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Dr. Danielle Marie Henkel, MD

Specializes in: Adult Cardiology
Mayo Medical School
Professional interests include: tachycardia (very fast heart rate), stress testing, coronary artery disease, and more.
402 E 2nd Street
Duluth, MN 55805

Dr. Danielle Marie Henkel, MD is a cardiologist in Duluth, MN specializing in adult cardiology. She graduated from Mayo Medical School. Dr. Danielle Marie Henkel, MD is affiliated with Essentia Health.

View Doctor's Full Profile (218) 786-4000

Office Locations

402 E 2nd Street
Duluth, MN 55805
open_in_new

Some issues Dr. Danielle Marie Henkel, MD can help you with:

Coronary Artery Disease

Coronary artery disease (CAD) is the most common type of heart disease. It happens when the blood vessels carrying blood to the heart, called coronary arteries, narrow and harden. This occurs when cholesterol, a type of fat found in the blood, builds up to form plaque, which sticks to the inner walls of the arteries. As plaque accumulates, less blood can flow through the arteries, which may lead to the following:

  • Angina, which is chest pain that occurs when the heart does not receive enough blood flow.
  • Heart attack, which happens if the arteries leading to the heart are completely blocked.
  • Arrhythmia, or irregular heartbeat, which can develop if the heart does not have enough blood supply.
  • Heart failure, which may occur if a heart attack damages the heart and it becomes too weak to pump enough blood to the rest of the body.

Certain factors may increase risk for the disease, like smoking, lack of exercise, being overweight, high cholesterol, high blood pressure, and diabetes. CAD tends to develop over decades, so it can go undetected until it has become quite severe. A diagnosis may be established using such tests as:

  • Electrocardiogram (ECG), which records the heart's electrical activity over a period of time. ECGs can detect whether there is enough blood flow to the heart or if a heart attack has occurred.
  • Echocardiogram (echo), which creates images of the heart using sound waves. Echos can show whether the heart is able to pump blood normally.
  • Stress tests, where an ECG or echo is combined with exercise, like riding a stationary bike or walking on a treadmill. This test is done to find out if the heart can function properly while performing a strenuous activity.

Treatments for the disease include medications such as vasodilators, like nitroglycerin, which dilates (widens) the coronary arteries. CAD may also be treated by a procedure called angioplasty with stent placement, where a balloon is inflated inside a diseased artery to flatten the plaque deposits against the artery walls, creating more room for blood to flow.

In some severe cases of the disease, multiple arteries may be blocked, and an open heart surgery called coronary artery bypass surgery may be necessary. This operation transplants a vessel from another part of the body to form a graft that goes past the narrowed arteries, thus enabling blood to flow around those arteries.

Heart Attack

A heart attack is a serious medical event that happens when the blood supplying oxygen to the heart is cut off, usually because of a blockage in an artery. This results in damage or death of part of the heart muscle. The heart can heal, but like any part of the body that was injured it leaves a scar. This scar tissue does not contract effectively, so the ability of the heart to pump is lowered after a heart attack.

A heart attack, sometimes called a myocardial infarction, can happen without warning. However there are certain factors that raise the risk of heart attack. Some of these are:

  • Age
  • Gender (most heart attack sufferers are male)
  • A family history of heart attacks
  • Smoking
  • Obesity
  • High cholesterol
  • High blood pressure
  • Diabetes
  • Unhealthy lifestyle choices (lack of exercise, poor diet, too much alcohol or stress)

Heart attacks typically feel like pain or pressure in the chest that can radiate out to the back, arm, or jaw. Some other symptoms can include fatigue or weakness, shortness of breath, sweating, and nausea.

Treatment aims to increase blood flow to the heart muscle by opening up blocked blood vessels. Medications are sometimes used to dissolve clots in the arteries. Aspirin and other medications such as Plavix can thin the blood and make clots less likely to form. Dilators can widen blood vessels to make room for more blood to flow. Doctors can also use a procedure called catheterization to look at the blood vessels around the heart directly, place stents, or widen vessels using angioplasty. In extreme cases bypass surgery can be used to help blood flow better. After recovery, it is important to lead a healthy lifestyle and take any prescribed medications in order to protect the heart.

Heart Problems

The heart is one of the most important organs in the body. This smooth muscle expands and contracts rhythmically an entire lifetime, pumping blood to the lungs and then to every other cell in the body. When heart problems occur, it becomes difficult for the body to get the nutrients and oxygen it needs via the blood. So while there are a variety of illnesses and disorders that affect the heart, most of them cause weakness, exhaustion and shortness of breath. The most common heart conditions include heart disease, angina, arrhythmia, and valve disorders.

