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Dr. John Charles Andrefsky, MD

Specializes in: Vascular Neurology and Sleep Medicine
MCP Hahnemann School of Medicine (1990)
Professional interests include: stroke, sleep disorders, neurological disorders
6115 Powers Boulevard Suite 204
Parma, OH 44129

Dr. John Charles Andrefsky, MD is a vascular neurologist in Parma, OH specializing in vascular neurology and sleep medicine. He graduated from MCP Hahnemann School of Medicine in 1990 and has 36 years of experience. Dr. John Charles Andrefsky, MD is affiliated with University Hospitals.

View Doctor's Full Profile (440) 743-8120

Office Locations

6115 Powers Boulevard Suite 204
Parma, OH 44129
(440) 743-8120
(440) 743-8121
open_in_new

Some issues Dr. John Charles Andrefsky, MD can help you with:

Stroke

A stroke is a medical emergency that occurs when a blood vessel supplying oxygen and nutrients to the brain is ruptured or blocked. The brain cannot function without a steady supply of oxygen and nutrients, so when the blood supply to the brain is interrupted, even for a brief moment, brain cells begin to die. When a sufficient number of brain cells die, the brain itself can no longer function, meaning that strokes are very dangerous. Strokes can result in impaired movement, speech, cognitive ability, the impairment of important physical functions, and even death.

Anyone can have a stroke, regardless of age and health. Strokes are known to happen at random. However, certain conditions and behaviors can increase one's risk of stroke over time.

Risk factors for stroke include:

  • Heart disease
  • Older age
  • Smoking
  • Diabetes
  • High blood pressure
  • High blood cholesterol and lipids

There are two main types of stroke: ischemic stroke and hemorrhagic stroke. Ischemic stroke occurs more commonly and is when a blood vessel in the brain becomes blocked. Blockages are caused by blood clots and built-up plaque (deposits of fat and cholesterol), which leads to atherosclerosis, a condition where the blood vessels narrow and harden. The resultant restricted blood flow may lead to an ischemic stroke by blocking essential oxygen to the brain, causing the heart to exert more effort to pump blood.

Hemorrhagic stroke occurs when a blood vessel in or around the brain ruptures. The burst vessel leaks blood into surrounding brain tissue, causing irreparable brain damage.

Hemorrhagic strokes are less common and may occur from head injuries, brain aneurysms, brain tumors, and bleeding disorders, amongst other conditions.

Both ischemic and hemorrhagic strokes require immediate medical treatment. Medical intervention can prevent severe and life-threatening brain damage. Signs of stroke include:

-Disorientation or confusion

-Difficulty speaking

-Difficulty walking

-Impaired vision

-Weakness in the face, legs, or arms

-Severe headaches

When someone suspected of having a stroke reaches the hospital, the patient will usually receive a CT or other scan that provides an image of the brain. The scan results can reveal clotted or leaking blood in the brain. Physical exams, neurological exams, and blood tests may also be used to check for blood clotting and sugar. Treatment begins generally immediately if a stroke is detected.

Medical treatment for ischemic strokes includes a thrombolytic medicine which breaks up and disperses blood clots. This medicine can greatly improve stroke recovery and long-term health. However, the thrombolytic medicine must be administered as soon as possible to achieve these results. Other treatments for ischemic strokes are blood thinners and thrombectomy, a surgical procedure to remove a blood clot in the brain. Thrombectomy is performed by inserting a catheter (thin needle) into the artery to reach the blood clot and mechanically remove it. With the clot removed, normal blood flow to the brain resumes. Thrombectomy is typically performed at most six hours after a patient shows signs of a stroke.

Hemorrhagic strokes are treated with blood-saving medication and surgery. For a hemorrhagic stroke caused by the rupture of an aneurysm (blood vessel bulges), surgery to stem the bleeding aneurysm and vessel may be used. One surgical technique is stent-assisted coiling, which adds a stent (small wire-meshed tube) into the blood vessel to block the leaking opening of the aneurysm. A non-surgical procedure is endovascular coiling, where a catheter (thin, hollow needle) places a platinum wire coil at the spot of the aneurysm. The coil blocks bleeding and prevents the aneurysm from continuing to leak blood. These procedures are usually combined with blood-thickening medications. Blood transfusions may be administered if substantial blood loss has occurred.

