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Dr. John David Knight, MD

Accepting New Patients
Specializes in: Internal Medicine (Adult Medicine) and General Pediatrics
University of Texas Medical School at Houston (1992)
Professional interests include: back pain, pain, fever, and more.
100 MEDICAL CENTER PARKWAY
HUNTSVILLE, TX 77340

Dr. John David Knight, MD is an internist in HUNTSVILLE, TX specializing in internal medicine (adult medicine) and general pediatrics. He graduated from University of Texas Medical School at Houston in 1992 and has 33 years of experience. Dr. John David Knight, MD is affiliated with Kelsey-Seybold Clinic and KELSEY-SEYBOLD MEDICAL GROUP, PLLC.

View Doctor's Full Profile (936) 295-8000

Office Locations

100 MEDICAL CENTER PARKWAY
HUNTSVILLE, TX 77340
open_in_new

Some issues Dr. John David Knight, MD can help you with:

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.

Urinary Tract Infection (UTI)

A urinary tract infection, or UTI, happens when bacteria enter the body through the opening where urine is normally released. The bacteria infect the lining of the urethra and bladder, turning them red and inflamed. This causes pain in the abdomen or pelvic area, a burning sensation during urination, a sense of urgency about going to the bathroom, frequent urination, and urine that smells bad and looks cloudy, or even contains traces of blood. If the urinary tract infection is severe, it may travel all the way to the kidneys, a more serious kind of UTI called pyelonephritis. Patients with this kidney infection might have blood in their urine, feel back pain, and develop a fever.

Urinary tract infections are extremely common: 12% of all men and 40-50% of all women will have a urinary tract infection during their lifetime. They are more common in women because women have shorter urethras, so bacteria have a shorter distance to travel from the outside of the body to the bladder and cause an infection. Some people also have urethras that are an unusual shape or have an obstruction in the urethra that makes getting a UTI more likely. Also, certain chronic illnesses like diabetes weaken the immune system, so any bacteria in the body are more likely to cause an infection.

A urinary tract infection can be diagnosed very quickly by a doctor. A sample of urine can be examined under a microscope for the presence of bacteria or white blood cells. There are also diagnostic strips that can be used to test a urine sample without the need for a microscope. Once a diagnosis is made, treatment is a course of oral antibiotics, and most patients feel better within just a few days. There are some things that patients can do themselves to help reduce the risk of getting a urinary tract infection in the future. Stay well hydrated, wipe from front to back after going to the bathroom, wear breathable cotton undergarments, and don't hold it in when patients feel the urge to go.

Noteworthy Medicare Patient Procedures Performed by Dr. John David Knight, MD in 2023

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

Top 10%

By Affordability:

lab tests

In 2023, Dr. John David Knight, MD had a list price for lab tests that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Texas. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Affordability:

urine tests

In 2013, Dr. John David Knight, MD had a list price for urine tests that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Texas. 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

2013 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2013 were lab tests, preventive care, vaccines and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 48
doctor visit 632
lab tests 227
preventive care 114
thoracic (chest) imaging 41
vaccines 66
X-rays 41

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 81
Female 140
Ethnicity
Non-Hispanic White 205
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 112
From 75 to 84 73
85 and over 19
Less than 65 17

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2013

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2013 were hypertension, ischemic heart disease, high cholesterol and diabetes.

Hypertension 67
High Cholesterol 37
Stroke 8
Ischemic Heart Disease 38
Depression 18
Chronic Kidney Disease 14
Asthma 7
Osteoperosis 5
Atrial Fibrilation 11
Heart Failure 19
Chronic Obstructive Pulmonary Disease 19
Diabetes 32
Dementia 9
Cancer 11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2014 were lab tests, preventive care, vaccines and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 58
doctor visit 593
lab tests 171
preventive care 104
thoracic (chest) imaging 48
vaccines 64
X-rays 48

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 85
Female 135
Ethnicity
Non-Hispanic White 206
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 98
From 75 to 84 80
85 and over 18
Less than 65 24

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2014

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2014 were hypertension, ischemic heart disease, diabetes and high cholesterol.

