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Dr. John C. Maynard, MD

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Specializes in: Adult Nephrology

University of Illinois College of Medicine at Chicago

1401 E State Street
Rockford, IL 61104

(779) 696-4400

Dr. John C. Maynard, MD is a nephrologist in Rockford, IL specializing in adult nephrology. He graduated from University of Illinois College of Medicine at Chicago. Dr. John C. Maynard, MD is affiliated with UW Health.

Office Locations

UW Health

1401 E State Street
Rockford, IL 61104

(779) 696-4400

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612 Roxbury Road
Rockford, IL 61107

(815) 227-8300

(815) 227-8301

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Noteworthy Medicare Patient Procedures Performed by Dr. John C. Maynard, MD in 2023

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

Top 5%

By Affordability:

retroperitoneal ultrasound

In 2023, Dr. John C. Maynard, MD had a list price for retroperitoneal ultrasound that was lower than the list prices billed to Medicare by 95% 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.

Top 25%

By Affordability:

lab tests

urinalysis

urine tests

In 2012, Dr. John C. Maynard, MD had a list price for lab tests, urinalysis, and urine tests 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 C. Maynard, MD treated as a nephrologist in Rockford, IL during 2012 were vascular procedures, inpatient care, hospital care and dialysis access procedures.

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

angioplasty	210
blood draw	144
catheterization	15
device removal	38
dialysis	47
dialysis access procedures	268
doctor visit	1380
hospital care	373
inpatient care	373
lab tests	99
minimally invasive procedures	67
thrombectomy (blood clot removal)	16
vascular procedures	395
X-rays	182

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2013 were vascular procedures, dialysis access procedures, inpatient care and hospital care.

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

angioplasty	253
blood draw	90
catheterization	12
device removal	44
dialysis	40
dialysis access procedures	303
doctor visit	916
hospital care	302
inpatient care	302
lab tests	57
minimally invasive procedures	53
thrombectomy (blood clot removal)	26
vascular procedures	433
X-rays	214

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	668
Female	669

**Ethnicity**
Non-Hispanic White	1034
Black	212
Hispanic	66
Asian	13
Other	12
Native American	0

**Age**
From 65 to 74	436
From 75 to 84	408
85 and over	205
Less than 65	288

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

Hypertension	75
High Cholesterol	69
Stroke	8
Ischemic Heart Disease	57
Depression	23
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	7
Atrial Fibrilation	20
Heart Failure	50
Chronic Obstructive Pulmonary Disease	24
Diabetes	60
Dementia	12
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2014 were inpatient care, hospital care, vascular procedures and dialysis access procedures.

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

angioplasty	189
blood draw	72
catheterization	12
device removal	28
dialysis	42
dialysis access procedures	247
doctor visit	813
hospital care	401
inpatient care	401
lab tests	58
minimally invasive procedures	42
thrombectomy (blood clot removal)	23
vascular procedures	340
X-rays	174

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	605
Female	593

**Ethnicity**
Non-Hispanic White	902
Black	208
Hispanic	68
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	368
From 75 to 84	355
85 and over	189
Less than 65	286

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

Hypertension	75
High Cholesterol	66
Stroke	7
Ischemic Heart Disease	55
Depression	24
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	7
Atrial Fibrilation	20
Heart Failure	49
Chronic Obstructive Pulmonary Disease	26
Diabetes	59
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2015 were vascular procedures, hospital care, inpatient care and dialysis access procedures.

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

angioplasty	225
blood draw	16
device removal	29
dialysis	38
dialysis access procedures	271
doctor visit	451
hospital care	367
inpatient care	367
lab tests	49
minimally invasive procedures	16
thrombectomy (blood clot removal)	16
vascular procedures	374
X-rays	205

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	948
Female	876

**Ethnicity**
Non-Hispanic White	1334
Black	326
Hispanic	120
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	604
From 75 to 84	508
85 and over	252
Less than 65	460

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

Hypertension	75
High Cholesterol	63
Stroke	9
Ischemic Heart Disease	58
Depression	26
Chronic Kidney Disease	75
Asthma	19
Osteoperosis	6
Atrial Fibrilation	18
Heart Failure	49
Chronic Obstructive Pulmonary Disease	26
Diabetes	59
Dementia	13
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2016 were hospital care, inpatient care, vascular procedures and dialysis access procedures.

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

angioplasty	236
blood draw	18
device removal	28
dialysis	55
dialysis access procedures	307
doctor visit	485
hospital care	458
inpatient care	458
lab tests	41
minimally invasive procedures	28
thrombectomy (blood clot removal)	28
vascular procedures	412
X-rays	232

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	515
Female	454

**Ethnicity**
Non-Hispanic White	721
Black	151
Hispanic	73
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	304
From 75 to 84	268
85 and over	145
Less than 65	252

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

Hypertension	75
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	56
Depression	24
Chronic Kidney Disease	75
Asthma	30
Osteoperosis	6
Atrial Fibrilation	17
Heart Failure	50
Chronic Obstructive Pulmonary Disease	27
Diabetes	60
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2017 were hospital care, inpatient care, vascular procedures and device removal.

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

blood draw	16
device removal	27
dialysis	24
doctor visit	589
hospital care	304
inpatient care	304
lab tests	26
vascular procedures	48

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	520
Female	479

**Ethnicity**
Non-Hispanic White	760
Black	154
Hispanic	59
Asian	12
Other	14
Native American	0

**Age**
From 65 to 74	338
From 75 to 84	291
85 and over	124
Less than 65	246

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

Hypertension	75
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	55
Depression	26
Chronic Kidney Disease	75
Asthma	9
Osteoperosis	6
Atrial Fibrilation	20
Heart Failure	52
Chronic Obstructive Pulmonary Disease	26
Diabetes	58
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2018 were hospital care, inpatient care, dialysis and device removal.

