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Home > CO Providers > Neurosurgeons

Dr. Karl A. Sillay, MD

Accepting New Patients

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Specializes in: Neurosurgery

Medical College of Georgia

11750 W 2nd Place Suite 255
Lakewood, CO 80228

(720) 638-7500

Dr. Karl A. Sillay, MD is a neurosurgeon in Lakewood, CO specializing in neurosurgery. He graduated from Medical College of Georgia. Dr. Karl A. Sillay, MD is affiliated with Ascension, Ascension Sacred Heart Rehabilitation Hospital, Ascension Columbia St. Mary's Hospital Ozaukee, Ascension Calumet Hospital, Highpoint Health with Ascension Saint Thomas, Lutheran Health Network, HEALTH CARE AUTHORITY FOR BAPTIST HEALTH, AN AFFILIATE OF UABHS, Ascension NE Wisconsin - Mercy Campus, Ascension SE Wisconsin Hospital - Elmbrook Campus, LUTHERAN MEDICAL GROUP LLC, Ascension Saint Thomas Hospital Midtown, NASHVILLE BONE AND JOINT, PLLC, LEWIS GALE PHYSICIANS LLC, Ascension NE Wisconsin - St. Elizabeth Campus, Ascension Saint Thomas Hospital, Ascension Columbia St. Mary's Hospital Milwaukee and COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC.

Office Locations

11750 W 2nd Place Suite 255
Lakewood, CO 80228

(720) 638-7500

(720) 321-8041

open_in_new

1500 Sw 10th Avenue
Topeka, KS 66604

(785) 354-6000

open_in_new

Highpoint Health with Ascension Saint Thomas

1725 Medical Center Parkway Suite 120
Murfreesboro, TN 37129

(615) 629-4040

open_in_new

2301 North Lake Drive
Milwaukee, WI 53211

open_in_new

2400 Patterson Street Suite 319
Nashville, TN 37203

open_in_new

2660 Sw 3rd Street
Topeka, KS 66606

(785) 354-9591

open_in_new

Lutheran Health Network

6325 Humphreys Boulevard
Memphis, TN 38120

(901) 522-7700

open_in_new

7950 W Jefferson Boulevard
Fort Wayne, IN 46804

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Karl A. Sillay, MD in 2023

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

Top 5%

By Affordability:

hospital care

inpatient care

inpatient hospital care

In 2023, Dr. Karl A. Sillay, MD had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Colorado. 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. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2012 were hospital care, inpatient care, neurostimulator replacement and implant surgery.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

doctor visit	38
hospital care	90
implant surgery	31
inpatient care	90
neurostimulator replacement	31

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2013 were hospital care, inpatient care, lab tests and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

blood draw	14
brain imaging (neuroimaging)	26
CT scan	13
doctor visit	73
hospital care	233
implant surgery	15
inpatient care	233
lab tests	28
MRI (magnetic resonance imaging)	13
neurostimulator replacement	15

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	88
Female	102

**Ethnicity**
Non-Hispanic White	157
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	52
85 and over	26
Less than 65	38

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2013

Hypertension	75
High Cholesterol	58
Stroke	31
Ischemic Heart Disease	47
Depression	34
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	14
Atrial Fibrilation	18
Heart Failure	29
Chronic Obstructive Pulmonary Disease	17
Diabetes	34
Dementia	20
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2014 were inpatient care, hospital care, brain imaging (neuroimaging) and CT scan.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

blood draw	15
brain imaging (neuroimaging)	59
cranial surgery	24
CT scan	34
doctor visit	255
hospital care	184
implant surgery	23
inpatient care	184
lab tests	29
MRI (magnetic resonance imaging)	25
neurostimulator lead placement	24
neurostimulator replacement	23
spinal procedures	23
X-rays	23

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	136
Female	157

**Ethnicity**
Non-Hispanic White	234
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	112
From 75 to 84	86
85 and over	39
Less than 65	56

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2014

Hypertension	75
High Cholesterol	60
Stroke	20
Ischemic Heart Disease	47
Depression	30
Chronic Kidney Disease	31
Asthma	5
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	28
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2015 were hospital care, inpatient care, brain imaging (neuroimaging) and CT scan.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

brain imaging (neuroimaging)	56
cranial surgery	24
CT scan	37
doctor visit	225
hospital care	349
implant surgery	29
inpatient care	349
MRI (magnetic resonance imaging)	19
neurostimulator lead placement	24
neurostimulator replacement	29

