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Home > IL Providers > Internists & Internal Medicine Doctors

Dr. Ann Hagedorn, MD

(No ratings)

Specializes in: Internal Medicine (Adult Medicine) and Hospital Medicine (Hospitalist)

4550 Memorial Drive Suite 340
Belleville, IL 62226

(618) 257-6200

Dr. Ann Hagedorn, MD is an internist in Greenville, IL specializing in internal medicine (adult medicine) and hospital medicine (hospitalist).

Office Locations

200 Health Care Drive
Greenville, IL 62246

(618) 664-1230

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4550 Memorial Drive Suite 340
Belleville, IL 62226

(618) 257-6200

(618) 257-6679

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Noteworthy Medicare Patient Procedures Performed by Dr. Ann Hagedorn, 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. Ann Hagedorn, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2012 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	3581
inpatient care	3360
outpatient care	196

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2013 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1590
inpatient care	1572
outpatient care	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	203
Female	305

**Ethnicity**
Non-Hispanic White	418
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	159
From 75 to 84	145
85 and over	116
Less than 65	88

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2013

Hypertension	75
High Cholesterol	71
Stroke	13
Ischemic Heart Disease	62
Depression	38
Chronic Kidney Disease	49
Asthma	13
Osteoperosis	12
Atrial Fibrilation	27
Heart Failure	50
Chronic Obstructive Pulmonary Disease	41
Diabetes	44
Dementia	23
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2014 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1533
inpatient care	1518
outpatient care	15

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	244
Female	321

**Ethnicity**
Non-Hispanic White	445
Black	109
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	165
85 and over	129
Less than 65	93

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2014

Hypertension	75
High Cholesterol	74
Stroke	13
Ischemic Heart Disease	66
Depression	36
Chronic Kidney Disease	60
Asthma	15
Osteoperosis	12
Atrial Fibrilation	29
Heart Failure	58
Chronic Obstructive Pulmonary Disease	46
Diabetes	50
Dementia	26
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1566
inpatient care	1526
outpatient care	40

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	448
Female	604

**Ethnicity**
Non-Hispanic White	844
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	302
From 75 to 84	296
85 and over	264
Less than 65	190

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	64
Depression	43
Chronic Kidney Disease	62
Asthma	31
Osteoperosis	10
Atrial Fibrilation	27
Heart Failure	57
Chronic Obstructive Pulmonary Disease	44
Diabetes	51
Dementia	26
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1174
inpatient care	1137
outpatient care	37

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	233
Female	307

**Ethnicity**
Non-Hispanic White	422
Black	99
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	167
From 75 to 84	160
85 and over	128
Less than 65	85

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2016

Hypertension	75
High Cholesterol	74
Stroke	13
Ischemic Heart Disease	62
Depression	41
Chronic Kidney Disease	65
Asthma	49
Osteoperosis	14
Atrial Fibrilation	25
Heart Failure	55
Chronic Obstructive Pulmonary Disease	48
Diabetes	48
Dementia	29
Cancer	19

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1285
inpatient care	1248
outpatient care	37

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	241
Female	391

**Ethnicity**
Non-Hispanic White	486
Black	128
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	198
85 and over	145
Less than 65	119

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	65
Depression	46
Chronic Kidney Disease	70
Asthma	13
Osteoperosis	12
Atrial Fibrilation	29
Heart Failure	61
Chronic Obstructive Pulmonary Disease	47
Diabetes	50
Dementia	34
Cancer	18

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2018 were nursing home care, hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	650
inpatient care	628
nursing home care	1179
outpatient care	22

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	290
Female	418

**Ethnicity**
Non-Hispanic White	518
Black	172
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	180
From 75 to 84	227
85 and over	189
Less than 65	112

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2018

Hypertension	75
High Cholesterol	74
Stroke	21
Ischemic Heart Disease	62
Depression	53
Chronic Kidney Disease	68
Asthma	12
Osteoperosis	10
Atrial Fibrilation	30
Heart Failure	62
Chronic Obstructive Pulmonary Disease	42
Diabetes	53
Dementia	48
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2019 were nursing home care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

nursing home care	1710

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	288
Female	371

**Ethnicity**
Non-Hispanic White	419
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	193
85 and over	219
Less than 65	87

