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Dr. Mark W. Erhard, MD

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Specializes in: Interventional Cardiology

1001 East Superior Street Suite 201, Lakeview Building
Duluth, MN 55802

(218) 249-3057

Dr. Mark W. Erhard, MD is an interventional cardiologist in Duluth, MN specializing in interventional cardiology. Dr. Mark W. Erhard, MD is affiliated with Aspirus Health.

Office Locations

Aspirus Health

1001 East Superior Street Suite 201, Lakeview Building
Duluth, MN 55802

(218) 249-3057

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In The News

“So in 2008, Swenson and another cardiologist, Mark Erhard, left a seven-physician independent practice to launch their own clinic, East Metro Cardiology, in Maplewood.”—"Minnesota's independent doctors are in critical condition | MinnPost", Minn Post, April 2013

“Dr. Mark Erhard, a cardiologist at St. Joseph's Hospital, said he questioned whether the decrease in the number of stents used last month matched a reduction in the overall number of angioplasty...”—"Cardiac-stent use slips further in April", Twin Cities Pioneer Press, May 2007

“Dr. Mark Erhard, director of the cardiac lab at St. Joseph's Hospital in St. Paul, said he anticipated that there could be a reduction in procedures.”—"Stent study raises doubt", Twin Cities Pioneer Press, March 2007

Noteworthy Medicare Patient Procedures Performed by Dr. Mark W. Erhard, MD in 2023

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

Top 5%

By Affordability:

cardiac imaging

In 2023, Dr. Mark W. Erhard, MD had a list price for cardiac imaging 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 10%

By Affordability:

transesophageal echocardiography

In 2023, Dr. Mark W. Erhard, MD had a list price for transesophageal echocardiography (TEE) that was lower than the list prices billed to Medicare by 90% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2012 were cardiac procedures, ultrasound (sonogram), stress testing and vascular procedures.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	15
cardiac procedures	205
catheterization	19
diagnostic procedures	19
doctor visit	295
minimally invasive procedures	19
nuclear scan	29
stress testing	72
ultrasound (sonogram)	138
vascular procedures	33

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2013 were cardiac procedures, ultrasound (sonogram), stress testing and vascular procedures.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	30
cardiac procedures	202
catheterization	19
diagnostic procedures	19
doctor visit	306
hospital care	12
inpatient care	12
minimally invasive procedures	19
nuclear scan	20
stress testing	59
ultrasound (sonogram)	138
vascular procedures	36

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	183
Female	223

**Ethnicity**
Non-Hispanic White	383
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	164
85 and over	89
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	8
Ischemic Heart Disease	56
Depression	30
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	15
Atrial Fibrilation	30
Heart Failure	34
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	19
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2014 were cardiac procedures, ultrasound (sonogram), ambulatory monitoring and stress testing.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	33
cardiac procedures	151
doctor visit	226
stress testing	30
ultrasound (sonogram)	118

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	135
Female	140

**Ethnicity**
Non-Hispanic White	256
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	110
85 and over	59
Less than 65	32

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2014

Hypertension	71
High Cholesterol	57
Stroke	10
Ischemic Heart Disease	51
Depression	23
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	9
Atrial Fibrilation	32
Heart Failure	36
Chronic Obstructive Pulmonary Disease	19
Diabetes	33
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2015 were cardiac procedures, ultrasound (sonogram), ambulatory monitoring and stress testing.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	58
cardiac procedures	230
doctor visit	376
stress testing	43
ultrasound (sonogram)	192
vascular procedures	20

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	284
Female	264

**Ethnicity**
Non-Hispanic White	506
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	152
From 75 to 84	224
85 and over	134
Less than 65	38

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2015

Hypertension	62
High Cholesterol	54
Stroke	5
Ischemic Heart Disease	47
Depression	16
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	4
Atrial Fibrilation	32
Heart Failure	25
Chronic Obstructive Pulmonary Disease	9
Diabetes	26
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2016 were cardiac procedures, ultrasound (sonogram), ambulatory monitoring and stress testing.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	45
cardiac procedures	234
doctor visit	400
stress testing	37
ultrasound (sonogram)	215
vascular procedures	26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	146
Female	135

**Ethnicity**
Non-Hispanic White	265
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	108
85 and over	63
Less than 65	16

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2016

Hypertension	69
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	47
Depression	16
Chronic Kidney Disease	27
Asthma	12
Osteoperosis	4
Atrial Fibrilation	29
Heart Failure	24
Chronic Obstructive Pulmonary Disease	9
Diabetes	28
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2017 were cardiac procedures, ultrasound (sonogram), ambulatory monitoring and stress testing.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	35
cardiac procedures	204
doctor visit	313
stress testing	28
ultrasound (sonogram)	191
vascular procedures	22

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	127
Female	125

**Ethnicity**
Non-Hispanic White	237
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	78
From 75 to 84	95
85 and over	64
Less than 65	15

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2017

Hypertension	70
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	46
Depression	17
Chronic Kidney Disease	31
Asthma	5
Osteoperosis	5
Atrial Fibrilation	32
Heart Failure	26
Chronic Obstructive Pulmonary Disease	8
Diabetes	28
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2018 were cardiac procedures, ultrasound (sonogram), ambulatory monitoring and stress testing.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	32
cardiac procedures	201
doctor visit	335
stress testing	31
ultrasound (sonogram)	185
vascular procedures	16

