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Dr. Ian S. Katznelson, MD

Accepting New Patients

(Ian S. Katznelson, MD)

(100 Ratings)

Specializes in: Psychiatry & Neurology, Sleep Medicine, General Practice and Neurology (Brain & Spinal Cord Disease)

Northwestern University, Feinberg School of Medicine (1998)

1475 E Belvidere Road Pavilion C, Suite 203
Grayslake, IL 60030

(847) 535-7658

Dr. Ian S. Katznelson, MD is a null in Grayslake, IL specializing in psychiatry & neurology, sleep medicine, general practice and neurology (brain & spinal cord disease). He graduated from Northwestern University, Feinberg School of Medicine in 1998 and has 28 years of experience. Dr. Ian S. Katznelson, MD is affiliated with Northwestern Medicine, Northwestern University Feinberg School of Medicine, Center for Circadian and Sleep Medicine and Northwestern Medical Group - Neurology Sleep Medicine.

Office Locations

1475 E Belvidere Road Pavilion C, Suite 203
Grayslake, IL 60030

open_in_new

1000 N Westmoreland Road Level 3
Lake Forest, IL 60045

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2701 Patriot Boulevard
Glenview, IL 60026

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710 N Lake Shore Drive Abbott Hall, Suite 1123
Chicago, IL 60611

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In The News (see more mentions in the news)

“Sleepiness is widely believed to be influenced by both circadian rhythms and sleep pressure, said Dr. Ian Katznelson, a neurologist at Northwestern Medicine Lake Forest Hospital.”—"How to Beat the Afternoon Slump", New York Times, February 2025

“Se cree que la somnolencia esta influida tanto por los ritmos circadianos como por la presion del sueno, dijo Ian Katznelson, neurologo del Hospital Northwestern Medicine en Lake Forest.”—"Como vencer el bajon de energia de la tarde", New York Times, February 2025

“Puedes encontrar formas de sobrellevar el hecho de dormir menos, como tomar cafeina o saltarte actividades nocturnas, dijo Ian Katznelson, neurologo del Hospital Northwestern Medicine Lake Forest.”—"6 mitos sobre el sueno", New York Times, January 2025

Noteworthy Medicare Patient Procedures Performed by Dr. Ian S. Katznelson, MD in 2023

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

Top 10%

By Volume:

blood draw

phlebotomy for lab tests

In 2023, Dr. Ian S. Katznelson, MD performed more blood draw, and phlebotomy for lab tests procedures for Medicare patients than 90% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2012 were diagnostic procedures, hospital care, inpatient care and sleep study.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	41
diagnostic procedures	327
doctor visit	659
electroencephalography (EEG)	16
hospital care	324
inpatient care	324
sleep study	85

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2013 were hospital care, inpatient care, electroencephalography (EEG) and sleep study.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	13
doctor visit	628
electroencephalography (EEG)	54
hospital care	269
inpatient care	269
sleep study	32

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	205
Female	229

**Ethnicity**
Non-Hispanic White	392
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	163
85 and over	76
Less than 65	39

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2013

Hypertension	72
High Cholesterol	68
Stroke	27
Ischemic Heart Disease	42
Depression	26
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	21
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2014 were hospital care, inpatient care, electroencephalography (EEG) and blood draw.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

blood draw	20
diagnostic procedures	13
doctor visit	806
electroencephalography (EEG)	41
hospital care	241
inpatient care	241

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	229
Female	270

**Ethnicity**
Non-Hispanic White	448
Black	22
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	187
From 75 to 84	194
85 and over	75
Less than 65	43

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2014

Hypertension	67
High Cholesterol	62
Stroke	27
Ischemic Heart Disease	37
Depression	22
Chronic Kidney Disease	24
Asthma	8
Osteoperosis	10
Atrial Fibrilation	20
Heart Failure	17
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2015 were hospital care, inpatient care, sleep study and airway management.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	34
doctor visit	720
electroencephalography (EEG)	13
hospital care	134
inpatient care	134
sleep study	62

