Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > IL Providers

Dr. John Davis, MD

(No ratings)

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

University of Illinois College of Medicine

900 Jorie Boulevard Suite 186
Oak Brook, IL 60523

(630) 954-6700

Dr. John Davis, MD is an adolescent medicine doctor in Oak Brook, IL specializing in adolescent medicine, internal medicine (adult medicine) and hospital medicine (hospitalist). He graduated from University of Illinois College of Medicine. Dr. John Davis, MD is affiliated with Powers Health and Powers Health Partners.

Office Locations

900 Jorie Boulevard Suite 186
Oak Brook, IL 60523

(630) 954-6700

(630) 954-1555

open_in_new

Powers Health Partners

901 Macarthur Boulevard
Munster, IN 46321

(219) 836-1600

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. John Davis, MD in 2024

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

Top 5%

By Volume:

inpatient hospital care

In 2024, Dr. John Davis, 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. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2012 were hospital care, inpatient care and tracheal (windpipe) procedures.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	269
inpatient care	269
tracheal (windpipe) procedures	11

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	35
inpatient care	35

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	29
Female	37

**Ethnicity**
Non-Hispanic White	34
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	15
From 75 to 84	24
85 and over	12
Less than 65	15

Conditions of Medicare patients treated by Dr. John Davis, MD in 2013

Hypertension	75
High Cholesterol	70
Stroke	24
Ischemic Heart Disease	74
Depression	42
Chronic Kidney Disease	58
Asthma	21
Osteoperosis	0
Atrial Fibrilation	30
Heart Failure	59
Chronic Obstructive Pulmonary Disease	44
Diabetes	61
Dementia	41
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2014 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	667
inpatient care	573
outpatient care	83

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	87
Female	126

**Ethnicity**
Non-Hispanic White	188
Black	12
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	71
85 and over	54
Less than 65	20

Conditions of Medicare patients treated by Dr. John Davis, MD in 2014

Hypertension	75
High Cholesterol	73
Stroke	19
Ischemic Heart Disease	62
Depression	32
Chronic Kidney Disease	51
Asthma	17
Osteoperosis	17
Atrial Fibrilation	25
Heart Failure	51
Chronic Obstructive Pulmonary Disease	45
Diabetes	44
Dementia	27
Cancer	24

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1031
inpatient care	909
outpatient care	122

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	312
Female	412

**Ethnicity**
Non-Hispanic White	620
Black	64
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	248
From 75 to 84	226
85 and over	190
Less than 65	60

Conditions of Medicare patients treated by Dr. John Davis, MD in 2015

Hypertension	75
High Cholesterol	73
Stroke	18
Ischemic Heart Disease	60
Depression	30
Chronic Kidney Disease	53
Asthma	32
Osteoperosis	16
Atrial Fibrilation	25
Heart Failure	49
Chronic Obstructive Pulmonary Disease	41
Diabetes	43
Dementia	27
Cancer	23

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	935
inpatient care	775
outpatient care	160

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	151
Female	204

**Ethnicity**
Non-Hispanic White	300
Black	30
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	117
85 and over	91
Less than 65	37

Conditions of Medicare patients treated by Dr. John Davis, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	61
Depression	38
Chronic Kidney Disease	60
Asthma	44
Osteoperosis	17
Atrial Fibrilation	30
Heart Failure	49
Chronic Obstructive Pulmonary Disease	38
Diabetes	45
Dementia	26
Cancer	25

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1021
inpatient care	911
outpatient care	110

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	160
Female	216

**Ethnicity**
Non-Hispanic White	326
Black	29
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	125
85 and over	107
Less than 65	33

Conditions of Medicare patients treated by Dr. John Davis, MD in 2017

Hypertension	75
High Cholesterol	72
Stroke	23
Ischemic Heart Disease	63
Depression	37
Chronic Kidney Disease	67
Asthma	15
Osteoperosis	15
Atrial Fibrilation	31
Heart Failure	56
Chronic Obstructive Pulmonary Disease	43
Diabetes	44
Dementia	30
Cancer	20

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1111
inpatient care	1006
outpatient care	105

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	180
Female	245

**Ethnicity**
Non-Hispanic White	349
Black	44
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	130
From 75 to 84	134
85 and over	117
Less than 65	44

Conditions of Medicare patients treated by Dr. John Davis, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	59
Depression	36
Chronic Kidney Disease	60
Asthma	14
Osteoperosis	13
Atrial Fibrilation	31
Heart Failure	51
Chronic Obstructive Pulmonary Disease	37
Diabetes	43
Dementia	28
Cancer	22

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1371
inpatient care	1224
outpatient care	147

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	222
Female	273

**Ethnicity**
Non-Hispanic White	394
Black	56
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	174
85 and over	122
Less than 65	49

Conditions of Medicare patients treated by Dr. John Davis, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	26
Ischemic Heart Disease	61
Depression	39
Chronic Kidney Disease	69
Asthma	14
Osteoperosis	17
Atrial Fibrilation	32
Heart Failure	53
Chronic Obstructive Pulmonary Disease	42
Diabetes	47
Dementia	31
Cancer	22

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1297
inpatient care	1163
outpatient care	134

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	182
Female	268

**Ethnicity**
Non-Hispanic White	372
Black	50
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	144
From 75 to 84	172
85 and over	94
Less than 65	40

