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Dr. Gregory V. Warren, MD

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Specializes in: Adult Nephrology

Mysore Medical College

7793 W Appleton Avenue
Milwaukee, WI 53222

(414) 393-9810

Dr. Gregory V. Warren, MD is a nephrologist in Milwaukee, WI specializing in adult nephrology. He graduated from Mysore Medical College. Dr. Gregory V. Warren, MD is affiliated with Advocate Health Care.

Office Locations

Advocate Health Care

3120 S 27th Street
Milwaukee, WI 53215

(414) 672-8282

(414) 672-8284

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Advocate Health Care

7793 W Appleton Avenue
Milwaukee, WI 53222

(414) 393-9810

(414) 393-9817

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2012 were hospital care, inpatient care, dialysis and lab tests.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

blood draw	74
dialysis	570
doctor visit	724
hemofiltration	132
hospital care	1820
inpatient care	1820
lab tests	206
skin testing	15
tuberculosis (TB) testing	15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2013 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

blood draw	40
dialysis	695
doctor visit	642
hemofiltration	184
hospital care	2047
inpatient care	2047
lab tests	117

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	536
Female	445

**Ethnicity**
Non-Hispanic White	762
Black	126
Hispanic	58
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	299
From 75 to 84	298
85 and over	172
Less than 65	212

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	69
Depression	33
Chronic Kidney Disease	75
Asthma	16
Osteoperosis	11
Atrial Fibrilation	28
Heart Failure	62
Chronic Obstructive Pulmonary Disease	32
Diabetes	61
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2014 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	981
doctor visit	606
hemofiltration	132
hospital care	2446
inpatient care	2446

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	462
Female	420

**Ethnicity**
Non-Hispanic White	636
Black	142
Hispanic	66
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	288
From 75 to 84	270
85 and over	121
Less than 65	203

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	67
Depression	34
Chronic Kidney Disease	75
Asthma	16
Osteoperosis	13
Atrial Fibrilation	29
Heart Failure	62
Chronic Obstructive Pulmonary Disease	33
Diabetes	62
Dementia	19
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2015 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	891
doctor visit	557
hemofiltration	200
hospital care	2192
inpatient care	2192

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	862
Female	764

**Ethnicity**
Non-Hispanic White	1182
Black	266
Hispanic	130
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	590
From 75 to 84	460
85 and over	206
Less than 65	370

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2015

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	67
Depression	36
Chronic Kidney Disease	75
Asthma	25
Osteoperosis	13
Atrial Fibrilation	27
Heart Failure	61
Chronic Obstructive Pulmonary Disease	33
Diabetes	59
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2016 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	724
doctor visit	490
hemofiltration	168
hospital care	1758
inpatient care	1758

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	420
Female	374

**Ethnicity**
Non-Hispanic White	544
Black	133
Hispanic	81
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	265
From 75 to 84	232
85 and over	107
Less than 65	190

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	68
Depression	36
Chronic Kidney Disease	75
Asthma	36
Osteoperosis	10
Atrial Fibrilation	26
Heart Failure	61
Chronic Obstructive Pulmonary Disease	33
Diabetes	62
Dementia	22
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2017 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	866
doctor visit	444
hemofiltration	188
hospital care	2409
inpatient care	2409

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	471
Female	398

**Ethnicity**
Non-Hispanic White	597
Black	150
Hispanic	78
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	320
From 75 to 84	235
85 and over	108
Less than 65	206

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	70
Depression	40
Chronic Kidney Disease	75
Asthma	14
Osteoperosis	12
Atrial Fibrilation	30
Heart Failure	62
Chronic Obstructive Pulmonary Disease	33
Diabetes	63
Dementia	24
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2018 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	685
doctor visit	448
hemofiltration	151
hospital care	1950
inpatient care	1950

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	424
Female	366

**Ethnicity**
Non-Hispanic White	544
Black	131
Hispanic	76
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	269
From 75 to 84	209
85 and over	114
Less than 65	198

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	69
Depression	40
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	10
Atrial Fibrilation	28
Heart Failure	60
Chronic Obstructive Pulmonary Disease	31
Diabetes	63
Dementia	25
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2019 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	831
doctor visit	455
hemofiltration	133
hospital care	2308
inpatient care	2308

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	460
Female	353

**Ethnicity**
Non-Hispanic White	593
Black	98
Hispanic	81
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	287
From 75 to 84	238
85 and over	106
Less than 65	182

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	73
Depression	39
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	12
Atrial Fibrilation	31
Heart Failure	64
Chronic Obstructive Pulmonary Disease	31
Diabetes	61
Dementia	28
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2020 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	809
doctor visit	429
hemofiltration	155
hospital care	1575
inpatient care	1575

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	422
Female	331

**Ethnicity**
Non-Hispanic White	553
Black	88
Hispanic	72
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	276
From 75 to 84	212
85 and over	110
Less than 65	155

