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Dr. Mark Francis Grenquist, DO

(No ratings)

Specializes in: Internal Medicine (Adult Medicine) and Hospital Medicine (Hospitalist)
775 S Main Street
Chelsea, MI 48118

Dr. Mark Francis Grenquist, DO is an internist in Chelsea, MI specializing in internal medicine (adult medicine) and hospital medicine (hospitalist).

View Doctor's Full Profile (734) 593-6000

Office Locations

775 S Main Street
Chelsea, MI 48118
open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Mark Francis Grenquist, DO in 2023

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

Top 10%

By Affordability:

hospital care
inpatient care
inpatient hospital care

In 2023, Dr. Mark Francis Grenquist, DO had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) 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 Francis Grenquist, DO treated as an internist in Chelsea, MI during 2012 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 565
inpatient care 469
outpatient care 96

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2013 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 564
inpatient care 442
outpatient care 122

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 166
Female 238
Ethnicity
Non-Hispanic White 346
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 114
From 75 to 84 95
85 and over 90
Less than 65 105

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2013

Hypertension 75
High Cholesterol 62
Stroke 14
Ischemic Heart Disease 56
Depression 45
Chronic Kidney Disease 53
Asthma 14
Osteoperosis 11
Atrial Fibrilation 20
Heart Failure 47
Chronic Obstructive Pulmonary Disease 43
Diabetes 46
Dementia 28
Cancer 17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2014 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 198
inpatient care 161
outpatient care 37

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 70
Female 113
Ethnicity
Non-Hispanic White 159
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 45
From 75 to 84 39
85 and over 51
Less than 65 48

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2014

Hypertension 75
High Cholesterol 55
Stroke 19
Ischemic Heart Disease 57
Depression 50
Chronic Kidney Disease 54
Asthma 14
Osteoperosis 10
Atrial Fibrilation 20
Heart Failure 52
Chronic Obstructive Pulmonary Disease 43
Diabetes 40
Dementia 26
Cancer 14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 268
inpatient care 193
outpatient care 75

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 182
Female 308
Ethnicity
Non-Hispanic White 456
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 136
From 75 to 84 128
85 and over 88
Less than 65 138

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2015

Hypertension 75
High Cholesterol 59
Stroke 13
Ischemic Heart Disease 39
Depression 53
Chronic Kidney Disease 36
Asthma 24
Osteoperosis 13
Atrial Fibrilation 16
Heart Failure 27
Chronic Obstructive Pulmonary Disease 23
Diabetes 32
Dementia 24
Cancer 15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 310
inpatient care 225
outpatient care 85

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 130
Female 158
Ethnicity
Non-Hispanic White 274
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 82
From 75 to 84 73
85 and over 54
Less than 65 79

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2016

Hypertension 75
High Cholesterol 65
Stroke 13
Ischemic Heart Disease 44
Depression 56
Chronic Kidney Disease 41
Asthma 37
Osteoperosis 11
Atrial Fibrilation 16
Heart Failure 26
Chronic Obstructive Pulmonary Disease 30
Diabetes 36
Dementia 26
Cancer 15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 273
inpatient care 186
outpatient care 87

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 116
Female 160
Ethnicity
Non-Hispanic White 259
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 82
From 75 to 84 70
85 and over 61
Less than 65 63

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2017

Hypertension 75
High Cholesterol 61
Stroke 15
Ischemic Heart Disease 45
Depression 49
Chronic Kidney Disease 46
Asthma 17
Osteoperosis 12
Atrial Fibrilation 16
Heart Failure 29
Chronic Obstructive Pulmonary Disease 28
Diabetes 31
Dementia 24
Cancer 11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 282
inpatient care 195
outpatient care 87

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 115
Female 149
Ethnicity
Non-Hispanic White 244
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 63
From 75 to 84 67
85 and over 60
Less than 65 74

