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Home > IL Providers > Neurosurgeons

Dr. Andrew S. Zelby, MD

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Specializes in: Neurosurgery

Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine

Professional interests include: neck pain, stereotactic radiosurgery (SRS), laser treatment, and more.

5115 N. Francisco Avenue
Chicago, IL 60625

(847) 570-1440

Dr. Andrew S. Zelby, MD is a neurosurgeon in Westchester, IL specializing in neurosurgery. He graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine. Dr. Andrew S. Zelby, MD is affiliated with Endeavor Health, Ascension, Ascension Saint Joseph - Chicago and ENDEAVOR HEALTH MEDICAL GROUP.

Office Locations

1 Westbrook Corporate Center Suite 800
Westchester, IL 60154

(708) 343-3566

(708) 343-3585

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133 E Brush Hill Road Suite 205 Neurological Surgery & Spine Surgery
Elmhurst, IL 60126

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Endeavor Health

3122 N. Ashland Avenue
Chicago, IL 60657

(708) 343-3566

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Endeavor Health

5115 N. Francisco Avenue
Chicago, IL 60625

(847) 570-1440

open_in_new

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2012 were rehabilitation, hospital care, inpatient care and manual therapy.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

decompression surgery	15
doctor visit	277
hospital care	99
inpatient care	99
manual therapy	65
nerve procedures	15
rehabilitation	144
spinal procedures	15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2013 were rehabilitation, hospital care, inpatient care and manual therapy.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

decompression surgery	11
diagnostic evaluation	13
doctor visit	294
hospital care	118
inpatient care	118
manual therapy	80
nerve procedures	11
rehabilitation	275
spinal procedures	11

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	140
Female	194

**Ethnicity**
Non-Hispanic White	268
Black	0
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	112
85 and over	53
Less than 65	29

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2013

Hypertension	75
High Cholesterol	72
Stroke	14
Ischemic Heart Disease	45
Depression	29
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	37
Dementia	20
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2014 were hospital care, inpatient care, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

decompression surgery	12
doctor visit	265
hospital care	64
inpatient care	64
nerve procedures	12
spinal procedures	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	127
Female	137

**Ethnicity**
Non-Hispanic White	217
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	78
85 and over	36
Less than 65	29

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2014

Hypertension	75
High Cholesterol	67
Stroke	13
Ischemic Heart Disease	43
Depression	21
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	12
Atrial Fibrilation	15
Heart Failure	21
Chronic Obstructive Pulmonary Disease	16
Diabetes	38
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	245
hospital care	67
inpatient care	67

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	254
Female	254

**Ethnicity**
Non-Hispanic White	418
Black	0
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	202
From 75 to 84	158
85 and over	90
Less than 65	58

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	20
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	25
Asthma	9
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	34
Dementia	12
Cancer	19

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2016 were hospital care, inpatient care, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

decompression surgery	11
doctor visit	255
hospital care	64
inpatient care	64
nerve procedures	11
spinal procedures	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	117
Female	137

**Ethnicity**
Non-Hispanic White	205
Black	0
Hispanic	27
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	83
85 and over	43
Less than 65	23

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2016

Hypertension	75
High Cholesterol	70
Stroke	15
Ischemic Heart Disease	44
Depression	20
Chronic Kidney Disease	32
Asthma	21
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	19
Diabetes	38
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	235
hospital care	45
inpatient care	45

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	98
Female	119

**Ethnicity**
Non-Hispanic White	180
Black	0
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	70
85 and over	31
Less than 65	17

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	12
Ischemic Heart Disease	38
Depression	28
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	40
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	228
hospital care	28
inpatient care	28

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	88
Female	117

**Ethnicity**
Non-Hispanic White	155
Black	13
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	69
85 and over	27
Less than 65	18

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2018

Hypertension	71
High Cholesterol	68
Stroke	11
Ischemic Heart Disease	38
Depression	28
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	12
Diabetes	40
Dementia	13
Cancer	7

