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Dr. Kenneth G. Halliwell, MD

Accepting New Patients

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Specializes in: Neurology (Brain & Spinal Cord Disease), Pulmonology (Lung & Respiratory Disease) and Sleep Medicine

5300 Military Road
Lewiston, NY 14092

(716) 297-4800

Dr. Kenneth G. Halliwell, MD is a neurologist in Williamsville, NY specializing in neurology (brain & spinal cord disease), pulmonology (lung & respiratory disease) and sleep medicine. Dr. Kenneth G. Halliwell, MD is affiliated with Catholic Health System and Buffalo Medical Group.

Office Locations

325 Essjay Road
Williamsville, NY 14221

open_in_new

5300 Military Road
Lewiston, NY 14092

(716) 297-4800

open_in_new

In The News

“On Aug. 9, 1967, Joe Orton was bludgeoned to death with a hammer by his longtime companion Kenneth Halliwell.”—"What Orton Saw, as Twisted Into 'Butler,' 'Loot'", Los Angeles Times, May 2025

Noteworthy Medicare Patient Procedures Performed by Dr. Kenneth G. Halliwell, MD in 2024

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

Top 25%

By Volume:

home cardiorespiratory sleep study

sleep study with CPAP

In 2012, Dr. Kenneth G. Halliwell, MD performed more home cardiorespiratory (type 3) sleep study, and sleep study with CPAP procedures for Medicare patients than 75% of providers in related specialties within New York.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2012 were sleep study, hospital care, inpatient care and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	127
doctor visit	418
electroencephalography (EEG)	30
hospital care	167
inpatient care	167
sleep study	264

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2013 were sleep study, hospital care, inpatient care and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	86
doctor visit	337
electroencephalography (EEG)	27
hospital care	123
inpatient care	123
sleep study	166

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	123
Female	157

**Ethnicity**
Non-Hispanic White	251
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	73
85 and over	32
Less than 65	86

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	52
Depression	37
Chronic Kidney Disease	25
Asthma	11
Osteoperosis	7
Atrial Fibrilation	20
Heart Failure	34
Chronic Obstructive Pulmonary Disease	24
Diabetes	40
Dementia	16
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2014 were hospital care, inpatient care, sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	80
doctor visit	535
electroencephalography (EEG)	39
hospital care	173
inpatient care	173
sleep study	146

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	157
Female	196

**Ethnicity**
Non-Hispanic White	303
Black	37
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	77
85 and over	50
Less than 65	127

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2014

Hypertension	75
High Cholesterol	71
Stroke	23
Ischemic Heart Disease	48
Depression	39
Chronic Kidney Disease	27
Asthma	14
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	33
Chronic Obstructive Pulmonary Disease	27
Diabetes	45
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2015 were sleep study, hospital care, inpatient care and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	91
doctor visit	475
electroencephalography (EEG)	28
hospital care	114
inpatient care	114
sleep study	194

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	336
Female	374

**Ethnicity**
Non-Hispanic White	624
Black	52
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	144
85 and over	82
Less than 65	242

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2015

Hypertension	75
High Cholesterol	72
Stroke	20
Ischemic Heart Disease	48
Depression	40
Chronic Kidney Disease	28
Asthma	22
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	31
Chronic Obstructive Pulmonary Disease	26
Diabetes	38
Dementia	19
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2016 were sleep study, hospital care, inpatient care and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	132
doctor visit	561
electroencephalography (EEG)	40
hospital care	156
inpatient care	156
sleep study	274

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	204
Female	231

**Ethnicity**
Non-Hispanic White	393
Black	21
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	71
85 and over	53
Less than 65	149

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2016

Hypertension	75
High Cholesterol	70
Stroke	15
Ischemic Heart Disease	45
Depression	39
Chronic Kidney Disease	33
Asthma	35
Osteoperosis	7
Atrial Fibrilation	18
Heart Failure	31
Chronic Obstructive Pulmonary Disease	27
Diabetes	42
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2017 were sleep study, airway management, hospital care and inpatient care.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	180
doctor visit	661
electroencephalography (EEG)	19
hospital care	109
inpatient care	109
sleep study	408

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	247
Female	256

**Ethnicity**
Non-Hispanic White	468
Black	16
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	189
From 75 to 84	96
85 and over	50
Less than 65	168

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2017

Hypertension	75
High Cholesterol	64
Stroke	13
Ischemic Heart Disease	43
Depression	40
Chronic Kidney Disease	34
Asthma	15
Osteoperosis	5
Atrial Fibrilation	17
Heart Failure	32
Chronic Obstructive Pulmonary Disease	24
Diabetes	42
Dementia	13
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2018 were sleep study, airway management, hospital care and inpatient care.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	149
doctor visit	642
electroencephalography (EEG)	18
hospital care	87
inpatient care	87
sleep study	348

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	233
Female	249

**Ethnicity**
Non-Hispanic White	445
Black	17
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	89
85 and over	34
Less than 65	164

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	40
Depression	42
Chronic Kidney Disease	36
Asthma	15
Osteoperosis	4
Atrial Fibrilation	16
Heart Failure	28
Chronic Obstructive Pulmonary Disease	23
Diabetes	43
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2019 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	146
doctor visit	730
sleep study	313