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	26
Ischemic Heart Disease	61
Depression	56
Chronic Kidney Disease	66
Asthma	8
Osteoperosis	9
Atrial Fibrilation	28
Heart Failure	58
Chronic Obstructive Pulmonary Disease	37
Diabetes	54
Dementia	65
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2020 were nursing home care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

nursing home care	1372

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	183
Female	296

**Ethnicity**
Non-Hispanic White	316
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	141
85 and over	154
Less than 65	51

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	61
Depression	56
Chronic Kidney Disease	67
Asthma	7
Osteoperosis	7
Atrial Fibrilation	25
Heart Failure	57
Chronic Obstructive Pulmonary Disease	37
Diabetes	56
Dementia	67
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2021 were nursing home care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

nursing home care	1453

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	187
Female	277

**Ethnicity**
Non-Hispanic White	300
Black	153
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	137
85 and over	148
Less than 65	52

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	28
Ischemic Heart Disease	55
Depression	56
Chronic Kidney Disease	69
Asthma	8
Osteoperosis	8
Atrial Fibrilation	30
Heart Failure	57
Chronic Obstructive Pulmonary Disease	37
Diabetes	56
Dementia	68
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL during 2022 were hospital care, inpatient care and nursing home care.

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

hospital care	1948
inpatient care	1948
nursing home care	641

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Male	190
Female	329

**Ethnicity**
Non-Hispanic White	405
Black	101
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	155
From 75 to 84	187
85 and over	143
Less than 65	34

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	31
Ischemic Heart Disease	55
Depression	46
Chronic Kidney Disease	56
Asthma	11
Osteoperosis	21
Atrial Fibrilation	41
Heart Failure	58
Chronic Obstructive Pulmonary Disease	37
Diabetes	51
Dementia	38
Cancer	21

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Ann Hagedorn, MD for Medicare patients.

The highest averages for the top procedures that Dr. Ann Hagedorn, MD treated as an internist in Greenville, IL were hospital care, inpatient care, nursing home care and outpatient care.

hospital care	1665
inpatient care	1617
nursing home care	1271
outpatient care	52

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Ann Hagedorn, MD.

**Gender**
Female	329
Male	227

**Ethnicity**
Black / African American	69
Asian / Pacific Islander	0
Non-Hispanic White	415
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	148
75 to 84	168
Less than 65	82
65 to 74	157

Average of Total of Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Ann Hagedorn, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	68
High Cholesterol	67
Stroke	17
Ischemic Heart Disease	55
Depression	42
Chronic Kidney Disease	57
Asthma	15
Osteoporosis	10
Heart Failure	52
Chronic Obstructive Pulmonary Disease	37
Diabetes	46
Atrial Fibrillation	26
Dementia	38
Cancer	14

Education & Training

She has a state license in Illinois.

Licensed In: Illinois

Ratings & Reviews

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General Payments

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

**Payments by Company**
FOREST PHARMACEUTICALS, INC.	$147 VIIBRYD $91	DALIRESP $37	TEFLARO $19
Boehringer Ingelheim Pharmaceuticals, Inc.	$110 Pradaxa $97	SPIRIVA RESPIMAT $13
Genentech USA, Inc.	$110 Activase $110
SANOFI-AVENTIS U.S. LLC	$98 LANTUS $98
Otsuka America Pharmaceutical, Inc.	$60 SAMSCA $60
Other	$176 BRILINTA $26	NovoLog Mix 70 30 $21	XIFAXAN 550 MG TABLETS $20	AmBisome $20	Ultrasound Equipment $18	Other $71

**Types of Payments**
Food and Beverage	$700

Biography

Dr. Ann Hagedorn is a medical specialist in hospital medicine (hospitalist). Dr. Hagedorn graduated from the University of Missouri-Kansas City School of Medicine.

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Dr. Ann Hagedorn, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Ann Hagedorn, MD in 2023

By Volume:

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. Ann Hagedorn, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ann Hagedorn, 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. Ann Hagedorn, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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