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Dr. David A. Marks, MD

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

University of Texas Health Science Center at San Antonio, School of Medicine

Professional interests include: chronic obstructive pulmonary disease (COPD), sleep disorders, pulmonary function test (PFT), and more.

115 Gallery Circle Suite 102
San Antonio, TX 78258

(210) 494-4220

Dr. David A. Marks, MD is a pulmonologist in San Antonio, TX specializing in adult pulmonology, sleep medicine and adult critical care. He graduated from University of Texas Health Science Center at San Antonio, School of Medicine. Dr. David A. Marks, MD is affiliated with Methodist Health System, CHRISTUS Health, Pulmonary & Sleep Institute, PA and Methodist Hospital Stone Oak.

Office Locations

115 Gallery Circle Suite 102
San Antonio, TX 78258

(210) 494-4220

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Some issues Dr. David A. Marks, MD can help you with:

Asthma

Asthma is a chronic lung disease where the tissue and airways of the lungs become extremely sensitive to certain substances. When these substances are breathed in, the lungs become inflamed. The muscles around the airways tighten and squeeze the lungs, and passages within the lungs swell and tighten. The airways themselves produce mucus, which further clogs the tightened, swollen airways. A person having an asthma attack finds it very difficult to breathe, and a severe attack can even be fatal.

Asthma affects people of all ages, but people with asthma are most often diagnosed as children. Symptoms can include wheezing, a tight feeling in the chest, shortness of breath, and coughing. Some people have mild symptoms all the time, and some people have no symptoms at all, but everyone with asthma is susceptible to occasional severe attacks or flare-ups of symptoms when they are exposed to triggers. Triggers vary widely but can include:

Allergens (dust mites, pet fur, mold, pollen, grass)
Irritants (smoke, pollution, dust, chemicals)
Viral infections
Physical activity, especially outdoors
Certain medications or chemicals in foods (aspirin, sulfites)

Treatment for most asthma patients involves three steps. Patients learn what their asthma triggers are and avoid them. They take a daily control medication, usually an inhaled corticosteroid, to reduce inflammation in the lungs. Also, they have rescue medication with them at all times to take in case of a severe attack. These quick-acting inhaled medications relax the muscles around the airways and allow the lungs to open up for air.

There is no cure for asthma, but with treatment it should not interfere with daily life and activities.

Noteworthy Medicare Patient Procedures Performed by Dr. David A. Marks, MD in 2024

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

Top 5%

By Volume:

pulmonary function test

urinalysis

In 2024, Dr. David A. Marks, MD performed more pulmonary function test (PFT), and urinalysis procedures for Medicare patients than 95% of providers in related specialties within Texas.

Top 10%

By Volume:

blood draw

In 2024, Dr. David A. Marks, MD performed more blood draw procedures for Medicare patients than 90% of providers in related specialties within Texas.

Top 25%

By Volume:

phlebotomy for lab tests

In 2012, Dr. David A. Marks, MD performed more phlebotomy for lab tests procedures for Medicare patients than 75% of providers in related specialties within Texas.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2012 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	107
breathing treatment	61
bronchoscopy	41
cardiac procedures	12
catheterization	12
diagnostic procedures	23
doctor visit	1566
hospital care	979
inpatient care	979
minimally invasive procedures	23
pulmonary testing	363
sleep study	182
tracheal (windpipe) procedures	15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2013 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	96
bronchoscopy	37
doctor visit	1848
hospital care	966
inpatient care	966
minimally invasive procedures	14
pulmonary testing	474
sleep study	158
tracheal (windpipe) procedures	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	442
Female	595

**Ethnicity**
Non-Hispanic White	813
Black	38
Hispanic	164
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	479
From 75 to 84	293
85 and over	118
Less than 65	147

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	7
Ischemic Heart Disease	53
Depression	26
Chronic Kidney Disease	39
Asthma	23
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	33
Chronic Obstructive Pulmonary Disease	44
Diabetes	42
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2014 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	59
bronchoscopy	36
doctor visit	1929
hospital care	903
inpatient care	903
minimally invasive procedures	12
pulmonary testing	548
sleep study	92
tracheal (windpipe) procedures	11

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	481
Female	579

**Ethnicity**
Non-Hispanic White	854
Black	36
Hispanic	141
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	510
From 75 to 84	303
85 and over	113
Less than 65	134

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2014

Hypertension	75
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	51
Depression	25
Chronic Kidney Disease	38
Asthma	20
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	29
Chronic Obstructive Pulmonary Disease	43
Diabetes	37
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2015 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	31
bronchoscopy	59
diagnostic procedures	18
doctor visit	1933
hospital care	958
inpatient care	958
minimally invasive procedures	33
pulmonary testing	558
sleep study	59

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	1014
Female	1246

**Ethnicity**
Non-Hispanic White	1820
Black	84
Hispanic	326
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	1022
From 75 to 84	698
85 and over	296
Less than 65	244

