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Dr. Walter G. Kao, MD

(450 Ratings)

Specializes in: Adult Cardiology

Weill Cornell Medical College

410 Dewey Street
Wisconsin Rapids, WI 54494

(715) 421-7900

Dr. Walter G. Kao, MD is a cardiologist in Portage, WI specializing in adult cardiology. He graduated from Weill Cornell Medical College. Dr. Walter G. Kao, MD is affiliated with Aspirus Health.

Office Locations

2817 New Pinery Road
Portage, WI 53901

(608) 745-4598

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410 Dewey Street
Wisconsin Rapids, WI 54494

(715) 421-7900

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700 S Park Street
Madison, WI 53715

(608) 260-2900

(608) 260-2967

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824 Illinois Avenue
Stevens Point, WI 54481

(715) 847-2611

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Noteworthy Medicare Patient Procedures Performed by Dr. Walter G. Kao, MD in 2024

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

Top 10%

By Affordability:

cardiac procedures

In 2024, Dr. Walter G. Kao, MD had a list price for cardiac procedures that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Wisconsin. 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:

stress EKG

By Affordability:

cardiac stress testing

stress testing

In 2012, among providers in related specialties within Wisconsin, Dr. Walter G. Kao, MD performed more stress EKG procedures for Medicare patients than 75% of them and he also had a list price for cardiac (heart) stress testing, and stress testing 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. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2012 were hospital care, inpatient care, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	39
catheterization	39
diagnostic procedures	70
doctor visit	190
hospital care	296
inpatient care	296
minimally invasive procedures	39

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2013 were hospital care, inpatient care, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	26
catheterization	26
diagnostic procedures	50
doctor visit	207
hospital care	242
inpatient care	242
minimally invasive procedures	26

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	164
Female	56

**Ethnicity**
Non-Hispanic White	201
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	37
85 and over	17
Less than 65	71

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2013

Hypertension	75
High Cholesterol	70
Stroke	9
Ischemic Heart Disease	75
Depression	25
Chronic Kidney Disease	64
Asthma	7
Osteoperosis	8
Atrial Fibrilation	33
Heart Failure	75
Chronic Obstructive Pulmonary Disease	16
Diabetes	47
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2014 were hospital care, inpatient care, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

blood draw	17
cardiac procedures	36
catheterization	36
diagnostic procedures	70
doctor visit	176
hospital care	270
inpatient care	270
minimally invasive procedures	36

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	141
Female	58

**Ethnicity**
Non-Hispanic White	178
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	0
85 and over	0
Less than 65	63

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2014

Hypertension	75
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	75
Depression	26
Chronic Kidney Disease	62
Asthma	9
Osteoperosis	12
Atrial Fibrilation	35
Heart Failure	75
Chronic Obstructive Pulmonary Disease	23
Diabetes	57
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2015 were hospital care, inpatient care, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

blood draw	18
cardiac procedures	35
catheterization	35
diagnostic procedures	64
doctor visit	200
hospital care	333
inpatient care	333
minimally invasive procedures	35

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	286
Female	116

**Ethnicity**
Non-Hispanic White	356
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	0
85 and over	0
Less than 65	150

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2015

Hypertension	75
High Cholesterol	60
Stroke	10
Ischemic Heart Disease	75
Depression	30
Chronic Kidney Disease	60
Asthma	14
Osteoperosis	0
Atrial Fibrilation	32
Heart Failure	75
Chronic Obstructive Pulmonary Disease	24
Diabetes	47
Dementia	10
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2016 were hospital care, inpatient care, minimally invasive procedures and catheterization.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	19
catheterization	19
diagnostic procedures	19
doctor visit	207
hospital care	224
inpatient care	224
minimally invasive procedures	19

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	136
Female	55

**Ethnicity**
Non-Hispanic White	175
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	0
85 and over	0
Less than 65	69

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2016

Hypertension	71
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	73
Depression	21
Chronic Kidney Disease	65
Asthma	19
Osteoperosis	7
Atrial Fibrilation	28
Heart Failure	75
Chronic Obstructive Pulmonary Disease	17
Diabetes	50
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2017 were hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

blood draw	15
doctor visit	181
hospital care	301
inpatient care	301

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	146
Female	61

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	0
85 and over	0
Less than 65	70

