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Dr. Mary Elizabeth Brennan, MD

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Specializes in: Hospital Medicine (Hospitalist) and Family Medicine

Stony Brook University Medical Center, School of Medicine (1993)

2121 Juan Tabo Boulevard Ne
Albuquerque, NM 87112

(505) 237-8800

Dr. Mary Elizabeth Brennan, MD is a hospitalist in Crownsville, MD specializing in hospital medicine (hospitalist) and family medicine. She graduated from Stony Brook University Medical Center, School of Medicine in 1993 and has 33 years of experience. Dr. Mary Elizabeth Brennan, MD is affiliated with SOUTHWEST MEDICAL ASSOCIATES, LLC.

Office Locations

1454 Fairfield Loop Road
Crownsville, MD 21032

(410) 987-6338

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2121 Juan Tabo Boulevard Ne
Albuquerque, NM 87112

(505) 237-8800

(505) 237-8801

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4701 Montgomery Boulevard Ne
Albuquerque, NM 87109

(505) 727-8360

(505) 727-8768

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Noteworthy Medicare Patient Procedures Performed by Dr. Mary Elizabeth Brennan, MD in 2023

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

Top 5%

By Volume:

inpatient hospital care

In 2023, Dr. Mary Elizabeth Brennan, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within Maryland.

Top 25%

By Volume:

nursing home care

By Affordability:

nursing home care

In 2012, among providers in related specialties within Maryland, Dr. Mary Elizabeth Brennan, MD performed more nursing home care procedures for Medicare patients than 75% of them and she also had a list price for nursing home care 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. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2012 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	578
inpatient care	565
outpatient care	13

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2013 were hospital care, inpatient care, outpatient care and nursing home care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	651
inpatient care	613
nursing home care	26
outpatient care	38

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	135
Female	160

**Ethnicity**
Non-Hispanic White	151
Black	0
Hispanic	106
Asian	0
Other	0
Native American	27

**Age**
From 65 to 74	105
From 75 to 84	62
85 and over	64
Less than 65	64

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2013

Hypertension	75
High Cholesterol	60
Stroke	13
Ischemic Heart Disease	52
Depression	45
Chronic Kidney Disease	61
Asthma	15
Osteoperosis	14
Atrial Fibrilation	26
Heart Failure	56
Chronic Obstructive Pulmonary Disease	42
Diabetes	51
Dementia	22
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	701
inpatient care	701

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	97
Female	118

**Ethnicity**
Non-Hispanic White	108
Black	0
Hispanic	76
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	57
85 and over	35
Less than 65	51

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2014

Hypertension	75
High Cholesterol	62
Stroke	11
Ischemic Heart Disease	48
Depression	50
Chronic Kidney Disease	63
Asthma	17
Osteoperosis	20
Atrial Fibrilation	22
Heart Failure	53
Chronic Obstructive Pulmonary Disease	42
Diabetes	50
Dementia	22
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	1747
inpatient care	1747

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	106
Female	88

**Ethnicity**
Non-Hispanic White	80
Black	0
Hispanic	70
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	0
85 and over	0
Less than 65	74

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2015

Hypertension	75
High Cholesterol	57
Stroke	21
Ischemic Heart Disease	48
Depression	57
Chronic Kidney Disease	69
Asthma	24
Osteoperosis	0
Atrial Fibrilation	19
Heart Failure	48
Chronic Obstructive Pulmonary Disease	32
Diabetes	65
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	1903
inpatient care	1903

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	141
Female	180

**Ethnicity**
Non-Hispanic White	172
Black	0
Hispanic	84
Asian	0
Other	0
Native American	48

**Age**
From 65 to 74	107
From 75 to 84	99
85 and over	56
Less than 65	59

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2016

Hypertension	75
High Cholesterol	64
Stroke	28
Ischemic Heart Disease	47
Depression	48
Chronic Kidney Disease	56
Asthma	28
Osteoperosis	19
Atrial Fibrilation	20
Heart Failure	36
Chronic Obstructive Pulmonary Disease	23
Diabetes	50
Dementia	28
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	867
inpatient care	867

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	121
Female	167

**Ethnicity**
Non-Hispanic White	154
Black	0
Hispanic	80
Asian	0
Other	0
Native American	37

**Age**
From 65 to 74	88
From 75 to 84	86
85 and over	50
Less than 65	64

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2017

Hypertension	75
High Cholesterol	57
Stroke	17
Ischemic Heart Disease	50
Depression	51
Chronic Kidney Disease	64
Asthma	14
Osteoperosis	18
Atrial Fibrilation	21
Heart Failure	44
Chronic Obstructive Pulmonary Disease	37
Diabetes	47
Dementia	35
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	725
inpatient care	708
outpatient care	17