Heart disease is the leading cause of death in the United States for both men and women. This includes coronary artery disease, heart attacks, congestive heart failure, and congenital heart disease. Some conditions, such as genetics, cannot be controlled. But there are many other things one can do to lower their risk for heart disease. Controlling high blood pressure and cholesterol levels, reducing or stopping smoking, exercising more and losing weight if needed, and eating a diet low in sodium can all protect the heart.

Angina is a squeezing type of chest pain that happens when the muscles around the heart don't get enough oxygen. It can be regular or infrequent. Usually, angina is caused by coronary heart disease. However, not all chest pain is angina. Chest pain can also be caused by a lung infection or panic attack, for example, so it is important to have any sudden pain checked.

Arrhythmia is the word for when the heart beats too fast, too slow, or irregularly with skipped beats. It can feel frightening, and depending on the type it can be dangerous, but in most cases arrhythmia is not serious and can be treated. It is very common, especially in older adults.

Heart valve problems can happen in any one of the the heart's four valves that keep blood flowing where it needs to go. Babies can be born with problems in their heart valves, or valves can be damaged by infections. The valves can stiffen and become less mobile, or they can stop closing properly and 'leak' when the heart beats. Valve problems can usually be repaired surgically.

Noteworthy Medicare Patient Procedures Performed by Dr. Danielle Marie Henkel, MD in 2023

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

Top 25%

By Affordability:

nuclear stress test
SPECT scan

In 2012, Dr. Danielle Marie Henkel, MD had a list price for nuclear stress test (myocardial perfusion imaging), and SPECT scan that was lower than the list prices billed to Medicare by 75% 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. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2012 were ultrasound (sonogram) and cardiac procedures.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 31
doctor visit 20
ultrasound (sonogram) 31

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2013 were ultrasound (sonogram), cardiac procedures and stress testing.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 171
doctor visit 205
stress testing 21
ultrasound (sonogram) 171

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 160
Female 228
Ethnicity
Non-Hispanic White 376
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 140
From 75 to 84 128
85 and over 57
Less than 65 63

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2013

Hypertension 61
High Cholesterol 52
Stroke 4
Ischemic Heart Disease 39
Depression 19
Chronic Kidney Disease 16
Asthma 7
Osteoperosis 8
Atrial Fibrilation 20
Heart Failure 25
Chronic Obstructive Pulmonary Disease 17
Diabetes 28
Dementia 7
Cancer 7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2014 were ultrasound (sonogram), cardiac procedures and stress testing.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 93
doctor visit 177
stress testing 17
ultrasound (sonogram) 93

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 144
Female 151
Ethnicity
Non-Hispanic White 275
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 109
From 75 to 84 82
85 and over 46
Less than 65 58

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2014

Hypertension 63
High Cholesterol 49
Stroke 0
Ischemic Heart Disease 43
Depression 24
Chronic Kidney Disease 23
Asthma 5
Osteoperosis 5
Atrial Fibrilation 24
Heart Failure 31
Chronic Obstructive Pulmonary Disease 18
Diabetes 34
Dementia 6
Cancer 5

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2015 were ultrasound (sonogram), cardiac procedures, stress testing and hospital care.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 132
doctor visit 66
hospital care 12
inpatient care 12
stress testing 17
ultrasound (sonogram) 132

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 232
Female 264
Ethnicity
Non-Hispanic White 466
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 208
From 75 to 84 144
85 and over 106
Less than 65 38

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2015

Hypertension 75
High Cholesterol 69
Stroke 15
Ischemic Heart Disease 56
Depression 30
Chronic Kidney Disease 42
Asthma 25
Osteoperosis 13
Atrial Fibrilation 33
Heart Failure 34
Chronic Obstructive Pulmonary Disease 23
Diabetes 31
Dementia 13
Cancer 12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2016 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 359
doctor visit 316
hospital care 277
inpatient care 277
stress testing 14
ultrasound (sonogram) 359

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 384
Female 448
Ethnicity
Non-Hispanic White 765
Black 13
Hispanic 30
Asian 0
Other 13
Native American 0
Age
From 65 to 74 364
From 75 to 84 285
85 and over 120
Less than 65 63

