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Home > CA Providers > Vascular Surgeons

Dr. Mark L. Janzen, MD

(Dr. Mark Laverne Janzen, MD)

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Specializes in: Vascular Surgery and Trauma Surgery

10800 Magnolia Avenue
Riverside, CA 92505

(440) 781-0931

Dr. Mark L. Janzen, MD is a vascular surgeon in Riverside, CA specializing in vascular surgery and trauma surgery. Dr. Mark L. Janzen, MD is affiliated with ENLOE MEDICAL CENTER.

Office Locations

10800 Magnolia Avenue
Riverside, CA 92505

(440) 781-0931

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark L. Janzen, MD in 2023

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

Top 5%

By Volume:

abdominal aortogram

angiogram

extremity arteriogram

In 2023, Dr. Mark L. Janzen, MD performed more abdominal aortogram, angiogram (angiography), and extremity arteriogram procedures for Medicare patients than 95% of providers in related specialties within California.

Top 25%

By Volume:

inpatient hospital care

By Affordability:

hospital care

inpatient care

inpatient hospital care

In 2012, among providers in related specialties within California, Dr. Mark L. Janzen, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and he also had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) that was lower than the list prices billed to Medicare by 75% 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. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

doctor visit	183
hospital care	51
inpatient care	51

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA during 2013 were hospital care, inpatient care, vascular procedures and angioplasty.

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

angioplasty	33
dialysis access procedures	20
doctor visit	331
hospital care	217
inpatient care	217
minimally invasive procedures	14
vascular procedures	95
X-rays	20

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Gender**
Male	128
Female	130

**Ethnicity**
Non-Hispanic White	218
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	93
From 75 to 84	62
85 and over	22
Less than 65	81

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2013

Hypertension	75
High Cholesterol	59
Stroke	9
Ischemic Heart Disease	55
Depression	34
Chronic Kidney Disease	48
Asthma	12
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	42
Chronic Obstructive Pulmonary Disease	36
Diabetes	46
Dementia	13
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA during 2014 were hospital care, inpatient care, vascular procedures and X-rays.

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

dialysis access procedures	17
doctor visit	368
hospital care	235
inpatient care	235
vascular procedures	45
X-rays	17

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Gender**
Male	146
Female	128

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

**Age**
From 65 to 74	103
From 75 to 84	67
85 and over	13
Less than 65	91

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2014

Hypertension	75
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	61
Depression	43
Chronic Kidney Disease	54
Asthma	8
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	44
Chronic Obstructive Pulmonary Disease	38
Diabetes	53
Dementia	12
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA during 2015 were hospital care, inpatient care and vascular procedures.

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

doctor visit	331
hospital care	136
inpatient care	136
vascular procedures	28

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Gender**
Male	302
Female	284

**Ethnicity**
Non-Hispanic White	518
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	222
From 75 to 84	146
85 and over	42
Less than 65	176

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2015

Hypertension	75
High Cholesterol	66
Stroke	11
Ischemic Heart Disease	61
Depression	37
Chronic Kidney Disease	51
Asthma	18
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	42
Chronic Obstructive Pulmonary Disease	37
Diabetes	45
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA during 2016 were hospital care, inpatient care and vascular procedures.

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

doctor visit	348
hospital care	70
inpatient care	70
vascular procedures	45

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Gender**
Male	145
Female	143

**Ethnicity**
Non-Hispanic White	253
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	76
85 and over	24
Less than 65	89

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2016

Hypertension	75
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	63
Depression	32
Chronic Kidney Disease	55
Asthma	37
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	38
Chronic Obstructive Pulmonary Disease	38
Diabetes	49
Dementia	16
Cancer	9

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2017

Hypertension	75
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	73
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2019

Hypertension	75
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	67
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	62
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2020

Hypertension	70
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	65
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	60
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	14

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2021

Hypertension	64
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	0
Depression	39
Chronic Kidney Disease	57
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

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

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	15

Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD in 2022

Hypertension	75
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	58
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark L. Janzen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark L. Janzen, MD treated as a vascular surgeon in Riverside, CA were hospital care, inpatient care, vascular procedures and angioplasty.

angioplasty	33
dialysis access procedures	18
doctor visit	312
hospital care	141
inpatient care	141
minimally invasive procedures	14
vascular procedures	53
X-rays	18

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark L. Janzen, MD.

**Gender**
Male	72
Female	68

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	124
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	35
85 and over	10
Less than 65	46
65 to 74	51

Average of Total of Conditions of Medicare patients treated by Dr. Mark L. Janzen, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark L. Janzen, MD treated were hypertension, chronic kidney disease, diabetes and high cholesterol.

Hypertension	65
High Cholesterol	42
Stroke	4
Ischemic Heart Disease	24
Depression	18
Chronic Kidney Disease	54
Asthma	7
Osteoporosis	3
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	52
Atrial Fibrillation	6
Cancer	3
Dementia	5

Education & Training

He has a state license in Ohio.

Licensed In: Ohio

Affiliations & Hospitals

Dr. Mark L. Janzen, MD is associated with these hospitals and organizations:

ENLOE MEDICAL CENTER

Ratings & Reviews

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General Payments

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

**Payments by Company**
Avinger Inc.	$777 Vascular Disease $197	$581
Medtronic, Inc.	$509 HawkOne $326	ENDURANT IIS $164	VenaSeal $19
W. L. Gore & Associates, Inc.	$497 EXCLUDER AAA Endoprosthesis $191	C3 Delivery System $135	GORE EXCLUDER Iliac Branch Endoprosthesis $124	VIABAHN Endoprosthesis $33	VIABAHN Endoprosthesis with Hep $13
Endologix, Inc.	$442 AFX $442
ShockWave Medical, Inc	$157 SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER $157
Other	$660 Supera peripheral stent system $125	Cook Medical Zilver PTX $77	XARELTO $46	S.M.A.R.T. CONTROL Self-Expanding Nitinol Stent $42	guidewires $33	Other $338