Conditions of Medicare patients treated by Dr. John Davis, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	63
Depression	40
Chronic Kidney Disease	67
Asthma	15
Osteoperosis	12
Atrial Fibrilation	34
Heart Failure	55
Chronic Obstructive Pulmonary Disease	40
Diabetes	42
Dementia	33
Cancer	22

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	1005
inpatient care	844
outpatient care	161

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	161
Female	208

**Ethnicity**
Non-Hispanic White	294
Black	44
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	130
85 and over	77
Less than 65	43

Conditions of Medicare patients treated by Dr. John Davis, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	23
Ischemic Heart Disease	65
Depression	31
Chronic Kidney Disease	65
Asthma	12
Osteoperosis	15
Atrial Fibrilation	28
Heart Failure	54
Chronic Obstructive Pulmonary Disease	37
Diabetes	46
Dementia	34
Cancer	24

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

doctor visit	20
hospital care	1052
inpatient care	963
outpatient care	89

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	148
Female	195

**Ethnicity**
Non-Hispanic White	281
Black	35
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	112
From 75 to 84	118
85 and over	85
Less than 65	28

Conditions of Medicare patients treated by Dr. John Davis, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	33
Ischemic Heart Disease	57
Depression	38
Chronic Kidney Disease	52
Asthma	18
Osteoperosis	20
Atrial Fibrilation	44
Heart Failure	50
Chronic Obstructive Pulmonary Disease	44
Diabetes	44
Dementia	27
Cancer	26

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	852
inpatient care	852

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	141
Female	190

**Ethnicity**
Non-Hispanic White	240
Black	50
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	108
85 and over	85
Less than 65	25

Conditions of Medicare patients treated by Dr. John Davis, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	33
Ischemic Heart Disease	59
Depression	36
Chronic Kidney Disease	51
Asthma	15
Osteoperosis	21
Atrial Fibrilation	41
Heart Failure	54
Chronic Obstructive Pulmonary Disease	43
Diabetes	45
Dementia	25
Cancer	25

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

hospital care	785
inpatient care	785

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	147
Female	177

**Ethnicity**
Non-Hispanic White	256
Black	35
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	121
85 and over	92
Less than 65	11

Conditions of Medicare patients treated by Dr. John Davis, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	31
Ischemic Heart Disease	57
Depression	34
Chronic Kidney Disease	56
Asthma	15
Osteoperosis	27
Atrial Fibrilation	42
Heart Failure	50
Chronic Obstructive Pulmonary Disease	40
Diabetes	49
Dementia	26
Cancer	27

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John Davis, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Davis, MD treated as an adolescent medicine doctor in Oak Brook, IL were hospital care, inpatient care, outpatient care and tracheal (windpipe) procedures.

doctor visit	20
hospital care	879
inpatient care	793
outpatient care	123
tracheal (windpipe) procedures	11

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John Davis, MD.

**Gender**
Male	147
Female	196

**Ethnicity**
Black / African American	34
Asian / Pacific Islander	0
Non-Hispanic White	281
Native American / Alaskan Native	0
Hispanic	8
Other	0

**Age**
75 to 84	116
85 and over	86
Less than 65	31
65 to 74	109

Average of Total of Conditions of Medicare patients treated by Dr. John Davis, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	68
Stroke	22
Ischemic Heart Disease	57
Depression	33
Chronic Kidney Disease	54
Asthma	17
Osteoporosis	14
Heart Failure	48
Chronic Obstructive Pulmonary Disease	38
Diabetes	42
Atrial Fibrillation	30
Cancer	20
Dementia	27

Education & Training

Dr. John Davis, MD graduated from University of Illinois College of Medicine. He completed residency at University of Illinois at Peoria Affiliated Hospitals. He is certified by the Board Certification: Internal Medicine and has a state license in Illinois.

Medical School: University of Illinois College of Medicine

Residency: University of Illinois at Peoria Affiliated Hospitals

Board Certification: Board Certification: Internal Medicine

Licensed In: Illinois

Affiliations & Hospitals

Dr. John Davis, MD is associated with these hospitals and organizations:

Powers Health

Powers Health Partners

Ratings & Reviews

Dr. John Davis, MD does not have any reviews yet, be the first to leave a review of Dr. John Davis, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

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

**Payments by Company**
Janssen Pharmaceuticals, Inc	$302 XARELTO $284	INVOKANA $18
Otsuka America Pharmaceutical, Inc.	$259 SAMSCA $259
Pfizer Inc.	$184 ELIQUIS $184
Inari Medical, Inc.	$138 CT THROMBECTOMY SYSTEM KIT $138
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$137 Relistor $114	XIFAXAN $23
Other	$965 VYXEOS $130	ELIQUIS $127	Yupelri $112	Pradaxa $111	AIRSUPRA $100	Other $385

**Types of Payments**
Food and Beverage	$1,986

Biography

Dr. John Davis is a specialist in hospital medicine (hospitalist) and adolescent medicine. His professional affiliations include Powers Health and Community Hospital. Dr. Davis obtained his medical school training at the University of Illinois College of Medicine and performed his residency at a hospital affiliated with the University of Illinois at Peoria. Powers Health reports that he is not accepting new patients.