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2016

Hypertension 75
High Cholesterol 66
Stroke 11
Ischemic Heart Disease 53
Depression 27
Chronic Kidney Disease 46
Asthma 29
Osteoperosis 9
Atrial Fibrilation 27
Heart Failure 38
Chronic Obstructive Pulmonary Disease 26
Diabetes 31
Dementia 18
Cancer 13

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2018 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 295
doctor visit 275
stress testing 64
ultrasound (sonogram) 265

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 224
Female 267
Ethnicity
Non-Hispanic White 312
Black 41
Hispanic 92
Asian 30
Other 0
Native American 0
Age
From 65 to 74 185
From 75 to 84 163
85 and over 74
Less than 65 69

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2018

Hypertension 75
High Cholesterol 62
Stroke 13
Ischemic Heart Disease 59
Depression 27
Chronic Kidney Disease 52
Asthma 10
Osteoperosis 12
Atrial Fibrilation 26
Heart Failure 54
Chronic Obstructive Pulmonary Disease 23
Diabetes 44
Dementia 17
Cancer 16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and minimally invasive procedures.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 505
doctor visit 186
minimally invasive procedures 28
stress testing 85
ultrasound (sonogram) 472

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 289
Female 328
Ethnicity
Non-Hispanic White 358
Black 70
Hispanic 122
Asian 45
Other 0
Native American 0
Age
From 65 to 74 229
From 75 to 84 188
85 and over 96
Less than 65 104

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2019

Hypertension 75
High Cholesterol 65
Stroke 10
Ischemic Heart Disease 60
Depression 24
Chronic Kidney Disease 50
Asthma 10
Osteoperosis 12
Atrial Fibrilation 29
Heart Failure 57
Chronic Obstructive Pulmonary Disease 20
Diabetes 44
Dementia 16
Cancer 15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and minimally invasive procedures.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 423
doctor visit 113
minimally invasive procedures 25
stress testing 40
ultrasound (sonogram) 407

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 245
Female 277
Ethnicity
Non-Hispanic White 299
Black 58
Hispanic 118
Asian 24
Other 0
Native American 0
Age
From 65 to 74 214
From 75 to 84 139
85 and over 70
Less than 65 99

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2020

Hypertension 75
High Cholesterol 65
Stroke 12
Ischemic Heart Disease 62
Depression 27
Chronic Kidney Disease 52
Asthma 11
Osteoperosis 10
Atrial Fibrilation 27
Heart Failure 56
Chronic Obstructive Pulmonary Disease 23
Diabetes 45
Dementia 17
Cancer 14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and minimally invasive procedures.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 692
cardioversion 16
doctor visit 203
minimally invasive procedures 37
stress testing 51
ultrasound (sonogram) 673

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 392
Female 446
Ethnicity
Non-Hispanic White 495
Black 76
Hispanic 173
Asian 54
Other 0
Native American 0
Age
From 65 to 74 329
From 75 to 84 262
85 and over 127
Less than 65 120

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2021

Hypertension 75
High Cholesterol 64
Stroke 12
Ischemic Heart Disease 56
Depression 25
Chronic Kidney Disease 52
Asthma 9
Osteoperosis 12
Atrial Fibrilation 30
Heart Failure 58
Chronic Obstructive Pulmonary Disease 16
Diabetes 45
Dementia 16
Cancer 13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and minimally invasive procedures.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 565
cardioversion 11
doctor visit 72
minimally invasive procedures 28
stress testing 39
ultrasound (sonogram) 551

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 323
Female 348
Ethnicity
Non-Hispanic White 386
Black 63
Hispanic 159
Asian 34
Other 0
Native American 0
Age
From 65 to 74 232
From 75 to 84 235
85 and over 111
Less than 65 93

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 14
Ischemic Heart Disease 46
Depression 24
Chronic Kidney Disease 39
Asthma 12
Osteoperosis 16
Atrial Fibrilation 42
Heart Failure 56
Chronic Obstructive Pulmonary Disease 25
Diabetes 46
Dementia 11
Cancer 18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN during 2023 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

cardiac procedures 96
nuclear scan 14
stress testing 33
ultrasound (sonogram) 63

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 74
Female 77
Age
From 65 to 74 64
From 75 to 84 45
85 and over 23
Less than 65 19

Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 45
Depression 25
Chronic Kidney Disease 26
Asthma 7
Osteoperosis 13
Atrial Fibrilation 43
Heart Failure 49
Chronic Obstructive Pulmonary Disease 24
Diabetes 34
Dementia 0
Cancer 17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Danielle Marie Henkel, MD for Medicare patients.

