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Dr. John Croghan, MD

(1 Rating)

Specializes in: Internal Medicine (Adult Medicine) and Rheumatology (Arthritis & Autoimmune Diseases)

Rush Medical College (1986)

710 Oak Street
Winnetka, IL 60093

(847) 986-6770

Dr. John Croghan, MD is an internist in Chicago, IL specializing in internal medicine (adult medicine) and rheumatology (arthritis & autoimmune diseases). He graduated from Rush Medical College in 1986 and has 40 years of experience. Dr. John Croghan, MD is affiliated with Endeavor Health.

Office Locations

20 N Wacker Drive #4120
Chicago, IL 60606

open_in_new

710 Oak Street
Winnetka, IL 60093

(847) 986-6770

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

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

Top 5%

By Volume:

chest CT scan

CT scan

lumbar spine CT scan

In 2024, Dr. John Croghan, MD performed more chest CT scan, CT scan, and lumbar spine (low-back) CT scan procedures for Medicare patients than 95% of providers in related specialties within Illinois.

Top 10%

By Volume:

flu shot

By Affordability:

In 2024, among providers in related specialties within Illinois, Dr. John Croghan, MD performed more flu shot procedures for Medicare patients than 90% of them and he also had a list price for flu shot, flu vaccine, immunization (preventive vaccines), and vaccines that was lower than the list prices billed to Medicare by 90% of them. 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 25%

By Affordability:

preventive care

In 2012, Dr. John Croghan, MD had a list price for preventive care that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Illinois. 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. John Croghan, MD treated as an internist in Chicago, IL during 2012 were lab tests, blood draw, nursing home care and preventive care.

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

aspiration	47
blood draw	298
diabetes management	25
doctor visit	604
ear procedures	16
hospital care	65
injections	47
inpatient care	65
lab tests	759
musculoskeletal imaging	66
nursing home care	140
preventive care	113
thyroid function tests	62
vaccines	20
X-rays	66

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2013 were blood draw, lab tests, nursing home care and preventive care.

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

aspiration	53
blood draw	413
doctor visit	1070
ear procedures	15
hospital care	41
injections	53
inpatient care	41
lab tests	338
nursing home care	234
preventive care	182
vaccines	182

2013 Medicare Patient Data

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

**Gender**
Male	186
Female	268

**Ethnicity**
Non-Hispanic White	436
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	184
85 and over	163
Less than 65	0

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

Hypertension	47
High Cholesterol	39
Stroke	6
Ischemic Heart Disease	35
Depression	24
Chronic Kidney Disease	20
Asthma	5
Osteoperosis	15
Atrial Fibrilation	17
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	13
Dementia	24
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2014 were blood draw, nursing home care, lab tests and preventive care.

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

aspiration	60
blood draw	426
doctor visit	1072
ear procedures	16
hospital care	68
injections	60
inpatient care	68
lab tests	243
nursing home care	277
preventive care	205
vaccines	205

2014 Medicare Patient Data

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

**Gender**
Male	198
Female	287

**Ethnicity**
Non-Hispanic White	464
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	189
85 and over	179
Less than 65	0

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

Hypertension	46
High Cholesterol	37
Stroke	8
Ischemic Heart Disease	29
Depression	28
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	14
Dementia	24
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2015 were blood draw, lab tests, preventive care and vaccines.

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

aspiration	49
blood draw	368
doctor visit	1007
ear procedures	17
injections	49
lab tests	336
nursing home care	255
preventive care	257
vaccines	257

2015 Medicare Patient Data

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

**Gender**
Male	406
Female	642

**Ethnicity**
Non-Hispanic White	1008
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	390
85 and over	404
Less than 65	0

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

Hypertension	41
High Cholesterol	33
Stroke	6
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	13
Dementia	22
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2016 were lab tests, blood draw, preventive care and nursing home care.

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

aspiration	41
blood draw	315
diabetes management	57
diagnostic procedures	41
doctor visit	617
hospital care	77
inpatient care	77
lab tests	841
minimally invasive procedures	41
minor procedures	41
nursing home care	260
preventive care	267
thoracic (chest) imaging	26
thyroid function tests	76
vaccines	153
X-rays	26

2016 Medicare Patient Data

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

**Gender**
Male	105
Female	170

**Age**
From 65 to 74	0
From 75 to 84	99
85 and over	137
Less than 65	0

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

Hypertension	54
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	32
Depression	34
Chronic Kidney Disease	24
Asthma	13
Osteoperosis	18
Atrial Fibrilation	17
Heart Failure	24
Chronic Obstructive Pulmonary Disease	13
Diabetes	16
Dementia	29
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2017 were blood draw, lab tests, nursing home care and preventive care.

