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Home > RI Providers > Neurologists

Dr. Gary D. Johnson, MD

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Specializes in: Neurology (Brain & Spinal Cord Disease)

1 James P Murphy Ind Highway Suite 120
West Warwick, RI 02893

(401) 606-4600

Dr. Gary D. Johnson, MD is a neurologist in West Warwick, RI specializing in neurology (brain & spinal cord disease).

Office Locations

1 James P Murphy Ind Highway Suite 120
West Warwick, RI 02893

(401) 606-4600

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593 Eddy Street
Providence, RI 02903

(401) 444-3032

(401) 444-3205

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900 Douglas Pike
Smithfield, RI 02917

(401) 618-5507

1-866-228-6713

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2012 were diagnostic procedures, electroencephalography (EEG), hospital care and inpatient care.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	112
doctor visit	252
electroencephalography (EEG)	104
hospital care	64
inpatient care	64

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2013 were electroencephalography (EEG), hospital care, inpatient care and diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	11
doctor visit	252
electroencephalography (EEG)	91
hospital care	65
inpatient care	65

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	133
Female	230

**Ethnicity**
Non-Hispanic White	311
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	86
85 and over	62
Less than 65	105

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2013

Hypertension	75
High Cholesterol	65
Stroke	25
Ischemic Heart Disease	39
Depression	45
Chronic Kidney Disease	32
Asthma	13
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	27
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2014 were electroencephalography (EEG), hospital care and inpatient care.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

doctor visit	236
electroencephalography (EEG)	113
hospital care	75
inpatient care	75

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	149
Female	226

**Ethnicity**
Non-Hispanic White	316
Black	25
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	83
85 and over	65
Less than 65	120

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2014

Hypertension	73
High Cholesterol	64
Stroke	27
Ischemic Heart Disease	40
Depression	45
Chronic Kidney Disease	32
Asthma	14
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	17
Diabetes	33
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2015 were hospital care, inpatient care, electroencephalography (EEG) and minimally invasive procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

doctor visit	211
electroencephalography (EEG)	72
hospital care	123
injections	22
inpatient care	123
minimally invasive procedures	22

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	246
Female	442

**Ethnicity**
Non-Hispanic White	556
Black	56
Hispanic	44
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	158
85 and over	98
Less than 65	206

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2015

Hypertension	72
High Cholesterol	65
Stroke	28
Ischemic Heart Disease	38
Depression	42
Chronic Kidney Disease	31
Asthma	22
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2016 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	24
doctor visit	183

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	74
Female	111

**Ethnicity**
Non-Hispanic White	171
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	47
85 and over	15
Less than 65	57

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2016

Hypertension	69
High Cholesterol	53
Stroke	15
Ischemic Heart Disease	26
Depression	34
Chronic Kidney Disease	22
Asthma	18
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	18
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2017 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	75
doctor visit	246

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	96
Female	145

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

**Age**
From 65 to 74	100
From 75 to 84	67
85 and over	17
Less than 65	57

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2017

Hypertension	68
High Cholesterol	39
Stroke	14
Ischemic Heart Disease	31
Depression	34
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2018 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	62
doctor visit	378

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	156
Female	184

**Ethnicity**
Non-Hispanic White	300
Black	0
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	113
85 and over	45
Less than 65	53

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2018

Hypertension	75
High Cholesterol	62
Stroke	15
Ischemic Heart Disease	40
Depression	36
Chronic Kidney Disease	31
Asthma	13
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	17
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	19
Cancer	17

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2019 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	55
doctor visit	433

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	149
Female	205

**Ethnicity**
Non-Hispanic White	325
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	123
85 and over	35
Less than 65	63

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2019

Hypertension	72
High Cholesterol	58
Stroke	9
Ischemic Heart Disease	32
Depression	32
Chronic Kidney Disease	30
Asthma	10
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	26
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2020 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	109
doctor visit	283

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	154
Female	218

**Ethnicity**
Non-Hispanic White	341
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	106
85 and over	41
Less than 65	67

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2020

Hypertension	63
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	31
Depression	31
Chronic Kidney Disease	26
Asthma	11
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI during 2021 were diagnostic procedures.

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

diagnostic procedures	82
doctor visit	357

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	168
Female	211

**Ethnicity**
Non-Hispanic White	348
Black	0
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	129
85 and over	48
Less than 65	49

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2021

Hypertension	63
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	29
Depression	28
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	14
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

doctor visit	88

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	47
Female	62

**Age**
From 65 to 74	42
From 75 to 84	47
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	27
Depression	29
Chronic Kidney Disease	24
Asthma	17
Osteoperosis	17
Atrial Fibrilation	15
Heart Failure	10
Chronic Obstructive Pulmonary Disease	13
Diabetes	32
Dementia	19
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gary D. Johnson, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gary D. Johnson, MD treated as a neurologist in West Warwick, RI were electroencephalography (EEG), hospital care, inpatient care and diagnostic procedures.

diagnostic procedures	66
doctor visit	265
electroencephalography (EEG)	95
hospital care	81
injections	22
inpatient care	81
minimally invasive procedures	22

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gary D. Johnson, MD.

**Gender**
Male	124
Female	184

**Ethnicity**
Black / African American	9
Asian / Pacific Islander	0
Non-Hispanic White	262
Native American / Alaskan Native	0
Hispanic	5
Other	2

**Age**
75 to 84	87
85 and over	38
Less than 65	70
65 to 74	111

Average of Total of Conditions of Medicare patients treated by Dr. Gary D. Johnson, MD From 2012 - 2022

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

Hypertension	64
High Cholesterol	54
Stroke	15
Ischemic Heart Disease	30
Depression	32
Chronic Kidney Disease	25
Asthma	12
Osteoporosis	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Atrial Fibrillation	11
Dementia	18
Cancer	12

Education & Training

He has a state license in Rhode Island.

Licensed In: Rhode Island

Ratings & Reviews

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General Payments

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

**Payments by Company**
Teva Pharmaceuticals USA, Inc.	$617 AUSTEDO $388	Zecuity $123	COPAXONE $103	Unclassified $2
Allergan Inc.	$428 BOTOX $354	Botox Therapeutic $74
Novartis Pharmaceuticals Corporation	$246 Gilenya $224	$23
Mallinckrodt LLC	$239 ACTHAR $239
US WORLDMEDS, LLC	$202 MYOBLOC $173	APOKYN $30
Other	$1,020 TECFIDERA $197	AMPYRA $141	Dysport 300 U-1 $119	AUBAGIO $85	UBRELVY $53	Other $425

**Types of Payments**
Food and Beverage	$2,372
Education	$215
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$141
Travel and Lodging	$21
Gift	$4

Biography

Dr. Gary Johnson, who practices in Smithfield, RI, Providence, RI, and West Warwick, RI, is a medical specialist in neurology (brain & spinal cord disease). He graduated from the University of Pennsylvania School of Medicine.