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Dr. John Willis Marshall, MD

(No ratings)

Specializes in: Emergency Medicine

2333 Mccallie Avenue
Chattanooga, TN 37404

(423) 493-1493

Dr. John Willis Marshall, MD is an emergency medicine doctor in Chattanooga, TN specializing in emergency medicine.

Office Locations

2333 Mccallie Avenue
Chattanooga, TN 37404

(423) 493-1493

(423) 698-6061

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941 Spring Creek Road
Chattanooga, TN 37412

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Noteworthy Medicare Patient Procedures Performed by Dr. John Willis Marshall, MD in 2024

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

Top 25%

By Affordability:

emergency care

emergency room care

In 2012, Dr. John Willis Marshall, MD had a list price for emergency care, and emergency room (ER) care that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Tennessee. 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 Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2012 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	1009

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2013 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	1015

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	412
Female	568

**Ethnicity**
Non-Hispanic White	901
Black	46
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	270
From 75 to 84	246
85 and over	118
Less than 65	346

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2013

Hypertension	75
High Cholesterol	65
Stroke	12
Ischemic Heart Disease	50
Depression	35
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	9
Atrial Fibrilation	18
Heart Failure	38
Chronic Obstructive Pulmonary Disease	40
Diabetes	48
Dementia	22
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2014 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	1022

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	432
Female	579

**Ethnicity**
Non-Hispanic White	918
Black	57
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	243
85 and over	134
Less than 65	336

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	49
Depression	33
Chronic Kidney Disease	34
Asthma	12
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	39
Chronic Obstructive Pulmonary Disease	39
Diabetes	47
Dementia	25
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2015 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	898

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	848
Female	1036

**Ethnicity**
Non-Hispanic White	1674
Black	160
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	524
From 75 to 84	506
85 and over	284
Less than 65	570

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	13
Ischemic Heart Disease	51
Depression	35
Chronic Kidney Disease	41
Asthma	25
Osteoperosis	6
Atrial Fibrilation	21
Heart Failure	40
Chronic Obstructive Pulmonary Disease	39
Diabetes	44
Dementia	22
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2016 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	496

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	196
Female	316

**Ethnicity**
Non-Hispanic White	446
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	139
From 75 to 84	109
85 and over	58
Less than 65	206

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2016

Hypertension	75
High Cholesterol	52
Stroke	8
Ischemic Heart Disease	44
Depression	42
Chronic Kidney Disease	38
Asthma	45
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	33
Chronic Obstructive Pulmonary Disease	41
Diabetes	43
Dementia	21
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2017 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	484

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	213
Female	281

**Ethnicity**
Non-Hispanic White	405
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	149
From 75 to 84	118
85 and over	66
Less than 65	161

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2017

Hypertension	75
High Cholesterol	52
Stroke	10
Ischemic Heart Disease	47
Depression	40
Chronic Kidney Disease	48
Asthma	9
Osteoperosis	6
Atrial Fibrilation	17
Heart Failure	37
Chronic Obstructive Pulmonary Disease	34
Diabetes	41
Dementia	24
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2018 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	500

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	247
Female	283

**Ethnicity**
Non-Hispanic White	503
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	164
From 75 to 84	156
85 and over	97
Less than 65	113

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2018

Hypertension	75
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	54
Depression	39
Chronic Kidney Disease	51
Asthma	10
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	38
Chronic Obstructive Pulmonary Disease	38
Diabetes	46
Dementia	31
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2019 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	451

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	204
Female	269

**Ethnicity**
Non-Hispanic White	453
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	139
85 and over	66
Less than 65	120

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2019

Hypertension	75
High Cholesterol	62
Stroke	9
Ischemic Heart Disease	52
Depression	40
Chronic Kidney Disease	51
Asthma	8
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	36
Diabetes	40
Dementia	23
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2020 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	228

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	90
Female	135

**Ethnicity**
Non-Hispanic White	211
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	57
85 and over	25
Less than 65	64

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2020

Hypertension	75
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	49
Depression	38
Chronic Kidney Disease	47
Asthma	10
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	34
Chronic Obstructive Pulmonary Disease	32
Diabetes	49
Dementia	21
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2021 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	169

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	61
Female	121

**Ethnicity**
Non-Hispanic White	154
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	61
From 75 to 84	46
85 and over	31
Less than 65	44

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2021

Hypertension	75
High Cholesterol	56
Stroke	8
Ischemic Heart Disease	44
Depression	35
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	26
Diabetes	35
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2022 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	218

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	95
Female	148

**Ethnicity**
Non-Hispanic White	197
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	57
85 and over	48
Less than 65	51

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	49
Depression	39
Chronic Kidney Disease	44
Asthma	16
Osteoperosis	13
Atrial Fibrilation	33
Heart Failure	44
Chronic Obstructive Pulmonary Disease	42
Diabetes	45
Dementia	22
Cancer	12

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2023 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	231

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	77
Female	142

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	79
85 and over	36
Less than 65	30

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2023

Hypertension	75
High Cholesterol	72
Stroke	10
Ischemic Heart Disease	30
Depression	37
Chronic Kidney Disease	30
Asthma	18
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	21
Chronic Obstructive Pulmonary Disease	24
Diabetes	37
Dementia	16
Cancer	15

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN during 2024 were emergency care.

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

emergency care	174

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	74
Female	98

**Ethnicity**
Non-Hispanic White	155
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	49
85 and over	37
Less than 65	27

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2024

Hypertension	75
High Cholesterol	74
Stroke	15
Ischemic Heart Disease	41
Depression	40
Chronic Kidney Disease	31
Asthma	17
Osteoperosis	19
Atrial Fibrilation	26
Heart Failure	27
Chronic Obstructive Pulmonary Disease	25
Diabetes	37
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John Willis Marshall, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Willis Marshall, MD treated as an emergency medicine doctor in Chattanooga, TN were emergency care.

emergency care	530

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John Willis Marshall, MD.

**Gender**
Male	226
Female	305

**Ethnicity**
Black / African American	20
Asian / Pacific Islander	0
Non-Hispanic White	476
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	138
85 and over	76
Less than 65	159
65 to 74	157

Average of Total of Conditions of Medicare patients treated by Dr. John Willis Marshall, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	58
Stroke	9
Ischemic Heart Disease	43
Depression	34
Chronic Kidney Disease	37
Asthma	14
Osteoporosis	9
Heart Failure	31
Chronic Obstructive Pulmonary Disease	32
Diabetes	39
Atrial Fibrillation	18
Dementia	19
Cancer	10

Education & Training

He has a state license in Georgia.

Licensed In: Georgia

Ratings & Reviews

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General Payments

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

**Payments by Company**
ShockWave Medical, Inc	$391 SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER $391
Inari Medical, Inc.	$129 CT THROMBECTOMY SYSTEM KIT $129
Vapotherm Inc	$129 Precision Flow $129
Genentech USA, Inc.	$40 Tnkase $24	Activase $15
Actavis Pharma Inc	$30 DALVANCE $18	TEFLARO $11
Other	$41 CAMZYOS $16	TEKTURNA $14	BRILINTA $11

**Types of Payments**
Food and Beverage	$759

Research Payments

Dr. John Willis Marshall, MD has received 1 research payments totaling $7,839.

Biography

Dr. John Marshall works as an emergency medicine specialist in Chattanooga, TN. Dr. Marshall obtained a license to practice in Georgia.

Select Year:

Dr. John Willis Marshall, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John Willis Marshall, MD in 2024

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Willis Marshall, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. John Willis Marshall, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Research Payments

Biography

Emergency Physicians in Nearby Locations

Other Providers in Chattanooga, TN