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Dr. Mary Ahn, MD

Accepting New Patients

(Mary Ahn, MD)

(57 Ratings)

Specializes in: General Surgery and General Practice

Loyola University Chicago, Stritch School of Medicine (1995)

Professional interests include: breast surgery, image-guided breast biopsy, partial mastectomy, and more.

25 N Winfield Road Suite 2202
Winfield, IL 60190

(630) 307-7799

Dr. Mary Ahn, MD is a general surgeon in Winfield, IL specializing in general surgery and general practice. She graduated from Loyola University Chicago, Stritch School of Medicine in 1995 and has 31 years of experience. Dr. Mary Ahn, MD is affiliated with Northwestern University Feinberg School of Medicine, Northwestern Medicine, CENTRAL DUPAGE PHYSICIAN GROUP and Northwestern Medical Group.

Office Locations

25 N Winfield Road Suite 2202
Winfield, IL 60190

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304 Randall Road
Geneva, IL 60134

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4405 Weaver Parkway
Warrenville, IL 60555

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676 N Saint Clair Suite 2320
Chicago, IL 60611

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In The News

“Thank goodness for modern medical science, and for many great surgeons such as Dr. Mary Ahn, in the Northwestern Regional Medical practice, who operates at Delnor Hospital in Geneva and at Central...”—"The power of positive attitude and modern medicine", Daily Herald, May 2020

Noteworthy Medicare Patient Procedures Performed by Dr. Mary Ahn, MD in 2023

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

Top 10%

By Affordability:

sentinel lymph node mapping

In 2023, Dr. Mary Ahn, MD had a list price for sentinel lymph node mapping that was lower than the list prices billed to Medicare by 90% 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:

breast-conserving surgery

lymph node biopsy

lymph node procedures

open lymph node biopsy

partial mastectomy

By Affordability:

deep lymph node biopsy

lymph node biopsy

lymph node excision

lymph node procedures

open lymph node biopsy

surgical lymph node biopsy

In 2012, among providers in related specialties within Illinois, Dr. Mary Ahn, MD performed more breast-conserving surgery, lymph node biopsy, lymph node procedures, open lymph node biopsy, and partial mastectomy procedures for Medicare patients than 75% of them and she also had a list price for deep lymph node biopsy, lymph node biopsy, lymph node excision, lymph node procedures, open lymph node biopsy, and surgical lymph node biopsy 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. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2012 were breast procedures, ultrasound (sonogram), women's imaging and minor procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	27
diagnostic procedures	13
doctor visit	110
excision	13
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
open surgery	13
ultrasound (sonogram)	14
women's imaging	14

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2013 were breast procedures, minimally invasive procedures, image guided procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	42
diagnostic procedures	15
doctor visit	135
excision	15
image guided procedures	27
minimally invasive procedures	27
minor procedures	15
open surgery	15
ultrasound (sonogram)	15
women's imaging	15

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	75
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	23
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2013

Hypertension	58
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	20
Depression	23
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	22
Dementia	0
Cancer	62

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2014 were breast procedures, minimally invasive procedures, image guided procedures and minor procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	61
cancer surgery	16
diagnostic procedures	32
doctor visit	196
excision	16
image guided procedures	45
minimally invasive procedures	45
minor procedures	32

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	104
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	33
85 and over	16
Less than 65	14

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2014

Hypertension	67
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	15
Depression	26
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	10
Diabetes	28
Dementia	0
Cancer	57

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2015 were breast procedures, cancer surgery, excision and minimally invasive procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	27
cancer surgery	16
doctor visit	153
excision	16
image guided procedures	11
minimally invasive procedures	11

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	58
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2015

Hypertension	57
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	15
Depression	24
Chronic Kidney Disease	12
Asthma	0
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	0
Cancer	66

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2016 were breast procedures, excision, minimally invasive procedures and image guided procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	100
cancer surgery	26
diagnostic procedures	43
doctor visit	237
excision	46
image guided procedures	44
lymph node procedures	40
minimally invasive procedures	44
minor procedures	23
open surgery	20
ultrasound (sonogram)	30
women's imaging	30

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	135
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	43
85 and over	19
Less than 65	12

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2016

Hypertension	58
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	20
Depression	22
Chronic Kidney Disease	11
Asthma	14
Osteoperosis	19
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	18
Dementia	0
Cancer	74

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2017 were breast procedures, excision, lymph node procedures and diagnostic procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	74
cancer surgery	34
diagnostic procedures	44
doctor visit	271
excision	64
image guided procedures	40
lymph node procedures	60
minimally invasive procedures	40
minor procedures	14
open surgery	30

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Gender**
Male	0
Female	175

**Ethnicity**
Non-Hispanic White	155
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2017

Hypertension	58
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	16
Depression	20
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	19
Atrial Fibrilation	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2018 were breast procedures, excision, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	52
cancer surgery	30
diagnostic procedures	42
doctor visit	306
excision	50
image guided procedures	22
lymph node procedures	33
minimally invasive procedures	22
minor procedures	22
open surgery	20

