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Home > MI Providers > Dermatopathologists

Dr. Simon John Warren, MD

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Specializes in: Dermatopathology

1500 E Medical Center Drive
Ann Arbor, MI 48109

(734) 936-4000

Dr. Simon John Warren, MD is a dermatopathologist in Ann Arbor, MI specializing in dermatopathology. Dr. Simon John Warren, MD is affiliated with University of Michigan Health.

Office Locations

University of Michigan Health

1500 E Medical Center Drive
Ann Arbor, MI 48109

(734) 936-4000

(734) 936-7361

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Noteworthy Medicare Patient Procedures Performed by Dr. Simon John Warren, MD in 2023

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

Top 25%

By Affordability:

immunohistochemistry test

lab tests

second opinions

slide consultation

In 2012, Dr. Simon John Warren, MD had a list price for immunohistochemistry (IHC) test, lab tests, second opinions, and slide consultation that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Michigan. 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. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2012 were lab tests and second opinions.

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

lab tests	614
second opinions	84

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2013 were lab tests and second opinions.

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

lab tests	882
second opinions	113

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	987
Female	987

**Ethnicity**
Non-Hispanic White	1847
Black	85
Hispanic	0
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	845
From 75 to 84	570
85 and over	277
Less than 65	282

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

Hypertension	65
High Cholesterol	54
Stroke	5
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2014 were lab tests and second opinions.

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

lab tests	493
second opinions	91

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	957
Female	968

**Ethnicity**
Non-Hispanic White	1792
Black	83
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	828
From 75 to 84	582
85 and over	254
Less than 65	261

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

Hypertension	65
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	31
Depression	20
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2015 were lab tests and second opinions.

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

lab tests	297
second opinions	77

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	1850
Female	1790

**Ethnicity**
Non-Hispanic White	3430
Black	120
Hispanic	0
Asian	0
Other	48
Native American	0

**Age**
From 65 to 74	1576
From 75 to 84	1104
85 and over	504
Less than 65	456

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

Hypertension	67
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	15
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2016 were lab tests and second opinions.

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

lab tests	311
second opinions	65

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	950
Female	935

**Ethnicity**
Non-Hispanic White	1749
Black	82
Hispanic	0
Asian	0
Other	32
Native American	0

**Age**
From 65 to 74	842
From 75 to 84	555
85 and over	268
Less than 65	220

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

Hypertension	66
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	31
Asthma	15
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2017 were lab tests and second opinions.

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

lab tests	289
second opinions	74

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	767
Female	729

**Ethnicity**
Non-Hispanic White	1396
Black	40
Hispanic	0
Asian	0
Other	36
Native American	0

**Age**
From 65 to 74	682
From 75 to 84	467
85 and over	202
Less than 65	145

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

Hypertension	66
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2018 were lab tests and second opinions.

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

lab tests	210
second opinions	30

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	588
Female	586

**Ethnicity**
Non-Hispanic White	1088
Black	39
Hispanic	0
Asian	0
Other	34
Native American	0

**Age**
From 65 to 74	557
From 75 to 84	369
85 and over	141
Less than 65	107

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

Hypertension	67
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	32
Depression	23
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2019 were lab tests and second opinions.

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

lab tests	235
second opinions	43

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	757
Female	677

**Ethnicity**
Non-Hispanic White	1328
Black	38
Hispanic	0
Asian	0
Other	47
Native American	0

**Age**
From 65 to 74	661
From 75 to 84	481
85 and over	176
Less than 65	116

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

Hypertension	66
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	26
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2020 were lab tests and second opinions.

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

lab tests	158
second opinions	58

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	535
Female	483

**Ethnicity**
Non-Hispanic White	937
Black	31
Hispanic	0
Asian	0
Other	39
Native American	0

**Age**
From 65 to 74	506
From 75 to 84	306
85 and over	128
Less than 65	78

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

Hypertension	64
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	35
Asthma	5
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2021 were lab tests and second opinions.

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

lab tests	159
second opinions	53

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	493
Female	534

**Ethnicity**
Non-Hispanic White	958
Black	0
Hispanic	0
Asian	0
Other	35
Native American	0

**Age**
From 65 to 74	507
From 75 to 84	324
85 and over	131
Less than 65	65

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

Hypertension	65
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	33
Depression	24
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI during 2022 were lab tests and second opinions.

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

lab tests	152
second opinions	24

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	440
Female	433

**Ethnicity**
Non-Hispanic White	812
Black	0
Hispanic	0
Asian	0
Other	37
Native American	0

**Age**
From 65 to 74	428
From 75 to 84	295
85 and over	93
Less than 65	57

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

Hypertension	73
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	25
Depression	23
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	4
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

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

The highest averages for the top procedures that Dr. Simon John Warren, MD treated as a dermatopathologist in Ann Arbor, MI were lab tests and second opinions.

lab tests	345
second opinions	64

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Simon John Warren, MD.

**Gender**
Male	756
Female	738

**Ethnicity**
Black / African American	47
Asian / Pacific Islander	0
Non-Hispanic White	1394
Native American / Alaskan Native	0
Hispanic	0
Other	32

**Age**
75 to 84	459
85 and over	197
Less than 65	162
65 to 74	675

Average of Total of Conditions of Medicare patients treated by Dr. Simon John Warren, MD From 2012 - 2022

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

Hypertension	60
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	27
Asthma	7
Osteoporosis	6
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Atrial Fibrillation	10
Dementia	6
Cancer	10

Education & Training

He completed residency at Medical College of Wisconsin Affiliated Hospitals. He is certified by the Board Certification: Dermatopathology and has a state license in Indiana.

Residency: Medical College of Wisconsin Affiliated Hospitals (1998)

Board Certification: Board Certification: Dermatopathology

Licensed In: Indiana

Affiliations & Hospitals

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

University of Michigan Health

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General Payments

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

**Payments by Company**
Eli Lilly and Company	$11,920 $11,920
Agilent Technologies, Inc.	$134 Omnis $134

**Types of Payments**
Consulting Fee	$11,920
Food and Beverage	$134

Biography

Dr. Simon Warren is a specialist in dermatopathology. Dr. Warren is professionally affiliated with the University of Michigan Health. For his residency, Dr. Warren trained at a hospital affiliated with Medical College of Wisconsin.