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2017

Hypertension	72
High Cholesterol	63
Stroke	8
Ischemic Heart Disease	72
Depression	31
Chronic Kidney Disease	66
Asthma	0
Osteoperosis	9
Atrial Fibrilation	33
Heart Failure	75
Chronic Obstructive Pulmonary Disease	19
Diabetes	50
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2018 were blood draw and lab tests.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

blood draw	36
doctor visit	52
lab tests	17

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	46
Female	29

**Age**
From 65 to 74	38
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2018

Hypertension	75
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	75
Depression	31
Chronic Kidney Disease	73
Asthma	0
Osteoperosis	0
Atrial Fibrilation	39
Heart Failure	75
Chronic Obstructive Pulmonary Disease	20
Diabetes	48
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2019 were blood draw and lab tests.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

blood draw	104
doctor visit	191
lab tests	50

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	74
Female	38

**Age**
From 65 to 74	43
From 75 to 84	31
85 and over	24
Less than 65	14

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	75
Depression	33
Chronic Kidney Disease	70
Asthma	0
Osteoperosis	10
Atrial Fibrilation	43
Heart Failure	75
Chronic Obstructive Pulmonary Disease	26
Diabetes	48
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

doctor visit	327

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	136
Female	133

**Age**
From 65 to 74	132
From 75 to 84	80
85 and over	28
Less than 65	29

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2020

Hypertension	75
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	55
Depression	22
Chronic Kidney Disease	36
Asthma	6
Osteoperosis	7
Atrial Fibrilation	25
Heart Failure	30
Chronic Obstructive Pulmonary Disease	18
Diabetes	28
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

doctor visit	397

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	143
Female	158

**Ethnicity**
Non-Hispanic White	285
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	81
85 and over	52
Less than 65	26

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2021

Hypertension	75
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	55
Depression	25
Chronic Kidney Disease	39
Asthma	7
Osteoperosis	8
Atrial Fibrilation	27
Heart Failure	32
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2022 were stress testing, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	19
doctor visit	57
hospital care	12
inpatient care	12
stress testing	19

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	39
Female	49

**Ethnicity**
Non-Hispanic White	77
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**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. Walter G. Kao, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	13
Atrial Fibrilation	35
Heart Failure	28
Chronic Obstructive Pulmonary Disease	22
Diabetes	26
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2023 were stress testing and cardiac procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	72
doctor visit	211
stress testing	72

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	115
Female	113

**Ethnicity**
Non-Hispanic White	216
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	126
From 75 to 84	57
85 and over	28
Less than 65	17

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	33
Depression	21
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	7
Atrial Fibrilation	32
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	25
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI during 2024 were stress testing and cardiac procedures.

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

cardiac procedures	88
doctor visit	288
stress testing	88

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	154
Female	150

**Ethnicity**
Non-Hispanic White	291
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	93
85 and over	34
Less than 65	17

Conditions of Medicare patients treated by Dr. Walter G. Kao, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	39
Depression	21
Chronic Kidney Disease	27
Asthma	9
Osteoperosis	13
Atrial Fibrilation	38
Heart Failure	31
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	4
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Walter G. Kao, MD for Medicare patients.

The highest averages for the top procedures that Dr. Walter G. Kao, MD treated as a cardiologist in Portage, WI were hospital care, inpatient care, stress testing and diagnostic procedures.

blood draw	38
cardiac procedures	41
catheterization	31
diagnostic procedures	54
doctor visit	206
hospital care	239
inpatient care	239
lab tests	33
minimally invasive procedures	31
stress testing	59

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Walter G. Kao, MD.

**Gender**
Male	121
Female	78

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	151
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	32
85 and over	14
Less than 65	40
65 to 74	93

Average of Total of Conditions of Medicare patients treated by Dr. Walter G. Kao, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Walter G. Kao, MD treated were hypertension, high cholesterol, ischemic heart disease and heart failure.

Hypertension	68
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	57
Depression	23
Chronic Kidney Disease	46
Asthma	6
Osteoporosis	7
Heart Failure	51
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Atrial Fibrillation	30
Cancer	9
Dementia	4

Education & Training

Dr. Walter G. Kao, MD graduated from Weill Cornell Medical College. He completed residency at Henry Ford Hospital. He is certified by the Board Certified: Board Certifications: American Board of Internal Medicine,-The American Board of Internal Medicine and has a state license in Wisconsin.

Medical School: Weill Cornell Medical College

Residency: Henry Ford Hospital

Board Certification: Board Certified: Board Certifications: American Board of Internal Medicine,-The American Board of Internal Medicine

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Walter G. Kao, MD is associated with these hospitals and organizations:

Aspirus Health

Ratings & Reviews

Dr. Walter G. Kao, MD has an exceptional overall rating with an average of 4.79 out of 5 stars based on 450 ratings. We collect ratings and reviews of Dr. Walter G. Kao, MD from all over the web to help you find the right in Portage, WI.

4.79

Overall Rating

(450 Ratings)

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General Payments

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

**Payments by Company**
Thoratec Corporation	$1,170 HeartMate III R and D $1,170
Novartis Pharmaceuticals Corporation	$25 LEQVIO $25
Amgen Inc.	$20 Repatha $20
Boehringer Ingelheim Pharmaceuticals, Inc.	$17 JARDIANCE $17

**Types of Payments**
Travel and Lodging	$863
Food and Beverage	$369

Biography

Dr. Walter Kao is a specialist in adult cardiology. Dr. Kao has a 5.0 out of 5 star average patient rating. He is professionally affiliated with Aspirus Health. He is a graduate of Weill Cornell Medical College. His training includes a residency program at Henry Ford Hospital.