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Dr. Gyanendra Kumar, MD

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Specializes in: Vascular Neurology
SMS Medical College, Jaipur (2001)
Professional interests include: carotid ultrasound, cerebrovascular disease, intensive care, and more.
13400 E. Shea Boulevard
Scottsdale, AZ 85259

Dr. Gyanendra Kumar, MD is a vascular neurologist in Scottsdale, AZ specializing in vascular neurology. He graduated from SMS Medical College, Jaipur in 2001 and has 25 years of experience. Dr. Gyanendra Kumar, MD is affiliated with Mayo Clinic and MAYO CLINIC ARIZONA.

View Doctor's Full Profile (480) 301-8000

Office Locations

13400 E. Shea Boulevard
Scottsdale, AZ 85259
(480) 301-8000
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Phoenix, AZ
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Some issues Dr. Gyanendra Kumar, MD can help you with:

Carotid Ultrasound

A carotid ultrasound is an exam that takes pictures of the carotid arteries, or the main arteries in the neck. These important arteries supply blood to the brain as well as to the face and scalp. Sometimes they can become narrowed or clogged with a fatty buildup called plaque, a condition called carotid artery disease.

Ultrasound is a non-invasive imaging technique that uses sound waves to take pictures of the inside of the body. It is painless and does not use radiation. During a carotid ultrasound, a gel that helps transmit the sound waves is applied to the skin. Then a wand is moved over the skin, sending sound waves through the neck and producing a picture on the computer screen.

A carotid ultrasound is usually performed to diagnose carotid artery disease. The ultrasound can look for narrow sections of artery, plaque buildup, or blood clots that may decrease blood flow to the brain. Plaque and blood clots can potentially break off into the bloodstream and get stuck within the brain, causing a stroke. A specific kind of ultrasound called Doppler ultrasound can detect motion and measure how well blood is flowing. Carotid ultrasound can also be used to evaluate the effectiveness of treatment for carotid artery disease, such as a stent.

Carotid ultrasounds are easy and painless, require no recovery, and provide important information about the health of the neck arteries.

Ischemic Stroke

Ischemic stroke is the more common form of stroke and occurs when a blood vessel in the brain becomes blocked. Ischemic strokes are caused by blood clots or by built-up plaque (deposits of fat and cholesterol) in the arteries and are dangerous medical events that require immediate treatment.

Ischemic strokes are severe because it restricts blood flow and an inadequate blood supply damages the brain, which cannot function without a steady supply of oxygen and nutrients. Ischemic strokes may alter appearance by leaving one side of the face paralyzed, also affecting speech and communication. Additionally, ischemic strokes can result in impaired movement, cognitive ability, and can impede important physical functions like walking.

The main cause of ischemic stroke is from plaque (deposits of fat and cholesterol) accumulating in blood vessels. Plaque causes atherosclerosis, a condition where the blood vessels narrow and harden with cholesterol, fat, and calcium, causing damage to the endothelium (inner layer of cells in the arteries), which in turn restricts blood flow. At some point, a large blockage of plaque or bits of broken up plaque may result in an ischemic stroke.

People who are older are more likely to have ischemic strokes due to accumulated plaque. Additionally, certain repeated behaviors are associated with an increased risk of ischemic stroke. These behaviors include:

  • Smoking
  • High fat diet
  • Lack of exercise
  • High salt diet
  • Alcohol abuse

Conditions such as heart disease, diabetes, high blood pressure, and high levels of cholesterol and lipids are also known to be correlated with ischemic strokes. If possible, people are advised to avoid modifiable risk factors (factors one can change themselves) such as smoking and lack of exercise by keeping an active lifestyle and a healthy diet.

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. Hospital treatment generally begins 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 using a catheter (thin needle) to 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.

Ischemic stroke patients who have lost some essential functions while the blood flow to their brain was obstructed 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, ischemic stroke rehabilitation can last for years.

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

In The News 

“Dr. Gyanendra Kumar, a Mayo Clinic neurologist not involved in the study, says it's long been known that respiratory infections increase the risk of stroke in the days following infection.”—"Flu vaccine may reduce risk of stroke, study suggests", Chicago Tribune, October 2022

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2013 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

hospital care 248
inpatient care 234
ultrasound (sonogram) 121
vascular procedures 121

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 71
Female 68
Ethnicity
Non-Hispanic White 89
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 43
From 75 to 84 34
85 and over 23
Less than 65 39

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2013

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2013 were hypertension, stroke, high cholesterol and ischemic heart disease.

