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Dr. Brian Kaoru Nagai, MD

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Specializes in: Diagnostic Radiology

Stanford University School of Medicine

4050 Dublin Boulevard
Dublin, CA 94568

(925) 875-6105

Dr. Brian Kaoru Nagai, MD is a diagnostic radiologist in Fremont, CA specializing in diagnostic radiology. He graduated from Stanford University School of Medicine. Dr. Brian Kaoru Nagai, MD is affiliated with Sutter Health.

Office Locations

Sutter Health

3200 Kearney Street Building 1, Floor 1
Fremont, CA 94538

(510) 498-2770

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Sutter Health

4050 Dublin Boulevard
Dublin, CA 94568

(925) 875-6105

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Sutter Health

795 El Camino Real
Palo Alto, CA 94301

(650) 853-2955

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Noteworthy Medicare Patient Procedures Performed by Dr. Brian Kaoru Nagai, MD in 2023

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

Top 25%

By Volume:

neck imaging

ultrasound

In 2012, Dr. Brian Kaoru Nagai, MD performed more neck imaging, and ultrasound (sonogram) procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2012 were X-rays, thoracic (chest) imaging, CT scan and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	534
aspiration	69
brain imaging (neuroimaging)	631
cardiac procedures	16
CT scan	1230
diagnostic procedures	17
gastrointestinal procedures	21
hip imaging	92
image guided procedures	17
minimally invasive procedures	17
minor procedures	17
MRI (magnetic resonance imaging)	274
musculoskeletal imaging	153
neck imaging	130
nuclear scan	16
pelvic imaging	476
pleural drainage	32
spinal procedures	178
stress testing	16
thoracic (chest) imaging	1999
ultrasound (sonogram)	356
vascular procedures	309
women's imaging	13
X-rays	2117

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2013 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	577
aspiration	39
brain imaging (neuroimaging)	512
CT scan	1278
diagnostic procedures	13
hip imaging	43
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
MRI (magnetic resonance imaging)	228
musculoskeletal imaging	174
neck imaging	39
nuclear scan	14
pelvic imaging	493
pleural drainage	26
spinal procedures	196
thoracic (chest) imaging	1665
ultrasound (sonogram)	327
vascular procedures	190
women's imaging	16
X-rays	1633

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	1239
Female	1483

**Ethnicity**
Non-Hispanic White	2434
Black	65
Hispanic	117
Asian	61
Other	0
Native American	0

**Age**
From 65 to 74	1009
From 75 to 84	810
85 and over	629
Less than 65	274

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2013

Hypertension	65
High Cholesterol	53
Stroke	13
Ischemic Heart Disease	40
Depression	24
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	9
Atrial Fibrilation	20
Heart Failure	25
Chronic Obstructive Pulmonary Disease	19
Diabetes	25
Dementia	20
Cancer	20

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2014 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	647
aspiration	13
brain imaging (neuroimaging)	468
CT scan	1308
hip imaging	82
MRI (magnetic resonance imaging)	207
musculoskeletal imaging	187
neck imaging	54
pelvic imaging	545
pleural drainage	13
spinal procedures	229
thoracic (chest) imaging	1715
ultrasound (sonogram)	372
vascular procedures	173
women's imaging	20
X-rays	1726

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	1277
Female	1656

**Ethnicity**
Non-Hispanic White	2539
Black	77
Hispanic	164
Asian	94
Other	0
Native American	0

**Age**
From 65 to 74	1093
From 75 to 84	878
85 and over	648
Less than 65	314

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2014

Hypertension	64
High Cholesterol	54
Stroke	13
Ischemic Heart Disease	40
Depression	24
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	24
Chronic Obstructive Pulmonary Disease	18
Diabetes	25
Dementia	18
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2015 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	596
aspiration	26
brain imaging (neuroimaging)	491
CT scan	1109
gastrointestinal procedures	15
hip imaging	95
MRI (magnetic resonance imaging)	234
musculoskeletal imaging	217
neck imaging	61
nuclear scan	20
pelvic imaging	529
pleural drainage	26
spinal procedures	233
thoracic (chest) imaging	1901
ultrasound (sonogram)	421
vascular procedures	149
women's imaging	43
X-rays	2055

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	2692
Female	3316

**Ethnicity**
Non-Hispanic White	5232
Black	172
Hispanic	254
Asian	208
Other	0
Native American	0

**Age**
From 65 to 74	2230
From 75 to 84	1880
85 and over	1386
Less than 65	512

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2015

Hypertension	64
High Cholesterol	55
Stroke	13
Ischemic Heart Disease	38
Depression	26
Chronic Kidney Disease	29
Asthma	15
Osteoperosis	10
Atrial Fibrilation	21
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	23
Dementia	19
Cancer	17

