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Home > NC Providers > Thoracic (Chest) Surgeons

Dr. John Mark Williams, MD

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Specializes in: Thoracic Surgery

115 Heart Drive
Greenville, NC 27834

(252) 744-4400

Dr. John Mark Williams, MD is a thoracic surgeon in Greenville, NC specializing in thoracic surgery.

Office Locations

115 Heart Drive
Greenville, NC 27834

(252) 744-4400

(252) 744-3987

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Noteworthy Medicare Patient Procedures Performed by Dr. John Mark Williams, MD in 2023

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

Top 5%

By Affordability:

creatinine test

In 2023, Dr. John Mark Williams, MD had a list price for creatinine test that was lower than the list prices billed to Medicare by 95% of providers in related specialties within North Carolina. 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:

blood tests

lab tests

In 2012, Dr. John Mark Williams, MD had a list price for blood tests, and lab tests that was lower than the list prices billed to Medicare by 75% of providers in related specialties within North Carolina. 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 Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2012 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	58
bypass surgery	39
cardiac procedures	130
diabetes management	16
doctor visit	106
hospital care	62
inpatient care	62
lab tests	469
open surgery	78
preventive care	16
thoracic (chest) surgery procedures	78
thyroid function tests	33

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2013 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	32
bypass surgery	26
cardiac procedures	98
doctor visit	96
hospital care	43
inpatient care	43
lab tests	584
open surgery	52
thoracic (chest) surgery procedures	52
thyroid function tests	42

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	130
Female	76

**Ethnicity**
Non-Hispanic White	148
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	69
85 and over	12
Less than 65	39

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	75
Depression	20
Chronic Kidney Disease	50
Asthma	11
Osteoperosis	0
Atrial Fibrilation	33
Heart Failure	57
Chronic Obstructive Pulmonary Disease	29
Diabetes	54
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2014 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	65
bypass surgery	52
cardiac procedures	140
doctor visit	67
lab tests	532
open surgery	104
thoracic (chest) surgery procedures	104
thyroid function tests	39

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	129
Female	76

**Ethnicity**
Non-Hispanic White	140
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	84
From 75 to 84	68
85 and over	13
Less than 65	40

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	75
Depression	16
Chronic Kidney Disease	51
Asthma	12
Osteoperosis	8
Atrial Fibrilation	32
Heart Failure	57
Chronic Obstructive Pulmonary Disease	30
Diabetes	55
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2015 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	84
bypass surgery	85
cardiac procedures	228
doctor visit	63
implantable cardioverter-defibrillator (ICD) lead extraction	12
lab tests	703
minimally invasive procedures	12
open surgery	170
thoracic (chest) surgery procedures	170
thyroid function tests	39

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	280
Female	186

**Ethnicity**
Non-Hispanic White	318
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	212
From 75 to 84	132
85 and over	30
Less than 65	92

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	75
Depression	31
Chronic Kidney Disease	59
Asthma	23
Osteoperosis	6
Atrial Fibrilation	27
Heart Failure	63
Chronic Obstructive Pulmonary Disease	30
Diabetes	52
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2016 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	108
bypass surgery	94
cardiac procedures	236
doctor visit	25
lab tests	665
open surgery	188
thoracic (chest) surgery procedures	188
thyroid function tests	53

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	165
Female	94

**Ethnicity**
Non-Hispanic White	194
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	71
85 and over	16
Less than 65	45

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	75
Depression	27
Chronic Kidney Disease	59
Asthma	32
Osteoperosis	6
Atrial Fibrilation	33
Heart Failure	63
Chronic Obstructive Pulmonary Disease	29
Diabetes	52
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2017 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	81
bypass surgery	75
cardiac procedures	220
doctor visit	54
lab tests	617
open surgery	150
thoracic (chest) surgery procedures	150
thyroid function tests	33

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	149
Female	77

**Ethnicity**
Non-Hispanic White	162
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	97
From 75 to 84	73
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2017

Hypertension	75
High Cholesterol	67
Stroke	9
Ischemic Heart Disease	75
Depression	26
Chronic Kidney Disease	63
Asthma	12
Osteoperosis	5
Atrial Fibrilation	27
Heart Failure	58
Chronic Obstructive Pulmonary Disease	29
Diabetes	53
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2018 were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	59
bypass surgery	49
cardiac procedures	132
doctor visit	36
lab tests	466
open surgery	98
thoracic (chest) surgery procedures	98
thyroid function tests	22