Hypertension 75
High Cholesterol 73
Stroke 75
Ischemic Heart Disease 53
Depression 30
Chronic Kidney Disease 40
Asthma 0
Osteoperosis 0
Atrial Fibrilation 27
Heart Failure 42
Chronic Obstructive Pulmonary Disease 19
Diabetes 43
Dementia 23
Cancer 8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2014 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 42
hospital care 474
inpatient care 442
outpatient care 32
ultrasound (sonogram) 398
vascular procedures 398

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 191
Female 168
Ethnicity
Non-Hispanic White 254
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 147
From 75 to 84 101
85 and over 41
Less than 65 70

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2014

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2014 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 75
Ischemic Heart Disease 58
Depression 38
Chronic Kidney Disease 48
Asthma 6
Osteoperosis 5
Atrial Fibrilation 26
Heart Failure 37
Chronic Obstructive Pulmonary Disease 25
Diabetes 44
Dementia 23
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2015 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 55
hospital care 607
inpatient care 607
ultrasound (sonogram) 284
vascular procedures 284

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 314
Female 430
Ethnicity
Non-Hispanic White 512
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 242
From 75 to 84 196
85 and over 126
Less than 65 180

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2015

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2015 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 75
Ischemic Heart Disease 60
Depression 36
Chronic Kidney Disease 51
Asthma 15
Osteoperosis 8
Atrial Fibrilation 28
Heart Failure 37
Chronic Obstructive Pulmonary Disease 22
Diabetes 48
Dementia 26
Cancer 13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2016 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 143
hospital care 222
inpatient care 222
ultrasound (sonogram) 93
vascular procedures 93

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 137
Female 148
Ethnicity
Non-Hispanic White 239
Black 34
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 98
From 75 to 84 106
85 and over 46
Less than 65 35

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2016

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2016 were hypertension, high cholesterol, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 72
Stroke 72
Ischemic Heart Disease 49
Depression 32
Chronic Kidney Disease 44
Asthma 19
Osteoperosis 11
Atrial Fibrilation 21
Heart Failure 26
Chronic Obstructive Pulmonary Disease 16
Diabetes 33
Dementia 22
Cancer 12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2017 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 68
hospital care 109
inpatient care 97
outpatient care 12
ultrasound (sonogram) 29
vascular procedures 29

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 88
Female 90
Ethnicity
Non-Hispanic White 163
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 75
From 75 to 84 53
85 and over 39
Less than 65 11

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2017

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2017 were hypertension, stroke, high cholesterol and ischemic heart disease.

Hypertension 75
High Cholesterol 72
Stroke 74
Ischemic Heart Disease 51
Depression 29
Chronic Kidney Disease 47
Asthma 0
Osteoperosis 8
Atrial Fibrilation 25
Heart Failure 31
Chronic Obstructive Pulmonary Disease 19
Diabetes 29
Dementia 18
Cancer 19

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2018 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 117
hospital care 213
inpatient care 163
outpatient care 50
ultrasound (sonogram) 56
vascular procedures 56

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 146
Female 119
Ethnicity
Non-Hispanic White 239
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 102
From 75 to 84 103
85 and over 48
Less than 65 12

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2018

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2018 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 71
Ischemic Heart Disease 55
Depression 33
Chronic Kidney Disease 41
Asthma 8
Osteoperosis 11
Atrial Fibrilation 28
Heart Failure 29
Chronic Obstructive Pulmonary Disease 15
Diabetes 32
Dementia 24
Cancer 14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2019 were hospital care, inpatient care, outpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 42
hospital care 270
inpatient care 196
outpatient care 74
ultrasound (sonogram) 33
vascular procedures 33

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 140
Female 112
Ethnicity
Non-Hispanic White 217
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 92
From 75 to 84 101
85 and over 43
Less than 65 16

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2019

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2019 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 73
Ischemic Heart Disease 59
Depression 30
Chronic Kidney Disease 46
Asthma 7
Osteoperosis 11
Atrial Fibrilation 24
Heart Failure 29
Chronic Obstructive Pulmonary Disease 10
Diabetes 35
Dementia 27
Cancer 21

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 53
hospital care 188
inpatient care 154
outpatient care 34

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 136
Female 105
Ethnicity
Non-Hispanic White 211
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 80
From 75 to 84 110
85 and over 37
Less than 65 14

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2020

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2020 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 73
Ischemic Heart Disease 54
Depression 31
Chronic Kidney Disease 49
Asthma 9
Osteoperosis 14
Atrial Fibrilation 27
Heart Failure 25
Chronic Obstructive Pulmonary Disease 14
Diabetes 35
Dementia 23
Cancer 21

