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Dr. Colleen Ann Keegan, MD, DO

Accepting New Patients
(Colleen A. Keegan, DO)
Specializes in: Physician and Dermatology (Skin Disorders)
Midwestern University Chicago College of Osteopathic Medicine (1986)
Professional interests include: skin issues, cosmetic skin treatment
2900 Foxfield Road Suite 101
St Charles, IL 60174

Dr. Colleen Ann Keegan, MD, DO is a physician provider in St Charles, IL specializing in physician and dermatology (skin disorders). She graduated from Midwestern University Chicago College of Osteopathic Medicine in 1986 and has 40 years of experience. Dr. Colleen Ann Keegan, MD, DO is affiliated with Northwestern Medicine and Northwestern Medicine Regional Medical Group.

View Doctor's Full Profile (630) 315-6500

Office Locations

2900 Foxfield Road Suite 101
St Charles, IL 60174
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636 Raymond Drive Suite 201
Naperville, IL 60563
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5201 Willow Springs Road
La Grange, IL 60525
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Some issues Dr. Colleen Ann Keegan, MD, DO can help you with:

Skin Issues

The skin is the largest organ in the body, protecting and covering the more sensitive inner organs. Considering its size and that it is constantly exposed to the elements, the skin is usually relatively problem-free. However that doesn't mean that issues don't come up from time to time that might need the help of a professional. The most common skin issues that people seek medical help with are cosmetic issues, acne, eczema, dermatitis, psoriasis, and skin growths.

Professional cosmetic skin treatments exist to treat wrinkles, scars, dark spots, remove excess hair, tone and tighten skin, and otherwise improve the appearance of the skin. They may use lasers, light therapy, chemical peels, microdermabrasion, or many other forms of skin treatment.

Acne occurs when hair follicles become clogged with oil and dead skin cells, most commonly on the face or back. The clogged follicles can then become infected and inflamed. Treatments include antibiotics, anti-inflammatories, and retinoid creams.

Eczema is dry, sensitive skin that causes an itchy red rash, often in response to specific triggers. It is common in childhood but can sometimes last into adulthood. The main treatment involves keeping skin well moisturized.

Dermatitis is the medical name for any kind of skin inflammation or rash. Rashes can happen because of an allergy or contact with an irritating substance. They may be red, itchy, or even painful. They are often treated with antihistamines or moisturizing creams containing cortisone.

Psoriasis is patches of thick, red skin that is covered in silvery scales. It is often itchy and sore. Psoriasis is thought to be caused by an immune disorder, and it runs in families. Psoriasis is not contagious. There is no cure, but there are medicated creams available to treat the symptoms.

Skin growths, including warts and moles, are usually not serious. However, some skin growths should be examined by a doctor to make sure they don't cause problems in the future. Warts are harmless, rough, bumpy growths caused by a viral infection. They occur most often on the hands and feet. Because they are caused by a virus, they are contagious. Moles are brown or black spots that are sometimes raised slightly from the surface of the skin. They happen when clumps of pigment cells form in a cluster instead of spread out. Moles are harmless except that they are more vulnerable to cancer than other parts of the skin. Skin cancer is the most common form of cancer in the United States, and its risk increases with sun exposure and fair skin tone.

Skin issues can be embarrassing or irritating, but most are minor and can be treated without serious problems. Some, however, can be a sign of a more significant issue, so it is important to see a doctor for anything out of the ordinary.

Noteworthy Medicare Patient Procedures Performed by Dr. Colleen Ann Keegan, MD, DO in 2024

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

Top 5%

By Affordability:

removal of lesion

In 2024, Dr. Colleen Ann Keegan, MD, DO had a list price for removal of lesion (e.g. growth) 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 Volume:

removal of lesion

By Affordability:

removal of benign skin lesion

In 2012, among providers in related specialties within Illinois, Dr. Colleen Ann Keegan, MD, DO performed more removal of lesion (e.g. growth) procedures for Medicare patients than 75% of them and she also had a list price for removal of benign (non-cancerous) skin lesion 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. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2012 were removal of lesion (e.g. growth), skin procedures and diagnostic procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

diagnostic procedures 12
doctor visit 296
removal of lesion (e.g. growth) 136
skin procedures 136

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2013 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 276
removal of lesion (e.g. growth) 105
skin procedures 105

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 31
Female 117
Age
From 65 to 74 82
From 75 to 84 49
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2013

Hypertension 51
High Cholesterol 53
Stroke 0
Ischemic Heart Disease 32
Depression 14
Chronic Kidney Disease 11
Asthma 0
Osteoperosis 7
Atrial Fibrilation 9
Heart Failure 0
Chronic Obstructive Pulmonary Disease 9
Diabetes 18
Dementia 0
Cancer 11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2014 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 132
removal of lesion (e.g. growth) 64
skin procedures 64