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2016 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	395
brain imaging (neuroimaging)	255
breast procedures	14
CT scan	680
hip imaging	28
MRI (magnetic resonance imaging)	245
musculoskeletal imaging	128
neck imaging	54
pelvic imaging	343
preventive care	14
spinal procedures	124
thoracic (chest) imaging	883
ultrasound (sonogram)	292
vascular procedures	64
women's imaging	38
X-rays	807

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	891
Female	1280

**Ethnicity**
Non-Hispanic White	1691
Black	0
Hispanic	121
Asian	230
Other	73
Native American	0

**Age**
From 65 to 74	964
From 75 to 84	679
85 and over	380
Less than 65	148

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2016

Hypertension	59
High Cholesterol	51
Stroke	8
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	28
Asthma	16
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	23
Dementia	14
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2017 were ultrasound (sonogram), X-rays, thoracic (chest) imaging and CT scan.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	336
brain imaging (neuroimaging)	156
breast procedures	45
CT scan	351
hip imaging	55
MRI (magnetic resonance imaging)	320
musculoskeletal imaging	171
neck imaging	89
pelvic imaging	309
preventive care	45
spinal procedures	159
thoracic (chest) imaging	382
ultrasound (sonogram)	487
vascular procedures	87
women's imaging	92
X-rays	445

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	760
Female	1133

**Ethnicity**
Non-Hispanic White	1236
Black	0
Hispanic	120
Asian	385
Other	96
Native American	0

**Age**
From 65 to 74	950
From 75 to 84	609
85 and over	244
Less than 65	90

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2017

Hypertension	53
High Cholesterol	44
Stroke	4
Ischemic Heart Disease	23
Depression	18
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	21
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2018 were ultrasound (sonogram), CT scan, abdominal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	386
brain imaging (neuroimaging)	186
CT scan	453
eye procedures	13
hip imaging	47
MRI (magnetic resonance imaging)	348
musculoskeletal imaging	176
neck imaging	107
pelvic imaging	310
spinal procedures	165
thoracic (chest) imaging	161
ultrasound (sonogram)	463
vascular procedures	84
women's imaging	36
X-rays	165

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	733
Female	1072

**Ethnicity**
Non-Hispanic White	1180
Black	0
Hispanic	105
Asian	374
Other	97
Native American	0

**Age**
From 65 to 74	873
From 75 to 84	616
85 and over	232
Less than 65	84

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2018

Hypertension	56
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	13
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2019 were ultrasound (sonogram), abdominal imaging, CT scan and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	391
brain imaging (neuroimaging)	188
CT scan	369
hip imaging	52
MRI (magnetic resonance imaging)	335
musculoskeletal imaging	192
neck imaging	134
pelvic imaging	321
spinal procedures	161
thoracic (chest) imaging	140
ultrasound (sonogram)	594
vascular procedures	145
women's imaging	46
X-rays	192

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	753
Female	1136

**Ethnicity**
Non-Hispanic White	1154
Black	0
Hispanic	118
Asian	438
Other	134
Native American	0

**Age**
From 65 to 74	903
From 75 to 84	676
85 and over	236
Less than 65	74

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2019

Hypertension	55
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	14
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2020 were ultrasound (sonogram), CT scan, MRI (magnetic resonance imaging) and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	291
brain imaging (neuroimaging)	176
CT scan	318
hip imaging	34
MRI (magnetic resonance imaging)	315
musculoskeletal imaging	111
neck imaging	76
pelvic imaging	257
spinal procedures	165
thoracic (chest) imaging	135
ultrasound (sonogram)	387
vascular procedures	90
women's imaging	32
X-rays	131

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	586
Female	864

**Ethnicity**
Non-Hispanic White	928
Black	0
Hispanic	79
Asian	299
Other	104
Native American	0

**Age**
From 65 to 74	676
From 75 to 84	522
85 and over	184
Less than 65	68

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2020

Hypertension	50
High Cholesterol	49
Stroke	3
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	14
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	21
Dementia	9
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2021 were ultrasound (sonogram), CT scan, MRI (magnetic resonance imaging) and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	366
brain imaging (neuroimaging)	237
CT scan	463
eye procedures	12
hip imaging	41
MRI (magnetic resonance imaging)	436
musculoskeletal imaging	158
neck imaging	107
pelvic imaging	364
spinal procedures	203
thoracic (chest) imaging	173
ultrasound (sonogram)	521
vascular procedures	107
women's imaging	51
X-rays	131

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	723
Female	1026

**Ethnicity**
Non-Hispanic White	1104
Black	46
Hispanic	84
Asian	385
Other	130
Native American	0

**Age**
From 65 to 74	809
From 75 to 84	657
85 and over	219
Less than 65	64

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2021

Hypertension	55
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	24
Depression	16
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	18
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	23
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Brian Kaoru Nagai, MD treated as a diagnostic radiologist in Fremont, CA during 2022 were ultrasound (sonogram), MRI (magnetic resonance imaging), CT scan and abdominal imaging.

