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Dr. Michael Brennan, DO

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Specializes in: Adolescent Medicine, Pediatrics (Child & Adolescent Medicine) and Adult Endocrinology

23715 Little Mack Avenue Suite 100
Saint Clair Shores, MI 48080

(586) 447-8021

Dr. Michael Brennan, DO is an adolescent medicine doctor in Rochester, MI specializing in adolescent medicine, pediatrics (child & adolescent medicine) and adult endocrinology.

Office Locations

1555 South Boulevard E Suite 360
Rochester, MI 48307

(248) 258-8740

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17412 W 13 Mile Road
Beverly Hills, MI 48025

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23715 Little Mack Avenue Suite 100
Saint Clair Shores, MI 48080

(586) 447-8021

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28050 Grand River Avenue
Farmington, MI 48336

(947) 521-8000

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468 Cadieux Road
Grosse Pointe, MI 48230

(313) 473-1000

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In The News

“Michael Brennan, D.O. Michael Brennan, D.O., an endocrinologist in St. Clair Shores affiliated with Beaumont Health, said he questions the term recovered from COVID-19.”—"Some COVID-19 'long haulers' have lingering health problems after recovery", Crain's Detroit Business, August 2020

Noteworthy Medicare Patient Procedures Performed by Dr. Michael Brennan, DO 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. Michael Brennan, DO performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within Michigan.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

doctor visit	12
hospital care	139
inpatient care	139

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2013 were hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

blood draw	50
doctor visit	114
hospital care	709
inpatient care	709

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	72
Female	146

**Ethnicity**
Non-Hispanic White	110
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	57
85 and over	21
Less than 65	64

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2013

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	67
Depression	33
Chronic Kidney Disease	68
Asthma	28
Osteoperosis	23
Atrial Fibrilation	17
Heart Failure	55
Chronic Obstructive Pulmonary Disease	42
Diabetes	75
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2014 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

aspiration	12
diabetes management	23
diagnostic procedures	12
doctor visit	225
hospital care	1033
image guided procedures	12
inpatient care	1033
lab tests	23
minimally invasive procedures	12
minor procedures	12
preventive care	23

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	106
Female	194

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

**Age**
From 65 to 74	104
From 75 to 84	68
85 and over	40
Less than 65	88

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2014

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	67
Depression	34
Chronic Kidney Disease	64
Asthma	26
Osteoperosis	16
Atrial Fibrilation	22
Heart Failure	49
Chronic Obstructive Pulmonary Disease	39
Diabetes	75
Dementia	24
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2015 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

diabetes management	115
doctor visit	368
hospital care	711
inpatient care	711
lab tests	115
preventive care	115

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	226
Female	436

**Ethnicity**
Non-Hispanic White	362
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	144
85 and over	80
Less than 65	202

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2015

Hypertension	75
High Cholesterol	71
Stroke	14
Ischemic Heart Disease	56
Depression	33
Chronic Kidney Disease	69
Asthma	30
Osteoperosis	15
Atrial Fibrilation	15
Heart Failure	41
Chronic Obstructive Pulmonary Disease	32
Diabetes	75
Dementia	23
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2016 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

aspiration	14
diabetes management	202
diagnostic procedures	14
doctor visit	461
hospital care	634
image guided procedures	14
inpatient care	634
lab tests	202
minimally invasive procedures	14
minor procedures	14
preventive care	202

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	133
Female	246

**Ethnicity**
Non-Hispanic White	226
Black	142
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	87
85 and over	46
Less than 65	113

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2016

Hypertension	75
High Cholesterol	72
Stroke	13
Ischemic Heart Disease	54
Depression	30
Chronic Kidney Disease	75
Asthma	40
Osteoperosis	23
Atrial Fibrilation	14
Heart Failure	43
Chronic Obstructive Pulmonary Disease	34
Diabetes	75
Dementia	24
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2017 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

diabetes management	213
doctor visit	589
hospital care	772
inpatient care	772
lab tests	213
preventive care	213

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	145
Female	284

**Ethnicity**
Non-Hispanic White	242
Black	169
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	94
85 and over	47
Less than 65	122

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2017

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	51
Depression	36
Chronic Kidney Disease	75
Asthma	18
Osteoperosis	18
Atrial Fibrilation	17
Heart Failure	42
Chronic Obstructive Pulmonary Disease	33
Diabetes	75
Dementia	25
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2018 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

blood draw	26
diabetes management	158
doctor visit	348
hospital care	631
inpatient care	631
lab tests	158
preventive care	158

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	142
Female	257

**Ethnicity**
Non-Hispanic White	247
Black	129
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	146
From 75 to 84	98
85 and over	48
Less than 65	107