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

aspiration	33
blood draw	337
CT scan	39
diagnostic procedures	33
doctor visit	587
hospital care	99
inpatient care	99
lab tests	312
minimally invasive procedures	33
minor procedures	33
nursing home care	121
preventive care	118
thoracic (chest) imaging	74
vaccines	118
X-rays	35

2017 Medicare Patient Data

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

**Gender**
Male	94
Female	157

**Age**
From 65 to 74	0
From 75 to 84	90
85 and over	124
Less than 65	0

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

Hypertension	53
High Cholesterol	33
Stroke	5
Ischemic Heart Disease	33
Depression	31
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	16
Atrial Fibrilation	20
Heart Failure	28
Chronic Obstructive Pulmonary Disease	18
Diabetes	16
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2018 were blood draw, lab tests, nursing home care and preventive care.

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

aspiration	42
blood draw	342
CT scan	35
diagnostic procedures	42
doctor visit	680
lab tests	215
minimally invasive procedures	42
minor procedures	42
nursing home care	146
preventive care	118
thoracic (chest) imaging	35
vaccines	118

2018 Medicare Patient Data

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

**Gender**
Male	93
Female	162

**Age**
From 65 to 74	0
From 75 to 84	87
85 and over	123
Less than 65	0

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

Hypertension	57
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	35
Depression	35
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	29
Chronic Obstructive Pulmonary Disease	17
Diabetes	16
Dementia	29
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2019 were blood draw, lab tests, nursing home care and preventive care.

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

aspiration	29
blood draw	300
CT scan	36
diagnostic procedures	29
doctor visit	606
lab tests	172
minimally invasive procedures	29
minor procedures	29
nursing home care	130
preventive care	122
thoracic (chest) imaging	36
vaccines	122

2019 Medicare Patient Data

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

**Gender**
Male	104
Female	160

**Age**
From 65 to 74	0
From 75 to 84	79
85 and over	125
Less than 65	0

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

Hypertension	58
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	38
Depression	36
Chronic Kidney Disease	27
Asthma	5
Osteoperosis	17
Atrial Fibrilation	17
Heart Failure	28
Chronic Obstructive Pulmonary Disease	16
Diabetes	19
Dementia	24
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2020 were blood draw, lab tests, nursing home care and CT scan.

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

abdominal imaging	11
aspiration	20
blood draw	312
CT scan	42
diagnostic procedures	20
doctor visit	1085
lab tests	110
minimally invasive procedures	20
minor procedures	20
nursing home care	66
pelvic imaging	11
thoracic (chest) imaging	31

2020 Medicare Patient Data

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

**Gender**
Male	90
Female	140

**Age**
From 65 to 74	0
From 75 to 84	69
85 and over	104
Less than 65	0

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

Hypertension	54
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	11
Diabetes	14
Dementia	27
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2021 were blood draw, nursing home care, lab tests and CT scan.

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

abdominal imaging	13
aspiration	23
blood draw	326
CT scan	48
diagnostic procedures	23
doctor visit	1121
lab tests	106
minimally invasive procedures	23
minor procedures	23
nursing home care	121
pelvic imaging	13
thoracic (chest) imaging	35

2021 Medicare Patient Data

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

**Gender**
Male	95
Female	154

**Ethnicity**
Non-Hispanic White	237
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	67
85 and over	118
Less than 65	0

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

Hypertension	55
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	38
Depression	32
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	18
Atrial Fibrilation	15
Heart Failure	27
Chronic Obstructive Pulmonary Disease	10
Diabetes	14
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2022 were blood draw, lab tests, CT scan and thoracic (chest) imaging.

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

blood draw	249
CT scan	17
doctor visit	1240
lab tests	18
thoracic (chest) imaging	17

2022 Medicare Patient Data

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

**Gender**
Male	84
Female	113

**Age**
From 65 to 74	55
From 75 to 84	61
85 and over	81
Less than 65	0

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

Hypertension	60
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	18
Asthma	8
Osteoperosis	28
Atrial Fibrilation	22
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	12
Dementia	15
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2023 were blood draw, CT scan, preventive care and vaccines.