Since stroke patients may have lost some essential functions while the blood flow to their brains was obstructed, both ischemic stroke and hemorrhage stroke patients may receive post-stroke rehabilitation to rebuild their physical and mental abilities. Some restorative treatments include occupational, physical, and speech therapy. Patients may also receive care from neurologists, who can assist patients in recovering certain brain functions and cognitive abilities, and rehabilitation psychologists, who may help patients with their emotional, behavioral, and cognitive recovery. Some stroke patients require lengthy rehabilitation and may never fully regain function, while others may recover more quickly. While the fastest recovery improvements are usually seen in the first three or four months, stroke rehabilitation can last for years.

If someone begins to show signs of stroke, contact emergency services and call 9-1-1 immediately since blood flow must be restored as soon as possible to help avoid significant brain damage. If an ambulance takes the person to the hospital, paramedics can initiate stroke treatment as soon as the patient enters the ambulance, allowing for more prompt medical intervention and care.

Noteworthy Medicare Patient Procedures Performed by Dr. John Charles Andrefsky, MD in 2023

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

Top 5%

By Volume:

home cardiorespiratory sleep study
in-lab polysomnography
sleep study
sleep study with CPAP

In 2023, Dr. John Charles Andrefsky, MD performed more home cardiorespiratory (type 3) sleep study, in-lab polysomnography (overnight sleep study), sleep study, and sleep study with CPAP procedures for Medicare patients than 95% of providers in related specialties within Ohio.

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. John Charles Andrefsky, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within Ohio.

Top 25%

By Affordability:

hospital care
inpatient care
inpatient hospital care

In 2012, Dr. John Charles Andrefsky, MD had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Ohio. 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. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2012 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 13
doctor visit 599
electroencephalography (EEG) 122
hospital care 844
inpatient care 844
sleep study 28
ultrasound (sonogram) 197
vascular procedures 197

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2013 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

doctor visit 724
electroencephalography (EEG) 118
hospital care 712
inpatient care 712
ultrasound (sonogram) 149
vascular procedures 149

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 413
Female 494
Ethnicity
Non-Hispanic White 848
Black 44
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 267
From 75 to 84 270
85 and over 166
Less than 65 204

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2013

Hypertension 75
High Cholesterol 73
Stroke 39
Ischemic Heart Disease 50
Depression 46
Chronic Kidney Disease 35
Asthma 13
Osteoperosis 13
Atrial Fibrilation 20
Heart Failure 34
Chronic Obstructive Pulmonary Disease 27
Diabetes 40
Dementia 31
Cancer 12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2014 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

doctor visit 532
electroencephalography (EEG) 58
hospital care 497
inpatient care 497
ultrasound (sonogram) 100
vascular procedures 100

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 322
Female 382
Ethnicity
Non-Hispanic White 659
Black 33
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 231
From 75 to 84 206
85 and over 123
Less than 65 144

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2014

Hypertension 75
High Cholesterol 68
Stroke 35
Ischemic Heart Disease 49
Depression 41
Chronic Kidney Disease 33
Asthma 9
Osteoperosis 12
Atrial Fibrilation 19
Heart Failure 32
Chronic Obstructive Pulmonary Disease 26
Diabetes 37
Dementia 27
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2015 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 16
doctor visit 490
electroencephalography (EEG) 87
hospital care 361
inpatient care 361
sleep study 31
ultrasound (sonogram) 162
vascular procedures 162

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 446
Female 552
Ethnicity
Non-Hispanic White 944
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 314
From 75 to 84 288
85 and over 242
Less than 65 154

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2015

Hypertension 75
High Cholesterol 64
Stroke 40
Ischemic Heart Disease 50
Depression 36
Chronic Kidney Disease 33
Asthma 15
Osteoperosis 7
Atrial Fibrilation 23
Heart Failure 29
Chronic Obstructive Pulmonary Disease 20
Diabetes 36
Dementia 25
Cancer 14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2016 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 13
doctor visit 639
electroencephalography (EEG) 122
hospital care 293
inpatient care 247
outpatient care 46
sleep study 34
ultrasound (sonogram) 178
vascular procedures 178

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 273
Female 349
Ethnicity
Non-Hispanic White 581
Black 17
Hispanic 11
Asian 0
Other 0
Native American 0
Age
From 65 to 74 232
From 75 to 84 204
85 and over 125
Less than 65 61