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

abdominal imaging	319
brain imaging (neuroimaging)	213
CT scan	369
eye procedures	17
hip imaging	25
MRI (magnetic resonance imaging)	381
musculoskeletal imaging	114
neck imaging	90
pelvic imaging	312
spinal procedures	190
thoracic (chest) imaging	146
ultrasound (sonogram)	453
vascular procedures	110
women's imaging	44
X-rays	136

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	703
Female	939

**Ethnicity**
Non-Hispanic White	1054
Black	0
Hispanic	84
Asian	351
Other	124
Native American	0

**Age**
From 65 to 74	745
From 75 to 84	611
85 and over	229
Less than 65	57

Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD in 2022

Hypertension	65
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	24
Depression	15
Chronic Kidney Disease	19
Asthma	11
Osteoperosis	23
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	5
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Brian Kaoru Nagai, MD for Medicare patients.

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

abdominal imaging	439
aspiration	36
brain imaging (neuroimaging)	319
breast procedures	29
cardiac procedures	16
CT scan	720
diagnostic procedures	15
eye procedures	14
gastrointestinal procedures	18
hip imaging	54
image guided procedures	15
minimally invasive procedures	15
minor procedures	15
MRI (magnetic resonance imaging)	302
musculoskeletal imaging	161
neck imaging	85
nuclear scan	16
pelvic imaging	387
pleural drainage	24
preventive care	29
spinal procedures	182
stress testing	16
thoracic (chest) imaging	845
ultrasound (sonogram)	424
vascular procedures	137
women's imaging	39
X-rays	867

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Brian Kaoru Nagai, MD.

**Gender**
Male	941
Female	1264

**Ethnicity**
Black / African American	32
Asian / Pacific Islander	256
Non-Hispanic White	1686
Native American / Alaskan Native	0
Hispanic	113
Other	68

**Age**
75 to 84	721
85 and over	398
Less than 65	153
65 to 74	932

Average of Total of Conditions of Medicare patients treated by Dr. Brian Kaoru Nagai, MD From 2012 - 2022

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

Hypertension	53
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	22
Asthma	8
Osteoporosis	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Atrial Fibrillation	13
Dementia	10
Cancer	14

Education & Training

Dr. Brian Kaoru Nagai, MD graduated from Stanford University School of Medicine. He completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. He is certified by the Board Certification: Radiology and has a state license in Nevada.

Medical School: Stanford University School of Medicine

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

Board Certification: Board Certification: Radiology

Licensed In: Nevada

Affiliations & Hospitals

Dr. Brian Kaoru Nagai, MD is associated with these hospitals and organizations:

Sutter Health

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Brian Kaoru Nagai, MD appears to accept the following insurance providers: Blue Shield of California, Medicare Advantage, HealthSmart, MultiPlan, United Healthcare, TRICARE, Cigna, Alliance PPO, Anthem Blue Cross of California, Private Healthcare Systems (PHCS), Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only, Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP), Accepted SCAN Plans: SCAN Compass (HMO), Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP), Accepted Provider Networks of America Plans: PPO, Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO, Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including... and Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund....

Insurance Accepted by Provider includes:

According to our sources, Dr. Brian Kaoru Nagai, MD accepts the following insurance providers:

Blue Shield of California

Medicare Advantage

HealthSmart

MultiPlan

United Healthcare

TRICARE

Cigna

Alliance PPO

Anthem Blue Cross of California

Private Healthcare Systems (PHCS)

Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only

Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP)

Accepted SCAN Plans: SCAN Compass (HMO)

Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP)

Accepted Provider Networks of America Plans: PPO

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including...

Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund...

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Biography

Dr. Brian Nagai's area of specialization is diagnostic radiology. His clinical interests encompass neuroradiology. He is professionally affiliated with Sutter Health. Dr. Nagai seems to be an in-network provider for Anthem, Blue California, and HealthSmart, as well as other insurance carriers. After attending Stanford University School of Medicine, Dr. Nagai completed his residency training at a hospital affiliated with the University of California, San Francisco (UCSF).