Hypertension 55
High Cholesterol 31
Stroke 5
Ischemic Heart Disease 35
Depression 13
Chronic Kidney Disease 11
Asthma 6
Osteoperosis 0
Atrial Fibrilation 9
Heart Failure 16
Chronic Obstructive Pulmonary Disease 18
Diabetes 31
Dementia 8
Cancer 9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2015 were preventive care, lab tests, vaccines and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 60
doctor visit 583
lab tests 140
preventive care 158
thoracic (chest) imaging 47
vaccines 118
X-rays 47

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 170
Female 262
Ethnicity
Non-Hispanic White 408
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 192
From 75 to 84 162
85 and over 38
Less than 65 40

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2015

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2015 were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension 56
High Cholesterol 36
Stroke 0
Ischemic Heart Disease 36
Depression 15
Chronic Kidney Disease 18
Asthma 13
Osteoperosis 0
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 17
Diabetes 34
Dementia 7
Cancer 9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2016 were preventive care, lab tests, vaccines and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 44
doctor visit 457
lab tests 78
preventive care 105
thoracic (chest) imaging 34
vaccines 74
X-rays 34

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 82
Female 118
Ethnicity
Non-Hispanic White 187
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 88
From 75 to 84 73
85 and over 21
Less than 65 18

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2016

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2016 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 61
High Cholesterol 41
Stroke 0
Ischemic Heart Disease 36
Depression 17
Chronic Kidney Disease 29
Asthma 18
Osteoperosis 0
Atrial Fibrilation 12
Heart Failure 18
Chronic Obstructive Pulmonary Disease 14
Diabetes 36
Dementia 9
Cancer 10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2017 were preventive care, lab tests, vaccines and X-rays.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 39
doctor visit 491
lab tests 145
preventive care 164
thoracic (chest) imaging 45
vaccines 124
X-rays 45

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 90
Female 120
Ethnicity
Non-Hispanic White 196
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 97
From 75 to 84 74
85 and over 22
Less than 65 17

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2017

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2017 were hypertension, diabetes, high cholesterol and ischemic heart disease.

Hypertension 60
High Cholesterol 36
Stroke 8
Ischemic Heart Disease 36
Depression 19
Chronic Kidney Disease 32
Asthma 10
Osteoperosis 0
Atrial Fibrilation 11
Heart Failure 16
Chronic Obstructive Pulmonary Disease 15
Diabetes 36
Dementia 9
Cancer 5

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2018 were preventive care, vaccines, lab tests and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 12
doctor visit 445
lab tests 92
preventive care 150
vaccines 106

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 80
Female 120
Ethnicity
Non-Hispanic White 185
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 93
From 75 to 84 72
85 and over 20
Less than 65 15

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2018

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2018 were hypertension, ischemic heart disease, diabetes and high cholesterol.

Hypertension 63
High Cholesterol 37
Stroke 6
Ischemic Heart Disease 38
Depression 17
Chronic Kidney Disease 33
Asthma 10
Osteoperosis 0
Atrial Fibrilation 9
Heart Failure 17
Chronic Obstructive Pulmonary Disease 17
Diabetes 37
Dementia 8
Cancer 8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2019 were preventive care, vaccines, lab tests and diabetes management.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

diabetes management 11
doctor visit 457
lab tests 42
preventive care 66
vaccines 55

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 79
Female 111
Ethnicity
Non-Hispanic White 176
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 90
From 75 to 84 66
85 and over 23
Less than 65 11

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2019

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2019 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 58
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 31
Depression 18
Chronic Kidney Disease 31
Asthma 6
Osteoperosis 0
Atrial Fibrilation 10
Heart Failure 15
Chronic Obstructive Pulmonary Disease 16
Diabetes 37
Dementia 7
Cancer 6

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2020 were preventive care and vaccines.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

doctor visit 400
preventive care 56
vaccines 56

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 70
Female 112
Age
From 65 to 74 93
From 75 to 84 63
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2020

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2020 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 65
High Cholesterol 41
Stroke 0
Ischemic Heart Disease 29
Depression 18
Chronic Kidney Disease 29
Asthma 9
Osteoperosis 0
Atrial Fibrilation 10
Heart Failure 14
Chronic Obstructive Pulmonary Disease 13
Diabetes 34
Dementia 7
Cancer 0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2021 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

doctor visit 498
lab tests 12
preventive care 32
vaccines 32

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 73
Female 120
Ethnicity
Non-Hispanic White 177
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 94
From 75 to 84 64
85 and over 23
Less than 65 12

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2021

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2021 were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension 64
High Cholesterol 38
Stroke 0
Ischemic Heart Disease 28
Depression 15
Chronic Kidney Disease 34
Asthma 7
Osteoperosis 0
Atrial Fibrilation 9
Heart Failure 16
Chronic Obstructive Pulmonary Disease 12
Diabetes 34
Dementia 8
Cancer 0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2022 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

doctor visit 507
lab tests 21
preventive care 35
vaccines 35

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 68
Female 108
Ethnicity
Non-Hispanic White 161
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 82
From 75 to 84 63
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2022