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2016

Hypertension 75
High Cholesterol 68
Stroke 36
Ischemic Heart Disease 50
Depression 37
Chronic Kidney Disease 37
Asthma 22
Osteoperosis 8
Atrial Fibrilation 19
Heart Failure 28
Chronic Obstructive Pulmonary Disease 19
Diabetes 36
Dementia 28
Cancer 12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2017 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 38
doctor visit 701
electroencephalography (EEG) 115
hospital care 316
inpatient care 275
outpatient care 41
sleep study 65
ultrasound (sonogram) 139
vascular procedures 139

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 286
Female 364
Ethnicity
Non-Hispanic White 616
Black 19
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 231
From 75 to 84 219
85 and over 133
Less than 65 67

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2017

Hypertension 75
High Cholesterol 58
Stroke 34
Ischemic Heart Disease 46
Depression 36
Chronic Kidney Disease 38
Asthma 7
Osteoperosis 7
Atrial Fibrilation 20
Heart Failure 26
Chronic Obstructive Pulmonary Disease 17
Diabetes 34
Dementia 28
Cancer 11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2018 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 36
doctor visit 518
electroencephalography (EEG) 100
hospital care 335
inpatient care 302
outpatient care 33
sleep study 84
ultrasound (sonogram) 171
vascular procedures 171

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 325
Female 410
Ethnicity
Non-Hispanic White 687
Black 15
Hispanic 0
Asian 0
Other 16
Native American 0
Age
From 65 to 74 261
From 75 to 84 237
85 and over 141
Less than 65 96

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2018

Hypertension 75
High Cholesterol 69
Stroke 33
Ischemic Heart Disease 46
Depression 38
Chronic Kidney Disease 38
Asthma 8
Osteoperosis 8
Atrial Fibrilation 18
Heart Failure 25
Chronic Obstructive Pulmonary Disease 21
Diabetes 36
Dementia 26
Cancer 11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2019 were hospital care, inpatient care, sleep study and ultrasound (sonogram).

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 58
doctor visit 454
electroencephalography (EEG) 57
hospital care 327
inpatient care 260
outpatient care 67
sleep study 214
ultrasound (sonogram) 124
vascular procedures 124

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 345
Female 379
Ethnicity
Non-Hispanic White 676
Black 15
Hispanic 0
Asian 0
Other 20
Native American 0
Age
From 65 to 74 290
From 75 to 84 242
85 and over 97
Less than 65 95

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2019

Hypertension 75
High Cholesterol 71
Stroke 29
Ischemic Heart Disease 45
Depression 37
Chronic Kidney Disease 35
Asthma 6
Osteoperosis 5
Atrial Fibrilation 20
Heart Failure 27
Chronic Obstructive Pulmonary Disease 19
Diabetes 35
Dementia 25
Cancer 11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2020 were hospital care, inpatient care, sleep study and electroencephalography (EEG).

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 20
doctor visit 294
electroencephalography (EEG) 96
hospital care 263
inpatient care 249
outpatient care 14
sleep study 125
ultrasound (sonogram) 78
vascular procedures 78

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 284
Female 340
Ethnicity
Non-Hispanic White 579
Black 0
Hispanic 0
Asian 0
Other 21
Native American 0
Age
From 65 to 74 275
From 75 to 84 206
85 and over 80
Less than 65 63

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2020

Hypertension 75
High Cholesterol 73
Stroke 34
Ischemic Heart Disease 54
Depression 38
Chronic Kidney Disease 43
Asthma 5
Osteoperosis 6
Atrial Fibrilation 21
Heart Failure 30
Chronic Obstructive Pulmonary Disease 20
Diabetes 38
Dementia 25
Cancer 10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2021 were hospital care, inpatient care, sleep study and electroencephalography (EEG).

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 35
doctor visit 358
electroencephalography (EEG) 86
hospital care 215
inpatient care 183
outpatient care 32
sleep study 102
ultrasound (sonogram) 11
vascular procedures 11

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 265
Female 257
Ethnicity
Non-Hispanic White 481
Black 0
Hispanic 0
Asian 0
Other 18
Native American 0
Age
From 65 to 74 228
From 75 to 84 169
85 and over 72
Less than 65 53

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2021

Hypertension 75
High Cholesterol 73
Stroke 30
Ischemic Heart Disease 51
Depression 38
Chronic Kidney Disease 42
Asthma 7
Osteoperosis 7
Atrial Fibrilation 20
Heart Failure 28
Chronic Obstructive Pulmonary Disease 18
Diabetes 36
Dementia 28
Cancer 10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH during 2022 were hospital care, inpatient care, sleep study and electroencephalography (EEG).