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	472
Female	472

**Ethnicity**
Non-Hispanic White	854
Black	42
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	386
From 75 to 84	318
85 and over	156
Less than 65	84

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2015

Hypertension	70
High Cholesterol	59
Stroke	22
Ischemic Heart Disease	35
Depression	24
Chronic Kidney Disease	24
Asthma	12
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	19
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2016 were hospital care, inpatient care, sleep study and airway management.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	51
doctor visit	803
electroencephalography (EEG)	12
hospital care	191
inpatient care	191
sleep study	97

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	262
Female	290

**Ethnicity**
Non-Hispanic White	481
Black	31
Hispanic	23
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	230
From 75 to 84	190
85 and over	83
Less than 65	49

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2016

Hypertension	71
High Cholesterol	58
Stroke	23
Ischemic Heart Disease	38
Depression	27
Chronic Kidney Disease	32
Asthma	17
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	35
Dementia	22
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2017 were hospital care, inpatient care, sleep study and airway management.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	66
doctor visit	871
hospital care	194
inpatient care	194
sleep study	108

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	305
Female	297

**Ethnicity**
Non-Hispanic White	528
Black	23
Hispanic	29
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	272
From 75 to 84	194
85 and over	88
Less than 65	48

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2017

Hypertension	69
High Cholesterol	49
Stroke	23
Ischemic Heart Disease	35
Depression	28
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2018 were hospital care, inpatient care, sleep study and blood draw.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	74
blood draw	113
doctor visit	848
hospital care	252
inpatient care	252
sleep study	145

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	352
Female	318

**Ethnicity**
Non-Hispanic White	593
Black	21
Hispanic	25
Asian	12
Other	19
Native American	0

**Age**
From 65 to 74	269
From 75 to 84	237
85 and over	106
Less than 65	58

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2018

Hypertension	68
High Cholesterol	62
Stroke	21
Ischemic Heart Disease	37
Depression	28
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	25
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2019 were hospital care, inpatient care, sleep study and blood draw.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	97
blood draw	112
doctor visit	873
hospital care	199
inpatient care	199
sleep study	188

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	327
Female	333

**Ethnicity**
Non-Hispanic White	567
Black	23
Hispanic	31
Asian	15
Other	24
Native American	0

**Age**
From 65 to 74	302
From 75 to 84	207
85 and over	84
Less than 65	67

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2019

Hypertension	68
High Cholesterol	63
Stroke	16
Ischemic Heart Disease	35
Depression	29
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2020 were hospital care, inpatient care, sleep study and blood draw.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	40
blood draw	71
doctor visit	584
hospital care	158
inpatient care	158
sleep study	75

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	320
Female	317

**Ethnicity**
Non-Hispanic White	538
Black	21
Hispanic	33
Asian	17
Other	28
Native American	0

**Age**
From 65 to 74	293
From 75 to 84	221
85 and over	68
Less than 65	55

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2020

Hypertension	68
High Cholesterol	62
Stroke	14
Ischemic Heart Disease	36
Depression	30
Chronic Kidney Disease	35
Asthma	8
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	32
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2021 were hospital care, inpatient care, sleep study and blood draw.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	38
blood draw	140
doctor visit	777
hospital care	158
inpatient care	158
sleep study	144

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	353
Female	351

**Ethnicity**
Non-Hispanic White	612
Black	19
Hispanic	33
Asian	15
Other	25
Native American	0

**Age**
From 65 to 74	300
From 75 to 84	269
85 and over	81
Less than 65	54

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2021

Hypertension	69
High Cholesterol	66
Stroke	17
Ischemic Heart Disease	37
Depression	29
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	20
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL during 2022 were blood draw, hospital care, inpatient care and sleep study.

