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Dr. John P. Slovak, MD

Accepting New Patients
(John P. Slovak, MD)
Specializes in: Cardiology (Heart Disease)
Drexel University College of Medicine (1976)
Professional interests include: dilated cardiomyopathy, fibromuscular dysplasia, athlete's heart, and more.
Lancaster General Health Harrisburg Avenue
Lancaster, PA 17603

Dr. John P. Slovak, MD is a cardiologist in Lancaster, PA specializing in cardiology (heart disease). He graduated from Drexel University College of Medicine in 1976 and has 50 years of experience.

View Doctor's Full Profile 1-888-544-4636

Office Locations

Lancaster General Health Harrisburg Avenue
Lancaster, PA 17603
open_in_new
217 Harrisburg Avenue
Lancaster, PA 17603
(717) 544-8300
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Some issues Dr. John P. Slovak, 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2012 were hospital care, inpatient care, cardiac procedures and stress testing.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 171
doctor visit 1617
hospital care 993
inpatient care 964
outpatient care 29
preventive care 15
stress testing 108
ultrasound (sonogram) 63
vaccines 15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2013 were hospital care, inpatient care, stress testing and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 31
doctor visit 1619
hospital care 507
inpatient care 507
preventive care 24
stress testing 31
vaccines 24

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 791
Female 743
Ethnicity
Non-Hispanic White 1448
Black 24
Hispanic 45
Asian 0
Other 0
Native American 0
Age
From 65 to 74 390
From 75 to 84 597
85 and over 438
Less than 65 109

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2013

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 72
Depression 22
Chronic Kidney Disease 39
Asthma 8
Osteoperosis 11
Atrial Fibrilation 40
Heart Failure 41
Chronic Obstructive Pulmonary Disease 20
Diabetes 36
Dementia 14
Cancer 14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2014 were hospital care, inpatient care, stress testing and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 40
doctor visit 1491
hospital care 724
inpatient care 692
outpatient care 32
stress testing 40

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 842
Female 727
Ethnicity
Non-Hispanic White 1474
Black 25
Hispanic 41
Asian 14
Other 0
Native American 0
Age
From 65 to 74 389
From 75 to 84 593
85 and over 457
Less than 65 130

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2014

Hypertension 75
High Cholesterol 75
Stroke 10
Ischemic Heart Disease 73
Depression 24
Chronic Kidney Disease 43
Asthma 9
Osteoperosis 11
Atrial Fibrilation 41
Heart Failure 42
Chronic Obstructive Pulmonary Disease 21
Diabetes 37
Dementia 13
Cancer 16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2015 were hospital care, inpatient care, stress testing and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 29
doctor visit 1508
hospital care 655
inpatient care 634
outpatient care 21
stress testing 29

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 1564
Female 1350
Ethnicity
Non-Hispanic White 2722
Black 54
Hispanic 84
Asian 0
Other 32
Native American 0
Age
From 65 to 74 788
From 75 to 84 1046
85 and over 862
Less than 65 218

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2015

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 74
Depression 26
Chronic Kidney Disease 46
Asthma 16
Osteoperosis 10
Atrial Fibrilation 40
Heart Failure 41
Chronic Obstructive Pulmonary Disease 21
Diabetes 36
Dementia 15
Cancer 15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2016 were hospital care, inpatient care, ultrasound (sonogram) and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 14
doctor visit 1731
hospital care 503
inpatient care 492
outpatient care 11
ultrasound (sonogram) 14

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 739
Female 573
Ethnicity
Non-Hispanic White 1229
Black 24
Hispanic 37
Asian 0
Other 0
Native American 0
Age
From 65 to 74 387
From 75 to 84 464
85 and over 380
Less than 65 81

