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Home > MT Providers > Neurologists

Dr. Anthony Williamson, MD, PhD

Accepting New Patients

(50 Ratings)

Specializes in: Neurology (Brain & Spinal Cord Disease)

University of Arkansas for Medical Sciences College of Medicine

Professional interests include: neurological disorders

2525 E. Broadway
Helena, MT 59601

(406) 457-4180

Dr. Anthony Williamson, MD, PhD is a neurologist in Helena, MT specializing in neurology (brain & spinal cord disease). He graduated from University of Arkansas for Medical Sciences College of Medicine. Dr. Anthony Williamson, MD, PhD is affiliated with St. Peter's Health System.

Office Locations

St. Peter's Health System

2525 E. Broadway
Helena, MT 59601

(406) 457-4180

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Noteworthy Medicare Patient Procedures Performed by Dr. Anthony Williamson, MD, PhD in 2023

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

Top 25%

By Volume:

electroencephalography

In 2012, Dr. Anthony Williamson, MD, PhD performed more electroencephalography (EEG) procedures for Medicare patients than 75% of providers in related specialties within Montana.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2012 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	896
doctor visit	705
electroencephalography (EEG)	40

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2013 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	122
doctor visit	832
electroencephalography (EEG)	19

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	122
Female	183

**Ethnicity**
Non-Hispanic White	288
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	107
85 and over	30
Less than 65	81

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2013

Hypertension	49
High Cholesterol	27
Stroke	10
Ischemic Heart Disease	25
Depression	43
Chronic Kidney Disease	17
Asthma	5
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	15
Diabetes	26
Dementia	25
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2014 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	87
doctor visit	759
electroencephalography (EEG)	13

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	116
Female	195

**Ethnicity**
Non-Hispanic White	296
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	113
85 and over	30
Less than 65	82

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2014

Hypertension	51
High Cholesterol	29
Stroke	11
Ischemic Heart Disease	25
Depression	42
Chronic Kidney Disease	14
Asthma	5
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	19
Dementia	23
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2015 were electroencephalography (EEG), diagnostic procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	82
doctor visit	565
electroencephalography (EEG)	130
hospital care	26
inpatient care	26

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	280
Female	392

**Ethnicity**
Non-Hispanic White	638
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	234
From 75 to 84	158
85 and over	74
Less than 65	206

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2015

Hypertension	61
High Cholesterol	41
Stroke	16
Ischemic Heart Disease	26
Depression	48
Chronic Kidney Disease	23
Asthma	15
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	27
Diabetes	25
Dementia	20
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2016 were electroencephalography (EEG), diagnostic procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	68
doctor visit	606
electroencephalography (EEG)	164
hospital care	13
inpatient care	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	182
Female	256

**Ethnicity**
Non-Hispanic White	422
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	163
From 75 to 84	115
85 and over	50
Less than 65	110

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2016

Hypertension	58
High Cholesterol	37
Stroke	13
Ischemic Heart Disease	26
Depression	48
Chronic Kidney Disease	27
Asthma	26
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	19
Chronic Obstructive Pulmonary Disease	26
Diabetes	24
Dementia	24
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2017 were electroencephalography (EEG) and diagnostic procedures.

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	54
doctor visit	549
electroencephalography (EEG)	60

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	182
Female	220

**Ethnicity**
Non-Hispanic White	387
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	144
From 75 to 84	115
85 and over	34
Less than 65	109

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2017

Hypertension	52
High Cholesterol	32
Stroke	9
Ischemic Heart Disease	25
Depression	50
Chronic Kidney Disease	24
Asthma	4
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	19
Diabetes	24
Dementia	24
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2018 were electroencephalography (EEG), diagnostic procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	65
doctor visit	618
electroencephalography (EEG)	72
hospital care	11
inpatient care	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	195
Female	238

**Ethnicity**
Non-Hispanic White	410
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	107
85 and over	31
Less than 65	119

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2018

Hypertension	52
High Cholesterol	33
Stroke	11
Ischemic Heart Disease	23
Depression	45
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	18
Diabetes	0
Dementia	20
Cancer	4

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2019 were electroencephalography (EEG) and diagnostic procedures.