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2021 were hospital care, inpatient care, outpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 145
hospital care 183
inpatient care 140
outpatient care 43
ultrasound (sonogram) 14
vascular procedures 14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 165
Female 135
Ethnicity
Non-Hispanic White 273
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 115
From 75 to 84 126
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2021

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2021 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 69
Ischemic Heart Disease 55
Depression 30
Chronic Kidney Disease 44
Asthma 9
Osteoperosis 14
Atrial Fibrilation 26
Heart Failure 27
Chronic Obstructive Pulmonary Disease 14
Diabetes 26
Dementia 17
Cancer 14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2022 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 162
hospital care 225
inpatient care 191
outpatient care 34
ultrasound (sonogram) 41
vascular procedures 41

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 176
Female 163
Ethnicity
Non-Hispanic White 303
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 117
From 75 to 84 141
85 and over 69
Less than 65 12

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2022

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2022 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 75
Ischemic Heart Disease 43
Depression 27
Chronic Kidney Disease 42
Asthma 11
Osteoperosis 21
Atrial Fibrilation 31
Heart Failure 26
Chronic Obstructive Pulmonary Disease 17
Diabetes 30
Dementia 17
Cancer 20

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

doctor visit 176
hospital care 175
inpatient care 175

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 169
Female 133
Ethnicity
Non-Hispanic White 269
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 88
From 75 to 84 143
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD in 2023

The most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated during 2023 were high cholesterol, hypertension, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 75
Ischemic Heart Disease 42
Depression 27
Chronic Kidney Disease 36
Asthma 16
Osteoperosis 18
Atrial Fibrilation 35
Heart Failure 25
Chronic Obstructive Pulmonary Disease 19
Diabetes 30
Dementia 14
Cancer 22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Gyanendra Kumar, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gyanendra Kumar, MD treated as a vascular neurologist in Scottsdale, AZ were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

doctor visit 100
hospital care 264
inpatient care 238
outpatient care 39
ultrasound (sonogram) 118
vascular procedures 118

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Gyanendra Kumar, MD.

Gender
Male 157
Female 151
Ethnicity
Black / African American 3
Asian / Pacific Islander 0
Non-Hispanic White 251
Native American / Alaskan Native 0
Hispanic 0
Other 0
Age
85 and over 42
75 to 84 110
Less than 65 35
65 to 74 109

Average of Total of Conditions of Medicare patients treated by Dr. Gyanendra Kumar, MD From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Gyanendra Kumar, MD treated were hypertension, high cholesterol, stroke and ischemic heart disease.

Hypertension 75
High Cholesterol 74
Stroke 73
Ischemic Heart Disease 52
Depression 31
Chronic Kidney Disease 44
Asthma 9
Osteoporosis 11
Heart Failure 30
Chronic Obstructive Pulmonary Disease 17
Diabetes 35
Atrial Fibrillation 27
Dementia 21
Cancer 16

Education & Training

Dr. Gyanendra Kumar, MD graduated from SMS Medical College, Jaipur in 2001. He completed residency at King George Medical University Affiliated Hospitals. He is certified by the Neurology American Board of Psychiatry and Neurology and has a state license in Alabama.

Medical School: SMS Medical College, Jaipur (2001)

Residency: King George Medical University Affiliated Hospitals (2004)

Board Certification: Neurology American Board of Psychiatry and Neurology (2011)

Licensed In: Alabama

Affiliations & Hospitals

Dr. Gyanendra Kumar, MD is associated with these hospitals and organizations:

Mayo Clinic
MAYO CLINIC ARIZONA

Ratings & Reviews

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General Payments

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

Payments by Company
Chiesi USA, Inc. $125 CARDENE
$125
Genentech, Inc. $106 Tnkase
$106
Boehringer Ingelheim Pharmaceuticals, Inc. $85
$85
Silk Road Medical, Inc. $80 ENROUTE 0.014 Guidewire
$80
Types of Payments
Food and Beverage $396

Biography

Dr. Gyanendra Kumar is a specialist in vascular neurology. He works in Scottsdale, AZ and Phoenix, AZ. Dr. Kumar's areas of expertise include transient ischemic attack (TIA), intensive care, and carotid ultrasound. He is professionally affiliated with Mayo Clinic. His education and training includes medical school at SMS Medical College, Jaipur and residency at the University of Missouri Health System and a hospital affiliated with King George Medical University.

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