In 2024, among providers in related specialties within New Hampshire, Dr. John P. Brennan, MD performed more blood draw, complete blood count (CBC), endobronchial biopsy, phlebotomy for lab tests, and pulmonary function test (PFT) procedures for Medicare patients than 95% of them and he also had a list price for blood draw, and lung biopsy 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 25%

By Volume:

bronchoscopy

By Affordability:

bronchoscopy with biopsy

lung diffusion capacity test

lung volume test

pulmonary function test

pulmonary testing

In 2012, among providers in related specialties within New Hampshire, Dr. John P. Brennan, MD performed more bronchoscopy procedures for Medicare patients than 75% of them and he also had a list price for bronchoscopy with biopsy, lung diffusion capacity test (DLCO), lung volume test, pulmonary function test (PFT), and pulmonary testing 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 P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2012 were pulmonary testing, inpatient care, hospital care and aspiration.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	28
blood draw	28
bronchoscopy	13
catheterization	27
diagnostic procedures	13
doctor visit	448
hospital care	170
inpatient care	170
lab tests	12
minimally invasive procedures	13
minor procedures	13
pleural drainage	15
pulmonary testing	189
tracheal (windpipe) procedures	17

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2013 were hospital care, inpatient care, pulmonary testing and blood draw.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	18
blood draw	45
bronchoscopy	33
catheterization	32
diagnostic procedures	18
doctor visit	515
hospital care	175
inpatient care	175
lab tests	18
minimally invasive procedures	18
minor procedures	18
pulmonary testing	127
tracheal (windpipe) procedures	16

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	219
Female	266

**Age**
From 65 to 74	164
From 75 to 84	175
85 and over	66
Less than 65	80

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2013

Hypertension	73
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	46
Depression	33
Chronic Kidney Disease	41
Asthma	14
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	42
Chronic Obstructive Pulmonary Disease	54
Diabetes	31
Dementia	12
Cancer	18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2014 were hospital care, inpatient care, pulmonary testing and blood draw.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	11
blood draw	29
bronchoscopy	22
catheterization	18
diagnostic procedures	11
doctor visit	598
hospital care	173
inpatient care	173
minimally invasive procedures	11
minor procedures	11
pulmonary testing	97

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	200
Female	280

**Age**
From 65 to 74	178
From 75 to 84	164
85 and over	70
Less than 65	68

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2014

Hypertension	75
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	46
Depression	39
Chronic Kidney Disease	40
Asthma	16
Osteoperosis	14
Atrial Fibrilation	23
Heart Failure	42
Chronic Obstructive Pulmonary Disease	60
Diabetes	34
Dementia	9
Cancer	20

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2015 were pulmonary testing, inpatient care, hospital care and preventive care.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	20
blood draw	48
bronchoscopy	34
catheterization	23
diagnostic procedures	20
doctor visit	553
hospital care	136
inpatient care	136
lab tests	34
minimally invasive procedures	20
minor procedures	20
preventive care	73
pulmonary testing	176
tracheal (windpipe) procedures	13
vaccines	73

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	456
Female	538

**Age**
From 65 to 74	356
From 75 to 84	348
85 and over	150
Less than 65	140

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2015

Hypertension	72
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	47
Depression	35
Chronic Kidney Disease	38
Asthma	39
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	36
Chronic Obstructive Pulmonary Disease	57
Diabetes	34
Dementia	11
Cancer	19

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2016 were pulmonary testing, inpatient care, hospital care and preventive care.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	17
blood draw	42
bronchoscopy	28
catheterization	20
diagnostic procedures	17
doctor visit	628
hospital care	86
inpatient care	86
lab tests	20
minimally invasive procedures	17
minor procedures	17
preventive care	48
pulmonary testing	157
vaccines	48

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	255
Female	297

**Ethnicity**
Non-Hispanic White	536
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	218
From 75 to 84	197
85 and over	71
Less than 65	66

