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Dr. Douglas A. Rennert, MD

(Dr. Douglas Rennert, M.D.)

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

Columbia University, College of Physicians and Surgeons (1984)

Professional interests include: chronic obstructive pulmonary disease (COPD), asthma, interstitial lung disease, and more.

19455 Deerfield Avenue Suite 206
Leesburg, VA 20176

(703) 858-9608

Dr. Douglas A. Rennert, MD is a pulmonologist in Reston, VA specializing in adult pulmonology, sleep medicine and adult critical care. He graduated from Columbia University, College of Physicians and Surgeons in 1984 and has 42 years of experience. Dr. Douglas A. Rennert, MD is affiliated with Reston Hospital Center, HCA Virginia and PULMONARY AND CRITICAL CARE ASSOCIATES, P.C..

Office Locations

1860 Town Center Drive Suite 270
Reston, VA 20190

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19455 Deerfield Avenue Suite 206
Leesburg, VA 20176

(703) 858-9608

(702) 858-9618

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Some issues Dr. Douglas A. Rennert, 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.

Sleep Study

A sleep study reveals important insights about a patient's sleep patterns by measuring brain activity, breathing, and movement. There are five types of sleep studies: a polysomnogram, titration sleep study, split night sleep study, multiple sleep latency test, and at-home sleep study. Sleep studies may help identify conditions such as:

Insomnia
Sleep apnea
Restless legs syndrome
Sleep walking
REM sleep behavior disorder
Narcolepsy

The most widely performed sleep test is the traditional polysomnogram (PSG). This test is typically used to determine whether patients have sleep apnea (lapses in breathing while asleep). Polysomnograms are conducted overnight in a specialized sleep clinic or sleep center, where a patient enters the sleep center and is assigned to a room with a bed, medical equipment, and monitoring system. An overnight sleep technician attaches electrodes to the patient's head, chest, and legs. This application process lasts for around an hour. A sleep technician watches and evaluates the patient as they sleep. Objects such as a comfortable pillow from home, toiletries, and small personal items may be helpful in easing patients into sleep in unfamiliar surroundings.

Patients receive their physician-interpreted sleep study results within a few weeks of the test. If sleep apnea is detected, patients may be asked to return for a titration sleep study. A titration study involves the same procedures and electrode placement of a polysomnogram, but also includes a mask attached to a CPAP (continuous positive airway pressure) machine. The CPAP machine brings pressurized air to the patient. The technician may monitor and adjust the CPAP's air pressure throughout the night. The purpose of a titration study is to determine the appropriate air pressure for patients with obstructive sleep apnea (blocked upper airway).

A split night study combines the polysomnogram and titration sleep studies into two sessions on the same night. Split night studies enable patients to complete both studies quickly instead of waiting weeks in between tests and may expedite the interpretation of results and treatment.

Multiple sleep latency test (MSLT) measures how fast someone is able to fall asleep. Unlike other sleep tests, this test is performed during the day. It may take place after an overnight sleep study. The MSLT test monitors napping and potential for daytime sleepiness and exhaustion.

At-home sleep tests are fully conducted by patients in their own homes. Patients attach fewer electrodes, a breathing sensor, a microphone, and a data collection device to themselves and sleep in their own beds. The following morning, patients gather the data collection device and return it to their medical providers. While at-home sleep tests are convenient, they are not recommended for patients with severe sleep problems. At-home sleep tests are less precise than clinical tests and do not measure brain activity.

Sleep studies are essential to helping patients receive accurate sleep disorder diagnoses and proper treatment. A sleep study can be the first step towards higher quality sleep and physical health.

Noteworthy Medicare Patient Procedures Performed by Dr. Douglas A. Rennert, MD in 2023

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

Top 5%

By Volume:

pulmonary function test

In 2023, Dr. Douglas A. Rennert, MD performed more pulmonary function test (PFT) procedures for Medicare patients than 95% of providers in related specialties within Virginia.

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. Douglas A. Rennert, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within Virginia.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2012 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	26
doctor visit	671
hospital care	680
inpatient care	680
pulmonary testing	173
sleep study	48
thoracic (chest) imaging	61
X-rays	61

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2013 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	17
bronchoscopy	12
doctor visit	696
hospital care	645
inpatient care	645
minimally invasive procedures	12
pulmonary testing	183
sleep study	30
thoracic (chest) imaging	75
X-rays	75

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	274
Female	367

**Ethnicity**
Non-Hispanic White	523
Black	48
Hispanic	0
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	221
85 and over	114
Less than 65	50

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2013

Hypertension	75
High Cholesterol	62
Stroke	14
Ischemic Heart Disease	50
Depression	24
Chronic Kidney Disease	39
Asthma	24
Osteoperosis	9
Atrial Fibrilation	24
Heart Failure	42
Chronic Obstructive Pulmonary Disease	42
Diabetes	37
Dementia	17
Cancer	19

