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Home > IL Providers > Internists & Internal Medicine Doctors

Dr. Susan M. Thomas, MD

(275 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

University of Southern California (USC), Keck School of Medicine (1999)

225 N. Milwaukee Avenue
Vernon Hills, IL 60061

(847) 941-7600

Dr. Susan M. Thomas, MD is an internist in Vernon Hills, IL specializing in internal medicine (adult medicine). She graduated from University of Southern California (USC), Keck School of Medicine in 1999 and has 27 years of experience. Dr. Susan M. Thomas, MD is affiliated with Endeavor Health.

Office Locations

225 N. Milwaukee Avenue
Vernon Hills, IL 60061

(847) 941-7600

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327 Gundersen Drive
Carol Stream, IL 60188

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Noteworthy Medicare Patient Procedures Performed by Dr. Susan M. Thomas, MD in 2024

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

Top 25%

By Volume:

Welcome to Medicare visit

In 2012, Dr. Susan M. Thomas, MD performed more Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 75% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	474

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	541

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	54
Female	241

**Ethnicity**
Non-Hispanic White	249
Black	14
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	180
From 75 to 84	56
85 and over	30
Less than 65	29

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2013

Hypertension	57
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	22
Depression	18
Chronic Kidney Disease	12
Asthma	7
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	12
Diabetes	19
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	523

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	57
Female	224

**Ethnicity**
Non-Hispanic White	231
Black	0
Hispanic	16
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	65
85 and over	25
Less than 65	29

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2014

Hypertension	61
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	19
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	482

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	126
Female	476

**Ethnicity**
Non-Hispanic White	500
Black	0
Hispanic	34
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	356
From 75 to 84	110
85 and over	70
Less than 65	66

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2015

Hypertension	61
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	19
Depression	21
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	19
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	299

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	54
Female	223

**Ethnicity**
Non-Hispanic White	233
Black	0
Hispanic	15
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	65
85 and over	23
Less than 65	24

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2016

Hypertension	58
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	17
Depression	18
Chronic Kidney Disease	16
Asthma	11
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2017 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	320
preventive care	16

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	68
Female	245

**Ethnicity**
Non-Hispanic White	266
Black	15
Hispanic	0
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	85
85 and over	31
Less than 65	27

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2017

Hypertension	56
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	23
Depression	20
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	12
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2018 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	350
preventive care	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	76
Female	274

**Ethnicity**
Non-Hispanic White	293
Black	0
Hispanic	16
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	92
85 and over	42
Less than 65	28

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2018

Hypertension	57
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	22
Depression	19
Chronic Kidney Disease	20
Asthma	5
Osteoperosis	14
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2019 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	315
preventive care	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	61
Female	281

**Ethnicity**
Non-Hispanic White	287
Black	0
Hispanic	0
Asian	16
Other	17
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	85
85 and over	31
Less than 65	28

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2019

Hypertension	57
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	0
Depression	25
Chronic Kidney Disease	17
Asthma	4
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2020 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	266
preventive care	13

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	57
Female	267

**Ethnicity**
Non-Hispanic White	273
Black	0
Hispanic	0
Asian	18
Other	16
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	87
85 and over	28
Less than 65	21

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2020

Hypertension	52
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	18
Depression	21
Chronic Kidney Disease	19
Asthma	5
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	25
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	204

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	40
Female	201

**Ethnicity**
Non-Hispanic White	199
Black	0
Hispanic	0
Asian	15
Other	15
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	73
85 and over	19
Less than 65	17

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2021

Hypertension	54
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	18
Depression	26
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	25
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2022 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	155
preventive care	16

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	42
Female	182

**Ethnicity**
Non-Hispanic White	192
Black	0
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	76
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2022

Hypertension	69
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	16
Depression	21
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	22
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	25
Dementia	6
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2023 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	285
preventive care	13

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	65
Female	267

**Ethnicity**
Non-Hispanic White	286
Black	0
Hispanic	0
Asian	15
Other	17
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	103
85 and over	31
Less than 65	16

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2023

Hypertension	64
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	15
Depression	21
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	27
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL during 2024 were preventive care.

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

doctor visit	221
preventive care	21

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Male	62
Female	285

**Ethnicity**
Non-Hispanic White	305
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	122
85 and over	27
Less than 65	16

Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD in 2024

Hypertension	63
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	16
Depression	23
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	27
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Susan M. Thomas, MD for Medicare patients.

The highest averages for the top procedures that Dr. Susan M. Thomas, MD treated as an internist in Vernon Hills, IL were preventive care.

doctor visit	341
preventive care	15

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Susan M. Thomas, MD.

**Gender**
Female	243
Male	58

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	15
Non-Hispanic White	254
Hispanic	6
Native American / Alaskan Native	0
Other	5

**Age**
85 and over	27
75 to 84	78
Less than 65	23
65 to 74	170

Average of Total of Conditions of Medicare patients treated by Dr. Susan M. Thomas, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Susan M. Thomas, MD treated were high cholesterol, hypertension, diabetes and depression.

Hypertension	54
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	16
Depression	19
Chronic Kidney Disease	16
Asthma	5
Osteoporosis	14
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Atrial Fibrillation	8
Cancer	9
Dementia	5

Education & Training

Dr. Susan M. Thomas, MD graduated from University of Southern California (USC), Keck School of Medicine in 1999. She completed residency at Northwestern University Affiliated Hospitals. She is certified by the American Board of Internal Medicine and has a state license in Illinois.

Medical School: University of Southern California (USC), Keck School of Medicine (1999)

Residency: Northwestern University Affiliated Hospitals (2002)

Board Certification: American Board of Internal Medicine (2002)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Susan M. Thomas, MD is associated with these hospitals and organizations:

Endeavor Health

Ratings & Reviews

Dr. Susan M. Thomas, MD has an exceptional overall rating with an average of 4.74 out of 5 stars based on 275 ratings. We collect ratings and reviews of Dr. Susan M. Thomas, MD from all over the web to help you find the right in Vernon Hills, IL.

4.74

Overall Rating

(275 Ratings)

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General Payments

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

**Payments by Company**
E.R. Squibb & Sons, L.L.C.	$60 OPDIVO $60
Philips Electronics North America Corporation	$37 (7999) SRC Und $37
Amarin Pharma Inc.	$31 Vascepa $31
EISAI INC.	$30 Belviq $30
AstraZeneca Pharmaceuticals LP	$19 BRILINTA $19
Other	$14 WaveOne $14

**Types of Payments**
Food and Beverage	$130
Education	$61

Biography

Dr. Susan Thomas studied medicine at the University of Southern California (USC), Keck School of Medicine. Her residency was performed at a hospital affiliated with Northwestern University. Patients gave her an average rating of 4.5 stars (out of 5). Dr. Thomas is affiliated with Endeavor Health.