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	185
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	65
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2018

Hypertension	66
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	15
Depression	19
Chronic Kidney Disease	14
Asthma	8
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	20
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2019 were breast procedures, excision, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	41
cancer surgery	22
diagnostic procedures	38
doctor visit	290
excision	41
image guided procedures	19
lymph node procedures	38
minimally invasive procedures	19
minor procedures	19
open surgery	19

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	72
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2019

Hypertension	60
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	13
Depression	21
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	14
Atrial Fibrilation	5
Heart Failure	8
Chronic Obstructive Pulmonary Disease	5
Diabetes	24
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2020 were excision, lymph node procedures, breast procedures and diagnostic procedures.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	63
cancer surgery	42
diagnostic procedures	52
doctor visit	288
excision	73
image guided procedures	21
lymph node procedures	64
minimally invasive procedures	21
minor procedures	21
open surgery	31

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	187
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	74
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2020

Hypertension	61
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	14
Depression	21
Chronic Kidney Disease	13
Asthma	7
Osteoperosis	14
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2021 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	49
cancer surgery	49
diagnostic procedures	25
doctor visit	268
excision	74
lymph node procedures	53
open surgery	25

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	76
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2021

Hypertension	64
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	18
Depression	15
Chronic Kidney Disease	13
Asthma	8
Osteoperosis	16
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	19
Dementia	6
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL during 2022 were excision, breast procedures, lymph node procedures and cancer surgery.

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

breast procedures	91
cancer surgery	80
diagnostic procedures	50
doctor visit	213
excision	130
lymph node procedures	82
open surgery	50

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Ethnicity**
Non-Hispanic White	170
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	74
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mary Ahn, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	16
Depression	15
Chronic Kidney Disease	8
Asthma	8
Osteoperosis	24
Atrial Fibrilation	15
Heart Failure	7
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mary Ahn, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary Ahn, MD treated as a general surgeon in Winfield, IL were breast procedures, lymph node procedures, excision and cancer surgery.

breast procedures	57
cancer surgery	35
diagnostic procedures	35
doctor visit	224
excision	48
image guided procedures	26
lymph node procedures	52
minimally invasive procedures	26
minor procedures	19
open surgery	24
ultrasound (sonogram)	19
women's imaging	19

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mary Ahn, MD.

**Gender**
Male	0
Female	15

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	146
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	50
85 and over	3
Less than 65	2
65 to 74	89

Average of Total of Conditions of Medicare patients treated by Dr. Mary Ahn, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mary Ahn, MD treated were cancer, hypertension, high cholesterol and depression.

Hypertension	56
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	14
Depression	18
Chronic Kidney Disease	8
Asthma	4
Osteoporosis	14
Heart Failure	6
Chronic Obstructive Pulmonary Disease	6
Diabetes	19
Atrial Fibrillation	4
Cancer	64
Dementia	0

Education & Training

Dr. Mary Ahn, MD graduated from Loyola University Chicago, Stritch School of Medicine in 1995. She completed residency at Loyola University Affiliated Hospitals. She is certified by the American Board of Surgery - Surgery (Certified) and has a state license in Illinois.

Medical School: Loyola University Chicago, Stritch School of Medicine (1995)

Residency: Loyola University Affiliated Hospitals (2000)

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

Licensed In: Illinois

Affiliations & Hospitals

Dr. Mary Ahn, MD is associated with these hospitals and organizations:

Northwestern University Feinberg School of Medicine

Northwestern Medicine

CENTRAL DUPAGE PHYSICIAN GROUP

Northwestern Medical Group

Ratings & Reviews

Dr. Mary Ahn, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 57 ratings. We collect ratings and reviews of Dr. Mary Ahn, MD from all over the web to help you find the right in Winfield, IL.

Overall Rating

(57 Ratings)

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General Payments

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

**Payments by Company**
Bard Peripheral Vascular, Inc.	$146 Vascular $60	BPV-EnCor Enspire $29	BPV-Marquee $27	MARQUEE $11	$19
Cianna Medical, Inc	$143 SAVI $143
GE Healthcare	$135 $135
Allergan Inc.	$112 AlloDerm $112
Genentech USA, Inc.	$83 Perjeta $83
Other	$140 TUKYSA $50	BREO $29	xr $20	INVOKANA $15	Advanced Energy Cutting Device $15	Other $11

**Types of Payments**
Food and Beverage	$760

Biography

Dr. Mary Ahn is a general practice and general surgery specialist in Geneva, IL, Warrenville, IL, and Winfield, IL. These areas are among her clinical interests: sentinel lymph node biopsy (SLNB), image-guided breast biopsy, and partial mastectomy. Her professional affiliations include Northwestern Medicine Central DuPage Hospital, Delnor Hospital, and Northwestern University Feinberg School of Medicine. Before performing her residency at a hospital affiliated with Loyola University, Dr. Ahn attended Loyola University Chicago, Stritch School of Medicine. The average patient rating for Dr. Ahn is 5.0 stars (out of 5). According to Yext, new patients are welcome to contact her office in Winfield, IL.