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

airway management 16
doctor visit 329
electroencephalography (EEG) 88
hospital care 188
inpatient care 151
outpatient care 37
sleep study 101

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 245
Female 274
Ethnicity
Non-Hispanic White 475
Black 0
Hispanic 0
Asian 0
Other 23
Native American 0
Age
From 65 to 74 195
From 75 to 84 185
85 and over 83
Less than 65 56

Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 41
Ischemic Heart Disease 39
Depression 31
Chronic Kidney Disease 29
Asthma 9
Osteoperosis 11
Atrial Fibrilation 25
Heart Failure 25
Chronic Obstructive Pulmonary Disease 20
Diabetes 37
Dementia 19
Cancer 15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Charles Andrefsky, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Charles Andrefsky, MD treated as a vascular neurologist in Parma, OH were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

airway management 27
doctor visit 512
electroencephalography (EEG) 95
hospital care 395
inpatient care 371
outpatient care 38
sleep study 87
ultrasound (sonogram) 130
vascular procedures 130

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Charles Andrefsky, MD.

Gender
Male 291
Female 345
Ethnicity
Black / African American 13
Asian / Pacific Islander 0
Non-Hispanic White 595
Native American / Alaskan Native 0
Hispanic 1
Other 8
Age
75 to 84 202
85 and over 114
Less than 65 90
65 to 74 229

Average of Total of Conditions of Medicare patients treated by Dr. John Charles Andrefsky, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John Charles Andrefsky, MD treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 68
High Cholesterol 62
Stroke 31
Ischemic Heart Disease 43
Depression 34
Chronic Kidney Disease 33
Asthma 9
Osteoporosis 7
Heart Failure 25
Chronic Obstructive Pulmonary Disease 18
Diabetes 33
Atrial Fibrillation 18
Dementia 23
Cancer 10

Education & Training

Dr. John Charles Andrefsky, MD graduated from MCP Hahnemann School of Medicine in 1990. He completed residency at | Neurology Neurology - Pennsylvania Hospital (Uphs). He is certified by the Vascular Neurology - American Board of Psychiatry and Neurology and has a state license in Ohio.

Medical School: MCP Hahnemann School of Medicine (1990)

Residency: | Neurology Neurology - Pennsylvania Hospital (Uphs) (1994)

Board Certification: Vascular Neurology - American Board of Psychiatry and Neurology

Licensed In: Ohio

Affiliations & Hospitals

Dr. John Charles Andrefsky, MD is associated with these hospitals and organizations:

University Hospitals

Ratings & Reviews

Dr. John Charles Andrefsky, MD has an exceptional overall rating with an average of 4.84 out of 5 stars based on 116 ratings. We collect ratings and reviews of Dr. John Charles Andrefsky, MD from all over the web to help you find the right in Parma, OH. 

4.84
Overall Rating
Leave a Review

General Payments

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

Payments by Company
AbbVie Inc. $50,537 UBRELVY
$37,792 		QULIPTA
$12,707 		Duopa
$38
Harmony Biosciences LLC $34,035 Wakix
$34,035
Allergan, Inc. $29,955 UBRELVY
$29,955
Teva Pharmaceuticals USA, Inc. $17,869 COPAXONE
$16,581 		AUSTEDO
$206 		NUVIGIL
$117 		Unclassified
$111 		AJOVY
$110 		Other
$744
Axsome Therapeutics, Inc. $11,439 SUNOSI
$11,439
Other $27,703 Aggrenox
$4,341 		Cardiac Monitoring Suite
$4,027 		Pradaxa
$1,510 		APTIOM
$1,062 		Inspire Upper Airway Stimulation System
$1,031 		Other
$15,732
Types of Payments
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $114,396
Food and Beverage $24,912
Honoraria $15,000
Consulting Fee $12,732
Travel and Lodging $3,402
Other $1,097

Biography

Dr. John Andrefsky practices vascular neurology and sleep medicine in Parma, OH. In Dr. Andrefsky's practice, he is particularly interested in sleep disorders, stroke, and neurological disorders. He is professionally affiliated with the University Hospitals. He is a graduate of MCP Hahnemann School of Medicine. Patients gave him an average rating of 5.0 stars (out of 5).

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