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	106
Female	52

**Ethnicity**
Non-Hispanic White	115
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	55
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	75
Depression	21
Chronic Kidney Disease	58
Asthma	8
Osteoperosis	0
Atrial Fibrilation	28
Heart Failure	63
Chronic Obstructive Pulmonary Disease	23
Diabetes	52
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2019 were lab tests, thoracic (chest) surgery procedures, open surgery and cardiac procedures.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	45
bypass surgery	66
cardiac procedures	132
doctor visit	13
lab tests	324
open surgery	132
preventive care	11
thoracic (chest) surgery procedures	132
thyroid function tests	23

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	107
Female	38

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	61
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	75
Depression	21
Chronic Kidney Disease	67
Asthma	8
Osteoperosis	0
Atrial Fibrilation	37
Heart Failure	61
Chronic Obstructive Pulmonary Disease	26
Diabetes	54
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	42
Female	26

**Ethnicity**
Non-Hispanic White	49
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	23
From 75 to 84	26
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	75
Depression	29
Chronic Kidney Disease	69
Asthma	0
Osteoperosis	0
Atrial Fibrilation	38
Heart Failure	74
Chronic Obstructive Pulmonary Disease	29
Diabetes	47
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2021 were thoracic (chest) surgery procedures, open surgery, cardiac procedures and lab tests.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

bypass surgery	27
cardiac procedures	54
lab tests	43
open surgery	54
thoracic (chest) surgery procedures	54

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	52
Female	22

**Ethnicity**
Non-Hispanic White	63
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	38
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	75
Depression	22
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	0
Atrial Fibrilation	36
Heart Failure	49
Chronic Obstructive Pulmonary Disease	20
Diabetes	43
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2022 were lab tests, thoracic (chest) surgery procedures, open surgery and cardiac procedures.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

blood draw	18
bypass surgery	19
cardiac procedures	38
doctor visit	81
lab tests	79
open surgery	38
thoracic (chest) surgery procedures	38

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	71
Female	30

**Ethnicity**
Non-Hispanic White	76
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	35
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	71
Depression	20
Chronic Kidney Disease	47
Asthma	0
Osteoperosis	11
Atrial Fibrilation	53
Heart Failure	53
Chronic Obstructive Pulmonary Disease	15
Diabetes	41
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC during 2023 were lab tests.

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

doctor visit	40
lab tests	11

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Male	39
Female	16

**Age**
From 65 to 74	0
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Mark Williams, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	69
Depression	22
Chronic Kidney Disease	44
Asthma	0
Osteoperosis	0
Atrial Fibrilation	47
Heart Failure	53
Chronic Obstructive Pulmonary Disease	0
Diabetes	47
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. John Mark Williams, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Mark Williams, MD treated as a thoracic surgeon in Greenville, NC were lab tests, cardiac procedures, thoracic (chest) surgery procedures and open surgery.

blood draw	61
bypass surgery	53
cardiac procedures	140
diabetes management	16
doctor visit	58
hospital care	52
implantable cardioverter-defibrillator (ICD) lead extraction	12
inpatient care	52
lab tests	408
minimally invasive procedures	12
open surgery	106
preventive care	13
thoracic (chest) surgery procedures	106
thyroid function tests	35

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John Mark Williams, MD.

**Gender**
Female	57
Male	105

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	114
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	50
85 and over	5
Less than 65	18
65 to 74	70

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

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

Hypertension	68
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	67
Depression	21
Chronic Kidney Disease	51
Asthma	8
Osteoporosis	3
Heart Failure	54
Chronic Obstructive Pulmonary Disease	21
Diabetes	45
Atrial Fibrillation	32
Dementia	5
Cancer	8

Education & Training

He has a state license in North Carolina.

Licensed In: North Carolina

Ratings & Reviews

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General Payments

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

**Payments by Company**
Covidien Sales LLC	$114 Procedural Support and Other $114
Medtronic, Inc.	$99 ONYX FRONTIER $99
AstraZeneca Pharmaceuticals LP	$94 BRILINTA $49	FARXIGA $45
St. Jude Medical, Inc.	$65 Structural Heart $65
Edwards Lifesciences Corporation	$32 Pericardial Heart Valves $32
Other	$83 TEG6s HEMOSTASIS SYSTEM $22	Beating Heart Surgery $11	XARELTO $11	GATTEX $11	LifeVest $10	Other $19

**Types of Payments**
Food and Beverage	$455
Education	$32

Biography

Dr. John Williams works as a thoracic surgery. Dr. Williams is affiliated with East Carolina University. He attended medical school at Duke University School of Medicine.