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2016

Hypertension 75
High Cholesterol 75
Stroke 10
Ischemic Heart Disease 75
Depression 21
Chronic Kidney Disease 49
Asthma 20
Osteoperosis 11
Atrial Fibrilation 37
Heart Failure 38
Chronic Obstructive Pulmonary Disease 18
Diabetes 35
Dementia 14
Cancer 13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2017 were hospital care, inpatient care, ultrasound (sonogram) and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 21
doctor visit 1558
hospital care 529
inpatient care 514
outpatient care 15
ultrasound (sonogram) 21

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 670
Female 531
Ethnicity
Non-Hispanic White 1143
Black 15
Hispanic 21
Asian 0
Other 0
Native American 0
Age
From 65 to 74 341
From 75 to 84 431
85 and over 352
Less than 65 77

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2017

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 74
Depression 23
Chronic Kidney Disease 50
Asthma 10
Osteoperosis 10
Atrial Fibrilation 36
Heart Failure 38
Chronic Obstructive Pulmonary Disease 20
Diabetes 33
Dementia 16
Cancer 14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2018 were hospital care, inpatient care, outpatient care and cardiac procedures.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 36
doctor visit 1512
hospital care 674
inpatient care 634
outpatient care 40
stress testing 11
ultrasound (sonogram) 25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 698
Female 579
Ethnicity
Non-Hispanic White 1201
Black 20
Hispanic 28
Asian 0
Other 0
Native American 0
Age
From 65 to 74 371
From 75 to 84 463
85 and over 364
Less than 65 79

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2018

Hypertension 75
High Cholesterol 75
Stroke 10
Ischemic Heart Disease 71
Depression 23
Chronic Kidney Disease 53
Asthma 8
Osteoperosis 9
Atrial Fibrilation 39
Heart Failure 40
Chronic Obstructive Pulmonary Disease 18
Diabetes 34
Dementia 15
Cancer 14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2019 were hospital care, inpatient care, outpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 22
doctor visit 1023
hospital care 823
inpatient care 782
outpatient care 41
ultrasound (sonogram) 22

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 643
Female 531
Ethnicity
Non-Hispanic White 1091
Black 18
Hispanic 30
Asian 13
Other 22
Native American 0
Age
From 65 to 74 356
From 75 to 84 407
85 and over 340
Less than 65 71

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2019

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 74
Depression 25
Chronic Kidney Disease 56
Asthma 9
Osteoperosis 11
Atrial Fibrilation 36
Heart Failure 43
Chronic Obstructive Pulmonary Disease 21
Diabetes 36
Dementia 20
Cancer 15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2020 were hospital care, inpatient care, outpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

cardiac procedures 21
doctor visit 832
hospital care 531
inpatient care 489
outpatient care 42
ultrasound (sonogram) 21

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 592
Female 528
Ethnicity
Non-Hispanic White 1039
Black 0
Hispanic 33
Asian 0
Other 27
Native American 0
Age
From 65 to 74 387
From 75 to 84 388
85 and over 281
Less than 65 64

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2020

Hypertension 75
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 69
Depression 25
Chronic Kidney Disease 51
Asthma 9
Osteoperosis 11
Atrial Fibrilation 34
Heart Failure 37
Chronic Obstructive Pulmonary Disease 16
Diabetes 35
Dementia 18
Cancer 17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

doctor visit 1066
hospital care 104
inpatient care 104

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 558
Female 540
Ethnicity
Non-Hispanic White 1026
Black 0
Hispanic 25
Asian 0
Other 30
Native American 0
Age
From 65 to 74 379
From 75 to 84 412
85 and over 252
Less than 65 55

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2021

Hypertension 75
High Cholesterol 75
Stroke 7
Ischemic Heart Disease 60
Depression 25
Chronic Kidney Disease 44
Asthma 10
Osteoperosis 12
Atrial Fibrilation 30
Heart Failure 30
Chronic Obstructive Pulmonary Disease 14
Diabetes 32
Dementia 17
Cancer 15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

doctor visit 1139
hospital care 45
inpatient care 45

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 488
Female 473
Ethnicity
Non-Hispanic White 898
Black 0
Hispanic 20
Asian 0
Other 30
Native American 0
Age
From 65 to 74 351
From 75 to 84 355
85 and over 217
Less than 65 38

