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Dr. John Douglas Clark, MD

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Specializes in: Adult Pulmonology, Sleep Medicine and Adult Critical Care

University of Tennessee Health Science Center College of Medicine

2030 N. Church Place
Spartanburg, SC 29303

(864) 582-6858

Dr. John Douglas Clark, MD is a pulmonologist in Spartanburg, SC specializing in adult pulmonology, sleep medicine and adult critical care. He graduated from University of Tennessee Health Science Center College of Medicine. Dr. John Douglas Clark, MD is affiliated with Spartanburg Regional Healthcare System.

Office Locations

2030 N. Church Place
Spartanburg, SC 29303

(864) 582-6858

(864) 585-0999

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Noteworthy Medicare Patient Procedures Performed by Dr. John Douglas Clark, MD in 2023

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

Top 5%

By Volume:

bronchoscopy with therapeutic aspiration

complete blood count

inpatient hospital care

By Affordability:

blood count tests

bronchoscopy with therapeutic aspiration

complete blood count

in-lab polysomnography

in-lab sleep study

polysomnography

sleep study with CPAP

therapeutic bronchoscopy

In 2023, among providers in related specialties within South Carolina, Dr. John Douglas Clark, MD performed more bronchoscopy with therapeutic aspiration, complete blood count (CBC), and inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of them and he also had a list price for blood count tests, bronchoscopy with therapeutic aspiration, complete blood count (CBC), in-lab polysomnography (overnight sleep study), in-lab sleep study, polysomnography (PSG), sleep study with CPAP, and therapeutic bronchoscopy that was lower than the list prices billed to Medicare by 95% of them. 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 10%

By Affordability:

airway management

CPAP treatment

In 2023, Dr. John Douglas Clark, MD had a list price for airway management, and CPAP treatment that was lower than the list prices billed to Medicare by 90% of providers in related specialties within South 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 Volume:

bronchoscopy

By Affordability:

blood draw

blood draw for lab tests

blood tests

bronchoalveolar lavage

bronchoscopy

diagnostic sleep study

hospital care

inpatient care

inpatient hospital care

lung volume test

phlebotomy for lab tests

pulmonary function test

pulmonary testing

venipuncture

In 2012, among providers in related specialties within South Carolina, Dr. John Douglas Clark, MD performed more bronchoscopy procedures for Medicare patients than 75% of them and he also had a list price for blood draw, blood draw for lab tests, blood tests, bronchoalveolar lavage (BAL), bronchoscopy, diagnostic (regular) sleep study, hospital care, inpatient care, inpatient hospital care (for patient admitted to hospital), lung volume test, phlebotomy for lab tests, pulmonary function test (PFT), pulmonary testing, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 75% of them. 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 Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2012 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	62
aspiration	64
blood draw	158
bronchoscopy	141
diagnostic procedures	26
doctor visit	1411
hospital care	2476
inpatient care	2476
lab tests	99
minimally invasive procedures	26
nursing home care	90
preventive care	61
pulmonary testing	271
sinus imaging	67
sleep study	126
thoracic (chest) imaging	368
vaccines	61
X-rays	435

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2013 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	61
aspiration	92
blood draw	154
bronchoscopy	143
diagnostic procedures	19
doctor visit	1259
hospital care	2078
inpatient care	2078
lab tests	140
minimally invasive procedures	19
nursing home care	41
preventive care	72
pulmonary testing	191
sinus imaging	44
sleep study	137
thoracic (chest) imaging	269
vaccines	72
X-rays	313

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	597
Female	588

**Ethnicity**
Non-Hispanic White	997
Black	161
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	469
From 75 to 84	357
85 and over	137
Less than 65	222

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2013

Hypertension	75
High Cholesterol	62
Stroke	11
Ischemic Heart Disease	50
Depression	33
Chronic Kidney Disease	37
Asthma	21
Osteoperosis	10
Atrial Fibrilation	21
Heart Failure	44
Chronic Obstructive Pulmonary Disease	51
Diabetes	42
Dementia	17
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2014 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	70
aspiration	81
blood draw	160
bronchoscopy	122
diagnostic procedures	18
doctor visit	1339
hospital care	2289
inpatient care	2289
lab tests	164
minimally invasive procedures	18
nursing home care	41
pleural drainage	12
preventive care	61
pulmonary testing	246
sinus imaging	47
sleep study	137
thoracic (chest) imaging	326
vaccines	61
X-rays	373

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	638
Female	646

**Ethnicity**
Non-Hispanic White	1085
Black	173
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	536
From 75 to 84	386
85 and over	137
Less than 65	225

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	49
Depression	32
Chronic Kidney Disease	41
Asthma	22
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	45
Chronic Obstructive Pulmonary Disease	52
Diabetes	41
Dementia	17
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2015 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	58
aspiration	45
blood draw	107
bronchoscopy	70
doctor visit	1168
hospital care	1889
inpatient care	1889
lab tests	46
nursing home care	33
preventive care	56
pulmonary testing	191
sinus imaging	39
sleep study	108
thoracic (chest) imaging	313
vaccines	56
X-rays	352