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	25
doctor visit	474
electroencephalography (EEG)	35

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	174
Female	204

**Ethnicity**
Non-Hispanic White	357
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	146
From 75 to 84	115
85 and over	36
Less than 65	81

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2019

Hypertension	56
High Cholesterol	44
Stroke	9
Ischemic Heart Disease	24
Depression	41
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	9
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	13
Diabetes	21
Dementia	20
Cancer	6

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2020 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	96
doctor visit	717
electroencephalography (EEG)	44

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	188
Female	224

**Ethnicity**
Non-Hispanic White	376
Black	17
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	164
85 and over	51
Less than 65	19

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2020

Hypertension	67
High Cholesterol	66
Stroke	15
Ischemic Heart Disease	30
Depression	26
Chronic Kidney Disease	24
Asthma	5
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	19
Dementia	23
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2021 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	86
doctor visit	896
electroencephalography (EEG)	69

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	202
Female	230

**Ethnicity**
Non-Hispanic White	397
Black	15
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	192
85 and over	59
Less than 65	16

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2021

Hypertension	69
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	35
Depression	29
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	20
Dementia	25
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT during 2022 were diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

diagnostic procedures	67
doctor visit	1055
electroencephalography (EEG)	63

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	229
Female	292

**Ethnicity**
Non-Hispanic White	484
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	233
85 and over	70
Less than 65	17

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2022

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	22
Depression	26
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	16
Atrial Fibrilation	19
Heart Failure	7
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	16
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Anthony Williamson, MD, PhD for Medicare patients.

The highest averages for the top procedures that Dr. Anthony Williamson, MD, PhD treated as a neurologist in Helena, MT were diagnostic procedures, electroencephalography (EEG), hospital care and inpatient care.

diagnostic procedures	149
doctor visit	706
electroencephalography (EEG)	64
hospital care	16
inpatient care	16

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Anthony Williamson, MD, PhD.

**Gender**
Male	170
Female	221

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	0
Non-Hispanic White	368
Native American / Alaskan Native	0
Hispanic	0
Other	1

**Age**
75 to 84	129
85 and over	42
Less than 65	76
65 to 74	143

Average of Total of Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Anthony Williamson, MD, PhD treated were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension	53
High Cholesterol	41
Stroke	12
Ischemic Heart Disease	23
Depression	36
Chronic Kidney Disease	19
Asthma	7
Osteoporosis	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	17
Atrial Fibrillation	9
Dementia	20
Cancer	8

Education & Training

Dr. Anthony Williamson, MD, PhD graduated from University of Arkansas for Medical Sciences College of Medicine. He completed residency at University of Utah Affiliated Hospitals. He has a state license in Montana.

Medical School: University of Arkansas for Medical Sciences College of Medicine

Residency: University of Utah Affiliated Hospitals

Licensed In: Montana

Affiliations & Hospitals

Dr. Anthony Williamson, MD, PhD is associated with these hospitals and organizations:

St. Peter's Health System

Ratings & Reviews

Dr. Anthony Williamson, MD, PhD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 50 ratings. We collect ratings and reviews of Dr. Anthony Williamson, MD, PhD from all over the web to help you find the right in Helena, MT.

Overall Rating

(50 Ratings)

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General Payments

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

**Payments by Company**
Biogen, Inc.	$440 TECFIDERA $198	TYSABRI $102	ZINBRYTA $96	PLEGRIDY $44
Supernus Pharmaceuticals, Inc.	$388 TROKENDI XR $343	$45
GENZYME CORPORATION	$236 LEMTRADA $158	AUBAGIO $78
Lilly USA, LLC	$206 BASAGLAR $124	TRULICITY $82
Purdue Pharma L.P.	$190 OXYCONTIN $68	INTERMEZZO $67	BUTRANS $30	HYSINGLA ER $25
Other	$1,472 Gilenya $163	NAMZARIC $97	QUDEXY XR Topiramate Extended Release Capsules $71	ELIQUIS $67	AMITIZA $60	Other $1,015

**Types of Payments**
Food and Beverage	$2,762
Education	$131
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$39

Biography

Dr. Anthony Williamson's area of specialization is neurology (brain & spinal cord disease). Before performing his residency at a hospital affiliated with the University of Utah, Dr. Williamson attended the University of Arkansas for Medical Sciences College of Medicine for medical school. Dr. Williamson has indicated that his clinical interests include neurological disorders. He has received a 5.0 out of 5 star rating by his patients. He is professionally affiliated with St. Peter's Health System. Dr. Williamson welcomes new patients at his office inHelena, MT as reported by St. Peter's Health.

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Dr. Anthony Williamson, MD, PhD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Anthony Williamson, MD, PhD in 2023

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. Anthony Williamson, MD, PhD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Anthony Williamson, MD, PhD 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. Anthony Williamson, MD, PhD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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