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 14
Ischemic Heart Disease 55
Depression 21
Chronic Kidney Disease 31
Asthma 14
Osteoperosis 17
Atrial Fibrilation 38
Heart Failure 26
Chronic Obstructive Pulmonary Disease 14
Diabetes 30
Dementia 10
Cancer 19

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

doctor visit 927

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 387
Female 311
Ethnicity
Non-Hispanic White 660
Black 0
Hispanic 0
Asian 0
Other 20
Native American 0
Age
From 65 to 74 251
From 75 to 84 270
85 and over 160
Less than 65 17

Conditions of Medicare patients treated by Dr. John P. Slovak, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 53
Depression 17
Chronic Kidney Disease 29
Asthma 14
Osteoperosis 16
Atrial Fibrilation 36
Heart Failure 23
Chronic Obstructive Pulmonary Disease 15
Diabetes 26
Dementia 8
Cancer 19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. John P. Slovak, MD for Medicare patients.

The highest averages for the top procedures that Dr. John P. Slovak, MD treated as a cardiologist in Lancaster, PA were hospital care, inpatient care, stress testing and cardiac procedures.

cardiac procedures 42
doctor visit 1335
hospital care 553
inpatient care 532
outpatient care 28
preventive care 19
stress testing 43
ultrasound (sonogram) 27
vaccines 19

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John P. Slovak, MD.

Gender
Male 664
Female 573
Ethnicity
Black / African American 15
Asian / Pacific Islander 2
Non-Hispanic White 1160
Hispanic 30
Native American / Alaskan Native 0
Other 13
Age
75 to 84 452
85 and over 341
Less than 65 78
65 to 74 365

Average of Total of Conditions of Medicare patients treated by Dr. John P. Slovak, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. John P. Slovak, MD treated were high cholesterol, hypertension, ischemic heart disease and chronic kidney disease.

Hypertension 68
High Cholesterol 68
Stroke 9
Ischemic Heart Disease 62
Depression 21
Chronic Kidney Disease 40
Asthma 10
Osteoporosis 10
Heart Failure 33
Chronic Obstructive Pulmonary Disease 16
Diabetes 30
Atrial Fibrillation 33
Cancer 14
Dementia 13

Education & Training

Dr. John P. Slovak, MD graduated from Drexel University College of Medicine in 1976. He completed residency at Geisinger Community Medical Center. He is certified by the Board certifications: Internal Medicine and has a state license in Pennsylvania.

Medical School: Drexel University College of Medicine (1976)

Residency: Geisinger Community Medical Center (1979)

Board Certification: Board certifications: Internal Medicine (1979)

Licensed In: Pennsylvania

Ratings & Reviews

Dr. John P. Slovak, MD has an exceptional overall rating with an average of 4.88 out of 5 stars based on 937 ratings. We collect ratings and reviews of Dr. John P. Slovak, MD from all over the web to help you find the right in Lancaster, PA. 

4.88
Overall Rating
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General Payments

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

Payments by Company
LIPOSCIENCE, INC. $111 NMR LipoProfile Test
$111
Thoratec Corporation $109 HeartMate II
$109
Medtronic Vascular, Inc. $19
$19
Types of Payments
Food and Beverage $240

Biography

Dr. John Slovak works as a cardiology (heart disease). Clinical interests for Dr. Slovak include myxoma, orthostatic hypotension, and cardiac risk reduction. Patients rated him highly, giving him an average of 5.0 stars (out of 5). He attended MCP Hahnemann School of Medicine and then went on to complete his residency at Geisinger Medical Center. He welcomes new patients at his office inLancaster, PA as reported by Yext.

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