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	72
Depression	38
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	13
Atrial Fibrilation	29
Heart Failure	64
Chronic Obstructive Pulmonary Disease	28
Diabetes	64
Dementia	25
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2021 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	676
doctor visit	538
hemofiltration	144
hospital care	1455
inpatient care	1455

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	421
Female	322

**Ethnicity**
Non-Hispanic White	574
Black	72
Hispanic	57
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	210
85 and over	115
Less than 65	156

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	72
Depression	38
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	9
Atrial Fibrilation	30
Heart Failure	61
Chronic Obstructive Pulmonary Disease	27
Diabetes	63
Dementia	24
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2022 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	435
doctor visit	423
hemofiltration	56
hospital care	1093
inpatient care	1093

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	328
Female	268

**Ethnicity**
Non-Hispanic White	453
Black	58
Hispanic	51
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	165
85 and over	90
Less than 65	126

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	63
Depression	32
Chronic Kidney Disease	75
Asthma	16
Osteoperosis	13
Atrial Fibrilation	45
Heart Failure	61
Chronic Obstructive Pulmonary Disease	29
Diabetes	62
Dementia	16
Cancer	21

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2023 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

dialysis	357
doctor visit	352
hemofiltration	67
hospital care	1121
inpatient care	1121

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	290
Female	234

**Ethnicity**
Non-Hispanic White	398
Black	46
Hispanic	42
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	203
From 75 to 84	159
85 and over	65
Less than 65	97

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	63
Depression	30
Chronic Kidney Disease	75
Asthma	14
Osteoperosis	14
Atrial Fibrilation	45
Heart Failure	66
Chronic Obstructive Pulmonary Disease	34
Diabetes	61
Dementia	15
Cancer	23

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

doctor visit	98
hospital care	219
inpatient care	219

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	111
Female	84

**Ethnicity**
Non-Hispanic White	152
Black	13
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	62
85 and over	32
Less than 65	24

Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	64
Depression	27
Chronic Kidney Disease	75
Asthma	13
Osteoperosis	12
Atrial Fibrilation	48
Heart Failure	64
Chronic Obstructive Pulmonary Disease	27
Diabetes	59
Dementia	18
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Gregory V. Warren, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory V. Warren, MD treated as a nephrologist in Milwaukee, WI were hospital care, inpatient care, dialysis and lab tests.

blood draw	57
dialysis	710
doctor visit	477
hemofiltration	142
hospital care	1722
inpatient care	1722
lab tests	161
skin testing	15
tuberculosis (TB) testing	15

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Gregory V. Warren, MD.

**Gender**
Male	400
Female	335

**Ethnicity**
Black / African American	101
Asian / Pacific Islander	4
Non-Hispanic White	537
Native American / Alaskan Native	0
Hispanic	61
Other	13

**Age**
75 to 84	211
85 and over	103
Less than 65	163
65 to 74	257

Average of Total of Conditions of Medicare patients treated by Dr. Gregory V. Warren, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	69
Stroke	11
Ischemic Heart Disease	62
Depression	32
Chronic Kidney Disease	69
Asthma	15
Osteoporosis	10
Heart Failure	57
Chronic Obstructive Pulmonary Disease	28
Diabetes	56
Atrial Fibrillation	30
Dementia	19
Cancer	14

Education & Training

Dr. Gregory V. Warren, MD graduated from Mysore Medical College. He completed residency at Advocate Christ Medical Center, Oak Lawn. He is certified by the Board certifications: American Board of Internal Medicine, Nephrology and has a state license in Wisconsin.

Medical School: Mysore Medical College

Residency: Advocate Christ Medical Center, Oak Lawn

Board Certification: Board certifications: American Board of Internal Medicine, Nephrology

Licensed In: Wisconsin

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General Payments

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

**Payments by Company**
Amgen Inc.	$478 Parsabiv $372	Tavneos $106
Otsuka America Pharmaceutical, Inc.	$248 JYNARQUE $248
Janssen Pharmaceuticals, Inc	$152 INVOKANA $93	XARELTO $60
Bayer HealthCare Pharmaceuticals Inc.	$125 Kerendia $125
AstraZeneca Pharmaceuticals LP	$121 LOKELMA $121
Other	$371 Rituxan $116	(815) Thiola $99	ACTHAR $82	Nephrocheck $57	VELTASSA $16

**Types of Payments**
Food and Beverage	$1,354
Education	$140

Biography

Dr. Gregory Warren is a specialist in adult nephrology. Dr. Warren's education and training includes medical school at Mysore Medical College and residency at Advocate Christ Medical Center, Oak Lawn. His professional affiliations include Aurora Sinai Medical Center, Aurora Lakeland Medical Center, and Aurora West Allis Medical Center.