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

blood draw	252
CT scan	36
doctor visit	1137
preventive care	27
spinal procedures	11
thoracic (chest) imaging	25
vaccines	27

2023 Medicare Patient Data

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

**Gender**
Male	85
Female	108

**Ethnicity**
Non-Hispanic White	181
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	52
85 and over	71
Less than 65	0

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

Hypertension	54
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	12
Asthma	8
Osteoperosis	26
Atrial Fibrilation	20
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	10
Dementia	8
Cancer	16

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL during 2024 were blood draw, preventive care, vaccines and CT scan.

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

blood draw	255
CT scan	38
doctor visit	1391
preventive care	76
spinal procedures	12
thoracic (chest) imaging	26
vaccines	76

2024 Medicare Patient Data

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

**Gender**
Male	91
Female	102

**Ethnicity**
Non-Hispanic White	178
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	53
85 and over	68
Less than 65	0

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

Hypertension	55
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	30
Depression	15
Chronic Kidney Disease	10
Asthma	7
Osteoperosis	31
Atrial Fibrilation	16
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	13
Dementia	9
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

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

The highest averages for the top procedures that Dr. John Croghan, MD treated as an internist in Chicago, IL were blood draw, lab tests, nursing home care and preventive care.

abdominal imaging	12
aspiration	39
blood draw	322
CT scan	36
diabetes management	41
diagnostic procedures	31
doctor visit	939
ear procedures	16
hospital care	70
injections	52
inpatient care	70
lab tests	313
minimally invasive procedures	31
minor procedures	31
musculoskeletal imaging	66
nursing home care	175
pelvic imaging	12
preventive care	148
spinal procedures	11
thoracic (chest) imaging	33
thyroid function tests	69
vaccines	127
X-rays	42

Average Medicare Patient Data From 2012 - 2024

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

**Gender**
Female	189
Male	125

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	192
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	130
75 to 84	109
Less than 65	0
65 to 74	15

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

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

Hypertension	48
High Cholesterol	50
Stroke	6
Ischemic Heart Disease	29
Depression	24
Chronic Kidney Disease	19
Asthma	5
Osteoporosis	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	13
Atrial Fibrillation	16
Cancer	12
Dementia	20

Education & Training

Dr. John Croghan, MD graduated from Rush Medical College in 1986. He completed residency at Loyola University Affiliated Hospitals. He is certified by the American Board of Internal Medicine, American Board of Internal Medicine and has a state license in Illinois.

Medical School: Rush Medical College (1986)

Residency: Loyola University Affiliated Hospitals (1989)

Board Certification: American Board of Internal Medicine, American Board of Internal Medicine (1989)

Licensed In: Illinois

Ratings & Reviews

Dr. John Croghan, MD has an average of 1.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. John Croghan, MD from all over the web to help you find the right in Chicago, IL.

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General Payments

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

**Payments by Company**
Pfizer Inc.	$730 VIAGRA $202	XELJANZ $115	CELEBREX $106	ELIQUIS $89	LYRICA $76	Other $143
Boehringer Ingelheim Pharmaceuticals, Inc.	$340 Pradaxa $77	JARDIANCE $77	COMBIVENT RESPIMAT $60	SPIRIVA RESPIMAT $21	STIOLTO $18	Other $87
AstraZeneca Pharmaceuticals LP	$331 CRESTOR $107	SYMBICORT $106	FARXIGA $86	BRILINTA $17	MOVANTIK $15
FOREST PHARMACEUTICALS, INC.	$327 DALIRESP $113	NAMENDA XR $67	VIIBRYD $56	LINZESS $50	BYSTOLIC $25	Other $15
AbbVie, Inc.	$321 Humira $148	Synthroid $66	Androgel $50	Creon $38	$19
Other	$2,445 Prolia $197	Belviq $152	ELIQUIS $145	EXELON PATCH $139	Brintellix $104	Other $1,708

**Types of Payments**
Food and Beverage	$4,404
Education	$89

Biography

Dr. John Croghan specializes in adult rheumatology and practices in Winnetka, IL. After completing medical school at Rush Medical College, he performed his residency at a hospital affiliated with Loyola University. Dr. Croghan is affiliated with Endeavor Health.