The highest averages for the top procedures that Dr. Danielle Marie Henkel, MD treated as a cardiologist in Duluth, MN were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

cardiac procedures 305
cardioversion 13
doctor visit 163
hospital care 144
inpatient care 144
minimally invasive procedures 29
nuclear scan 14
stress testing 38
ultrasound (sonogram) 292

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Danielle Marie Henkel, MD.

Gender
Male 224
Female 257
Ethnicity
Black / African American 29
Asian / Pacific Islander 17
Non-Hispanic White 339
Hispanic 63
Native American / Alaskan Native 0
Other 1
Age
75 to 84 151
85 and over 75
Less than 65 66
65 to 74 188

Average of Total of Conditions of Medicare patients treated by Dr. Danielle Marie Henkel, MD From 2012 - 2023

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

Hypertension 65
High Cholesterol 58
Stroke 9
Ischemic Heart Disease 47
Depression 22
Chronic Kidney Disease 36
Asthma 11
Osteoporosis 10
Heart Failure 41
Chronic Obstructive Pulmonary Disease 19
Diabetes 34
Atrial Fibrillation 27
Cancer 11
Dementia 11

Education & Training

Dr. Danielle Marie Henkel, MD graduated from Mayo Medical School. She completed residency at Mayo Clinic. She is certified by the American Board of Internal Medicine: Cardiovascular Disease and has a state license in Wisconsin.

Medical School: Mayo Medical School

Residency: Mayo Clinic

Board Certification: American Board of Internal Medicine: Cardiovascular Disease

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Danielle Marie Henkel, MD is associated with these hospitals and organizations:

Essentia Health

Ratings & Reviews

Dr. Danielle Marie Henkel, MD has an exceptional overall rating with an average of 4.91 out of 5 stars based on 75 ratings. We collect ratings and reviews of Dr. Danielle Marie Henkel, MD from all over the web to help you find the right in Duluth, MN. 

4.91
Overall Rating
Leave a Review
Reviews From Around The Web
Overall Rating: 5.0 2024-11-06
Patient verified via Press Ganey
I felt heard and respected. I was understood and treated very professionally. The conversational way Dr. Henkel way listened and explained was just what I needed. And she said I have a "beautiful heart!" I love that!
Overall Rating: 5.0 2025-03-28
Patient verified via Press Ganey
Dr Danielle Henkel is the best. She listens,.. Doesn't push drugs but encourages lifestyle. That is me. Then prints supporting documents
Overall Rating: 5.0 2024-01-28
Patient verified via Press Ganey
Excellent explanations of interpretation of nuclear med stress test. Details of scan shown including radiotracer artifact below heart.
Overall Rating: 5.0 2024-12-28
Patient verified via Press Ganey
Dr Henkel is amazing in all aspects. Knowledgeable and thoughtful, she's able to make insightful discoveries about my cardio issues.
Overall Rating: 5.0 2025-11-29
Patient verified via Press Ganey
professional, caring, knowledgeable, total confidence, complete, "comfortable" experience
Overall Rating: 5.0 2024-03-09
Patient verified via Press Ganey
Dr. Henkel was very informative and great doctor to patient communication
Overall Rating: 5.0 2025-10-27
Patient verified via Press Ganey
The Doctor was great best I have ever had.

General Payments

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

Payments by Company
Edwards Lifesciences Corporation $1,720 Edwards SAPIEN 3 Transcatheter Heart Valve
$1,700 		Transcatheter Heart Valves
$19
Abbott Laboratories $72 CardioMEMS
$72
Amgen Inc. $24 Repatha
$24
Medtronic, Inc. $21 COBALT DR MRI SURESCAN
$21
ARALEZ PHARMACEUTICALS US INC. $13 YOSPRALA
$13
Types of Payments
Travel and Lodging $968
Food and Beverage $881

Biography

Dr. Danielle Henkel practices adult cardiology. After completing medical school at Mayo Medical School, she performed her residency at Mayo Clinic. These areas are among Dr. Henkel's clinical interests: myxoma, coronary angiogram, and myocarditis. Her patients gave her an average rating of 5.0 stars (out of 5). She is affiliated with Essentia Health-Polinsky Medical Rehabilitation Center (Duluth). She is not accepting new patients at this time according to Doctor.com.

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