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2015

Hypertension	75
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	52
Depression	27
Chronic Kidney Disease	40
Asthma	33
Osteoperosis	9
Atrial Fibrilation	21
Heart Failure	30
Chronic Obstructive Pulmonary Disease	41
Diabetes	38
Dementia	15
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2016 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	61
bronchoscopy	59
diagnostic procedures	17
doctor visit	1660
hospital care	614
inpatient care	614
minimally invasive procedures	34
pulmonary testing	550
sleep study	121

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	442
Female	584

**Ethnicity**
Non-Hispanic White	840
Black	37
Hispanic	126
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	475
From 75 to 84	320
85 and over	139
Less than 65	92

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2016

Hypertension	75
High Cholesterol	71
Stroke	6
Ischemic Heart Disease	52
Depression	28
Chronic Kidney Disease	45
Asthma	53
Osteoperosis	9
Atrial Fibrilation	18
Heart Failure	30
Chronic Obstructive Pulmonary Disease	44
Diabetes	39
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2017 were pulmonary testing, sleep study, bronchoscopy and airway management.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	51
bronchoscopy	65
diagnostic procedures	17
doctor visit	1669
hospital care	49
inpatient care	49
minimally invasive procedures	32
pulmonary testing	586
sleep study	106

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	373
Female	508

**Ethnicity**
Non-Hispanic White	722
Black	23
Hispanic	105
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	448
From 75 to 84	279
85 and over	98
Less than 65	56

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2017

Hypertension	75
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	50
Depression	22
Chronic Kidney Disease	37
Asthma	25
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	25
Chronic Obstructive Pulmonary Disease	43
Diabetes	33
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2018 were pulmonary testing, sleep study, bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	27
bronchoscopy	74
diagnostic procedures	26
doctor visit	1689
minimally invasive procedures	48
pulmonary testing	719
sleep study	209

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	401
Female	533

**Ethnicity**
Non-Hispanic White	768
Black	27
Hispanic	104
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	504
From 75 to 84	287
85 and over	91
Less than 65	52

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2018

Hypertension	75
High Cholesterol	73
Stroke	4
Ischemic Heart Disease	50
Depression	23
Chronic Kidney Disease	35
Asthma	25
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	22
Chronic Obstructive Pulmonary Disease	41
Diabetes	33
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2019 were pulmonary testing, sleep study, bronchoscopy and airway management.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	46
breathing treatment	15
bronchoscopy	61
diagnostic procedures	21
doctor visit	2409
minimally invasive procedures	40
pulmonary testing	979
sleep study	356

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	478
Female	635

**Ethnicity**
Non-Hispanic White	913
Black	32
Hispanic	129
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	591
From 75 to 84	347
85 and over	112
Less than 65	63

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2019

Hypertension	75
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	48
Depression	24
Chronic Kidney Disease	37
Asthma	24
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	40
Diabetes	34
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2020 were pulmonary testing, sleep study, hospital care and inpatient care.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	22
doctor visit	1034
hospital care	88
inpatient care	75
outpatient care	13
pulmonary testing	828
sleep study	223

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	398
Female	531

**Ethnicity**
Non-Hispanic White	750
Black	33
Hispanic	114
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	479
From 75 to 84	294
85 and over	96
Less than 65	60

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2020

Hypertension	75
High Cholesterol	72
Stroke	4
Ischemic Heart Disease	51
Depression	23
Chronic Kidney Disease	42
Asthma	25
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	40
Diabetes	35
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2021 were pulmonary testing, inpatient care, hospital care and sleep study.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	36
blood draw	52
bronchoscopy	18
catheterization	18
chronic care	20
diabetes management	39
doctor visit	1210
hospital care	271
inpatient care	271
lab tests	39
preventive care	85
pulmonary testing	846
sleep study	204
tracheal (windpipe) procedures	13
vaccines	52

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	512
Female	640

**Ethnicity**
Non-Hispanic White	865
Black	49
Hispanic	201
Asian	16
Other	21
Native American	0

**Age**
From 65 to 74	490
From 75 to 84	396
85 and over	165
Less than 65	101

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2021

Hypertension	75
High Cholesterol	74
Stroke	8
Ischemic Heart Disease	53
Depression	30
Chronic Kidney Disease	50
Asthma	20
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	33
Chronic Obstructive Pulmonary Disease	39
Diabetes	42
Dementia	25
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2022 were pulmonary testing, lab tests, diabetes management and diagnostic procedures.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

airway management	14
breathing treatment	19
diabetes management	323
diagnostic procedures	97
doctor visit	2852
hospital care	65
inpatient care	65
lab tests	697
preventive care	81
pulmonary testing	740
sleep study	14

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	488
Female	645

**Ethnicity**
Non-Hispanic White	838
Black	50
Hispanic	212
Asian	12
Other	21
Native American	0

**Age**
From 65 to 74	430
From 75 to 84	433
85 and over	183
Less than 65	87

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	43
Depression	32
Chronic Kidney Disease	37
Asthma	23
Osteoperosis	16
Atrial Fibrilation	29
Heart Failure	29
Chronic Obstructive Pulmonary Disease	42
Diabetes	41
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2023 were pulmonary testing, lab tests, diabetes management and preventive care.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

diabetes management	505
doctor visit	3087
lab tests	600
preventive care	48
pulmonary testing	698
vaccines	48

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	458
Female	616

**Ethnicity**
Non-Hispanic White	815
Black	51
Hispanic	180
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	406
From 75 to 84	404
85 and over	186
Less than 65	78

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	38
Depression	32
Chronic Kidney Disease	33
Asthma	25
Osteoperosis	16
Atrial Fibrilation	26
Heart Failure	27
Chronic Obstructive Pulmonary Disease	39
Diabetes	37
Dementia	17
Cancer	15

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX during 2024 were pulmonary testing, lab tests, blood draw and bronchoscopy.

