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Dr. Gregory Zagaja, MD

(2459 Ratings)

Specializes in: Urologic Oncology

National University of Ireland Galway, School of Medicine

Professional interests include: bladder cancer, genitourinary cancer, prostate cancer

5841 S Maryland Avenue
Chicago, IL 60637

1-888-824-0200

Dr. Gregory Zagaja, MD is an urologic oncologist in Chicago, IL specializing in urologic oncology. He graduated from National University of Ireland Galway, School of Medicine. Dr. Gregory Zagaja, MD is affiliated with The University of Chicago Medicine.

Office Locations

The University of Chicago Medicine

5758 S. Maryland Avenue
Chicago, IL 60637

1-888-824-0200

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5841 S Maryland Avenue
Chicago, IL 60637

1-888-824-0200

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In The News

“Dr. Gregory Zagaja, a surgeon who helped develop the robot-assisted surgery program at University of Chicago Medicine, said robot-assisted prostatectomies are as good as open.”—"Remote-control surgery grows despite inconclusive evidence", Seattle Times, March 2012

“Dr. Greg Zagaja of University of Chicago Medical Center, who does similar research but wasn't involved in the new study, said the Medicare billing codes don't necessarily represent the surgical...”—"Trade-offs in prostate keyhole surgery", Nevada Appeal, October 2009

Noteworthy Medicare Patient Procedures Performed by Dr. Gregory Zagaja, MD in 2023

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

Top 10%

By Volume:

laparoscopic radical prostatectomy

In 2023, Dr. Gregory Zagaja, MD performed more laparoscopic radical prostatectomy procedures for Medicare patients than 90% of providers in related specialties within Illinois.

Top 25%

By Volume:

laparoscopic pelvic lymphadenectomy

lymphadenectomy

minimally invasive prostate surgery

minimally invasive surgery

prostate surgery

In 2012, Dr. Gregory Zagaja, MD performed more laparoscopic pelvic lymphadenectomy, lymphadenectomy (lymph node dissection), minimally invasive prostate surgery, minimally invasive surgery, and prostate surgery procedures for Medicare patients than 75% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2012 were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	23
dissection	23
doctor visit	339
excision	23
lymph node procedures	23
minimally invasive procedures	59
pelvic surgery	23
urologic procedures	36

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2013 were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	36
dissection	36
doctor visit	404
excision	36
lymph node procedures	36
minimally invasive procedures	87
pelvic surgery	36
urologic procedures	51

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	217
Black	60
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	225
From 75 to 84	61
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2013

Hypertension	61
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	31
Depression	5
Chronic Kidney Disease	11
Asthma	4
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	22
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2014 were minimally invasive procedures, dissection, cancer surgery and pelvic surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	32
dissection	32
doctor visit	370
excision	32
lymph node procedures	32
minimally invasive procedures	64
pelvic surgery	32
urologic procedures	32

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	216
Black	65
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	71
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2014

Hypertension	60
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	33
Depression	6
Chronic Kidney Disease	14
Asthma	5
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	28
Dementia	4
Cancer	73

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2015 were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	32
dissection	32
doctor visit	361
excision	32
lymph node procedures	32
minimally invasive procedures	78
pelvic surgery	32
urologic procedures	46

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	440
Black	120
Hispanic	24
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	472
From 75 to 84	120
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2015

Hypertension	58
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	28
Depression	6
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	7
Chronic Obstructive Pulmonary Disease	4
Diabetes	26
Dementia	0
Cancer	74

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2016 were minimally invasive procedures, cancer surgery, urologic procedures and dissection.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	44
dissection	43
doctor visit	452
excision	43
lymph node procedures	43
minimally invasive procedures	87
pelvic surgery	43
urologic procedures	44

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	259
Black	75
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	77
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2016

