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Dr. David Aloysius Ketelaar, MD

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Specializes in: Emergency Medicine

1400 E Church Street
Santa Maria, CA 93454

(805) 739-3200

Dr. David Aloysius Ketelaar, MD is an emergency medicine doctor in Santa Maria, CA specializing in emergency medicine.

Office Locations

1400 E Church Street
Santa Maria, CA 93454

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In The News (see more mentions in the news)

“A Santa Maria hospital's crisis stabilization unit has treated almost 600 patients in its first year of operation, emergency medicine Dr. David Ketelaar told the Santa Barbara County Board of...”—"Santa Maria Crisis Stabilization Unit Serves Hundreds of Patients in First Year | Local News | Noozhawk", Noozhawk, September 2023

“It is not unusual to wait several hours for a mobile crisis team to arrive to do the evaluation, further lengthening the time that acute mental health patients are stuck in emergency room...”—"Santa Barbara County's Shortage of Psychiatric Acute Care Beds Leads to Long Waits, ER Holds | Mental Health Care in Crisis", Noozhawk, April 2022

“Noozhawk would like to thank Suzanne Grimmesey and the county Department of Behavioral Wellness, Dr. David Ketelaar of Marian Regional Medical Center, Cottage Health, Lynne Gibbs from the National...”—"Santa Barbara County Underutilizing Its Highly Anticipated Crisis Stabilization Unit | Mental Health Care in Crisis", Noozhawk, April 2022

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2012 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	388

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2013 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	352

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	175
Female	180

**Ethnicity**
Non-Hispanic White	215
Black	0
Hispanic	113
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	84
From 75 to 84	109
85 and over	69
Less than 65	93

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2013

Hypertension	75
High Cholesterol	54
Stroke	8
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	39
Asthma	12
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	38
Chronic Obstructive Pulmonary Disease	26
Diabetes	47
Dementia	21
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2014 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	284

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	138
Female	162

**Ethnicity**
Non-Hispanic White	193
Black	0
Hispanic	79
Asian	12
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2014

Hypertension	75
High Cholesterol	48
Stroke	7
Ischemic Heart Disease	38
Depression	33
Chronic Kidney Disease	35
Asthma	11
Osteoperosis	18
Atrial Fibrilation	16
Heart Failure	30
Chronic Obstructive Pulmonary Disease	25
Diabetes	40
Dementia	20
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2015 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	400

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	344
Female	464

**Ethnicity**
Non-Hispanic White	496
Black	0
Hispanic	248
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	216
From 75 to 84	200
85 and over	194
Less than 65	198

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2015

Hypertension	75
High Cholesterol	54
Stroke	10
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	39
Asthma	19
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	27
Chronic Obstructive Pulmonary Disease	23
Diabetes	40
Dementia	20
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2016 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	242

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	112
Female	153

**Ethnicity**
Non-Hispanic White	161
Black	0
Hispanic	86
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	61
From 75 to 84	80
85 and over	64
Less than 65	60

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2016

Hypertension	75
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	40
Depression	28
Chronic Kidney Disease	50
Asthma	32
Osteoperosis	15
Atrial Fibrilation	20
Heart Failure	36
Chronic Obstructive Pulmonary Disease	29
Diabetes	43
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2017 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	195

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	99
Female	109

**Ethnicity**
Non-Hispanic White	135
Black	0
Hispanic	60
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	62
85 and over	54
Less than 65	41

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2017

Hypertension	75
High Cholesterol	50
Stroke	14
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	49
Asthma	8
Osteoperosis	15
Atrial Fibrilation	17
Heart Failure	30
Chronic Obstructive Pulmonary Disease	27
Diabetes	38
Dementia	26
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA during 2018 were emergency care.

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

emergency care	17

Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD in 2018

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

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2018

Volume of procedures performed by Dr. David Aloysius Ketelaar, MD for Medicare patients.

The highest averages for the top procedures that Dr. David Aloysius Ketelaar, MD treated as an emergency medicine doctor in Santa Maria, CA were emergency care.

emergency care	268

Average Medicare Patient Data From 2012 - 2018

Information about Medicare patients treated by Dr. David Aloysius Ketelaar, MD.

**Gender**
Male	124
Female	152

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	5
Non-Hispanic White	171
Native American / Alaskan Native	0
Hispanic	83
Other	0

**Age**
75 to 84	76
85 and over	63
Less than 65	66
65 to 74	69

Average of Total of Conditions of Medicare patients treated by Dr. David Aloysius Ketelaar, MD From 2012 - 2018

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

Hypertension	64
High Cholesterol	47
Stroke	6
Ischemic Heart Disease	27
Depression	21
Chronic Kidney Disease	30
Asthma	11
Osteoporosis	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Atrial Fibrillation	11
Dementia	15
Cancer	8

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

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General Payments

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

**Payments by Company**
Genentech, Inc.	$83 $83
BioFire Diagnostics, LLC	$10 FilmArray System $10

**Types of Payments**
Food and Beverage	$93

Biography

Dr. David Ketelaar, who practices in Santa Maria, CA, is a medical specialist in emergency medicine. Dr. Ketelaar has obtained a license to practice in California.