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2018

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	58
Depression	37
Chronic Kidney Disease	75
Asthma	16
Osteoperosis	17
Atrial Fibrilation	20
Heart Failure	42
Chronic Obstructive Pulmonary Disease	36
Diabetes	75
Dementia	28
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2019 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

blood draw	47
diabetes management	42
doctor visit	126
hospital care	413
inpatient care	413
lab tests	42
preventive care	42

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	87
Female	159

**Ethnicity**
Non-Hispanic White	150
Black	84
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	55
85 and over	25
Less than 65	74

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2019

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	57
Depression	44
Chronic Kidney Disease	75
Asthma	18
Osteoperosis	18
Atrial Fibrilation	16
Heart Failure	46
Chronic Obstructive Pulmonary Disease	45
Diabetes	75
Dementia	26
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2020 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

blood draw	15
diabetes management	18
doctor visit	23
hospital care	535
inpatient care	535
lab tests	18
preventive care	18

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	89
Female	105

**Ethnicity**
Non-Hispanic White	123
Black	60
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	71
From 75 to 84	38
85 and over	26
Less than 65	59

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2020

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	60
Depression	35
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	16
Atrial Fibrilation	23
Heart Failure	54
Chronic Obstructive Pulmonary Disease	29
Diabetes	75
Dementia	27
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2021 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

blood draw	22
diabetes management	23
doctor visit	31
eye procedures	14
hospital care	270
inpatient care	270
lab tests	23
preventive care	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	54
Female	109

**Ethnicity**
Non-Hispanic White	99
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	67
From 75 to 84	33
85 and over	16
Less than 65	47

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2021

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	61
Depression	47
Chronic Kidney Disease	75
Asthma	21
Osteoperosis	25
Atrial Fibrilation	26
Heart Failure	50
Chronic Obstructive Pulmonary Disease	36
Diabetes	75
Dementia	34
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI during 2022 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

diabetes management	16
doctor visit	31
hospital care	253
inpatient care	253
lab tests	16
preventive care	16

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Male	52
Female	99

**Ethnicity**
Non-Hispanic White	101
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	38
85 and over	22
Less than 65	35

Conditions of Medicare patients treated by Dr. Michael Brennan, DO in 2022

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	58
Depression	41
Chronic Kidney Disease	69
Asthma	27
Osteoperosis	31
Atrial Fibrilation	28
Heart Failure	44
Chronic Obstructive Pulmonary Disease	38
Diabetes	75
Dementia	18
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Michael Brennan, DO for Medicare patients.

The highest averages for the top procedures that Dr. Michael Brennan, DO treated as an adolescent medicine doctor in Rochester, MI were hospital care, inpatient care, lab tests and preventive care.

aspiration	13
blood draw	32
diabetes management	90
diagnostic procedures	13
doctor visit	211
eye procedures	14
hospital care	554
image guided procedures	13
inpatient care	554
lab tests	90
minimally invasive procedures	13
minor procedures	13
preventive care	90

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Michael Brennan, DO.

**Gender**
Female	185
Male	100

**Ethnicity**
Black / African American	53
Asian / Pacific Islander	0
Non-Hispanic White	165
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	33
75 to 84	64
Less than 65	82
65 to 74	104

Average of Total of Conditions of Medicare patients treated by Dr. Michael Brennan, DO From 2012 - 2022

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

Hypertension	68
High Cholesterol	67
Stroke	12
Ischemic Heart Disease	53
Depression	33
Chronic Kidney Disease	65
Asthma	21
Osteoporosis	18
Heart Failure	42
Chronic Obstructive Pulmonary Disease	33
Diabetes	68
Atrial Fibrillation	18
Dementia	23
Cancer	11

Education & Training

He has a state license in Michigan.

Licensed In: Michigan

Ratings & Reviews

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General Payments

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

**Payments by Company**
Novo Nordisk Inc	$212,641 RYBELSUS $131,657	Ozempic $57,093	Xultophy 100/3.6 $108	$23,783
Bayer HealthCare Pharmaceuticals Inc.	$63,999 Kerendia $63,999
Dexcom, Inc.	$5,564 Dexcom CGM $2,215	Dexcom G5 Mobile CGM System $1,758	Dexcom G6 CGM System $1,591
Valeritas, Inc.	$3,843 V-GO $3,843
INSULET CORPORATION	$3,451 Omnipod $3,451
Other	$5,914 JARDIANCE $3,265	t-slim insulin pump $769	Freestyle Libre 2 $406	FREESTYLE LIBRE 3 $317	BD Nano 2nd Gen Pen Needle $250	Other $906

**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	$246,776
Travel and Lodging	$33,612
Food and Beverage	$8,862
Consulting Fee	$4,498
Honoraria	$1,600
Other	$65

Biography

Dr. Michael Brennan is a specialist in adult endocrinology and adolescent medicine. He is a graduate of Michigan State University College of Osteopathic Medicine.