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	211
Female	227

**Ethnicity**
Non-Hispanic White	394
Black	12
Hispanic	0
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	190
From 75 to 84	80
85 and over	17
Less than 65	151

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2019

Hypertension	73
High Cholesterol	74
Stroke	4
Ischemic Heart Disease	36
Depression	41
Chronic Kidney Disease	33
Asthma	15
Osteoperosis	5
Atrial Fibrilation	14
Heart Failure	27
Chronic Obstructive Pulmonary Disease	18
Diabetes	40
Dementia	4
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2020 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	43
doctor visit	531
sleep study	146

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	181
Female	207

**Ethnicity**
Non-Hispanic White	359
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	77
85 and over	18
Less than 65	117

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2020

Hypertension	71
High Cholesterol	62
Stroke	3
Ischemic Heart Disease	34
Depression	36
Chronic Kidney Disease	34
Asthma	12
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	39
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2021 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	77
doctor visit	825
sleep study	231

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	244
Female	278

**Ethnicity**
Non-Hispanic White	490
Black	0
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	267
From 75 to 84	92
85 and over	19
Less than 65	144

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2021

Hypertension	73
High Cholesterol	72
Stroke	3
Ischemic Heart Disease	36
Depression	35
Chronic Kidney Disease	34
Asthma	11
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	40
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2022 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	46
doctor visit	389
sleep study	128

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	171
Female	164

**Ethnicity**
Non-Hispanic White	299
Black	0
Hispanic	0
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	159
From 75 to 84	70
85 and over	16
Less than 65	90

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	28
Depression	27
Chronic Kidney Disease	28
Asthma	13
Osteoperosis	8
Atrial Fibrilation	19
Heart Failure	21
Chronic Obstructive Pulmonary Disease	16
Diabetes	39
Dementia	4
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2023 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	44
doctor visit	169
sleep study	127

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	74
Female	86

**Ethnicity**
Non-Hispanic White	138
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	39
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2023

Hypertension	74
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	24
Depression	34
Chronic Kidney Disease	30
Asthma	11
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	19
Chronic Obstructive Pulmonary Disease	14
Diabetes	25
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY during 2024 were sleep study and airway management.

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

airway management	72
doctor visit	178
sleep study	184

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	97
Female	97

**Ethnicity**
Non-Hispanic White	161
Black	15
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	60
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	35
Depression	34
Chronic Kidney Disease	29
Asthma	12
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	21
Chronic Obstructive Pulmonary Disease	18
Diabetes	31
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Kenneth G. Halliwell, MD for Medicare patients.

The highest averages for the top procedures that Dr. Kenneth G. Halliwell, MD treated as a neurologist in Williamsville, NY were sleep study, hospital care, inpatient care and airway management.

airway management	97
doctor visit	496
electroencephalography (EEG)	28
hospital care	132
inpatient care	132
sleep study	225

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Kenneth G. Halliwell, MD.

**Gender**
Male	175
Female	194

**Ethnicity**
Black / African American	13
Asian / Pacific Islander	0
Non-Hispanic White	332
Native American / Alaskan Native	0
Hispanic	0
Other	5

**Age**
75 to 84	74
85 and over	28
Less than 65	110
65 to 74	149

Average of Total of Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD From 2012 - 2024

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

Hypertension	68
High Cholesterol	66
Stroke	10
Ischemic Heart Disease	36
Depression	34
Chronic Kidney Disease	28
Asthma	14
Osteoporosis	6
Heart Failure	25
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Atrial Fibrillation	15
Dementia	8
Cancer	9

Education & Training

He is certified by the Board Certified in Sleep Medicine and has a state license in New York.

Board Certification: Board Certified in Sleep Medicine

Licensed In: New York

Affiliations & Hospitals

Dr. Kenneth G. Halliwell, MD is associated with these hospitals and organizations:

Catholic Health System

Buffalo Medical Group

Ratings & Reviews

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General Payments

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

**Payments by Company**
Harmony Biosciences LLC	$90,939 Wakix $90,939
IDORSIA PHARMACEUTICALS US INC	$61,657 QUVIVIQ $61,657
Avadel CNS Pharmaceuticals, LLC	$37,143 LUMRYZ $37,143
LivaNova USA, Inc.	$5,007 VNS Therapy $4,093	VNS Therapy SenTiva Model 1000 Generator $745	VNS - Sentiva $169
Jazz Pharmaceuticals Inc.	$754 XYWAV $414	Xyrem $324	SUNOSI $16
Other	$2,840 Inspire $292	Aimovig $288	NUVIGIL $178	SUNOSI $141	TROKENDI XR $137	Other $1,805

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$130,452
Honoraria	$33,200
Travel and Lodging	$21,874
Food and Beverage	$10,567
Consulting Fee	$2,188
Other	$60

Biography

Dr. Kenneth Halliwell is a specialist in sleep medicine. His hospital/clinic affiliations include Buffalo Medical Group and Catholic Health System. Dr. Halliwell's practice in Williamsville, NY is open to new patients as reported by Catholic Health.

Select Year:

Dr. Kenneth G. Halliwell, MD

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Kenneth G. Halliwell, MD in 2024

By Volume:

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. Kenneth G. Halliwell, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Kenneth G. Halliwell, MD From 2012 - 2024

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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