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Dr. Margaret K. Williamson, MD

Accepting New Patients
(Margaret K. Williamson, MD)

(No ratings)

Specializes in: Physician, Urgent Care and Emergency Medicine
University of Virginia School of Medicine (2007)
211 E Ontario Street Suite 200
Chicago, IL 60611

Dr. Margaret K. Williamson, MD is a physician provider in Chicago, IL specializing in physician, urgent care and emergency medicine. She graduated from University of Virginia School of Medicine in 2007 and has 19 years of experience. Dr. Margaret K. Williamson, MD is affiliated with Northwestern University Feinberg School of Medicine, Northwestern Medicine and Northwestern Memorial Hospital Emergency Department.

View Doctor's Full Profile (312) 694-7000

Office Locations

211 E Ontario Street Suite 200
Chicago, IL 60611
open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Margaret K. Williamson, MD in 2024

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

Top 25%

By Volume:

emergency room care

By Affordability:

emergency care
emergency room care

In 2012, among providers in related specialties within Illinois, Dr. Margaret K. Williamson, MD performed more emergency room (ER) care procedures for Medicare patients than 75% of them and she also had a list price for emergency care, and emergency room (ER) care that was lower than the list prices billed to Medicare by 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2012 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 624

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2013 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 607

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 230
Female 378
Ethnicity
Non-Hispanic White 329
Black 211
Hispanic 51
Asian 0
Other 0
Native American 0
Age
From 65 to 74 181
From 75 to 84 169
85 and over 123
Less than 65 135

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2013

Hypertension 75
High Cholesterol 68
Stroke 14
Ischemic Heart Disease 60
Depression 34
Chronic Kidney Disease 50
Asthma 18
Osteoperosis 13
Atrial Fibrilation 24
Heart Failure 50
Chronic Obstructive Pulmonary Disease 34
Diabetes 51
Dementia 25
Cancer 15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2014 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 520

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 218
Female 307
Ethnicity
Non-Hispanic White 282
Black 183
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 150
From 75 to 84 170
85 and over 88
Less than 65 117

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2014

Hypertension 75
High Cholesterol 66
Stroke 16
Ischemic Heart Disease 63
Depression 38
Chronic Kidney Disease 52
Asthma 17
Osteoperosis 10
Atrial Fibrilation 22
Heart Failure 49
Chronic Obstructive Pulmonary Disease 34
Diabetes 50
Dementia 29
Cancer 14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2015 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 372

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 292
Female 454
Ethnicity
Non-Hispanic White 382
Black 282
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 238
From 75 to 84 194
85 and over 142
Less than 65 172

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2015

Hypertension 75
High Cholesterol 69
Stroke 14
Ischemic Heart Disease 61
Depression 38
Chronic Kidney Disease 56
Asthma 27
Osteoperosis 9
Atrial Fibrilation 23
Heart Failure 50
Chronic Obstructive Pulmonary Disease 31
Diabetes 51
Dementia 29
Cancer 15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2016 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 412

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 177
Female 246
Ethnicity
Non-Hispanic White 220
Black 158
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 122
From 75 to 84 125
85 and over 76
Less than 65 100

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2016

Hypertension 75
High Cholesterol 72
Stroke 14
Ischemic Heart Disease 62
Depression 37
Chronic Kidney Disease 59
Asthma 39
Osteoperosis 9
Atrial Fibrilation 24
Heart Failure 51
Chronic Obstructive Pulmonary Disease 38
Diabetes 53
Dementia 31
Cancer 15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2017 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 313

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 119
Female 203
Ethnicity
Non-Hispanic White 161
Black 122
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 108
From 75 to 84 92
85 and over 70
Less than 65 52

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2017

Hypertension 75
High Cholesterol 66
Stroke 15
Ischemic Heart Disease 58
Depression 35
Chronic Kidney Disease 59
Asthma 14
Osteoperosis 9
Atrial Fibrilation 25
Heart Failure 55
Chronic Obstructive Pulmonary Disease 34
Diabetes 54
Dementia 27
Cancer 15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2018 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 324

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 128
Female 205
Ethnicity
Non-Hispanic White 181
Black 116
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 94
From 75 to 84 115
85 and over 55
Less than 65 69

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2018

Hypertension 75
High Cholesterol 70
Stroke 15
Ischemic Heart Disease 54
Depression 34
Chronic Kidney Disease 62
Asthma 13
Osteoperosis 10
Atrial Fibrilation 23
Heart Failure 55
Chronic Obstructive Pulmonary Disease 38
Diabetes 52
Dementia 31
Cancer 19

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2019 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 400

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 163
Female 240
Ethnicity
Non-Hispanic White 205
Black 142
Hispanic 42
Asian 0
Other 0
Native American 0
Age
From 65 to 74 134
From 75 to 84 114
85 and over 68
Less than 65 87

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2019

Hypertension 75
High Cholesterol 72
Stroke 12
Ischemic Heart Disease 59
Depression 33
Chronic Kidney Disease 63
Asthma 12
Osteoperosis 11
Atrial Fibrilation 24
Heart Failure 51
Chronic Obstructive Pulmonary Disease 38
Diabetes 52
Dementia 26
Cancer 13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2020 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 471

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 245
Female 248
Ethnicity
Non-Hispanic White 236
Black 182
Hispanic 48
Asian 15
Other 12
Native American 0
Age
From 65 to 74 177
From 75 to 84 135
85 and over 80
Less than 65 101

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2020

Hypertension 75
High Cholesterol 68
Stroke 12
Ischemic Heart Disease 57
Depression 32
Chronic Kidney Disease 58
Asthma 11
Osteoperosis 10
Atrial Fibrilation 24
Heart Failure 47
Chronic Obstructive Pulmonary Disease 26
Diabetes 45
Dementia 27
Cancer 15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2021 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 334

