In 2024, Dr. Mark W. Schaar, MD had a list price for A1C test, diabetes screening, glycated protein test, and preventive care that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Michigan. 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 10%

By Affordability:

blood tests

diabetes management

screening test

In 2024, Dr. Mark W. Schaar, MD had a list price for blood tests, diabetes management, and screening test that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Michigan. 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. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2012 were lab tests, preventive care, diabetes management and emergency care.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	95
doctor visit	774
emergency care	19
lab tests	196
preventive care	95

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

doctor visit	617

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	128
Female	131

**Ethnicity**
Non-Hispanic White	243
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	64
85 and over	29
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2013

Hypertension	54
High Cholesterol	51
Stroke	7
Ischemic Heart Disease	34
Depression	30
Chronic Kidney Disease	16
Asthma	8
Osteoperosis	0
Atrial Fibrilation	5
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	36
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

doctor visit	541

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	116
Female	76

**Age**
From 65 to 74	93
From 75 to 84	41
85 and over	12
Less than 65	46

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2014

Hypertension	56
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	40
Depression	39
Chronic Kidney Disease	18
Asthma	10
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	36
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

doctor visit	519

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	224
Female	166

**Age**
From 65 to 74	192
From 75 to 84	94
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2015

Hypertension	58
High Cholesterol	50
Stroke	7
Ischemic Heart Disease	35
Depression	37
Chronic Kidney Disease	16
Asthma	14
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	33
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

doctor visit	511

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	107
Female	70

**Age**
From 65 to 74	87
From 75 to 84	44
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2016

Hypertension	63
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	34
Depression	36
Chronic Kidney Disease	20
Asthma	21
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2017 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	26
doctor visit	517
lab tests	26
preventive care	40
vaccines	14

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	148
Female	87

**Ethnicity**
Non-Hispanic White	218
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	120
From 75 to 84	43
85 and over	19
Less than 65	53

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2017

Hypertension	59
High Cholesterol	56
Stroke	8
Ischemic Heart Disease	28
Depression	38
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2018 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	84
doctor visit	619
lab tests	95
preventive care	133
vaccines	49

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	116
Female	84

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	39
85 and over	21
Less than 65	45

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2018

Hypertension	62
High Cholesterol	55
Stroke	7
Ischemic Heart Disease	29
Depression	36
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	13
Diabetes	34
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2019 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	88
doctor visit	555
lab tests	88
preventive care	118
vaccines	30

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	132
Female	82

**Ethnicity**
Non-Hispanic White	195
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	44
85 and over	18
Less than 65	38

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2019

Hypertension	62
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	31
Depression	35
Chronic Kidney Disease	21
Asthma	9
Osteoperosis	5
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	31
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2020 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	76
doctor visit	341
lab tests	76
preventive care	104
vaccines	28

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	91
Female	64

**Ethnicity**
Non-Hispanic White	144
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	84
From 75 to 84	29
85 and over	11
Less than 65	31

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2020

Hypertension	57
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	26
Depression	32
Chronic Kidney Disease	22
Asthma	8
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2021 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	53
doctor visit	269
lab tests	53
preventive care	53

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	71
Female	43

**Age**
From 65 to 74	55
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2021

Hypertension	65
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	28
Depression	39
Chronic Kidney Disease	32
Asthma	14
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	38
Dementia	0
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2022 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	45
doctor visit	233
lab tests	45
preventive care	60
vaccines	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	65
Female	40

**Age**
From 65 to 74	52
From 75 to 84	24
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2022

Hypertension	69
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	28
Depression	27
Chronic Kidney Disease	14
Asthma	17
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	0
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2023 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	33
doctor visit	194
lab tests	33
preventive care	33

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	54
Female	36

**Age**
From 65 to 74	43
From 75 to 84	24
85 and over	11
Less than 65	12

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2023

Hypertension	72
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	29
Depression	23
Chronic Kidney Disease	0
Asthma	16
Osteoperosis	0
Atrial Fibrilation	17
Heart Failure	0
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	0
Cancer	16

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI during 2024 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

diabetes management	46
doctor visit	192
lab tests	46
preventive care	46

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Male	58
Female	45

**Age**
From 65 to 74	47
From 75 to 84	28
85 and over	12
Less than 65	16

Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD in 2024

Hypertension	70
High Cholesterol	68
Stroke	13
Ischemic Heart Disease	26
Depression	28
Chronic Kidney Disease	20
Asthma	16
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	0
Chronic Obstructive Pulmonary Disease	17
Diabetes	38
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Mark W. Schaar, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark W. Schaar, MD treated as a family medicine practitioner in #a Holt, MI were preventive care, lab tests, diabetes management and vaccines.

diabetes management	60
doctor visit	452
emergency care	19
lab tests	73
preventive care	75
vaccines	27

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Mark W. Schaar, MD.

**Gender**
Female	71
Male	100

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	75
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	10
75 to 84	38
Less than 65	22
65 to 74	84

Average of Total of Conditions of Medicare patients treated by Dr. Mark W. Schaar, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Mark W. Schaar, MD treated were hypertension, high cholesterol, depression and diabetes.

Hypertension	57
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	28
Depression	30
Chronic Kidney Disease	17
Asthma	11
Osteoporosis	1
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Atrial Fibrillation	10
Cancer	10
Dementia	4

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. Mark W. Schaar, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Novo Nordisk Inc	$2,277 Ozempic $556	Victoza $455	RYBELSUS $434	Tresiba $272	Saxenda $239	Other $322
AstraZeneca Pharmaceuticals LP	$2,015 FARXIGA $915	SYMBICORT $303	BEVESPI AEROSPHERE $164	AIRSUPRA $125	BREZTRI $97	Other $412
Merck Sharp & Dohme Corporation	$1,779 BELSOMRA $597	LIPTRUZET $285	JANUMET XR $265	STEGLATRO $148	JANUMET $113	Other $372
Amgen Inc.	$1,736 Repatha $776	Aimovig $439	Prolia $372	Otezla $125	$24
GlaxoSmithKline, LLC.	$1,467 TRELEGY ELLIPTA $751	AREXVY $172	SHINGRIX $151	BREO $87	INCRUSE $63	Other $244
Other	$16,881 REXULTI $1,241	UBRELVY $793	VRAYLAR $768	NURTEC ODT $664	JARDIANCE $641	Other $12,773