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Dr. Karl Knudsen Johsens, MD

Accepting New Patients

(Dr. Karl K. Johsens, MD)

(56 Ratings)

Specializes in: Internal Medicine (Adult Medicine) and Primary Care

University of Hawaii at Manoa, John A. Burns School of Medicine

1595 Soquel Drive Suite 340
Santa Cruz, CA 95065

(831) 425-1679

Dr. Karl Knudsen Johsens, MD is an internist in Santa Cruz, CA specializing in internal medicine (adult medicine) and primary care. He graduated from University of Hawaii at Manoa, John A. Burns School of Medicine. Dr. Karl Knudsen Johsens, MD is affiliated with Dignity Health Medical Network - Santa Cruz.

Office Locations

1595 Soquel Drive Suite 340
Santa Cruz, CA 95065

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Noteworthy Medicare Patient Procedures Performed by Dr. Karl Knudsen Johsens, MD in 2024

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

Top 5%

By Volume:

major joint aspiration

major joint injection

By Affordability:

aspiration

aspiration procedures

joint injections

In 2024, among providers in related specialties within California, Dr. Karl Knudsen Johsens, MD performed more major joint aspiration, and major joint injection procedures for Medicare patients than 95% of them and he also had a list price for aspiration, aspiration procedures, and joint injections that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2012 were nursing home care, hospital care, inpatient care and preventive care.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	15
doctor visit	1275
ear procedures	26
hospital care	222
injections	15
inpatient care	209
lab tests	26
nursing home care	425
outpatient care	13
preventive care	172
vaccines	161

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2013 were nursing home care, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

doctor visit	1282
hospital care	18
inpatient care	18
lab tests	140
nursing home care	759
preventive care	204
vaccines	193

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	253
Female	245

**Ethnicity**
Non-Hispanic White	432
Black	0
Hispanic	31
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	120
85 and over	63
Less than 65	65

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2013

Hypertension	55
High Cholesterol	46
Stroke	5
Ischemic Heart Disease	25
Depression	24
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	13
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2014 were nursing home care, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

doctor visit	1160
ear procedures	14
lab tests	116
nursing home care	711
preventive care	202
vaccines	202

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	256
Female	231

**Ethnicity**
Non-Hispanic White	415
Black	0
Hispanic	29
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	243
From 75 to 84	122
85 and over	68
Less than 65	54

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2014

Hypertension	62
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	27
Depression	21
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	14
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2015 were nursing home care, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

blood draw	35
doctor visit	826
nursing home care	478
preventive care	98
vaccines	98

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	274
Female	264

**Ethnicity**
Non-Hispanic White	474
Black	0
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	224
From 75 to 84	128
85 and over	142
Less than 65	44

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2015

Hypertension	62
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	27
Asthma	13
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	28
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2016 were nursing home care, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

blood draw	34
chronic care	21
doctor visit	841
ear procedures	13
lab tests	23
nursing home care	705
preventive care	128
vaccines	128

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	158
Female	154

**Ethnicity**
Non-Hispanic White	273
Black	0
Hispanic	15
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	76
85 and over	75
Less than 65	33

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2016

Hypertension	57
High Cholesterol	46
Stroke	9
Ischemic Heart Disease	33
Depression	33
Chronic Kidney Disease	35
Asthma	19
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	24
Chronic Obstructive Pulmonary Disease	18
Diabetes	27
Dementia	31
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2017 were nursing home care, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	17
blood draw	59
doctor visit	785
injections	17
nursing home care	1046
preventive care	78
vaccines	78

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	238
Female	233

**Ethnicity**
Non-Hispanic White	404
Black	0
Hispanic	40
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	163
From 75 to 84	126
85 and over	143
Less than 65	39

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2017

Hypertension	68
High Cholesterol	46
Stroke	9
Ischemic Heart Disease	36
Depression	41
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	13
Atrial Fibrilation	18
Heart Failure	32
Chronic Obstructive Pulmonary Disease	20
Diabetes	26
Dementia	35
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2018 were nursing home care, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

blood draw	56
doctor visit	609
nursing home care	800
preventive care	89
vaccines	89

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	174
Female	114

**Ethnicity**
Non-Hispanic White	242
Black	0
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	85
85 and over	39
Less than 65	26

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2018

Hypertension	58
High Cholesterol	50
Stroke	8
Ischemic Heart Disease	26
Depression	30
Chronic Kidney Disease	35
Asthma	8
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	27
Dementia	31
Cancer	7

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2019 were nursing home care, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	15
blood draw	37
doctor visit	669
injections	15
nursing home care	370
preventive care	64
vaccines	64