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

blood draw	101
bronchoscopy	20
doctor visit	1845
lab tests	103
pulmonary testing	788

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	478
Female	646

**Ethnicity**
Non-Hispanic White	835
Black	46
Hispanic	217
Asian	13
Other	13
Native American	0

**Age**
From 65 to 74	459
From 75 to 84	425
85 and over	178
Less than 65	62

Conditions of Medicare patients treated by Dr. David A. Marks, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	40
Depression	30
Chronic Kidney Disease	33
Asthma	24
Osteoperosis	16
Atrial Fibrilation	27
Heart Failure	28
Chronic Obstructive Pulmonary Disease	38
Diabetes	39
Dementia	16
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. David A. Marks, MD for Medicare patients.

The highest averages for the top procedures that Dr. David A. Marks, MD treated as a pulmonologist in San Antonio, TX were pulmonary testing, hospital care, inpatient care and lab tests.

airway management	50
blood draw	76
bronchoscopy	47
cardiac procedures	12
catheterization	15
chronic care	20
diabetes management	289
diagnostic procedures	31
doctor visit	1902
hospital care	543
inpatient care	542
lab tests	359
minimally invasive procedures	29
outpatient care	13
preventive care	71
pulmonary testing	667
sleep study	156
tracheal (windpipe) procedures	12
vaccines	50

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. David A. Marks, MD.

**Gender**
Male	458
Female	596

**Ethnicity**
Black / African American	38
Asian / Pacific Islander	6
Non-Hispanic White	833
Hispanic	155
Native American / Alaskan Native	0
Other	10

**Age**
85 and over	136
75 to 84	344
Less than 65	90
65 to 74	484

Average of Total of Conditions of Medicare patients treated by Dr. David A. Marks, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	35
Asthma	24
Osteoporosis	10
Heart Failure	25
Chronic Obstructive Pulmonary Disease	38
Diabetes	34
Atrial Fibrillation	17
Cancer	12
Dementia	13

Education & Training

Dr. David A. Marks, MD graduated from University of Texas Health Science Center at San Antonio, School of Medicine. He completed residency at University of Texas Health Science Center at San Antonio and Affiliated Hospitals. He is certified by the Certification: American Board of Internal Medicine and has a state license in Texas.

Medical School: University of Texas Health Science Center at San Antonio, School of Medicine

Residency: University of Texas Health Science Center at San Antonio and Affiliated Hospitals

Board Certification: Certification: American Board of Internal Medicine

Licensed In: Texas

Affiliations & Hospitals

Dr. David A. Marks, MD is associated with these hospitals and organizations:

Methodist Health System

CHRISTUS Health

Pulmonary & Sleep Institute, PA

Methodist Hospital Stone Oak

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General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$296,833 BREZTRI $178,784	AIRSUPRA $99,421	DALIRESP $5,533	SYMBICORT $4,989	BEVESPI AEROSPHERE $4,539	Other $3,569
Boehringer Ingelheim Pharmaceuticals, Inc.	$43,737 STIOLTO RESPIMAT $20,242	STIOLTO $3,603	OFEV $992	SPIRIVA RESPIMAT $185	Spiriva $138	Other $18,578
GlaxoSmithKline, LLC.	$36,578 TRELEGY ELLIPTA $34,918	NUCALA $556	BREO $375	ANORO $350	ANORO ELLIPTA $137	Other $243
Teva Pharmaceuticals USA, Inc.	$10,587 NUVIGIL $10,524	PROAIR $41	QVAR $22
Bayer HealthCare Pharmaceuticals Inc.	$6,959 Adempas $6,959
Other	$40,129 Da Vinci Surgical System $6,749	DALIRESP $6,079	NIOX VERO DEVICE $4,028	ACTHAR $2,964	Kcentra $2,076	Other $18,232

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$350,790
Food and Beverage	$31,566
Travel and Lodging	$30,817
Honoraria	$11,005
Education	$5,911
Other	$4,734

Research Payments

Dr. David A. Marks, MD has received 204 research payments totaling $809,473.

Biography

Dr. David Marks practices adult critical care, sleep medicine, and adult pulmonology in San Antonio, TX. Dr. Marks's clinical interests include lung cancer, asthma, and narcolepsy. He graduated from the University of Texas Health Science Center at San Antonio, School of Medicine. For his professional training, Dr. Marks completed a residency program at a hospital affiliated with the University of Texas Health Science Center at San Antonio. Awards and/or distinctions Dr. Marks has received include Texas Super Doctors and Texas Rising Stars. He speaks Spanish. He is affiliated with Methodist Health System and CHRISTUS Health.