Hypertension	60
High Cholesterol	49
Stroke	3
Ischemic Heart Disease	32
Depression	6
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	28
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2017 were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	38
diagnostic procedures	16
dissection	38
doctor visit	492
excision	38
lymph node procedures	38
minimally invasive procedures	92
minor procedures	16
pelvic surgery	38
urologic procedures	54

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	273
Black	75
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	275
From 75 to 84	90
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2017

Hypertension	61
High Cholesterol	43
Stroke	4
Ischemic Heart Disease	28
Depression	8
Chronic Kidney Disease	19
Asthma	5
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	24
Dementia	5
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2018 were minimally invasive procedures, urologic procedures, cancer surgery and dissection.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	46
diagnostic procedures	28
dissection	45
doctor visit	566
excision	45
lymph node procedures	45
minimally invasive procedures	119
minor procedures	28
pelvic surgery	45
urologic procedures	74

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	300
Black	90
Hispanic	0
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	115
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2018

Hypertension	60
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	29
Depression	10
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	5
Diabetes	26
Dementia	5
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2019 were minimally invasive procedures, urologic procedures, dissection and pelvic surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	54
diagnostic procedures	23
dissection	55
doctor visit	588
excision	55
lymph node procedures	55
minimally invasive procedures	145
minor procedures	23
pelvic surgery	55
stent placement (stenting)	13
urologic procedures	90

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	322
Black	103
Hispanic	20
Asian	14
Other	25
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	120
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2019

Hypertension	61
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	30
Depression	10
Chronic Kidney Disease	23
Asthma	4
Osteoperosis	4
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	5
Diabetes	23
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2020 were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	36
diagnostic procedures	32
dissection	36
doctor visit	342
excision	36
lymph node procedures	36
minimally invasive procedures	104
minor procedures	32
pelvic surgery	36
urologic procedures	68

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	260
Black	75
Hispanic	0
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	101
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2020

Hypertension	57
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	28
Depression	10
Chronic Kidney Disease	23
Asthma	4
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	22
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2021 were minimally invasive procedures, urologic procedures, cancer surgery and dissection.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	39
diagnostic procedures	17
dissection	38
doctor visit	498
excision	38
lymph node procedures	38
minimally invasive procedures	119
minor procedures	17
pelvic surgery	38
stent placement (stenting)	12
urologic procedures	81

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Gender**
Male	440
Female	13

**Ethnicity**
Non-Hispanic White	306
Black	87
Hispanic	18
Asian	16
Other	26
Native American	0

**Age**
From 65 to 74	313
From 75 to 84	108
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2021

Hypertension	57
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	29
Depression	7
Chronic Kidney Disease	26
Asthma	6
Osteoperosis	3
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	4
Diabetes	22
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL during 2022 were minimally invasive procedures, dissection, cancer surgery and pelvic surgery.

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

cancer surgery	36
dissection	36
doctor visit	351
excision	36
lymph node procedures	36
minimally invasive procedures	72
pelvic surgery	36
urologic procedures	36

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Ethnicity**
Non-Hispanic White	229
Black	78
Hispanic	21
Asian	12
Other	14
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	92
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory Zagaja, MD in 2022

Hypertension	70
High Cholesterol	71
Stroke	5
Ischemic Heart Disease	26
Depression	8
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	5
Atrial Fibrilation	15
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	20
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gregory Zagaja, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory Zagaja, MD treated as an urologic oncologist in Chicago, IL were minimally invasive procedures, urologic procedures, dissection and cancer surgery.

cancer surgery	37
diagnostic procedures	23
dissection	37
doctor visit	433
excision	37
lymph node procedures	37
minimally invasive procedures	93
minor procedures	23
pelvic surgery	37
stent placement (stenting)	12
urologic procedures	55

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gregory Zagaja, MD.

