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Dr. Mayumi Oka, MD

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Specializes in: Diagnostic Radiology

8701 Broadway
Merrillville, IN 46410

(219) 738-5565

Dr. Mayumi Oka, MD is a diagnostic radiologist in Merrillville, IN specializing in diagnostic radiology.

Office Locations

8701 Broadway
Merrillville, IN 46410

(219) 738-5565

(219) 738-6714

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2012 were brain imaging (neuroimaging), CT scan, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	58
angioplasty	56
brain imaging (neuroimaging)	1110
catheterization	112
CT scan	953
device removal	18
dialysis access procedures	86
eye procedures	11
minimally invasive procedures	20
MRI (magnetic resonance imaging)	635
neck imaging	70
pelvic imaging	58
spinal procedures	590
thoracic (chest) imaging	283
thrombectomy (blood clot removal)	20
ultrasound (sonogram)	127
vascular procedures	392
X-rays	506

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2013 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	45
angioplasty	64
brain imaging (neuroimaging)	784
catheterization	91
CT scan	590
device removal	15
dialysis access procedures	85
minimally invasive procedures	16
MRI (magnetic resonance imaging)	601
neck imaging	71
pelvic imaging	45
spinal procedures	425
thoracic (chest) imaging	103
thrombectomy (blood clot removal)	16
ultrasound (sonogram)	43
vascular procedures	266
X-rays	198

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	561
Female	751

**Ethnicity**
Non-Hispanic White	473
Black	787
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	406
From 75 to 84	335
85 and over	163
Less than 65	408

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2013

Hypertension	75
High Cholesterol	50
Stroke	29
Ischemic Heart Disease	53
Depression	29
Chronic Kidney Disease	43
Asthma	14
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	45
Chronic Obstructive Pulmonary Disease	37
Diabetes	49
Dementia	26
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2014 were brain imaging (neuroimaging), CT scan, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	53
angioplasty	61
brain imaging (neuroimaging)	689
catheterization	85
CT scan	523
device removal	16
diagnostic procedures	13
dialysis access procedures	86
minimally invasive procedures	26
minor procedures	13
MRI (magnetic resonance imaging)	500
neck imaging	35
pelvic imaging	53
spinal procedures	366
thoracic (chest) imaging	94
thrombectomy (blood clot removal)	13
ultrasound (sonogram)	71
vascular procedures	266
X-rays	210

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	535
Female	764

**Ethnicity**
Non-Hispanic White	455
Black	763
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	409
From 75 to 84	305
85 and over	188
Less than 65	397

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2014

Hypertension	75
High Cholesterol	53
Stroke	27
Ischemic Heart Disease	55
Depression	27
Chronic Kidney Disease	47
Asthma	14
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	48
Chronic Obstructive Pulmonary Disease	36
Diabetes	48
Dementia	25
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2015 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	55
angioplasty	53
aspiration	20
brain imaging (neuroimaging)	556
catheterization	94
CT scan	380
dialysis access procedures	81
minimally invasive procedures	16
MRI (magnetic resonance imaging)	502
neck imaging	56
pelvic imaging	55
spinal procedures	346
thoracic (chest) imaging	60
thrombectomy (blood clot removal)	16
ultrasound (sonogram)	37
vascular procedures	237
X-rays	154

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	888
Female	1296

**Ethnicity**
Non-Hispanic White	786
Black	1274
Hispanic	96
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	778
From 75 to 84	476
85 and over	280
Less than 65	650

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2015

Hypertension	75
High Cholesterol	55
Stroke	29
Ischemic Heart Disease	57
Depression	29
Chronic Kidney Disease	47
Asthma	25
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	46
Chronic Obstructive Pulmonary Disease	37
Diabetes	49
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2016 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	52
angioplasty	56
aspiration	50
bone marrow tests	18
brain imaging (neuroimaging)	560
catheterization	82
CT scan	360
device removal	16
dialysis access procedures	77
minimally invasive procedures	11
MRI (magnetic resonance imaging)	515
neck imaging	39
pelvic imaging	52
spinal procedures	316
thoracic (chest) imaging	66
thrombectomy (blood clot removal)	11
ultrasound (sonogram)	28
vascular procedures	230
X-rays	132