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	306
Female	362

**Ethnicity**
Non-Hispanic White	548
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	202
85 and over	82
Less than 65	148

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2015

Hypertension	75
High Cholesterol	61
Stroke	30
Ischemic Heart Disease	45
Depression	34
Chronic Kidney Disease	37
Asthma	15
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	30
Chronic Obstructive Pulmonary Disease	21
Diabetes	39
Dementia	26
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2016 were spinal procedures, hospital care, inpatient care and nerve procedures.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

arthrodesis (bone fusion surgery)	13
decompression surgery	13
doctor visit	77
hospital care	22
inpatient care	22
neck surgery	13
nerve procedures	13
spinal procedures	24

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	50
Female	62

**Ethnicity**
Non-Hispanic White	99
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	41
From 75 to 84	0
85 and over	0
Less than 65	36

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2016

Hypertension	72
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	43
Depression	36
Chronic Kidney Disease	29
Asthma	29
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	29
Diabetes	30
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2017 were spinal procedures, nerve procedures, decompression surgery and neck surgery.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

arthrodesis (bone fusion surgery)	14
decompression surgery	26
doctor visit	196
neck surgery	14
nerve procedures	26
spinal procedures	38

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	80
Female	86

**Ethnicity**
Non-Hispanic White	148
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	43
85 and over	11
Less than 65	52

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	9
Ischemic Heart Disease	40
Depression	36
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	25
Diabetes	34
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2018 were hospital care, inpatient care, spinal procedures and X-rays.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

arthrodesis (bone fusion surgery)	12
decompression surgery	12
doctor visit	195
hospital care	114
inpatient care	114
neck surgery	12
nerve procedures	12
spinal procedures	78
X-rays	50

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	84
Female	90

**Ethnicity**
Non-Hispanic White	154
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	45
85 and over	17
Less than 65	36

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2018

Hypertension	75
High Cholesterol	64
Stroke	14
Ischemic Heart Disease	41
Depression	41
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	0
Atrial Fibrilation	17
Heart Failure	25
Chronic Obstructive Pulmonary Disease	29
Diabetes	37
Dementia	18
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2019 were hospital care, inpatient care, spinal procedures and X-rays.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

doctor visit	238
hospital care	212
inpatient care	212
spinal procedures	81
X-rays	70

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	105
Female	120

**Ethnicity**
Non-Hispanic White	194
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	58
85 and over	16
Less than 65	44

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2019

Hypertension	75
High Cholesterol	62
Stroke	19
Ischemic Heart Disease	41
Depression	44
Chronic Kidney Disease	44
Asthma	7
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	26
Diabetes	40
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2020 were hospital care, inpatient care, X-rays and spinal procedures.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

doctor visit	137
hospital care	144
inpatient care	144
spinal procedures	57
X-rays	57

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	85
Female	79

**Ethnicity**
Non-Hispanic White	139
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	47
85 and over	17
Less than 65	30

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2020

Hypertension	75
High Cholesterol	57
Stroke	23
Ischemic Heart Disease	48
Depression	45
Chronic Kidney Disease	48
Asthma	9
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	27
Chronic Obstructive Pulmonary Disease	28
Diabetes	37
Dementia	21
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

doctor visit	16
hospital care	55
inpatient care	55

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	23
Female	36

**Age**
From 65 to 74	27
From 75 to 84	15
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2021

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	49
Depression	42
Chronic Kidney Disease	51
Asthma	0
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	25
Chronic Obstructive Pulmonary Disease	25
Diabetes	36
Dementia	25
Cancer	19

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

hospital care	145
inpatient care	145

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	32
Female	22

**Ethnicity**
Non-Hispanic White	42
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	15
From 75 to 84	18
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	57
Ischemic Heart Disease	65
Depression	37
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	37
Heart Failure	43
Chronic Obstructive Pulmonary Disease	35
Diabetes	39
Dementia	26
Cancer	24

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Karl A. Sillay, MD for Medicare patients.

