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Dr. Dennis Steven Orwig, MD

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Specializes in: Diagnostic Radiology

University of California, San Francisco (UCSF), School of Medicine

250 Bon Air Road
Greenbrae, CA 94904

(415) 925-7000

Dr. Dennis Steven Orwig, MD is a diagnostic radiologist in Greenbrae, CA specializing in diagnostic radiology. He graduated from University of California, San Francisco (UCSF), School of Medicine. Dr. Dennis Steven Orwig, MD is affiliated with Marin General Hospital.

Office Locations

Marin General Hospital

250 Bon Air Road
Greenbrae, CA 94904

(415) 925-7000

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2012 were X-rays, thoracic (chest) imaging, CT scan and women's imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	492
aspiration	22
brain imaging (neuroimaging)	492
breast procedures	568
cardiac procedures	16
CT scan	945
diagnostic imaging	76
gastrointestinal procedures	24
hip imaging	96
MRI (magnetic resonance imaging)	199
musculoskeletal imaging	268
neck imaging	68
nuclear scan	44
pelvic imaging	374
pleural drainage	22
preventive care	466
spinal procedures	238
stress testing	16
thoracic (chest) imaging	1723
ultrasound (sonogram)	446
vascular procedures	182
women's imaging	595
X-rays	2517

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2013 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	526
aspiration	40
brain imaging (neuroimaging)	496
breast procedures	327
cardiac procedures	11
CT scan	1042
diagnostic imaging	15
diagnostic procedures	20
gastrointestinal procedures	18
hip imaging	169
image guided procedures	20
minimally invasive procedures	20
minor procedures	20
MRI (magnetic resonance imaging)	240
musculoskeletal imaging	411
neck imaging	32
nuclear scan	44
pelvic imaging	461
pleural drainage	20
preventive care	296
spinal procedures	295
stress testing	11
thoracic (chest) imaging	1599
ultrasound (sonogram)	407
vascular procedures	135
women's imaging	353
X-rays	2286

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1300
Female	1970

**Ethnicity**
Non-Hispanic White	2900
Black	62
Hispanic	152
Asian	98
Other	0
Native American	0

**Age**
From 65 to 74	1215
From 75 to 84	1013
85 and over	756
Less than 65	286

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2013

Hypertension	66
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	37
Depression	24
Chronic Kidney Disease	27
Asthma	11
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	24
Dementia	18
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2014 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	489
aspiration	42
brain imaging (neuroimaging)	449
breast procedures	234
CT scan	886
diagnostic imaging	20
diagnostic procedures	16
gastrointestinal procedures	22
hip imaging	123
image guided procedures	16
minimally invasive procedures	16
minor procedures	16
MRI (magnetic resonance imaging)	243
musculoskeletal imaging	355
neck imaging	40
nuclear scan	23
pelvic imaging	428
pleural drainage	11
preventive care	214
spinal procedures	305
thoracic (chest) imaging	1850
ultrasound (sonogram)	419
vascular procedures	181
women's imaging	266
X-rays	2526

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1295
Female	1932

**Ethnicity**
Non-Hispanic White	2823
Black	77
Hispanic	149
Asian	108
Other	0
Native American	0

**Age**
From 65 to 74	1245
From 75 to 84	953
85 and over	750
Less than 65	279

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2014

Hypertension	64
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	39
Depression	24
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	21
Chronic Obstructive Pulmonary Disease	16
Diabetes	24
Dementia	17
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2015 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	580
aspiration	52
brain imaging (neuroimaging)	497
breast procedures	347
CT scan	1069
diagnostic imaging	47
diagnostic procedures	16
gastrointestinal procedures	32
hip imaging	146
image guided procedures	16
minimally invasive procedures	16
minor procedures	16
MRI (magnetic resonance imaging)	209
musculoskeletal imaging	461
neck imaging	56
nuclear scan	16
pelvic imaging	523
pleural drainage	16
preventive care	264
spinal procedures	352
thoracic (chest) imaging	2133
ultrasound (sonogram)	543
vascular procedures	179
women's imaging	381
X-rays	3070