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2016

Hypertension	71
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	38
Depression	33
Chronic Kidney Disease	34
Asthma	62
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	32
Chronic Obstructive Pulmonary Disease	58
Diabetes	31
Dementia	13
Cancer	20

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2017 were pulmonary testing, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	38
bronchoscopy	13
doctor visit	610
hospital care	118
inpatient care	118
lab tests	38
preventive care	31
pulmonary testing	187
vaccines	31

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	270
Female	293

**Ethnicity**
Non-Hispanic White	548
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	204
From 75 to 84	207
85 and over	71
Less than 65	81

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2017

Hypertension	75
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	43
Depression	34
Chronic Kidney Disease	36
Asthma	17
Osteoperosis	9
Atrial Fibrilation	21
Heart Failure	33
Chronic Obstructive Pulmonary Disease	56
Diabetes	31
Dementia	13
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2018 were pulmonary testing, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	40
bronchoscopy	20
catheterization	14
counseling services	13
doctor visit	584
hospital care	68
inpatient care	68
lab tests	19
preventive care	37
pulmonary testing	125
vaccines	24

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	226
Female	288

**Age**
From 65 to 74	178
From 75 to 84	206
85 and over	65
Less than 65	65

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2018

Hypertension	74
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	42
Depression	31
Chronic Kidney Disease	36
Asthma	13
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	53
Diabetes	33
Dementia	10
Cancer	20

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2019 were pulmonary testing, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	51
bronchoscopy	14
counseling services	17
doctor visit	527
hospital care	115
inpatient care	115
lab tests	60
preventive care	32
pulmonary testing	247
vaccines	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	240
Female	310

**Ethnicity**
Non-Hispanic White	536
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	214
From 75 to 84	208
85 and over	66
Less than 65	62

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2019

Hypertension	73
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	42
Depression	34
Chronic Kidney Disease	36
Asthma	15
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	32
Chronic Obstructive Pulmonary Disease	49
Diabetes	30
Dementia	12
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2020 were pulmonary testing, hospital care, inpatient care and bronchoscopy.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	15
blood draw	25
bronchoscopy	37
diagnostic procedures	15
doctor visit	365
hospital care	55
inpatient care	55
lab tests	15
minimally invasive procedures	15
minor procedures	15
preventive care	11
pulmonary testing	116
vaccines	11

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	192
Female	288

**Ethnicity**
Non-Hispanic White	461
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	192
From 75 to 84	185
85 and over	46
Less than 65	57

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2020

Hypertension	69
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	41
Depression	34
Chronic Kidney Disease	36
Asthma	14
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	30
Chronic Obstructive Pulmonary Disease	53
Diabetes	29
Dementia	12
Cancer	18

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2021 were pulmonary testing, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	21
catheterization	12
doctor visit	487
hospital care	20
inpatient care	20
lab tests	12
preventive care	11
pulmonary testing	60
vaccines	11

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	178
Female	276

**Ethnicity**
Non-Hispanic White	442
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	178
85 and over	53
Less than 65	41

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2021

Hypertension	69
High Cholesterol	64
Stroke	3
Ischemic Heart Disease	46
Depression	35
Chronic Kidney Disease	38
Asthma	17
Osteoperosis	13
Atrial Fibrilation	18
Heart Failure	34
Chronic Obstructive Pulmonary Disease	50
Diabetes	31
Dementia	13
Cancer	20

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2022 were pulmonary testing, bronchoscopy, blood draw and lab tests.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	41
bronchoscopy	55
diagnostic procedures	30
doctor visit	610
hospital care	11
inpatient care	11
lab tests	39
minimally invasive procedures	30
pulmonary testing	130

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	228
Female	300

**Ethnicity**
Non-Hispanic White	504
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	206
85 and over	58
Less than 65	49

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2022

Hypertension	75
High Cholesterol	73
Stroke	7
Ischemic Heart Disease	31
Depression	26
Chronic Kidney Disease	23
Asthma	20
Osteoperosis	16
Atrial Fibrilation	24
Heart Failure	28
Chronic Obstructive Pulmonary Disease	52
Diabetes	25
Dementia	8
Cancer	24