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2022 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 75
High Cholesterol 61
Stroke 10
Ischemic Heart Disease 25
Depression 18
Chronic Kidney Disease 17
Asthma 10
Osteoperosis 0
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 18
Diabetes 34
Dementia 7
Cancer 10

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX during 2023 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

doctor visit 395
lab tests 14
preventive care 16
vaccines 16

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 63
Female 93
Ethnicity
Non-Hispanic White 143
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 66
From 75 to 84 56
85 and over 23
Less than 65 11

Conditions of Medicare patients treated by Dr. John David Knight, MD in 2023

The most common conditions of Medicare patients that Dr. John David Knight, MD treated during 2023 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 75
High Cholesterol 62
Stroke 9
Ischemic Heart Disease 23
Depression 16
Chronic Kidney Disease 22
Asthma 9
Osteoperosis 0
Atrial Fibrilation 14
Heart Failure 14
Chronic Obstructive Pulmonary Disease 15
Diabetes 33
Dementia 8
Cancer 11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. John David Knight, MD for Medicare patients.

The highest averages for the top procedures that Dr. John David Knight, MD treated as an internist in HUNTSVILLE, TX were lab tests, preventive care, vaccines and X-rays.

diabetes management 38
doctor visit 496
lab tests 94
preventive care 90
thoracic (chest) imaging 43
vaccines 67
X-rays 43

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. John David Knight, MD.

Gender
Male 85
Female 130
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 185
Native American / Alaskan Native 0
Hispanic 0
Other 0
Age
75 to 84 76
85 and over 18
Less than 65 15
65 to 74 100

Average of Total of Conditions of Medicare patients treated by Dr. John David Knight, MD From 2013 - 2023

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

Hypertension 63
High Cholesterol 41
Stroke 4
Ischemic Heart Disease 32
Depression 16
Chronic Kidney Disease 24
Asthma 9
Osteoporosis 0
Heart Failure 15
Chronic Obstructive Pulmonary Disease 15
Diabetes 34
Atrial Fibrillation 11
Cancer 7
Dementia 7

Education & Training

Dr. John David Knight, MD graduated from University of Texas Medical School at Houston in 1992. He completed residency at St. Joseph Medical Center, Houston. He has a state license in Texas.

Medical School: University of Texas Medical School at Houston (1992)

Residency: St. Joseph Medical Center, Houston

Licensed In: Texas

Affiliations & Hospitals

Dr. John David Knight, MD is associated with these hospitals and organizations:

Kelsey-Seybold Clinic
KELSEY-SEYBOLD MEDICAL GROUP, PLLC

Ratings & Reviews

Dr. John David Knight, MD has an exceptional overall rating with an average of 4.92 out of 5 stars based on 46 ratings. We collect ratings and reviews of Dr. John David Knight, MD from all over the web to help you find the right in HUNTSVILLE, TX. 

4.92
Overall Rating
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General Payments

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

Payments by Company
GlaxoSmithKline, LLC. $313 BREO
$148 		SHINGRIX
$72 		ANORO
$48 		ARNUITY
$28 		INCRUSE
$17
Medtronic Vascular, Inc. $143 Implantable Cardioverter Defibrillators - ICDs
$61 		Resolute
$60 		Pacemakers
$12 		Cardiac Diagnostics and Monitoring
$11
SANOFI-AVENTIS U.S. LLC $142 TOUJEO
$115 		APIDRA
$15 		SOLIQUA 100/33
$12
Philips Electronics North America Corporation $142 iXR Undivided
$82 		Zoom Lamps
$34 		EPIQ 7C
$26
Allergan Inc. $134 DALVANCE
$116 		LINZESS
$11 		BYSTOLIC
$3 		NAMENDA XR
$3
Other $930 VYVANSE
$111 		DALVANCE
$77 		NovoLog
$68 		EUCRISA
$49 		AMRIX
$47 		Other
$577
Types of Payments
Food and Beverage $1,793
Education $11

Biography

Dr. John Knight specializes in general practice and general pediatrics. On average, patients gave him a rating of 5.0 stars (out of 5). Clinical interests for Dr. Knight include sinusitis (sinus inflammation), back pain, and ear infection. Before performing his residency at St. Joseph Medical Center, Houston, Dr. Knight attended the University of Texas Medical School at Houston for medical school. He is professionally affiliated with Kelsey-Seybold Clinic. According to Kelsey-Seybold Clinic, new patients are welcome to contact his office in Huntsville, TX.

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