kosiak, MD, MN treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	62
High Cholesterol	43
Stroke	1
Ischemic Heart Disease	33
Depression	22
Chronic Kidney Disease	31
Asthma	6
Osteoporosis	2
Heart Failure	17
Chronic Obstructive Pulmonary Disease	23
Diabetes	23
Atrial Fibrillation	12
Dementia	2
Cancer	68

Education & Training

Dr. John A. Kosiak, MD, MN graduated from University of Minnesota Medical School. He completed residency at University of Minnesota Affiliated Hospitals. He has a state license in Minnesota.

Medical School: University of Minnesota Medical School

Residency: University of Minnesota Affiliated Hospitals

Licensed In: Minnesota

Affiliations & Hospitals

Dr. John A. Kosiak, MD, MN is associated with these hospitals and organizations:

Ridgeview

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. John A. Kosiak, MD, MN. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Biocompatibles, Inc.	$1,182 THERASPHERE - BIO $1,182
Elekta, Inc.	$96 Perfection $96

**Types of Payments**
Travel and Lodging	$781
Food and Beverage	$348
Education	$150

Biography

Dr. John Kosiak's area of specialization is radiation oncology. He is affiliated with Ridgeview. Dr. Kosiak studied medicine at the University of Minnesota Medical School. For his residency, Dr. Kosiak trained at a hospital affiliated with the University of Minnesota.

Select Year:

Dr. John A. Kosiak, MD, MN

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John A. Kosiak, MD, MN in 2023

By Affordability:

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. John A. Kosiak, MD, MN in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Kosiak, MD, MN 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. John A. Kosiak, MD, MN From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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