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	1046
Female	978

**Ethnicity**
Non-Hispanic White	1710
Black	268
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	848
From 75 to 84	610
85 and over	232
Less than 65	334

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2015

Hypertension	75
High Cholesterol	67
Stroke	11
Ischemic Heart Disease	48
Depression	29
Chronic Kidney Disease	42
Asthma	40
Osteoperosis	10
Atrial Fibrilation	21
Heart Failure	46
Chronic Obstructive Pulmonary Disease	53
Diabetes	47
Dementia	17
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2016 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	57
aspiration	49
blood draw	103
bronchoscopy	87
diagnostic procedures	13
doctor visit	1143
hospital care	1559
inpatient care	1559
lab tests	83
minimally invasive procedures	13
nursing home care	43
preventive care	40
pulmonary testing	164
sinus imaging	12
sleep study	111
thoracic (chest) imaging	174
vaccines	40
X-rays	186

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	520
Female	503

**Ethnicity**
Non-Hispanic White	879
Black	127
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	425
From 75 to 84	328
85 and over	108
Less than 65	162

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2016

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	46
Depression	31
Chronic Kidney Disease	43
Asthma	58
Osteoperosis	9
Atrial Fibrilation	21
Heart Failure	43
Chronic Obstructive Pulmonary Disease	53
Diabetes	45
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2017 were inpatient care, hospital care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	68
aspiration	56
blood draw	136
bronchoscopy	77
doctor visit	1293
hospital care	1588
inpatient care	1588
lab tests	82
nursing home care	47
preventive care	46
pulmonary testing	225
sinus imaging	44
sleep study	134
thoracic (chest) imaging	271
vaccines	46
X-rays	315

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	531
Female	555

**Ethnicity**
Non-Hispanic White	911
Black	152
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	441
From 75 to 84	360
85 and over	118
Less than 65	167

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	45
Depression	30
Chronic Kidney Disease	44
Asthma	18
Osteoperosis	10
Atrial Fibrilation	22
Heart Failure	39
Chronic Obstructive Pulmonary Disease	49
Diabetes	44
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2018 were inpatient care, hospital care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	48
aspiration	70
blood draw	122
bronchoscopy	134
diagnostic procedures	33
doctor visit	1365
hospital care	1258
inpatient care	1258
lab tests	89
minimally invasive procedures	33
minor procedures	13
preventive care	40
pulmonary testing	349
sinus imaging	28
sleep study	112
vaccines	40
X-rays	28

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	526
Female	517

**Ethnicity**
Non-Hispanic White	896
Black	121
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	458
From 75 to 84	337
85 and over	112
Less than 65	136

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	44
Depression	28
Chronic Kidney Disease	42
Asthma	17
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	40
Chronic Obstructive Pulmonary Disease	51
Diabetes	44
Dementia	13
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2019 were inpatient care, hospital care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	78
aspiration	47
blood draw	108
bronchoscopy	76
diagnostic procedures	11
doctor visit	1255
hospital care	1007
inpatient care	1007
lab tests	81
minimally invasive procedures	11
preventive care	27
pulmonary testing	256
sinus imaging	26
sleep study	143
vaccines	27
X-rays	26

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	510
Female	465

**Ethnicity**
Non-Hispanic White	846
Black	102
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	431
From 75 to 84	352
85 and over	87
Less than 65	105

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	45
Depression	27
Chronic Kidney Disease	42
Asthma	15
Osteoperosis	10
Atrial Fibrilation	22
Heart Failure	38
Chronic Obstructive Pulmonary Disease	46
Diabetes	43
Dementia	12
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2020 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	26
aspiration	14
blood draw	45
bronchoscopy	31
doctor visit	890
hospital care	707
inpatient care	707
pulmonary testing	113
sleep study	48

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	371
Female	333

**Ethnicity**
Non-Hispanic White	613
Black	72
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	266
85 and over	74
Less than 65	66

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2020

Hypertension	75
High Cholesterol	69
Stroke	6
Ischemic Heart Disease	44
Depression	23
Chronic Kidney Disease	44
Asthma	15
Osteoperosis	11
Atrial Fibrilation	22
Heart Failure	38
Chronic Obstructive Pulmonary Disease	48
Diabetes	41
Dementia	14
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2021 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	35
aspiration	13
blood draw	33
bronchoscopy	13
doctor visit	789
hospital care	726
inpatient care	726
pulmonary testing	132
sleep study	75

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	379
Female	327

**Ethnicity**
Non-Hispanic White	622
Black	62
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	270
85 and over	72
Less than 65	75