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

airway management	36
blood draw	157
doctor visit	763
hospital care	132
inpatient care	132
sleep study	129

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	361
Female	356

**Ethnicity**
Non-Hispanic White	611
Black	21
Hispanic	36
Asian	15
Other	34
Native American	0

**Age**
From 65 to 74	322
From 75 to 84	254
85 and over	86
Less than 65	55

Conditions of Medicare patients treated by Dr. Ian S. Katznelson, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	31
Depression	28
Chronic Kidney Disease	21
Asthma	12
Osteoperosis	20
Atrial Fibrilation	21
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	11
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Ian S. Katznelson, MD for Medicare patients.

The highest averages for the top procedures that Dr. Ian S. Katznelson, MD treated as a null in Grayslake, IL were hospital care, inpatient care, diagnostic procedures and sleep study.

airway management	49
blood draw	102
diagnostic procedures	170
doctor visit	757
electroencephalography (EEG)	27
hospital care	204
inpatient care	204
sleep study	106

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Ian S. Katznelson, MD.

**Gender**
Male	289
Female	293

**Ethnicity**
Black / African American	22
Asian / Pacific Islander	6
Non-Hispanic White	511
Native American / Alaskan Native	0
Hispanic	22
Other	11

**Age**
75 to 84	204
85 and over	82
Less than 65	50
65 to 74	247

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

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

Hypertension	63
High Cholesterol	56
Stroke	19
Ischemic Heart Disease	33
Depression	24
Chronic Kidney Disease	26
Asthma	9
Osteoporosis	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Atrial Fibrillation	16
Dementia	16
Cancer	12

Education & Training

Dr. Ian S. Katznelson, MD graduated from Northwestern University, Feinberg School of Medicine in 1998. He completed residency at Barnes-Jewish Hospital. He is certified by the Neurology, American Board of Psychiatry and Neurology and has a state license in Illinois.

Medical School: Northwestern University, Feinberg School of Medicine (1998)

Residency: Barnes-Jewish Hospital (2002)

Board Certification: Neurology, American Board of Psychiatry and Neurology

Licensed In: Illinois

Affiliations & Hospitals

Dr. Ian S. Katznelson, MD is associated with these hospitals and organizations:

Northwestern Medicine

Northwestern University Feinberg School of Medicine

Center for Circadian and Sleep Medicine

Northwestern Medical Group - Neurology Sleep Medicine

Ratings & Reviews

Dr. Ian S. Katznelson, MD has an exceptional overall rating with an average of 4.97 out of 5 stars based on 100 ratings. We collect ratings and reviews of Dr. Ian S. Katznelson, MD from all over the web to help you find the right in Grayslake, IL.

4.97

Overall Rating

(100 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Alexion Pharmaceuticals, Inc.	$1,395 $1,395
AbbVie Inc.	$202 UBRELVY $202
Teva Pharmaceuticals USA, Inc.	$126 AZILECT $75	COPAXONE $51
Cyberonics, Inc.	$80 VNS Therapy $80
Biogen, Inc.	$42 PLEGRIDY $42
Other	$62 OXTELLAR XR $39	VARITHENA $14	(820) Cholbam $9

**Types of Payments**
Consulting Fee	$1,300
Food and Beverage	$542
Education	$64

Biography

Dr. Ian Katznelson sees patients in Park Ridge, IL, Chicago, IL, and Lake Forest, IL. His medical specialties are general practice, neurology (brain & spinal cord disease), and sleep medicine. Patient ratings for Dr. Katznelson average 5.0 stars (out of 5). He is a graduate of Northwestern University, Feinberg School of Medicine. For his residency, Dr. Katznelson trained at Barnes-Jewish Hospital. He has received professional recognition including the following: Distinguished Resident/Resident of the Year Teaching Award, Washington University Medical School and Intern of the Year, Evanston Hospital/McGaw Medical Center of Northwestern University. Dr. Katznelson is affiliated with Northwestern Medical Group (NMG), Northwestern Medicine Lake Forest Hospital, and Northwestern University Feinberg School of Medicine. He has an open panel in Grayslake, IL according to Yext.