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Home > HI Providers > Internists & Internal Medicine Doctors

Dr. Samuel Ernest William Johnsen, MD

Accepting New Patients

(Dr. Samuel E. W. Johnsen, MD)

(3 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

American University of the Caribbean School of Medicine (1992)

40 Kupuohi Street Suite# #204
Lahaina, HI 96761

(808) 214-5985

Dr. Samuel Ernest William Johnsen, MD is an internist in Lahaina, HI specializing in internal medicine (adult medicine). He graduated from American University of the Caribbean School of Medicine in 1992 and has 34 years of experience.

Office Locations

40 Kupuohi Street Suite# #204
Lahaina, HI 96761

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2012 were lab tests, preventive care, vaccines and diabetes management.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

abscess drainage	11
diabetes management	29
doctor visit	1413
ear procedures	18
incision and drainage	11
lab tests	86
minor procedures	11
preventive care	85
skin surgery	11
vaccines	85

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2013 were preventive care, vaccines, ear procedures and lab tests.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1389
ear procedures	28
lab tests	13
preventive care	55
vaccines	55

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	245
Female	211

**Ethnicity**
Non-Hispanic White	246
Black	0
Hispanic	34
Asian	144
Other	0
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	121
85 and over	41
Less than 65	68

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2013

Hypertension	66
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	26
Depression	9
Chronic Kidney Disease	27
Asthma	5
Osteoperosis	3
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	6
Diabetes	30
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2014 were preventive care, vaccines, ear procedures and lab tests.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1230
ear procedures	34
lab tests	14
preventive care	41
vaccines	41

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	216
Female	165

**Ethnicity**
Non-Hispanic White	212
Black	0
Hispanic	0
Asian	117
Other	26
Native American	0

**Age**
From 65 to 74	192
From 75 to 84	102
85 and over	39
Less than 65	48

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2014

Hypertension	68
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	27
Depression	8
Chronic Kidney Disease	33
Asthma	4
Osteoperosis	4
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	33
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2015 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1276
ear procedures	25
lab tests	25
preventive care	71
vaccines	71

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	448
Female	352

**Ethnicity**
Non-Hispanic White	434
Black	0
Hispanic	56
Asian	250
Other	0
Native American	0

**Age**
From 65 to 74	402
From 75 to 84	218
85 and over	92
Less than 65	88

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2015

Hypertension	67
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	26
Depression	10
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	6
Atrial Fibrilation	15
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	30
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2016 were preventive care, vaccines, ear procedures and lab tests.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1262
ear procedures	30
lab tests	15
preventive care	117
vaccines	117

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	207
Female	172

**Ethnicity**
Non-Hispanic White	210
Black	0
Hispanic	25
Asian	115
Other	0
Native American	0

**Age**
From 65 to 74	191
From 75 to 84	107
85 and over	45
Less than 65	36

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2016

Hypertension	66
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	27
Depression	10
Chronic Kidney Disease	36
Asthma	10
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2017 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1239
ear procedures	30
lab tests	36
preventive care	122
vaccines	122

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	225
Female	172

**Ethnicity**
Non-Hispanic White	232
Black	0
Hispanic	0
Asian	113
Other	25
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	118
85 and over	51
Less than 65	33

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2017

Hypertension	65
High Cholesterol	40
Stroke	5
Ischemic Heart Disease	30
Depression	13
Chronic Kidney Disease	40
Asthma	5
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2018 were ear procedures.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	849
ear procedures	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	188
Female	166

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	105
Other	22
Native American	0

**Age**
From 65 to 74	167
From 75 to 84	121
85 and over	44
Less than 65	22

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2018

Hypertension	66
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	27
Depression	12
Chronic Kidney Disease	40
Asthma	6
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	7
Diabetes	27
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2019 were ear procedures.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	1058
ear procedures	32

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	174
Female	148

**Ethnicity**
Non-Hispanic White	199
Black	0
Hispanic	0
Asian	77
Other	27
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	113
85 and over	42
Less than 65	20

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2019

Hypertension	68
High Cholesterol	67
Stroke	3
Ischemic Heart Disease	28
Depression	13
Chronic Kidney Disease	39
Asthma	7
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI during 2020 were ear procedures.