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 22
Female 69
Age
From 65 to 74 49
From 75 to 84 0
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2014

Hypertension 48
High Cholesterol 55
Stroke 0
Ischemic Heart Disease 23
Depression 13
Chronic Kidney Disease 0
Asthma 0
Osteoperosis 18
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 19
Dementia 0
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2015 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 224
removal of lesion (e.g. growth) 143
skin procedures 143

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 80
Female 184
Age
From 65 to 74 154
From 75 to 84 84
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2015

Hypertension 48
High Cholesterol 56
Stroke 0
Ischemic Heart Disease 27
Depression 12
Chronic Kidney Disease 0
Asthma 0
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 10
Chronic Obstructive Pulmonary Disease 0
Diabetes 17
Dementia 0
Cancer 11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2016 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 184
removal of lesion (e.g. growth) 141
skin procedures 141

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 35
Female 92
Age
From 65 to 74 74
From 75 to 84 41
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2016

Hypertension 54
High Cholesterol 46
Stroke 0
Ischemic Heart Disease 20
Depression 16
Chronic Kidney Disease 9
Asthma 10
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 17
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2017 were removal of lesion (e.g. growth), skin procedures and diagnostic procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

diagnostic procedures 30
doctor visit 437
removal of lesion (e.g. growth) 247
skin procedures 247

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 105
Female 189
Ethnicity
Non-Hispanic White 270
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 151
From 75 to 84 90
85 and over 33
Less than 65 20

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2017

Hypertension 55
High Cholesterol 43
Stroke 4
Ischemic Heart Disease 22
Depression 21
Chronic Kidney Disease 22
Asthma 6
Osteoperosis 11
Atrial Fibrilation 8
Heart Failure 11
Chronic Obstructive Pulmonary Disease 9
Diabetes 19
Dementia 6
Cancer 12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2018 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 176
removal of lesion (e.g. growth) 110
skin procedures 110

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 58
Female 112
Ethnicity
Non-Hispanic White 158
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 77
From 75 to 84 56
85 and over 21
Less than 65 16

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2018

Hypertension 55
High Cholesterol 56
Stroke 0
Ischemic Heart Disease 22
Depression 19
Chronic Kidney Disease 17
Asthma 0
Osteoperosis 14
Atrial Fibrilation 9
Heart Failure 8
Chronic Obstructive Pulmonary Disease 9
Diabetes 17
Dementia 8
Cancer 9

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2020 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 220
removal of lesion (e.g. growth) 148
skin procedures 148

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 66
Female 108
Ethnicity
Non-Hispanic White 158
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 96
From 75 to 84 47
85 and over 18
Less than 65 13

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2020

Hypertension 57
High Cholesterol 56
Stroke 0
Ischemic Heart Disease 26
Depression 19
Chronic Kidney Disease 23
Asthma 6
Osteoperosis 9
Atrial Fibrilation 11
Heart Failure 11
Chronic Obstructive Pulmonary Disease 9
Diabetes 22
Dementia 0
Cancer 11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2021 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 343
removal of lesion (e.g. growth) 211
skin procedures 211

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 77
Female 157
Ethnicity
Non-Hispanic White 203
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 112
From 75 to 84 81
85 and over 25
Less than 65 16

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2021

Hypertension 59
High Cholesterol 62
Stroke 0
Ischemic Heart Disease 22
Depression 19
Chronic Kidney Disease 23
Asthma 0
Osteoperosis 16
Atrial Fibrilation 8
Heart Failure 10
Chronic Obstructive Pulmonary Disease 6
Diabetes 19
Dementia 7
Cancer 12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2022 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 380
removal of lesion (e.g. growth) 262
skin procedures 262

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 92
Female 167
Ethnicity
Non-Hispanic White 229
Black 0
Hispanic 0
Asian 0
Other 12
Native American 0
Age
From 65 to 74 138
From 75 to 84 75
85 and over 29
Less than 65 17

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2022

Hypertension 65
High Cholesterol 75
Stroke 6
Ischemic Heart Disease 23
Depression 20
Chronic Kidney Disease 19
Asthma 10
Osteoperosis 21
Atrial Fibrilation 17
Heart Failure 14
Chronic Obstructive Pulmonary Disease 11
Diabetes 19
Dementia 5
Cancer 22

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2023 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 449
removal of lesion (e.g. growth) 332
skin procedures 332

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 100
Female 202
Ethnicity
Non-Hispanic White 264
Black 0
Hispanic 0
Asian 0
Other 19
Native American 0
Age
From 65 to 74 152
From 75 to 84 99
85 and over 29
Less than 65 22