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2023 were pulmonary testing, bronchoscopy, hospital care and inpatient care.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

blood draw	27
bronchoscopy	71
diagnostic procedures	35
doctor visit	822
hospital care	52
inpatient care	52
lab tests	18
minimally invasive procedures	35
pulmonary testing	113

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	240
Female	361

**Ethnicity**
Non-Hispanic White	574
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	228
From 75 to 84	264
85 and over	70
Less than 65	39

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2023

Hypertension	72
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	39
Depression	25
Chronic Kidney Disease	22
Asthma	24
Osteoperosis	18
Atrial Fibrilation	25
Heart Failure	28
Chronic Obstructive Pulmonary Disease	60
Diabetes	27
Dementia	7
Cancer	26

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH during 2024 were pulmonary testing, bronchoscopy, blood draw and minimally invasive procedures.

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

aspiration	19
blood draw	22
bronchoscopy	41
diagnostic procedures	21
doctor visit	898
lab tests	13
minimally invasive procedures	21
pleural drainage	19
pulmonary testing	419

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Male	251
Female	407

**Ethnicity**
Non-Hispanic White	625
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	268
From 75 to 84	270
85 and over	86
Less than 65	34

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2024

Hypertension	71
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	22
Asthma	24
Osteoperosis	21
Atrial Fibrilation	25
Heart Failure	25
Chronic Obstructive Pulmonary Disease	57
Diabetes	25
Dementia	6
Cancer	25

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John P. Brennan, MD for Medicare patients.

The highest averages for the top procedures that Dr. John P. Brennan, MD treated as a pulmonologist in Exeter, NH were pulmonary testing, inpatient care, hospital care and blood draw.

aspiration	18
blood draw	35
bronchoscopy	31
catheterization	20
counseling services	15
diagnostic procedures	20
doctor visit	588
hospital care	98
inpatient care	98
lab tests	24
minimally invasive procedures	20
minor procedures	15
pleural drainage	17
preventive care	34
pulmonary testing	164
tracheal (windpipe) procedures	15
vaccines	30

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John P. Brennan, MD.

**Gender**
Female	300
Male	227

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	325
Hispanic	0
Native American / Alaskan Native	0
Other	1

**Age**
85 and over	67
75 to 84	200
Less than 65	60
65 to 74	199

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

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

Hypertension	66
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	38
Depression	29
Chronic Kidney Disease	30
Asthma	21
Osteoporosis	11
Heart Failure	30
Chronic Obstructive Pulmonary Disease	50
Diabetes	27
Atrial Fibrillation	19
Cancer	18
Dementia	9

Education & Training

He has a state license in New Hampshire.

Licensed In: New Hampshire

Ratings & Reviews

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General Payments

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

**Payments by Company**
Covidien LP	$1,444 Interventional Lung Solutions $1,444
Cook Incorporated	$170 Peripheral Intervention $85	Aortic Intervention $85
Medtronic, Inc.	$51 ILLUMISITE $32	Sonicision $19
GlaxoSmithKline, LLC.	$31 TRELEGY ELLIPTA $19	NUCALA $12
Sunovion Pharmaceuticals Inc.	$27 Lonhala Magnair $27
Other	$49 EVARREST $25	BREZTRI AEROSPHERE $12	$13

**Types of Payments**
Travel and Lodging	$1,407
Food and Beverage	$354
Education	$12

Biography

Dr. John Brennan is an Exeter, NH physician who specializes in adult critical care and adult pulmonology. Dr. Brennan obtained a license to practice in New Hampshire.

Select Year:

Dr. John P. Brennan, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John P. Brennan, MD in 2024

By Volume:

By Affordability:

By Volume:

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 P. Brennan, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John P. Brennan, 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 P. Brennan, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Exeter, NH