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	648
ear procedures	15

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	129
Female	113

**Ethnicity**
Non-Hispanic White	160
Black	0
Hispanic	0
Asian	51
Other	18
Native American	0

**Age**
From 65 to 74	112
From 75 to 84	90
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2020

Hypertension	69
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	34
Depression	11
Chronic Kidney Disease	42
Asthma	7
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	610

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	116
Female	103

**Ethnicity**
Non-Hispanic White	158
Black	0
Hispanic	0
Asian	41
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	81
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2021

Hypertension	50
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	27
Depression	5
Chronic Kidney Disease	33
Asthma	5
Osteoperosis	5
Atrial Fibrilation	12
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	11
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	585

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	101
Female	90

**Ethnicity**
Non-Hispanic White	141
Black	0
Hispanic	0
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	69
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2022

Hypertension	68
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	24
Depression	9
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	17
Atrial Fibrilation	19
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	11
Dementia	0
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

doctor visit	567

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	101
Female	97

**Ethnicity**
Non-Hispanic White	145
Black	0
Hispanic	0
Asian	33
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	75
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2023

Hypertension	68
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	26
Depression	10
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	6
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Samuel Ernest William Johnsen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Samuel Ernest William Johnsen, MD treated as an internist in Lahaina, HI were preventive care, vaccines, lab tests and diabetes management.

abscess drainage	11
diabetes management	29
doctor visit	1010
ear procedures	25
incision and drainage	11
lab tests	31
minor procedures	11
preventive care	81
skin surgery	11
vaccines	81

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD.

**Gender**
Male	179
Female	149

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	89
Non-Hispanic White	195
Hispanic	9
Native American / Alaskan Native	0
Other	9

**Age**
75 to 84	101
85 and over	29
Less than 65	26
65 to 74	158

Average of Total of Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Samuel Ernest William Johnsen, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	60
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	25
Depression	9
Chronic Kidney Disease	32
Asthma	6
Osteoporosis	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Atrial Fibrillation	13
Cancer	10
Dementia	6

Education & Training

Dr. Samuel Ernest William Johnsen, MD graduated from American University of the Caribbean School of Medicine in 1992. He completed residency at Memorial University Medical Center. He is certified by the American Board of Internal Medicine and has a state license in Hawaii.

Medical School: American University of the Caribbean School of Medicine (1992)

Residency: Memorial University Medical Center (1996)

Board Certification: American Board of Internal Medicine

Licensed In: Hawaii

Ratings & Reviews

Dr. Samuel Ernest William Johnsen, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Samuel Ernest William Johnsen, MD from all over the web to help you find the right in Lahaina, HI.

Overall Rating

(3 Ratings)

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General Payments

These charts describe general payments received by Dr. Samuel Ernest William Johnsen, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Janssen Pharmaceuticals, Inc	$2,068 XARELTO $1,480	INVOKANA $589
Boehringer Ingelheim Pharmaceuticals, Inc.	$1,980 JARDIANCE $1,204	GLYXAMBI $182	STIOLTO RESPIMAT $182	STIOLTO $92	TRADJENTA $89	Other $232
AstraZeneca Pharmaceuticals LP	$1,966 FARXIGA $1,156	SYMBICORT $301	BYDUREON $132	BRILINTA $104	BREZTRI $83	Other $190
Novo Nordisk Inc	$1,435 Tresiba $333	Ozempic $321	RYBELSUS $308	Victoza $219	Xultophy 100/3.6 $57	Other $198
Amarin Pharma Inc.	$980 Vascepa $980
Other	$6,569 NURTEC ODT $571	Prolia $453	UBRELVY $420	Repatha $360	Tymlos $296	Other $4,469

**Types of Payments**
Food and Beverage	$14,603
Education	$396

Biography

Dr. Samuel Johnsen's patients gave him an average rating of 5.0 stars (out of 5). Before completing his residency at Memorial University Medical Center, Dr. Johnsen attended medical school at American University of the Caribbean School of Medicine. He has an open panel in Lahaina, HI according to Yext.

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Dr. Samuel Ernest William Johnsen, MD

Office Locations

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. Samuel Ernest William Johnsen, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Samuel Ernest William Johnsen, MD From 2012 - 2023

Education & Training

Ratings & Reviews

General Payments

Biography

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