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	127
Female	124

**Ethnicity**
Non-Hispanic White	134
Black	0
Hispanic	74
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	79
85 and over	37
Less than 65	39

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	12
Ischemic Heart Disease	61
Depression	47
Chronic Kidney Disease	70
Asthma	13
Osteoperosis	12
Atrial Fibrilation	29
Heart Failure	47
Chronic Obstructive Pulmonary Disease	32
Diabetes	59
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	354
inpatient care	354

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	128
Female	170

**Ethnicity**
Non-Hispanic White	145
Black	0
Hispanic	87
Asian	0
Other	0
Native American	53

**Age**
From 65 to 74	113
From 75 to 84	80
85 and over	59
Less than 65	46

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	15
Ischemic Heart Disease	63
Depression	39
Chronic Kidney Disease	73
Asthma	11
Osteoperosis	14
Atrial Fibrilation	27
Heart Failure	46
Chronic Obstructive Pulmonary Disease	28
Diabetes	52
Dementia	26
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

doctor visit	242
hospital care	176
inpatient care	176

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	120
Female	152

**Ethnicity**
Non-Hispanic White	173
Black	0
Hispanic	56
Asian	0
Other	0
Native American	30

**Age**
From 65 to 74	128
From 75 to 84	69
85 and over	41
Less than 65	34

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2020

Hypertension	71
High Cholesterol	57
Stroke	6
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	49
Asthma	11
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	556
inpatient care	543
outpatient care	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	92
Female	149

**Ethnicity**
Non-Hispanic White	119
Black	0
Hispanic	67
Asian	0
Other	0
Native American	38

**Age**
From 65 to 74	86
From 75 to 84	75
85 and over	39
Less than 65	41

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2021

Hypertension	75
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	49
Depression	42
Chronic Kidney Disease	69
Asthma	13
Osteoperosis	17
Atrial Fibrilation	18
Heart Failure	44
Chronic Obstructive Pulmonary Disease	29
Diabetes	52
Dementia	27
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

hospital care	575
inpatient care	560
outpatient care	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	126
Female	129

**Ethnicity**
Non-Hispanic White	157
Black	0
Hispanic	71
Asian	0
Other	0
Native American	13

**Age**
From 65 to 74	102
From 75 to 84	79
85 and over	49
Less than 65	25

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	43
Depression	38
Chronic Kidney Disease	41
Asthma	18
Osteoperosis	16
Atrial Fibrilation	29
Heart Failure	38
Chronic Obstructive Pulmonary Disease	32
Diabetes	39
Dementia	19
Cancer	21

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mary Elizabeth Brennan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary Elizabeth Brennan, MD treated as a hospitalist in Crownsville, MD were hospital care, inpatient care, nursing home care and outpatient care.

doctor visit	242
hospital care	803
inpatient care	794
nursing home care	26
outpatient care	19

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mary Elizabeth Brennan, MD.

**Gender**
Male	108
Female	130

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	126
Hispanic	70
Native American / Alaskan Native	22
Other	0

**Age**
75 to 84	62
85 and over	39
Less than 65	45
65 to 74	87

Average of Total of Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mary Elizabeth Brennan, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	67
High Cholesterol	57
Stroke	14
Ischemic Heart Disease	44
Depression	40
Chronic Kidney Disease	55
Asthma	14
Osteoporosis	13
Heart Failure	39
Chronic Obstructive Pulmonary Disease	28
Diabetes	45
Atrial Fibrillation	20
Cancer	10
Dementia	22

Education & Training

Dr. Mary Elizabeth Brennan, MD graduated from Stony Brook University Medical Center, School of Medicine in 1993. She has a state license in Maryland.

Medical School: Stony Brook University Medical Center, School of Medicine (1993)

Licensed In: Maryland

Affiliations & Hospitals

Dr. Mary Elizabeth Brennan, MD is associated with these hospitals and organizations:

SOUTHWEST MEDICAL ASSOCIATES, LLC

Ratings & Reviews

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General Payments

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

**Payments by Company**
ACell, Inc.	$118 $118
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$27 XIFAXAN $27
ViiV Healthcare Company	$26 TRIUMEQ $26
E.R. Squibb & Sons, L.L.C.	$21 ELIQUIS $21
Janssen Pharmaceuticals, Inc	$15 XARELTO $15

**Types of Payments**
Food and Beverage	$207

Biography

Dr. Mary Brennan specializes in family medicine and hospital medicine (hospitalist). She graduated from Stony Brook University Medical Center, School of Medicine.

Select Year:

Dr. Mary Elizabeth Brennan, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Mary Elizabeth Brennan, MD in 2023

By Volume:

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. Mary Elizabeth Brennan, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Mary Elizabeth Brennan, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Crownsville, MD