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2014 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	20
catheterization	24
doctor visit	785
hospital care	598
inpatient care	598
pulmonary testing	218
sleep study	40
thoracic (chest) imaging	61
X-rays	61

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	317
Female	345

**Ethnicity**
Non-Hispanic White	546
Black	42
Hispanic	15
Asian	47
Other	12
Native American	0

**Age**
From 65 to 74	278
From 75 to 84	223
85 and over	112
Less than 65	49

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2014

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	51
Depression	26
Chronic Kidney Disease	44
Asthma	25
Osteoperosis	11
Atrial Fibrilation	25
Heart Failure	43
Chronic Obstructive Pulmonary Disease	42
Diabetes	38
Dementia	14
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2015 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	23
catheterization	18
doctor visit	973
hospital care	745
inpatient care	745
pulmonary testing	280
sleep study	47
thoracic (chest) imaging	65
X-rays	65

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	722
Female	890

**Ethnicity**
Non-Hispanic White	1324
Black	96
Hispanic	40
Asian	114
Other	38
Native American	0

**Age**
From 65 to 74	642
From 75 to 84	576
85 and over	296
Less than 65	98

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2015

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	43
Asthma	35
Osteoperosis	12
Atrial Fibrilation	24
Heart Failure	38
Chronic Obstructive Pulmonary Disease	41
Diabetes	36
Dementia	17
Cancer	19

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2016 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	13
catheterization	17
doctor visit	896
hospital care	405
inpatient care	405
pulmonary testing	241
sleep study	13
thoracic (chest) imaging	66
X-rays	66

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	286
Female	387

**Ethnicity**
Non-Hispanic White	562
Black	40
Hispanic	0
Asian	42
Other	14
Native American	0

**Age**
From 65 to 74	274
From 75 to 84	236
85 and over	130
Less than 65	33

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2016

Hypertension	75
High Cholesterol	64
Stroke	12
Ischemic Heart Disease	48
Depression	27
Chronic Kidney Disease	47
Asthma	54
Osteoperosis	9
Atrial Fibrilation	24
Heart Failure	40
Chronic Obstructive Pulmonary Disease	45
Diabetes	34
Dementia	20
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2017 were hospital care, inpatient care, pulmonary testing and X-rays.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	11
doctor visit	853
hospital care	340
inpatient care	340
pulmonary testing	238
sleep study	11
thoracic (chest) imaging	72
X-rays	72

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	264
Female	353

**Ethnicity**
Non-Hispanic White	510
Black	32
Hispanic	16
Asian	43
Other	0
Native American	0

**Age**
From 65 to 74	243
From 75 to 84	234
85 and over	116
Less than 65	24

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	10
Ischemic Heart Disease	47
Depression	28
Chronic Kidney Disease	45
Asthma	28
Osteoperosis	9
Atrial Fibrilation	24
Heart Failure	38
Chronic Obstructive Pulmonary Disease	44
Diabetes	34
Dementia	18
Cancer	21

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2018 were pulmonary testing, hospital care, inpatient care and sleep study.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

doctor visit	1008
hospital care	359
inpatient care	359
pulmonary testing	446
sleep study	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	328
Female	418

**Ethnicity**
Non-Hispanic White	624
Black	34
Hispanic	20
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	272
From 75 to 84	301
85 and over	138
Less than 65	35

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	52
Depression	28
Chronic Kidney Disease	46
Asthma	28
Osteoperosis	10
Atrial Fibrilation	24
Heart Failure	37
Chronic Obstructive Pulmonary Disease	43
Diabetes	34
Dementia	18
Cancer	17

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2019 were pulmonary testing, hospital care, inpatient care and sleep study.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	17
doctor visit	957
hospital care	322
inpatient care	322
pulmonary testing	411
sleep study	36

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	290
Female	419

**Ethnicity**
Non-Hispanic White	580
Black	41
Hispanic	0
Asian	43
Other	28
Native American	0

**Age**
From 65 to 74	258
From 75 to 84	284
85 and over	137
Less than 65	30

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	9
Ischemic Heart Disease	52
Depression	31
Chronic Kidney Disease	48
Asthma	27
Osteoperosis	11
Atrial Fibrilation	23
Heart Failure	38
Chronic Obstructive Pulmonary Disease	44
Diabetes	33
Dementia	21
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2020 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

doctor visit	857
hospital care	583
inpatient care	583
pulmonary testing	327

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	280
Female	361

**Ethnicity**
Non-Hispanic White	526
Black	35
Hispanic	19
Asian	43
Other	18
Native American	0

**Age**
From 65 to 74	243
From 75 to 84	236
85 and over	135
Less than 65	27

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	53
Depression	29
Chronic Kidney Disease	50
Asthma	27
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	41
Chronic Obstructive Pulmonary Disease	45
Diabetes	35
Dementia	20
Cancer	18