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 139
Female 203
Ethnicity
Non-Hispanic White 181
Black 102
Hispanic 25
Asian 20
Other 14
Native American 0
Age
From 65 to 74 109
From 75 to 84 98
85 and over 68
Less than 65 67

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2021

Hypertension 75
High Cholesterol 56
Stroke 11
Ischemic Heart Disease 49
Depression 32
Chronic Kidney Disease 52
Asthma 15
Osteoperosis 15
Atrial Fibrilation 22
Heart Failure 38
Chronic Obstructive Pulmonary Disease 19
Diabetes 34
Dementia 22
Cancer 20

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2022 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 480

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 221
Female 269
Ethnicity
Non-Hispanic White 248
Black 161
Hispanic 41
Asian 21
Other 19
Native American 0
Age
From 65 to 74 163
From 75 to 84 143
85 and over 81
Less than 65 103

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 18
Ischemic Heart Disease 44
Depression 34
Chronic Kidney Disease 39
Asthma 16
Osteoperosis 21
Atrial Fibrilation 25
Heart Failure 38
Chronic Obstructive Pulmonary Disease 20
Diabetes 39
Dementia 18
Cancer 19

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2023 were emergency care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 345

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 150
Female 209
Ethnicity
Non-Hispanic White 187
Black 107
Hispanic 43
Asian 0
Other 0
Native American 0
Age
From 65 to 74 137
From 75 to 84 90
85 and over 70
Less than 65 62

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 18
Ischemic Heart Disease 48
Depression 36
Chronic Kidney Disease 33
Asthma 18
Osteoperosis 20
Atrial Fibrilation 28
Heart Failure 36
Chronic Obstructive Pulmonary Disease 26
Diabetes 40
Dementia 19
Cancer 21

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL during 2024 were emergency care, hospital care and inpatient care.

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

emergency care 396
hospital care 19
inpatient care 19

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Male 186
Female 270
Ethnicity
Non-Hispanic White 251
Black 142
Hispanic 31
Asian 18
Other 14
Native American 0
Age
From 65 to 74 163
From 75 to 84 137
85 and over 73
Less than 65 83

Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD in 2024

Hypertension 75
High Cholesterol 75
Stroke 21
Ischemic Heart Disease 41
Depression 29
Chronic Kidney Disease 41
Asthma 17
Osteoperosis 18
Atrial Fibrilation 27
Heart Failure 38
Chronic Obstructive Pulmonary Disease 20
Diabetes 38
Dementia 16
Cancer 23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Margaret K. Williamson, MD for Medicare patients.

The highest averages for the top procedures that Dr. Margaret K. Williamson, MD treated as a physician provider in Chicago, IL were emergency care, hospital care and inpatient care.

emergency care 430
hospital care 19
inpatient care 19

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Margaret K. Williamson, MD.

Gender
Female 248
Male 174
Ethnicity
Black / African American 146
Asian / Pacific Islander 5
Non-Hispanic White 220
Native American / Alaskan Native 0
Hispanic 21
Other 4
Age
85 and over 76
75 to 84 121
Less than 65 88
65 to 74 136

Average of Total of Conditions of Medicare patients treated by Dr. Margaret K. Williamson, MD From 2012 - 2024

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

Hypertension 69
High Cholesterol 64
Stroke 13
Ischemic Heart Disease 50
Depression 31
Chronic Kidney Disease 48
Asthma 16
Osteoporosis 11
Heart Failure 42
Chronic Obstructive Pulmonary Disease 27
Diabetes 43
Atrial Fibrillation 22
Dementia 23
Cancer 15

Education & Training

Dr. Margaret K. Williamson, MD graduated from University of Virginia School of Medicine in 2007. She completed residency at McGaw Medical Center of Northwestern University. She is certified by the American Board of Emergency Medicine - Emergency Medicine (Certified) and has a state license in Illinois.

Medical School: University of Virginia School of Medicine (2007)

Residency: McGaw Medical Center of Northwestern University (2011)

Board Certification: American Board of Emergency Medicine - Emergency Medicine (Certified)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Margaret K. Williamson, MD is associated with these hospitals and organizations:

Northwestern University Feinberg School of Medicine
Northwestern Medicine
Northwestern Memorial Hospital Emergency Department

Ratings & Reviews

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General Payments

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

Payments by Company
Baxter Healthcare $118 No Related Product
$118
AstraZeneca Pharmaceuticals LP $118 BRILINTA
$118
E.R. Squibb & Sons, L.L.C. $100 ELIQUIS
$100
Janssen Biotech, Inc. $72 Symtuza
$48 		PREZCOBIX
$24
Salix Pharmaceuticals, a division of Bausch Health US, LLC $18 XIFAXAN
$18
Types of Payments
Food and Beverage $426

Biography

Dr. Margaret Williamson is a specialist in urgent care, emergency medicine, and physician. She works in Oak Lawn, IL and Chicago, IL. After completing medical school at the University of Virginia School of Medicine, Dr. Williamson performed her residency at McGaw Medical Center of Northwestern University. She has received distinctions including Emergency Medicine Foundation Award, Advocate Christ Medical Center; Top Performance in Patient Satisfaction, Advocate Medical Group; and Physician Excellence Award for Patient Communication, Advocate Christ Medical Center. Her professional affiliations include Northwestern University Feinberg School of Medicine and Northwestern Memorial Hospital. According to Yext, new patients are welcome to contact Dr. Williamson's office in Chicago, IL.

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