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	2954
Female	4548

**Ethnicity**
Non-Hispanic White	6526
Black	0
Hispanic	366
Asian	270
Other	174
Native American	0

**Age**
From 65 to 74	2986
From 75 to 84	2276
85 and over	1664
Less than 65	576

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2015

Hypertension	62
High Cholesterol	54
Stroke	11
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	27
Asthma	14
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	22
Dementia	17
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2016 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	671
aspiration	53
brain imaging (neuroimaging)	512
breast procedures	496
CT scan	1214
diagnostic imaging	60
diagnostic procedures	20
gastrointestinal procedures	28
image guided procedures	20
minimally invasive procedures	20
minor procedures	20
MRI (magnetic resonance imaging)	208
musculoskeletal imaging	392
neck imaging	64
nuclear scan	21
pelvic imaging	505
pleural drainage	16
preventive care	370
spinal procedures	440
thoracic (chest) imaging	2168
ultrasound (sonogram)	592
vascular procedures	179
women's imaging	528
X-rays	3096

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1606
Female	2490

**Ethnicity**
Non-Hispanic White	3555
Black	0
Hispanic	186
Asian	147
Other	117
Native American	0

**Age**
From 65 to 74	1663
From 75 to 84	1233
85 and over	909
Less than 65	291

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2016

Hypertension	63
High Cholesterol	53
Stroke	10
Ischemic Heart Disease	36
Depression	23
Chronic Kidney Disease	29
Asthma	19
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	20
Chronic Obstructive Pulmonary Disease	15
Diabetes	23
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2017 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	418
aspiration	17
brain imaging (neuroimaging)	354
breast procedures	308
CT scan	819
diagnostic imaging	35
gastrointestinal procedures	13
MRI (magnetic resonance imaging)	131
musculoskeletal imaging	249
neck imaging	27
nuclear scan	11
pelvic imaging	375
pleural drainage	17
preventive care	239
spinal procedures	253
thoracic (chest) imaging	1339
ultrasound (sonogram)	384
vascular procedures	141
women's imaging	330
X-rays	1885

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1044
Female	1745

**Ethnicity**
Non-Hispanic White	2431
Black	0
Hispanic	118
Asian	97
Other	73
Native American	0

**Age**
From 65 to 74	1108
From 75 to 84	913
85 and over	571
Less than 65	197

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2017

Hypertension	64
High Cholesterol	52
Stroke	11
Ischemic Heart Disease	37
Depression	25
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	22
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2018 were CT scan, X-rays, abdominal imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	450
aspiration	11
brain imaging (neuroimaging)	400
breast procedures	318
CT scan	946
diagnostic imaging	42
gastrointestinal procedures	15
MRI (magnetic resonance imaging)	149
musculoskeletal imaging	269
neck imaging	35
pelvic imaging	420
pleural drainage	11
preventive care	240
spinal procedures	280
thoracic (chest) imaging	193
ultrasound (sonogram)	440
vascular procedures	146
women's imaging	351
X-rays	749

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1245
Female	1991

**Ethnicity**
Non-Hispanic White	2794
Black	0
Hispanic	149
Asian	116
Other	97
Native American	0

**Age**
From 65 to 74	1237
From 75 to 84	1112
85 and over	652
Less than 65	235

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2018

Hypertension	64
High Cholesterol	56
Stroke	10
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	22
Chronic Obstructive Pulmonary Disease	16
Diabetes	23
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2019 were CT scan, X-rays, ultrasound (sonogram) and abdominal imaging.