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2021 were hospital care, inpatient care, pulmonary testing and sleep study.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

airway management	11
doctor visit	911
hospital care	589
inpatient care	589
pulmonary testing	491
sleep study	27

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	278
Female	407

**Ethnicity**
Non-Hispanic White	568
Black	40
Hispanic	16
Asian	36
Other	25
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	273
85 and over	124
Less than 65	26

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2021

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	53
Depression	31
Chronic Kidney Disease	46
Asthma	29
Osteoperosis	13
Atrial Fibrilation	25
Heart Failure	35
Chronic Obstructive Pulmonary Disease	39
Diabetes	34
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA during 2022 were pulmonary testing, hospital care, inpatient care and sleep study.

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

doctor visit	1346
hospital care	436
inpatient care	436
pulmonary testing	543
sleep study	16

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	309
Female	421

**Ethnicity**
Non-Hispanic White	611
Black	28
Hispanic	22
Asian	35
Other	34
Native American	0

**Age**
From 65 to 74	276
From 75 to 84	311
85 and over	130
Less than 65	13

Conditions of Medicare patients treated by Dr. Douglas A. Rennert, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	39
Depression	21
Chronic Kidney Disease	29
Asthma	38
Osteoperosis	18
Atrial Fibrilation	28
Heart Failure	27
Chronic Obstructive Pulmonary Disease	51
Diabetes	28
Dementia	9
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Douglas A. Rennert, MD for Medicare patients.

The highest averages for the top procedures that Dr. Douglas A. Rennert, MD treated as a pulmonologist in Reston, VA were hospital care, inpatient care, pulmonary testing and X-rays.

airway management	17
bronchoscopy	12
catheterization	19
doctor visit	904
hospital care	518
inpatient care	518
minimally invasive procedures	12
pulmonary testing	322
sleep study	28
thoracic (chest) imaging	66
X-rays	66

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Douglas A. Rennert, MD.

**Gender**
Male	304
Female	397

**Ethnicity**
Black / African American	39
Asian / Pacific Islander	45
Non-Hispanic White	579
Native American / Alaskan Native	0
Hispanic	13
Other	15

**Age**
75 to 84	263
85 and over	130
Less than 65	35
65 to 74	273

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

The highest averages of the most common conditions of Medicare patients that Dr. Douglas A. Rennert, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	59
Stroke	9
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	39
Asthma	28
Osteoporosis	10
Heart Failure	34
Chronic Obstructive Pulmonary Disease	39
Diabetes	31
Atrial Fibrillation	22
Dementia	15
Cancer	16

Education & Training

Dr. Douglas A. Rennert, MD graduated from Columbia University, College of Physicians and Surgeons in 1984. He completed residency at St. Luke's-Roosevelt Hospital Center. He has a state license in Virginia.

Medical School: Columbia University, College of Physicians and Surgeons (1984)

Residency: St. Luke's-Roosevelt Hospital Center

Licensed In: Virginia

Affiliations & Hospitals

Dr. Douglas A. Rennert, MD is associated with these hospitals and organizations:

Reston Hospital Center

HCA Virginia

PULMONARY AND CRITICAL CARE ASSOCIATES, P.C.

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General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$2,892 BREZTRI $889	FASENRA $816	SYMBICORT $800	TEZSPIRE $145	BEVESPI AEROSPHERE $68	Other $175
GlaxoSmithKline, LLC.	$2,163 TRELEGY ELLIPTA $686	NUCALA $583	BREO $332	ANORO $241	ANORO ELLIPTA $199	Other $124
Boehringer Ingelheim Pharmaceuticals, Inc.	$1,553 OFEV $651	SPIRIVA RESPIMAT $363	STIOLTO $168	COMBIVENT RESPIMAT $65	STIOLTO RESPIMAT $37	Other $269
Regeneron Healthcare Solutions, Inc.	$788 DUPIXENT $788
Mylan Specialty L.P.	$596 Perforomist $304	Yupelri $185	Wixela Inhub $17	$91
Other	$4,942 Wakix $403	Zemaira $362	GLASSIA $314	Esbriet $290	DUPIXENT $228	Other $3,345

**Types of Payments**
Food and Beverage	$12,395
Education	$540

Biography

Dr. Douglas Rennert is a physician who specializes in adult critical care, sleep medicine, and adult pulmonology. Dr. Rennert's areas of expertise include sleep study, bronchitis, and electrocardiogram (EKG). He studied medicine at Columbia University, College of Physicians and Surgeons. He completed his residency training at St. Luke's-Roosevelt Hospital Center. Dr. Rennert is professionally affiliated with Reston Hospital Center.