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	444
Female	605

**Ethnicity**
Non-Hispanic White	377
Black	596
Hispanic	55
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	333
From 75 to 84	256
85 and over	145
Less than 65	315

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2016

Hypertension	75
High Cholesterol	54
Stroke	26
Ischemic Heart Disease	57
Depression	25
Chronic Kidney Disease	55
Asthma	39
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	48
Chronic Obstructive Pulmonary Disease	38
Diabetes	52
Dementia	28
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2017 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), spinal procedures and CT scan.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	43
aspiration	26
brain imaging (neuroimaging)	481
catheterization	125
CT scan	326
device removal	12
MRI (magnetic resonance imaging)	455
neck imaging	20
pelvic imaging	43
spinal procedures	342
thoracic (chest) imaging	99
ultrasound (sonogram)	24
vascular procedures	120
X-rays	129

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	453
Female	657

**Ethnicity**
Non-Hispanic White	408
Black	649
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	363
From 75 to 84	274
85 and over	134
Less than 65	339

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2017

Hypertension	75
High Cholesterol	49
Stroke	24
Ischemic Heart Disease	58
Depression	30
Chronic Kidney Disease	59
Asthma	13
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	48
Chronic Obstructive Pulmonary Disease	37
Diabetes	50
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2018 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	46
aspiration	47
brain imaging (neuroimaging)	394
catheterization	150
CT scan	262
device removal	15
MRI (magnetic resonance imaging)	296
neck imaging	31
pelvic imaging	46
pleural drainage	13
spinal procedures	185
ultrasound (sonogram)	40
vascular procedures	149

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	434
Female	530

**Ethnicity**
Non-Hispanic White	352
Black	558
Hispanic	42
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	321
From 75 to 84	228
85 and over	129
Less than 65	286

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2018

Hypertension	75
High Cholesterol	59
Stroke	25
Ischemic Heart Disease	59
Depression	30
Chronic Kidney Disease	60
Asthma	11
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	51
Chronic Obstructive Pulmonary Disease	39
Diabetes	52
Dementia	29
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2019 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	45
aspiration	60
brain imaging (neuroimaging)	557
catheterization	80
CT scan	375
device removal	15
MRI (magnetic resonance imaging)	432
neck imaging	32
pelvic imaging	45
pleural drainage	24
spinal procedures	282
thoracic (chest) imaging	29
ultrasound (sonogram)	55
vascular procedures	190
X-rays	36

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	466
Female	701

**Ethnicity**
Non-Hispanic White	446
Black	652
Hispanic	49
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	384
From 75 to 84	303
85 and over	137
Less than 65	343

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2019

Hypertension	75
High Cholesterol	60
Stroke	28
Ischemic Heart Disease	55
Depression	32
Chronic Kidney Disease	59
Asthma	11
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	51
Chronic Obstructive Pulmonary Disease	38
Diabetes	50
Dementia	30
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2020 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

abdominal imaging	40
aspiration	45
brain imaging (neuroimaging)	423
catheterization	110
CT scan	263
device removal	18
MRI (magnetic resonance imaging)	303
neck imaging	26
pelvic imaging	40
pleural drainage	45
spinal procedures	154
thoracic (chest) imaging	15
ultrasound (sonogram)	11
vascular procedures	103

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	408
Female	534

**Ethnicity**
Non-Hispanic White	370
Black	511
Hispanic	39
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	328
From 75 to 84	239
85 and over	123
Less than 65	252

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2020

Hypertension	75
High Cholesterol	58
Stroke	26
Ischemic Heart Disease	57
Depression	31
Chronic Kidney Disease	65
Asthma	11
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	53
Chronic Obstructive Pulmonary Disease	40
Diabetes	52
Dementia	31
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2021 were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

aspiration	36
brain imaging (neuroimaging)	200
catheterization	46
CT scan	71
MRI (magnetic resonance imaging)	170
pleural drainage	21
spinal procedures	61
vascular procedures	20

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	193
Female	290

**Ethnicity**
Non-Hispanic White	203
Black	254
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	125
85 and over	54
Less than 65	132