The highest averages for the top procedures that Dr. Karl A. Sillay, MD treated as a neurosurgeon in Lakewood, CO were inpatient care, hospital care, X-rays and spinal procedures.

arthrodesis (bone fusion surgery)	13
blood draw	14
brain imaging (neuroimaging)	47
cranial surgery	24
CT scan	28
decompression surgery	17
doctor visit	145
hospital care	154
implant surgery	24
inpatient care	154
lab tests	28
MRI (magnetic resonance imaging)	19
neck surgery	13
nerve procedures	17
neurostimulator lead placement	24
neurostimulator replacement	24
spinal procedures	50
X-rays	50

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Karl A. Sillay, MD.

**Gender**
Male	89
Female	101

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	155
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	51
85 and over	18
Less than 65	40
65 to 74	74

Average of Total of Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD From 2012 - 2022

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

Hypertension	67
High Cholesterol	56
Stroke	18
Ischemic Heart Disease	42
Depression	34
Chronic Kidney Disease	34
Asthma	7
Osteoporosis	6
Heart Failure	24
Chronic Obstructive Pulmonary Disease	23
Diabetes	33
Atrial Fibrillation	17
Dementia	18
Cancer	13

Education & Training

Dr. Karl A. Sillay, MD graduated from Medical College of Georgia. He completed residency at Vanderbilt University Medical Center. He is certified by the American Board of Neurological Surgery Neurology and has a state license in Wisconsin.

Medical School: Medical College of Georgia

Residency: Vanderbilt University Medical Center

Board Certification: American Board of Neurological Surgery Neurology

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Karl A. Sillay, MD is associated with these hospitals and organizations:

Ascension

Ascension Sacred Heart Rehabilitation Hospital

Ascension Columbia St. Mary's Hospital Ozaukee

Ascension Calumet Hospital

Highpoint Health with Ascension Saint Thomas

Lutheran Health Network

HEALTH CARE AUTHORITY FOR BAPTIST HEALTH, AN AFFILIATE OF UABHS

Ascension NE Wisconsin - Mercy Campus

Ascension SE Wisconsin Hospital - Elmbrook Campus

LUTHERAN MEDICAL GROUP LLC

Ascension Saint Thomas Hospital Midtown

NASHVILLE BONE AND JOINT, PLLC

LEWIS GALE PHYSICIANS LLC

Ascension NE Wisconsin - St. Elizabeth Campus

Ascension Saint Thomas Hospital

Ascension Columbia St. Mary's Hospital Milwaukee

COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC

Ratings & Reviews

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General Payments

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

**Payments by Company**
ARKIS BIOSCIENCES INC	$3,189 $3,189
Medtronic USA, Inc.	$2,299 ACTIVA $820	CATALYST $416	Deep Brain Neurostimulation $227	RIALTO $177	CD HORIZON $152	Other $506
Globus Medical, Inc.	$1,212 ExcelsiusGPS Robotic Navigation System $444	Excelsius Robotics System $323	Excelsius - GPS $119	Excelsius GPS $111	COLONIAL $97	Other $118
MRI Interventions, Inc.	$444 ClearPoint System $444
Stryker Corporation	$236 ALIF PLATE $126	AVS $67	New Product Development $29	Tritanium $13
Other	$1,237 TITAN NANOLOCK $159	Deep Brain Neurostimulation $148	Thoracolumbar $123	Advanced Energy Cutting Device $114	Visualase Thermal Therapy System $90	Other $603

**Types of Payments**
Food and Beverage	$3,591
Consulting Fee	$3,189
Travel and Lodging	$1,487
Honoraria	$350

Ownership and Interest Payments

This table describes ownership payments received by Dr. Karl A. Sillay, MD.

ARKIS BIOSCIENCES INC	2019	$13,285.60	Physician Covered Recipient	Total Options Vested
ARKIS BIOSCIENCES INC	2019	$235.02	Physician Covered Recipient	Option Holder

Biography

Dr. Karl Sillay's specialty is neurosurgery. He attended Medical College of Georgia and then went on to complete his residency at Vanderbilt University Medical Center. Dr. Sillay is affiliated with Ascension Sacred Heart Rehabilitation Hospital, Ascension Columbia St. Mary's Hospital Ozaukee, and Lutheran Health Network. His practice in Milwaukee, WI is open to new patients as reported by Ascension.

Select Year:

Dr. Karl A. Sillay, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Karl A. Sillay, MD in 2023

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Karl A. Sillay, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Ownership and Interest Payments

Biography

Neurosurgeons in Nearby Locations

Other Providers in Lakewood, CO