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Home > WI Providers > Radiation Oncologists

Dr. James L. Leenstra, MD

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Specializes in: Radiation Oncology

University of Oklahoma College of Medicine (2002)

Professional interests include: cancer, gastrointestinal cancer, stereotactic body radiation therapy (SBRT), and more.

700 West Avenue S
La Crosse, WI 54601

(608) 785-0940

Dr. James L. Leenstra, MD is a radiation oncologist in Eau Claire, WI specializing in radiation oncology. He graduated from University of Oklahoma College of Medicine in 2002 and has 24 years of experience. Dr. James L. Leenstra, MD is affiliated with Mayo Clinic.

Office Locations

1400 Bellinger Street
Eau Claire, WI 54703

(715) 838-5222

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200 1st Street Sw
Rochester, MN 55905

(507) 284-2511

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700 West Avenue S
La Crosse, WI 54601

(608) 785-0940

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2012 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	337
radiation therapy	415

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2013 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	302
radiation therapy	361

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	92
Female	95

**Ethnicity**
Non-Hispanic White	174
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	85
From 75 to 84	66
85 and over	16
Less than 65	20

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2013

Hypertension	58
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	23
Dementia	7
Cancer	72

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2014 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	408
radiation therapy	481

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	100
Female	124

**Ethnicity**
Non-Hispanic White	206
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	73
85 and over	16
Less than 65	31

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2014

Hypertension	58
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	30
Depression	17
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	21
Diabetes	29
Dementia	9
Cancer	73

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2015 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	261
radiation therapy	88

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	212
Female	206

**Ethnicity**
Non-Hispanic White	390
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	158
85 and over	32
Less than 65	54

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2015

Hypertension	59
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	29
Asthma	11
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	6
Cancer	63

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2016 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	128
radiation therapy	149

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	43
Female	29

**Ethnicity**
Non-Hispanic White	72
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2016

Hypertension	57
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	28
Depression	21
Chronic Kidney Disease	35
Asthma	19
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	18
Diabetes	25
Dementia	0
Cancer	72

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2017 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	127
radiation therapy	129

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	44
Female	34

**Age**
From 65 to 74	37
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2017

Hypertension	65
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	33
Depression	19
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	22
Diabetes	18
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2018 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	125
radiation therapy	142

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	43
Female	39

**Age**
From 65 to 74	36
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2018

Hypertension	68
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	35
Depression	26
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	18
Diabetes	21
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2019 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	208
radiation therapy	240

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	80
Female	48

**Age**
From 65 to 74	54
From 75 to 84	50
85 and over	13
Less than 65	11

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2019

Hypertension	58
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	33
Depression	20
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	23
Dementia	0
Cancer	74

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2020 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	146
radiation therapy	98

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	70
Female	37

**Age**
From 65 to 74	56
From 75 to 84	32
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2020

Hypertension	64
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	36
Depression	18
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	20
Diabetes	24
Dementia	16
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2021 were radiation therapy.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	252
radiation therapy	175

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	86
Female	47

**Age**
From 65 to 74	69
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2021

Hypertension	63
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	33
Depression	19
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	8
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	10
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI during 2022 were radiation therapy and image guided procedures.

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

doctor visit	196
image guided procedures	47
radiation therapy	207

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	121
Female	64

**Ethnicity**
Non-Hispanic White	172
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	62
85 and over	23
Less than 65	12

Conditions of Medicare patients treated by Dr. James L. Leenstra, MD in 2022

Hypertension	70
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	24
Depression	16
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. James L. Leenstra, MD for Medicare patients.

The highest averages for the top procedures that Dr. James L. Leenstra, MD treated as a radiation oncologist in Eau Claire, WI were radiation therapy and image guided procedures.

doctor visit	226
image guided procedures	47
radiation therapy	225

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. James L. Leenstra, MD.

**Gender**
Male	81
Female	65

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	92
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	51
85 and over	9
Less than 65	11
65 to 74	67

Average of Total of Conditions of Medicare patients treated by Dr. James L. Leenstra, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. James L. Leenstra, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	56
High Cholesterol	45
Stroke	1
Ischemic Heart Disease	28
Depression	17
Chronic Kidney Disease	27
Asthma	4
Osteoporosis	3
Heart Failure	13
Chronic Obstructive Pulmonary Disease	16
Diabetes	22
Atrial Fibrillation	8
Dementia	4
Cancer	66

Education & Training

Dr. James L. Leenstra, MD graduated from University of Oklahoma College of Medicine in 2002. He completed residency at Mayo Clinic. He is certified by the Radiation Oncology American Board of Radiology and has a state license in Wisconsin.

Medical School: University of Oklahoma College of Medicine (2002)

Residency: Mayo Clinic (2010)

Board Certification: Radiation Oncology American Board of Radiology (2011)

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. James L. Leenstra, MD is associated with these hospitals and organizations:

Mayo Clinic

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. James L. Leenstra, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Bayer HealthCare Pharmaceuticals Inc.	$107 Xofigo $107

**Types of Payments**
Food and Beverage	$107

Biography

Dr. James Leenstra's area of specialization is radiation oncology. His clinical interests include lung cancer, stereotactic body radiation therapy (SBRT), and breast cancer. His education and training includes medical school at the University of Oklahoma College of Medicine and residency at Mayo Clinic. Awards and/or distinctions Dr. Leenstra has received include Top Performer Award - Mayo Clinic Rochester; Mayo Clinic Regional Practice Clinical Provider of the Year Award - Mayo Clinic Rochester; and Living the Mission Award - St. Mary's and St. Vincent Hospitals. He is affiliated with Mayo Clinic.