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	150
Female	124

**Ethnicity**
Non-Hispanic White	256
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	98
85 and over	77
Less than 65	17

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2018

Hypertension	67
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	47
Depression	14
Chronic Kidney Disease	30
Asthma	5
Osteoperosis	4
Atrial Fibrilation	30
Heart Failure	27
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and ambulatory monitoring.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	56
cardiac procedures	326
doctor visit	581
stress testing	65
ultrasound (sonogram)	306
vascular procedures	36

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	232
Female	185

**Ethnicity**
Non-Hispanic White	393
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	151
85 and over	85
Less than 65	15

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2019

Hypertension	72
High Cholesterol	65
Stroke	6
Ischemic Heart Disease	47
Depression	19
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	7
Atrial Fibrilation	31
Heart Failure	26
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and ambulatory monitoring.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

ambulatory monitoring	29
cardiac procedures	212
doctor visit	423
stress testing	34
ultrasound (sonogram)	205
vascular procedures	22

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	192
Female	160

**Ethnicity**
Non-Hispanic White	332
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	136
From 75 to 84	129
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2020

Hypertension	70
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	51
Depression	20
Chronic Kidney Disease	32
Asthma	4
Osteoperosis	7
Atrial Fibrilation	34
Heart Failure	28
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2021 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

cardiac procedures	173
doctor visit	204
hospital care	46
inpatient care	46
minimally invasive procedures	13
nuclear scan	20
stress testing	20
ultrasound (sonogram)	153

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	354
Female	337

**Ethnicity**
Non-Hispanic White	637
Black	0
Hispanic	0
Asian	0
Other	13
Native American	30

**Age**
From 65 to 74	273
From 75 to 84	206
85 and over	105
Less than 65	107

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2021

Hypertension	75
High Cholesterol	61
Stroke	10
Ischemic Heart Disease	50
Depression	29
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	9
Atrial Fibrilation	28
Heart Failure	37
Chronic Obstructive Pulmonary Disease	22
Diabetes	36
Dementia	13
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN during 2022 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

cardiac procedures	290
doctor visit	200
hospital care	68
inpatient care	68
minimally invasive procedures	14
nuclear scan	39
stress testing	39
ultrasound (sonogram)	251

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	519
Female	479

**Ethnicity**
Non-Hispanic White	928
Black	0
Hispanic	0
Asian	0
Other	13
Native American	43

**Age**
From 65 to 74	394
From 75 to 84	293
85 and over	167
Less than 65	144

Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD in 2022

Hypertension	75
High Cholesterol	71
Stroke	14
Ischemic Heart Disease	38
Depression	26
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	11
Atrial Fibrilation	37
Heart Failure	32
Chronic Obstructive Pulmonary Disease	22
Diabetes	33
Dementia	9
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark W. Erhard, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark W. Erhard, MD treated as an interventional cardiologist in Duluth, MN were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

ambulatory monitoring	37
cardiac procedures	220
catheterization	19
diagnostic procedures	19
doctor visit	332
hospital care	42
inpatient care	42
minimally invasive procedures	16
nuclear scan	27
stress testing	41
ultrasound (sonogram)	190
vascular procedures	26

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark W. Erhard, MD.

**Gender**
Male	211
Female	197

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	381
Native American / Alaskan Native	6
Hispanic	0
Other	3

**Age**
75 to 84	143
85 and over	76
Less than 65	39
65 to 74	141

Average of Total of Conditions of Medicare patients treated by Dr. Mark W. Erhard, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark W. Erhard, MD treated were hypertension, high cholesterol, ischemic heart disease and atrial fibrilation.

Hypertension	64
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	43
Depression	19
Chronic Kidney Disease	28
Asthma	6
Osteoporosis	6
Heart Failure	26
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Atrial Fibrillation	28
Dementia	9
Cancer	10

Education & Training

He has a state license in Minnesota.

Licensed In: Minnesota

Affiliations & Hospitals

Dr. Mark W. Erhard, MD is associated with these hospitals and organizations:

Aspirus Health

Ratings & Reviews

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General Payments

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

**Payments by Company**
Medtronic Vascular, Inc.	$127 CoreValve Evolut $99	Cardiac Monitors - Insertable $28
Abbott Laboratories	$122 Assurity Pacemaker $80	Mitra Clip system $42
Boehringer Ingelheim Pharmaceuticals, Inc.	$65 Pradaxa $65
Janssen Pharmaceuticals, Inc	$56 XARELTO $56
E.R. Squibb & Sons, L.L.C.	$46 ELIQUIS $46
Other	$110 BRILINTA $35	NON-PRODUCT $15	LEQVIO $13	Effient $13	OPSUMIT MACITENTAN $13	Other $21

**Types of Payments**
Food and Beverage	$526

Biography

Dr. Mark Erhard practices interventional cardiology. He graduated from the University of South Florida (USF) College of Medicine. Dr. Erhard is affiliated with Aspirus Health.