Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers

Dr. Robert Ouwendijk, MD

(No ratings)

Specializes in: Medical Oncology and Adult Oncology

3291 Loma Vista Road
Ventura, CA 93003

(805) 652-6556

Dr. Robert Ouwendijk, MD is a medical oncologist in Ventura, CA specializing in medical oncology and adult oncology.

Office Locations

3291 Loma Vista Road
Ventura, CA 93003

open_in_new

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	299

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	229

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	21
Female	41

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	32
From 75 to 84	17
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2013

Hypertension	65
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	40
Dementia	0
Cancer	69

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	202

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	21
Female	27

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

**Age**
From 65 to 74	16
From 75 to 84	0
85 and over	0
Less than 65	17

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2014

Hypertension	52
High Cholesterol	33
Stroke	0
Ischemic Heart Disease	0
Depression	23
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	33
Dementia	0
Cancer	58

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	239

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	58
Female	84

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	90
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	42
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2015

Hypertension	56
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	17
Depression	21
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	35
Dementia	0
Cancer	68

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	358

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	42
Female	50

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	57
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	0
85 and over	0
Less than 65	25

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2016

Hypertension	61
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	21
Depression	16
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	45
Dementia	0
Cancer	71

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	296

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	39
Female	42

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

**Age**
From 65 to 74	40
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2017

Hypertension	67
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	25
Depression	22
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	46
Dementia	0
Cancer	63

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	367

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	53
Female	57

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	64
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2018

Hypertension	66
High Cholesterol	36
Stroke	11
Ischemic Heart Disease	27
Depression	25
Chronic Kidney Disease	43
Asthma	0
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	43
Dementia	13
Cancer	57

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2018

Volume of procedures performed by Dr. Robert Ouwendijk, MD for Medicare patients.

doctor visit	284

Average Medicare Patient Data From 2012 - 2018

Information about Medicare patients treated by Dr. Robert Ouwendijk, MD.

**Gender**
Male	33
Female	43

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	0
Native American / Alaskan Native	0
Hispanic	45
Other	0

**Age**
75 to 84	14
85 and over	0
Less than 65	6
65 to 74	34

Average of Total of Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD From 2012 - 2018

The highest averages of the most common conditions of Medicare patients that Dr. Robert Ouwendijk, MD treated were cancer, hypertension, diabetes and high cholesterol.

Hypertension	52
High Cholesterol	31
Stroke	1
Ischemic Heart Disease	12
Depression	15
Chronic Kidney Disease	26
Asthma	1
Osteoporosis	4
Heart Failure	5
Chronic Obstructive Pulmonary Disease	6
Diabetes	34
Atrial Fibrillation	0
Dementia	1
Cancer	55

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Robert Ouwendijk, MD does not have any reviews yet, be the first to leave a review of Dr. Robert Ouwendijk, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

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

**Payments by Company**
Celgene Corporation	$611 Abraxane $262	None $153	Revlimid $45	Pomalyst $29	$121
AstraZeneca Pharmaceuticals LP	$604 TAGRISSO $230	LYNPARZA $151	CALQUENCE $124	IMFINZI $98
Genentech USA, Inc.	$565 Gazyva $142	Rituxan $121	Avastin $117	TECENTRIQ $105	TARCEVA $20	Other $60
TESARO, Inc.	$465 ZEJULA $445	VARUBI $20
E.R. Squibb & Sons, L.L.C.	$241 OPDIVO $160	ERBITUX $81
Other	$1,274 Kyprolis $135	KEYTRUDA $125	LIBTAYO $116	JEVTANA $98	YONSA $98	Other $701

**Types of Payments**
Food and Beverage	$3,758

Biography

Dr. Robert Ouwendijk, who practices in Ventura, CA, is a medical specialist in adult oncology and medical oncology. Dr. Ouwendijk has obtained a license to practice in California.

Select Year:

Dr. Robert Ouwendijk, 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. Robert Ouwendijk, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD in 2018

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2018

Average Medicare Patient Data From 2012 - 2018

Average of Total of Conditions of Medicare patients treated by Dr. Robert Ouwendijk, MD From 2012 - 2018

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Ventura, CA