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	525
aspiration	20
brain imaging (neuroimaging)	430
breast procedures	227
CT scan	956
diagnostic imaging	39
gastrointestinal procedures	19
MRI (magnetic resonance imaging)	162
musculoskeletal imaging	458
neck imaging	65
pelvic imaging	427
pleural drainage	20
preventive care	134
spinal procedures	295
thoracic (chest) imaging	212
ultrasound (sonogram)	649
vascular procedures	230
women's imaging	265
X-rays	884

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1456
Female	2165

**Ethnicity**
Non-Hispanic White	3110
Black	0
Hispanic	158
Asian	132
Other	123
Native American	0

**Age**
From 65 to 74	1408
From 75 to 84	1249
85 and over	712
Less than 65	252

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2019

Hypertension	64
High Cholesterol	57
Stroke	10
Ischemic Heart Disease	36
Depression	28
Chronic Kidney Disease	33
Asthma	9
Osteoperosis	15
Atrial Fibrilation	18
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	21
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA during 2020 were CT scan, X-rays, pelvic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

abdominal imaging	132
brain imaging (neuroimaging)	108
breast procedures	28
CT scan	267
MRI (magnetic resonance imaging)	20
musculoskeletal imaging	140
neck imaging	23
pelvic imaging	149
preventive care	28
spinal procedures	49
thoracic (chest) imaging	61
ultrasound (sonogram)	146
vascular procedures	52
women's imaging	44
X-rays	214

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	445
Female	667

**Ethnicity**
Non-Hispanic White	961
Black	23
Hispanic	48
Asian	41
Other	39
Native American	0

**Age**
From 65 to 74	429
From 75 to 84	394
85 and over	228
Less than 65	61

Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD in 2020

Hypertension	62
High Cholesterol	54
Stroke	11
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	16
Atrial Fibrilation	17
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	21
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2020

Volume of procedures performed by Dr. Dennis Steven Orwig, MD for Medicare patients.

The highest averages for the top procedures that Dr. Dennis Steven Orwig, MD treated as a diagnostic radiologist in Greenbrae, CA were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

abdominal imaging	475
aspiration	32
brain imaging (neuroimaging)	415
breast procedures	317
cardiac procedures	13
CT scan	904
diagnostic imaging	41
diagnostic procedures	18
gastrointestinal procedures	21
hip imaging	133
image guided procedures	18
minimally invasive procedures	18
minor procedures	18
MRI (magnetic resonance imaging)	173
musculoskeletal imaging	333
neck imaging	45
nuclear scan	26
pelvic imaging	406
pleural drainage	16
preventive care	250
spinal procedures	278
stress testing	13
thoracic (chest) imaging	1253
ultrasound (sonogram)	447
vascular procedures	158
women's imaging	345
X-rays	1914

Average Medicare Patient Data From 2012 - 2020

Information about Medicare patients treated by Dr. Dennis Steven Orwig, MD.

**Gender**
Male	1260
Female	1945

**Ethnicity**
Black / African American	18
Asian / Pacific Islander	112
Non-Hispanic White	2788
Native American / Alaskan Native	0
Hispanic	147
Other	69

**Age**
75 to 84	1015
85 and over	693
Less than 65	241
65 to 74	1254

Average of Total of Conditions of Medicare patients treated by Dr. Dennis Steven Orwig, MD From 2012 - 2020

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

Hypertension	56
High Cholesterol	48
Stroke	9
Ischemic Heart Disease	32
Depression	22
Chronic Kidney Disease	27
Asthma	10
Osteoporosis	11
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	20
Atrial Fibrillation	16
Dementia	15
Cancer	13

Education & Training

Dr. Dennis Steven Orwig, MD graduated from University of California, San Francisco (UCSF), School of Medicine. He completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. He is certified by the American Board of Radiology and has a state license in California.

Medical School: University of California, San Francisco (UCSF), School of Medicine

Residency: University of California, San Francisco (UCSF) Affiliated Hospitals

Board Certification: American Board of Radiology

Licensed In: California

Affiliations & Hospitals

Dr. Dennis Steven Orwig, MD is associated with these hospitals and organizations:

Marin General Hospital

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General Payments

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

**Payments by Company**
Genentech USA, Inc.	$101 Esbriet $101

**Types of Payments**
Food and Beverage	$101

Biography

Dr. Dennis Orwig specializes in diagnostic radiology. He is affiliated with Marin General Hospital. Before performing his residency at a hospital affiliated with the University of California, San Francisco (UCSF), Dr. Orwig attended the University of California, San Francisco (UCSF), School of Medicine. Dr. Orwig has received the following distinction: Top Doctor Marin Magazine.