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	190
hospital care	24
inpatient care	24

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	75
Female	96

**Ethnicity**
Non-Hispanic White	131
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	63
85 and over	16
Less than 65	20

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2019

Hypertension	75
High Cholesterol	74
Stroke	13
Ischemic Heart Disease	46
Depression	37
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	112

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	51
Female	59

**Ethnicity**
Non-Hispanic White	88
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	41
From 75 to 84	50
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2020

Hypertension	75
High Cholesterol	69
Stroke	0
Ischemic Heart Disease	39
Depression	25
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	39
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	144
hospital care	13
inpatient care	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	58
Female	76

**Ethnicity**
Non-Hispanic White	108
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	48
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2021

Hypertension	69
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	35
Dementia	9
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

doctor visit	27
hospital care	21
inpatient care	21

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	23
Female	38

**Ethnicity**
Non-Hispanic White	50
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	21
From 75 to 84	26
85 and over	14
Less than 65	0

Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	31
Ischemic Heart Disease	30
Depression	33
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	28
Atrial Fibrilation	20
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	36
Dementia	25
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Andrew S. Zelby, MD for Medicare patients.

The highest averages for the top procedures that Dr. Andrew S. Zelby, MD treated as a neurosurgeon in Westchester, IL were rehabilitation, manual therapy, hospital care and inpatient care.

decompression surgery	12
diagnostic evaluation	13
doctor visit	206
hospital care	54
inpatient care	54
manual therapy	72
nerve procedures	12
rehabilitation	209
spinal procedures	12

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Andrew S. Zelby, MD.

**Gender**
Male	93
Female	111

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	165
Native American / Alaskan Native	0
Hispanic	15
Other	0

**Age**
75 to 84	68
85 and over	28
Less than 65	17
65 to 74	87

Average of Total of Conditions of Medicare patients treated by Dr. Andrew S. Zelby, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Andrew S. Zelby, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	67
High Cholesterol	62
Stroke	11
Ischemic Heart Disease	36
Depression	24
Chronic Kidney Disease	26
Asthma	6
Osteoporosis	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	12
Diabetes	33
Atrial Fibrillation	11
Dementia	14
Cancer	9

Education & Training

Dr. Andrew S. Zelby, MD graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine. He completed residency at Loyola University Affiliated Hospitals. He is certified by the American Board of Neurological Surgery and has a state license in Illinois.

Medical School: Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine

Residency: Loyola University Affiliated Hospitals (1994)

Board Certification: American Board of Neurological Surgery (1996)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Andrew S. Zelby, MD is associated with these hospitals and organizations:

Endeavor Health

Ascension

Ascension Saint Joseph - Chicago

ENDEAVOR HEALTH MEDICAL GROUP

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General Payments

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

**Payments by Company**
NUVASIVE, INC.	$4,963 XLIF $1,393	PCM $969	LessRay $508	ALIF $419	Pulse $219	Other $1,455
SI-Bone, Inc.	$1,357 iFuse Implant $314	$1,043
LDR SPINE USA, INC	$259 Spinal Implant $259
Stryker Corporation	$220 Biomaterials $110	THORACO-LUMBAR $91	Cervical $20
K2M, Inc.	$163 General K2M Product Discussion $128	SANTORINI $35
Other	$1,426 EXPEDIUM $121	InvisiShunt $111	Pradaxa $107	BioSurgery - ACTIFUSE $106	BIOLOGIX Allograft Bone $78	Other $902

**Types of Payments**
Food and Beverage	$5,635
Travel and Lodging	$2,715
Education	$39

Biography

Dr. Andrew Zelby is a specialist in neurosurgery. Dr. Zelby attended medical school at Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine and the University of Oklahoma College of Medicine. He trained at a hospital affiliated with Loyola University for his residency. His areas of expertise include back pain, sciatica (sciatic nerve pain), and brain surgery. He speaks Spanish. Dr. Zelby's professional affiliations include Ascension and Endeavor Health.