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2021

Hypertension	75
High Cholesterol	61
Stroke	26
Ischemic Heart Disease	55
Depression	33
Chronic Kidney Disease	65
Asthma	11
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	56
Chronic Obstructive Pulmonary Disease	38
Diabetes	53
Dementia	34
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2023 were brain imaging (neuroimaging), CT scan, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

brain imaging (neuroimaging)	166
CT scan	142
MRI (magnetic resonance imaging)	93
spinal procedures	69

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	101
Female	156

**Ethnicity**
Non-Hispanic White	220
Black	18
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	86
85 and over	49
Less than 65	24

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	34
Ischemic Heart Disease	41
Depression	43
Chronic Kidney Disease	38
Asthma	14
Osteoperosis	22
Atrial Fibrilation	25
Heart Failure	32
Chronic Obstructive Pulmonary Disease	28
Diabetes	38
Dementia	21
Cancer	20

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN during 2024 were brain imaging (neuroimaging), CT scan, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

brain imaging (neuroimaging)	169
CT scan	165
MRI (magnetic resonance imaging)	82
spinal procedures	64

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	126
Female	171

**Ethnicity**
Non-Hispanic White	266
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	113
85 and over	64
Less than 65	25

Conditions of Medicare patients treated by Dr. Mayumi Oka, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	28
Ischemic Heart Disease	43
Depression	40
Chronic Kidney Disease	35
Asthma	13
Osteoperosis	21
Atrial Fibrilation	29
Heart Failure	31
Chronic Obstructive Pulmonary Disease	27
Diabetes	35
Dementia	22
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Mayumi Oka, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mayumi Oka, MD treated as a diagnostic radiologist in Merrillville, IN were brain imaging (neuroimaging), MRI (magnetic resonance imaging), CT scan and spinal procedures.

abdominal imaging	48
angioplasty	58
aspiration	40
bone marrow tests	18
brain imaging (neuroimaging)	507
catheterization	97
CT scan	367
device removal	15
diagnostic procedures	13
dialysis access procedures	83
eye procedures	11
minimally invasive procedures	17
minor procedures	13
MRI (magnetic resonance imaging)	382
neck imaging	42
pelvic imaging	48
pleural drainage	25
spinal procedures	266
thoracic (chest) imaging	93
thrombectomy (blood clot removal)	15
ultrasound (sonogram)	48
vascular procedures	197
X-rays	195

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Mayumi Oka, MD.

**Gender**
Male	384
Female	537

**Ethnicity**
Black / African American	506
Asian / Pacific Islander	0
Non-Hispanic White	363
Native American / Alaskan Native	0
Hispanic	29
Other	0

**Age**
75 to 84	228
85 and over	122
Less than 65	264
65 to 74	307

Average of Total of Conditions of Medicare patients treated by Dr. Mayumi Oka, MD From 2012 - 2024

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

Hypertension	68
High Cholesterol	54
Stroke	25
Ischemic Heart Disease	49
Depression	29
Chronic Kidney Disease	47
Asthma	14
Osteoporosis	11
Heart Failure	42
Chronic Obstructive Pulmonary Disease	32
Diabetes	44
Atrial Fibrillation	16
Cancer	14
Dementia	25

Education & Training

She has a state license in Indiana.

Licensed In: Indiana

Ratings & Reviews

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General Payments

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

**Payments by Company**
Bard Peripheral Vascular, Inc.	$18,809 BPV-Glidepath Catheter $18,389	BPV-Lutonix $139	LUTONIX $105	$176
Penumbra, Inc.	$1,962 REAL System $1,037	Penumbra System $660	Penumbra Smart Coil $259	Penumbra Coil 400 $6
Stryker Corporation	$779 NEURO $442	FlowGate $137	STENTS $129	Trevo $71
Medtronic USA, Inc.	$419 KYPHON Balloon Kyphoplasty $235	Concerto $115	Solitaire $52	PIPELINE $17
Genentech USA, Inc.	$380 Activase $105	$275
Other	$1,323 MAGNETOM Aera $132	VIABAHN Endoprosthesis with PRO $127	EKOSONIC $105	CFN PleurX $103	Pradaxa $100	Other $756