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2018

Hypertension 75
High Cholesterol 63
Stroke 11
Ischemic Heart Disease 43
Depression 50
Chronic Kidney Disease 44
Asthma 13
Osteoperosis 8
Atrial Fibrilation 17
Heart Failure 33
Chronic Obstructive Pulmonary Disease 28
Diabetes 36
Dementia 25
Cancer 10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 252
inpatient care 140
outpatient care 112

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 105
Female 142
Ethnicity
Non-Hispanic White 231
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 72
From 75 to 84 73
85 and over 43
Less than 65 59

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2019

Hypertension 75
High Cholesterol 72
Stroke 15
Ischemic Heart Disease 51
Depression 53
Chronic Kidney Disease 45
Asthma 13
Osteoperosis 9
Atrial Fibrilation 19
Heart Failure 30
Chronic Obstructive Pulmonary Disease 31
Diabetes 34
Dementia 26
Cancer 15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 210
inpatient care 115
outpatient care 95

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 96
Female 120
Ethnicity
Non-Hispanic White 200
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 66
From 75 to 84 45
85 and over 53
Less than 65 52

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2020

Hypertension 75
High Cholesterol 63
Stroke 13
Ischemic Heart Disease 45
Depression 55
Chronic Kidney Disease 53
Asthma 14
Osteoperosis 12
Atrial Fibrilation 19
Heart Failure 34
Chronic Obstructive Pulmonary Disease 26
Diabetes 39
Dementia 25
Cancer 12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 233
inpatient care 152
outpatient care 81

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 91
Female 144
Ethnicity
Non-Hispanic White 222
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 62
From 75 to 84 63
85 and over 61
Less than 65 49

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2021

Hypertension 75
High Cholesterol 67
Stroke 11
Ischemic Heart Disease 48
Depression 55
Chronic Kidney Disease 50
Asthma 20
Osteoperosis 9
Atrial Fibrilation 22
Heart Failure 35
Chronic Obstructive Pulmonary Disease 30
Diabetes 34
Dementia 26
Cancer 15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

hospital care 231
inpatient care 176
outpatient care 55

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Male 100
Female 126
Ethnicity
Non-Hispanic White 214
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 57
From 75 to 84 71
85 and over 64
Less than 65 34

Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO in 2022

Hypertension 75
High Cholesterol 75
Stroke 22
Ischemic Heart Disease 42
Depression 48
Chronic Kidney Disease 45
Asthma 18
Osteoperosis 16
Atrial Fibrilation 31
Heart Failure 38
Chronic Obstructive Pulmonary Disease 29
Diabetes 34
Dementia 16
Cancer 20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Francis Grenquist, DO for Medicare patients.

The highest averages for the top procedures that Dr. Mark Francis Grenquist, DO treated as an internist in Chelsea, MI were hospital care, inpatient care and outpatient care.

hospital care 307
inpatient care 223
outpatient care 84

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Francis Grenquist, DO.

Gender
Female 150
Male 106
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 236
Hispanic 0
Native American / Alaskan Native 0
Other 0
Age
85 and over 56
75 to 84 65
Less than 65 63
65 to 74 70

Average of Total of Conditions of Medicare patients treated by Dr. Mark Francis Grenquist, DO From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark Francis Grenquist, DO treated were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension 68
High Cholesterol 58
Stroke 13
Ischemic Heart Disease 42
Depression 46
Chronic Kidney Disease 42
Asthma 16
Osteoporosis 10
Heart Failure 31
Chronic Obstructive Pulmonary Disease 28
Diabetes 32
Atrial Fibrillation 17
Dementia 22
Cancer 13

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 Francis Grenquist, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
FOREST PHARMACEUTICALS, INC. $31 DALIRESP
$31
Takeda Pharmaceuticals U.S.A., Inc. $22 Kazano
$22
GlaxoSmithKline, LLC. $14 INCRUSE
$14
Types of Payments
Food and Beverage $68

Biography

Dr. Mark Grenquist is a specialist in hospital medicine (hospitalist) in Chelsea, MI. Dr. Grenquist is a graduate of Michigan State University College of Human Medicine.

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