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2021

Hypertension	75
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	43
Depression	24
Chronic Kidney Disease	44
Asthma	13
Osteoperosis	11
Atrial Fibrilation	22
Heart Failure	36
Chronic Obstructive Pulmonary Disease	42
Diabetes	42
Dementia	14
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC during 2022 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

airway management	37
aspiration	25
blood draw	56
bronchoscopy	25
doctor visit	844
hospital care	822
inpatient care	822
lab tests	30
pulmonary testing	150
sleep study	62

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	370
Female	307

**Ethnicity**
Non-Hispanic White	589
Black	66
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	256
85 and over	78
Less than 65	54

Conditions of Medicare patients treated by Dr. John Douglas Clark, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	36
Asthma	20
Osteoperosis	16
Atrial Fibrilation	36
Heart Failure	32
Chronic Obstructive Pulmonary Disease	50
Diabetes	44
Dementia	7
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Douglas Clark, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Douglas Clark, MD treated as a pulmonologist in Spartanburg, SC were inpatient care, hospital care, thoracic (chest) imaging and X-rays.

airway management	54
aspiration	50
blood draw	107
bronchoscopy	83
diagnostic procedures	20
doctor visit	1159
hospital care	1490
inpatient care	1490
lab tests	90
minimally invasive procedures	20
minor procedures	13
nursing home care	49
pleural drainage	12
preventive care	50
pulmonary testing	208
sinus imaging	38
sleep study	108
thoracic (chest) imaging	286
vaccines	50
X-rays	253

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Douglas Clark, MD.

**Gender**
Male	498
Female	474

**Ethnicity**
Black / African American	118
Asian / Pacific Islander	0
Non-Hispanic White	831
Native American / Alaskan Native	0
Hispanic	1
Other	2

**Age**
75 to 84	320
85 and over	105
Less than 65	140
65 to 74	407

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

The highest averages of the most common conditions of Medicare patients that Dr. John Douglas Clark, MD treated were hypertension, high cholesterol, chronic obstructive pulmonary disease and ischemic heart disease.

Hypertension	68
High Cholesterol	60
Stroke	8
Ischemic Heart Disease	41
Depression	25
Chronic Kidney Disease	37
Asthma	21
Osteoporosis	9
Heart Failure	36
Chronic Obstructive Pulmonary Disease	45
Diabetes	39
Atrial Fibrillation	21
Dementia	13
Cancer	14

Education & Training

Dr. John Douglas Clark, MD graduated from University of Tennessee Health Science Center College of Medicine. He completed residency at East Tennessee State University (ETSU) Affiliated Hospitals. He is certified by the Licensure : American Board of Internal Medicine Board Certification : Internal Medicine Sleep Medicine Pulmonary Disease Critical Care Medicine and has a state license in South Carolina.

Medical School: University of Tennessee Health Science Center College of Medicine

Residency: East Tennessee State University (ETSU) Affiliated Hospitals

Board Certification: Licensure : American Board of Internal Medicine Board Certification : Internal Medicine Sleep Medicine Pulmonary Disease Critical Care Medicine

Licensed In: South Carolina

Affiliations & Hospitals

Dr. John Douglas Clark, MD is associated with these hospitals and organizations:

Spartanburg Regional Healthcare System

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General Payments

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

**Payments by Company**
GlaxoSmithKline, LLC.	$3,436 TRELEGY ELLIPTA $1,425	NUCALA $573	BREO $431	ANORO $402	ANORO ELLIPTA $269	Other $336
AstraZeneca Pharmaceuticals LP	$2,550 SYMBICORT $926	FASENRA $452	TEZSPIRE $306	BREZTRI $252	AIRSUPRA $223	Other $392
Boehringer Ingelheim Pharmaceuticals, Inc.	$2,425 OFEV $1,348	SPIRIVA RESPIMAT $341	STIOLTO RESPIMAT $296	STIOLTO $94	COMBIVENT RESPIMAT $67	Other $280
Actelion Pharmaceuticals US, Inc.	$1,366 OPSUMIT $506	OPSUMIT MACITENTAN $481	UPTRAVI $267	VENTAVIS ILOPROST $99	VELETRI EPOPROSTENOL $15
Genentech USA, Inc.	$1,066 Esbriet $693	XOLAIR $240	$133
Other	$9,064 Spin $755	DUPIXENT $712	Prolastin-C Liquid $583	SMARTVEST $531	Perforomist $522	Other $5,961

**Types of Payments**
Food and Beverage	$19,045
Travel and Lodging	$729
Education	$114
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$20

Biography

Dr. John Clark practices adult critical care, sleep medicine, and adult pulmonology in Spartanburg, SC. Dr. Clark attended the University of Tennessee Health Science Center College of Medicine and then went on to complete his residency at a hospital affiliated with East Tennessee State University (ETSU). He is professionally affiliated with Spartanburg Regional Healthcare System.