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	134
Female	90

**Ethnicity**
Non-Hispanic White	192
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	80
85 and over	26
Less than 65	14

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2019

Hypertension	61
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	27
Depression	34
Chronic Kidney Disease	32
Asthma	8
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	17
Diabetes	25
Dementia	23
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2020 were preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

blood draw	16
doctor visit	791
preventive care	84
vaccines	84

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	100
Female	68

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	64
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2020

Hypertension	50
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	26
Depression	25
Chronic Kidney Disease	27
Asthma	8
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2021 were preventive care, vaccines, aspiration and injections.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	15
blood draw	13
doctor visit	804
injections	15
preventive care	65
vaccines	65

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	112
Female	81

**Ethnicity**
Non-Hispanic White	174
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	82
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2021

Hypertension	51
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	6
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2022 were preventive care, vaccines, aspiration and injections.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	15
doctor visit	945
injections	15
preventive care	65
vaccines	65

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	124
Female	80

**Ethnicity**
Non-Hispanic White	183
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	88
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2022

Hypertension	66
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	24
Asthma	14
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2023 were preventive care, vaccines, aspiration and injections.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	14
doctor visit	1106
injections	14
preventive care	56
vaccines	56

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	134
Female	87

**Ethnicity**
Non-Hispanic White	198
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	91
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2023

Hypertension	66
High Cholesterol	68
Stroke	6
Ischemic Heart Disease	24
Depression	24
Chronic Kidney Disease	22
Asthma	17
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	13
Dementia	6
Cancer	14

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA during 2024 were preventive care, vaccines, aspiration and injections.

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

aspiration	16
doctor visit	1219
injections	16
preventive care	56
vaccines	56

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	143
Female	98

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	99
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD in 2024

Hypertension	66
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	27
Asthma	16
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	10
Chronic Obstructive Pulmonary Disease	8
Diabetes	12
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Karl Knudsen Johsens, MD for Medicare patients.

The highest averages for the top procedures that Dr. Karl Knudsen Johsens, MD treated as an internist in Santa Cruz, CA were nursing home care, hospital care, inpatient care and preventive care.

aspiration	15
blood draw	35
chronic care	21
doctor visit	947
ear procedures	17
hospital care	120
injections	15
inpatient care	113
lab tests	76
nursing home care	661
outpatient care	13
preventive care	104
vaccines	103

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Karl Knudsen Johsens, MD.

**Gender**
Male	161
Female	134

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	2
Non-Hispanic White	257
Hispanic	14
Native American / Alaskan Native	0
Other	4

**Age**
75 to 84	89
85 and over	42
Less than 65	21
65 to 74	133

Average of Total of Conditions of Medicare patients treated by Dr. Karl Knudsen Johsens, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Karl Knudsen Johsens, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	55
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	25
Depression	24
Chronic Kidney Disease	26
Asthma	10
Osteoporosis	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	11
Diabetes	19
Atrial Fibrillation	12
Cancer	8
Dementia	14

Education & Training

Dr. Karl Knudsen Johsens, MD graduated from University of Hawaii at Manoa, John A. Burns School of Medicine. He completed residency at Exempla Saint Joseph Hospital, Denver. He is certified by the American Board of Internal Medicine and has a state license in California.

Medical School: University of Hawaii at Manoa, John A. Burns School of Medicine

Residency: Exempla Saint Joseph Hospital, Denver (1996)

Board Certification: American Board of Internal Medicine

Licensed In: California

Ratings & Reviews

Dr. Karl Knudsen Johsens, MD has an exceptional overall rating with an average of 4.69 out of 5 stars based on 56 ratings. We collect ratings and reviews of Dr. Karl Knudsen Johsens, MD from all over the web to help you find the right in Santa Cruz, CA.

4.69

Overall Rating

(56 Ratings)

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General Payments

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

**Payments by Company**
FOREST PHARMACEUTICALS, INC.	$24 VIIBRYD $14	BYSTOLIC $10

**Types of Payments**
Food and Beverage	$24

Biography

Dr. Johsens offers a different approach to primary care with conveniences like same/next-day appointments that start on time and a focus on preventive medicine. His MDVIP-affiliated practice is open to new patients, including Medicare and commercially insured, in Santa Cruz. Dr. Johsens sees fewer patients, which means he has more time to offer. Similar to concierge medicine physicians, Dr. Johsens is available 24/7 by phone. His practice offers the MDVIP Wellness Program, which includes advanced health screenings and diagnostic tests that have been shown to help detect issues earlier.