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Dr. Masaru Ishii, PHD, MD

(Masaru Ishii, MD)

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Specializes in: General Surgery, Neurosurgery and Otolaryngology (Ear Nose and Throat)

601 North Caroline Street Floor 6 Johns Hopkins Outpatient Center
Baltimore, MD 21287

(443) 997-6467

Dr. Masaru Ishii, PHD, MD is a general surgeon in Baltimore, MD specializing in general surgery, neurosurgery and otolaryngology (ear nose and throat). Dr. Masaru Ishii, PHD, MD is affiliated with Johns Hopkins Medicine - White Marsh.

Office Locations

601 North Caroline Street Floor 6 Johns Hopkins Outpatient Center
Baltimore, MD 21287

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10803 Falls Road Pavilion III SUITE 2300 Johns Hopkins Medicine
Lutherville, MD 21093

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Masaru Ishii, PHD, MD treated as a general surgeon in Baltimore, MD during 2012 were minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	288
laryngeal (voice box) procedures	27
minimally invasive procedures	27

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Masaru Ishii, PHD, MD treated as a general surgeon in Baltimore, MD during 2013 were minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	286
laryngeal (voice box) procedures	17
minimally invasive procedures	17

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	74
Female	78

**Ethnicity**
Non-Hispanic White	98
Black	42
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	36
85 and over	11
Less than 65	33

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2013

Hypertension	72
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	37
Depression	17
Chronic Kidney Disease	24
Asthma	16
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	14
Chronic Obstructive Pulmonary Disease	17
Diabetes	34
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	279

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	61
Female	85

**Ethnicity**
Non-Hispanic White	100
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	0
85 and over	0
Less than 65	34

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2014

Hypertension	68
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	35
Depression	30
Chronic Kidney Disease	23
Asthma	16
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	279

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	116
Female	172

**Ethnicity**
Non-Hispanic White	190
Black	76
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	82
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2015

Hypertension	69
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	31
Depression	24
Chronic Kidney Disease	23
Asthma	22
Osteoperosis	8
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	321

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	65
Female	92

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

**Age**
From 65 to 74	73
From 75 to 84	42
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2016

Hypertension	73
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	38
Depression	29
Chronic Kidney Disease	30
Asthma	31
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	16
Diabetes	29
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	340

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	81
Female	93

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

**Age**
From 65 to 74	87
From 75 to 84	44
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2017

Hypertension	70
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	25
Asthma	22
Osteoperosis	7
Atrial Fibrilation	6
Heart Failure	18
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	315

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	89
Female	97

**Ethnicity**
Non-Hispanic White	129
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2018

Hypertension	73
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	34
Depression	27
Chronic Kidney Disease	24
Asthma	19
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	255

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	77
Female	89

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

**Age**
From 65 to 74	94
From 75 to 84	35
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2019

Hypertension	69
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	31
Depression	29
Chronic Kidney Disease	23
Asthma	15
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	8
Chronic Obstructive Pulmonary Disease	15
Diabetes	25
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	159

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	53
Female	71

**Ethnicity**
Non-Hispanic White	80
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	39
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2020

Hypertension	60
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	35
Depression	31
Chronic Kidney Disease	24
Asthma	21
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	28
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	180

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	55
Female	64

**Ethnicity**
Non-Hispanic White	79
Black	29
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	35
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2021

Hypertension	67
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	41
Depression	24
Chronic Kidney Disease	21
Asthma	21
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

doctor visit	175

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	62
Female	76

**Ethnicity**
Non-Hispanic White	87
Black	33
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD in 2022

Hypertension	72
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	28
Asthma	29
Osteoperosis	15
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Masaru Ishii, PHD, MD for Medicare patients.

The highest averages for the top procedures that Dr. Masaru Ishii, PHD, MD treated as a general surgeon in Baltimore, MD were minimally invasive procedures and laryngeal (voice box) procedures.

doctor visit	261
laryngeal (voice box) procedures	22
minimally invasive procedures	22

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Masaru Ishii, PHD, MD.

**Gender**
Male	66
Female	83

**Ethnicity**
Black / African American	16
Asian / Pacific Islander	0
Non-Hispanic White	101
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	37
85 and over	1
Less than 65	6
65 to 74	75

Average of Total of Conditions of Medicare patients treated by Dr. Masaru Ishii, PHD, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Masaru Ishii, PHD, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	63
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	22
Asthma	19
Osteoporosis	5
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Atrial Fibrillation	8
Dementia	0
Cancer	9

Education & Training

He has a state license in Maryland.

Licensed In: Maryland

Affiliations & Hospitals

Dr. Masaru Ishii, PHD, MD is associated with these hospitals and organizations:

Johns Hopkins Medicine - White Marsh

Ratings & Reviews

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General Payments

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

**Payments by Company**
KARL STORZ Endoscopy-America	$1,500 PUNCH, FRONTAL , SINUS $1,500
Intersect ENT, Inc.	$174 Propel $174
DePuy Synthes Sales Inc.	$105 TRUMATCH $105
Stryker Corporation	$39 Core $26	ESSX $13

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$1,500
Food and Beverage	$318

Biography

Dr. Masaru Ishii, who practices in Baltimore, MD and Lutherville, MD, is a medical specialist in general surgery, neurosurgery, and otolaryngology (ear, nose, and throat). He studied medicine at the University of Pennsylvania School of Medicine. He is professionally affiliated with Johns Hopkins University.