**Gender**
Male	40
Female	1

**Ethnicity**
Black / African American	75
Asian / Pacific Islander	3
Non-Hispanic White	256
Native American / Alaskan Native	0
Hispanic	10
Other	11

**Age**
75 to 84	86
85 and over	0
Less than 65	0
65 to 74	262

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

The highest averages of the most common conditions of Medicare patients that Dr. Gregory Zagaja, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	55
High Cholesterol	48
Stroke	1
Ischemic Heart Disease	26
Depression	6
Chronic Kidney Disease	17
Asthma	5
Osteoporosis	1
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	21
Atrial Fibrillation	7
Dementia	2
Cancer	67

Education & Training

Dr. Gregory Zagaja, MD graduated from National University of Ireland Galway, School of Medicine. He completed residency at University of Chicago Affiliated Hospitals. He is certified by the Board Certification: Urology and has a state license in Illinois.

Medical School: National University of Ireland Galway, School of Medicine

Residency: University of Chicago Affiliated Hospitals

Board Certification: Board Certification: Urology

Licensed In: Illinois

Affiliations & Hospitals

Dr. Gregory Zagaja, MD is associated with these hospitals and organizations:

The University of Chicago Medicine

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Gregory Zagaja, MD appears to accept the following insurance providers: Blue Cross Blue Shield PPO, Aetna PPO, CIGNA PPO, CIGNA POS, CIGNA HMO, MultiPlan PPO, Medicare Advantage, Aetna POS, Medicare, Humana, PHCS PPO, Aetna Medicare PPO, United W500 Emergent Wrap, Aetna Better Health *see insurance page, United Options (PPO), CountyCare *see insurance page, BCBS HMO (HMOI) (specialists only), United Select (HMO & EPO) (specialists only), University of Chicago Health Plan (UCHP), United Choice HMO (specialists only), BCBS Blue Precision HMO (specialists only), Aetna HMO (specialists only) and United Choice Plus POS/PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gregory Zagaja, MD accepts the following insurance providers:

Blue Cross Blue Shield PPO

Aetna PPO

CIGNA PPO

CIGNA POS

CIGNA HMO

MultiPlan PPO

Medicare Advantage

Aetna POS

Medicare

Humana

PHCS PPO

Aetna Medicare PPO

United W500 Emergent Wrap

Aetna Better Health *see insurance page

United Options (PPO)

CountyCare *see insurance page

BCBS HMO (HMOI) (specialists only)

United Select (HMO & EPO) (specialists only)

University of Chicago Health Plan (UCHP)

United Choice HMO (specialists only)

BCBS Blue Precision HMO (specialists only)

Aetna HMO (specialists only)

United Choice Plus POS/PPO

Ratings & Reviews

Dr. Gregory Zagaja, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 2459 ratings. We collect ratings and reviews of Dr. Gregory Zagaja, MD from all over the web to help you find the right in Chicago, IL.

4.9

Overall Rating

(2459 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2020-10-28

I reviewed my case with 3 different Drs at- Mayo, Northwestern, DuPage Medical facilities. He is the best Dr I was able to locate. He has the best treatment results that I was able to find. He is a high rated surgeon whom I have very high confidence in. The results were just as he stated. I highly recommend him for his expertise and care.

General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$6,204 DA VINCI SP $4,500	Da Vinci Surgical System $1,704
Profound Medical Corp.	$94 Tulsa-Pro $94
Myriad Genetic Laboratories, Inc.	$47 Prolaris $47
180 Medical, Inc.	$20 $20
Pfizer Inc.	$13 TOVIAZ $13
Other	$11 AXIRON $11

**Types of Payments**
Education	$4,500
Travel and Lodging	$1,055
Food and Beverage	$813
Gift	$23

Biography

Dr. Gregory Zagaja is a medical specialist in urologic oncology. Patients gave Dr. Zagaja an average rating of 5.0 stars (out of 5). His clinical interests encompass bladder cancer and prostate cancer. He is professionally affiliated with The University of Chicago Medicine. He can take Blue California, Aetna, CIGNA Plans, and more. He graduated from National University of Ireland Galway, School of Medicine and then he performed his residency at a hospital affiliated with Johns Hopkins University and a hospital affiliated with the University of Chicago.