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

blood draw	23
device removal	29
dialysis	41
doctor visit	684
hospital care	387
inpatient care	387
lab tests	21
vascular procedures	20

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	535
Female	542

**Ethnicity**
Non-Hispanic White	814
Black	166
Hispanic	68
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	362
From 75 to 84	332
85 and over	135
Less than 65	248

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

Hypertension	75
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	53
Depression	27
Chronic Kidney Disease	75
Asthma	7
Osteoperosis	7
Atrial Fibrilation	19
Heart Failure	51
Chronic Obstructive Pulmonary Disease	26
Diabetes	58
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2019 were hospital care, inpatient care, dialysis and device removal.

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

device removal	24
dialysis	30
doctor visit	550
hospital care	583
inpatient care	583

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	489
Female	473

**Ethnicity**
Non-Hispanic White	728
Black	137
Hispanic	69
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	320
85 and over	140
Less than 65	212

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

Hypertension	75
High Cholesterol	0
Stroke	8
Ischemic Heart Disease	54
Depression	30
Chronic Kidney Disease	75
Asthma	9
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	51
Chronic Obstructive Pulmonary Disease	25
Diabetes	62
Dementia	14
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2020 were hospital care, inpatient care, lab tests and dialysis.

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

device removal	20
dialysis	24
doctor visit	476
hospital care	560
inpatient care	560
lab tests	33

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	485
Female	468

**Ethnicity**
Non-Hispanic White	734
Black	122
Hispanic	69
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	288
From 75 to 84	308
85 and over	135
Less than 65	222

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

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	54
Depression	31
Chronic Kidney Disease	75
Asthma	8
Osteoperosis	7
Atrial Fibrilation	21
Heart Failure	52
Chronic Obstructive Pulmonary Disease	25
Diabetes	57
Dementia	14
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2021 were hospital care, inpatient care, lab tests and device removal.

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

catheterization	14
device removal	22
doctor visit	609
hospital care	478
inpatient care	478
lab tests	32

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	460
Female	419

**Ethnicity**
Non-Hispanic White	689
Black	107
Hispanic	56
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	295
From 75 to 84	260
85 and over	138
Less than 65	186

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

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	56
Depression	30
Chronic Kidney Disease	75
Asthma	8
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	52
Chronic Obstructive Pulmonary Disease	25
Diabetes	56
Dementia	16
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2022 were hospital care, inpatient care, ultrasound (sonogram) and lab tests.

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

abdominal imaging	21
device removal	18
doctor visit	433
hospital care	515
inpatient care	515
lab tests	29
ultrasound (sonogram)	32
vascular procedures	11

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	383
Female	346

**Ethnicity**
Non-Hispanic White	579
Black	76
Hispanic	51
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	248
From 75 to 84	226
85 and over	124
Less than 65	131

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

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	50
Depression	27
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	13
Atrial Fibrilation	34
Heart Failure	49
Chronic Obstructive Pulmonary Disease	28
Diabetes	57
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL during 2023 were hospital care, inpatient care, chronic care and ultrasound (sonogram).

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

abdominal imaging	14
chronic care	85
doctor visit	404
hospital care	444
inpatient care	444
lab tests	13
ultrasound (sonogram)	14

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	306
Female	342

**Ethnicity**
Non-Hispanic White	531
Black	62
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	227
85 and over	111
Less than 65	104

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

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	49
Depression	30
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	16
Atrial Fibrilation	35
Heart Failure	50
Chronic Obstructive Pulmonary Disease	31
Diabetes	58
Dementia	11
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

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

The highest averages for the top procedures that Dr. John C. Maynard, MD treated as a nephrologist in Rockford, IL were inpatient care, hospital care, dialysis access procedures and vascular procedures.

abdominal imaging	17
angioplasty	222
blood draw	54
catheterization	13
chronic care	85
device removal	27
dialysis	37
dialysis access procedures	279
doctor visit	649
hospital care	431
inpatient care	431
lab tests	41
minimally invasive procedures	41
thrombectomy (blood clot removal)	21
ultrasound (sonogram)	23
vascular procedures	254
X-rays	201

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John C. Maynard, MD.

**Gender**
Male	492
Female	471

**Ethnicity**
Black / African American	143
Asian / Pacific Islander	3
Non-Hispanic White	735
Hispanic	61
Native American / Alaskan Native	0
Other	5

**Age**
75 to 84	291
85 and over	141
Less than 65	219
65 to 74	311

Average of Total of Conditions of Medicare patients treated by Dr. John C. Maynard, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	49
Depression	24
Chronic Kidney Disease	68
Asthma	10
Osteoporosis	7
Heart Failure	46
Chronic Obstructive Pulmonary Disease	24
Diabetes	53
Atrial Fibrillation	20
Cancer	9
Dementia	11

Education & Training

Dr. John C. Maynard, MD graduated from University of Illinois College of Medicine at Chicago. He is certified by the Internal Medicine and has a state license in Illinois.

Medical School: University of Illinois College of Medicine at Chicago

Board Certification: Internal Medicine

Licensed In: Illinois

Affiliations & Hospitals

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

UW Health

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General Payments

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

**Payments by Company**
Baxter Healthcare	$1,734 Renal - CRRT $1,551	Renal - Non Product Related $111	Renal - PD $72
AstraZeneca Pharmaceuticals LP	$224 FARXIGA $224
Astute Medical, Inc.	$91 Nephrocheck $91

**Types of Payments**
Food and Beverage	$1,026
Travel and Lodging	$1,016
Gift	$7

Biography

Dr. John Maynard's specialty is adult nephrology. He studied medicine at the University of Illinois College of Medicine at Chicago. He is professionally affiliated with UW Health.