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2023

Hypertension 61
High Cholesterol 75
Stroke 6
Ischemic Heart Disease 23
Depression 19
Chronic Kidney Disease 20
Asthma 10
Osteoperosis 18
Atrial Fibrilation 14
Heart Failure 11
Chronic Obstructive Pulmonary Disease 11
Diabetes 19
Dementia 4
Cancer 22

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL during 2024 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

doctor visit 459
removal of lesion (e.g. growth) 297
skin procedures 297

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Male 103
Female 207
Ethnicity
Non-Hispanic White 272
Black 12
Hispanic 0
Asian 0
Other 13
Native American 0
Age
From 65 to 74 162
From 75 to 84 99
85 and over 29
Less than 65 20

Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO in 2024

Hypertension 63
High Cholesterol 75
Stroke 5
Ischemic Heart Disease 25
Depression 20
Chronic Kidney Disease 22
Asthma 11
Osteoperosis 18
Atrial Fibrilation 13
Heart Failure 15
Chronic Obstructive Pulmonary Disease 16
Diabetes 23
Dementia 0
Cancer 20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Colleen Ann Keegan, MD, DO for Medicare patients.

The highest averages for the top procedures that Dr. Colleen Ann Keegan, MD, DO treated as a physician provider in St Charles, IL were removal of lesion (e.g. growth), skin procedures and diagnostic procedures.

diagnostic procedures 21
doctor visit 298
removal of lesion (e.g. growth) 183
skin procedures 183

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO.

Gender
Female 133
Male 64
Ethnicity
Black / African American 1
Asian / Pacific Islander 0
Non-Hispanic White 129
Native American / Alaskan Native 0
Hispanic 0
Other 3
Age
75 to 84 60
85 and over 15
Less than 65 10
65 to 74 103

Average of Total of Conditions of Medicare patients treated by Dr. Colleen Ann Keegan, MD, DO From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Colleen Ann Keegan, MD, DO treated were high cholesterol, hypertension, ischemic heart disease and diabetes.

Hypertension 51
High Cholesterol 54
Stroke 1
Ischemic Heart Disease 22
Depression 16
Chronic Kidney Disease 13
Asthma 4
Osteoporosis 11
Heart Failure 7
Chronic Obstructive Pulmonary Disease 6
Diabetes 17
Atrial Fibrillation 7
Dementia 2
Cancer 11

Education & Training

Dr. Colleen Ann Keegan, MD, DO graduated from Midwestern University Chicago College of Osteopathic Medicine in 1986. She completed residency at Cook County Health and Hospitals System. She is certified by the American Board of Dermatology - Dermatology (Certified) and has a state license in Illinois.

Medical School: Midwestern University Chicago College of Osteopathic Medicine (1986)

Residency: Cook County Health and Hospitals System (1990)

Board Certification: American Board of Dermatology - Dermatology (Certified)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Colleen Ann Keegan, MD, DO is associated with these hospitals and organizations:

Northwestern Medicine
Northwestern Medicine Regional Medical Group

Ratings & Reviews

Dr. Colleen Ann Keegan, MD, DO has an exceptional overall rating with an average of 4.92 out of 5 stars based on 109 ratings. We collect ratings and reviews of Dr. Colleen Ann Keegan, MD, DO from all over the web to help you find the right in St Charles, IL. 

4.92
Overall Rating
Leave a Review

General Payments

These charts describe general payments received by Dr. Colleen Ann Keegan, MD, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Regeneron Pharmaceuticals, Inc. $526
$526
Celgene Corporation $185 Otezla
$145
$40
AbbVie Inc. $162 Skyrizi
$141 		Humira
$21
Sun Pharmaceutical Industries Inc. $158 ILUMYA
$158
Pfizer Inc. $87 EUCRISA
$71 		CIBINQO
$15
Other $504 TALTZ
$69 		COSENTYX
$58 		DUPIXENT
$45 		Skyrizi
$37 		EPIDUO FORTE
$36 		Other
$259
Types of Payments
Food and Beverage $1,608
Education $15

Biography

Dr. Collen Keegan, who practices in Naperville, IL and Saint Charles, IL, is a medical specialist in dermatology (skin disorders) and physician. These areas are among Dr. Keegan's clinical interests: skin issues and cosmetic skin treatment. She is professionally affiliated with Northwestern Medicine Central DuPage Hospital and Delnor Hospital. She is a graduate of Midwestern University, Chicago College of Osteopathic Medicine. The average patient rating for Dr. Keegan is 5.0 stars (out of 5). She welcomes new patients at her office inSt Charles, IL as reported by Yext.