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Dr. John T. Yamashita, MD

(Dr. John Yamashita, M.D.)

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Specializes in: Pathology

George Washington University School of Medicine and Health Sciences (1991)

15031 Rinaldi Street Department of Pathology
Mission Hills, CA 91345

(818) 898-4412

Dr. John T. Yamashita, MD is a pathologist in Mission Hills, CA specializing in pathology. He graduated from George Washington University School of Medicine and Health Sciences in 1991 and has 35 years of experience. Dr. John T. Yamashita, MD is affiliated with PATHOLOGY ASSOCIATES OF SOUTHERN CALIFORNIA.

Office Locations

15031 Rinaldi Street Department of Pathology
Mission Hills, CA 91345

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Noteworthy Medicare Patient Procedures Performed by Dr. John T. Yamashita, MD in 2023

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

Top 10%

By Volume:

intraoperative pathology consultation

In 2023, Dr. John T. Yamashita, MD performed more intraoperative pathology consultation procedures for Medicare patients than 90% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2012 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	133
cytology	226
lab tests	747

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2013 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	133
cytology	244
lab tests	670

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	382
Female	440

**Ethnicity**
Non-Hispanic White	390
Black	36
Hispanic	323
Asian	54
Other	0
Native American	0

**Age**
From 65 to 74	286
From 75 to 84	256
85 and over	141
Less than 65	139

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	49
Depression	35
Chronic Kidney Disease	53
Asthma	11
Osteoperosis	17
Atrial Fibrilation	17
Heart Failure	43
Chronic Obstructive Pulmonary Disease	33
Diabetes	52
Dementia	22
Cancer	18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2014 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	95
cytology	154
lab tests	728

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	329
Female	410

**Ethnicity**
Non-Hispanic White	376
Black	38
Hispanic	255
Asian	52
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	236
85 and over	117
Less than 65	113

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2014

Hypertension	75
High Cholesterol	66
Stroke	11
Ischemic Heart Disease	53
Depression	35
Chronic Kidney Disease	54
Asthma	14
Osteoperosis	17
Atrial Fibrilation	20
Heart Failure	47
Chronic Obstructive Pulmonary Disease	28
Diabetes	52
Dementia	22
Cancer	21

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2015 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	81
cytology	219
lab tests	383

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	784
Female	938

**Ethnicity**
Non-Hispanic White	916
Black	70
Hispanic	542
Asian	122
Other	72
Native American	0

**Age**
From 65 to 74	612
From 75 to 84	496
85 and over	310
Less than 65	304

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2015

Hypertension	75
High Cholesterol	66
Stroke	11
Ischemic Heart Disease	50
Depression	34
Chronic Kidney Disease	51
Asthma	22
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	46
Chronic Obstructive Pulmonary Disease	32
Diabetes	51
Dementia	21
Cancer	22

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2016 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	115
cytology	196
lab tests	354

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	309
Female	433

**Ethnicity**
Non-Hispanic White	364
Black	40
Hispanic	250
Asian	61
Other	27
Native American	0

**Age**
From 65 to 74	283
From 75 to 84	215
85 and over	128
Less than 65	116

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2016

Hypertension	75
High Cholesterol	71
Stroke	11
Ischemic Heart Disease	55
Depression	37
Chronic Kidney Disease	59
Asthma	34
Osteoperosis	18
Atrial Fibrilation	16
Heart Failure	45
Chronic Obstructive Pulmonary Disease	31
Diabetes	54
Dementia	26
Cancer	20

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2017 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	111
cytology	200
lab tests	322

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	297
Female	341

**Ethnicity**
Non-Hispanic White	329
Black	27
Hispanic	199
Asian	54
Other	29
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	182
85 and over	111
Less than 65	101

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2017

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	49
Depression	37
Chronic Kidney Disease	59
Asthma	13
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	43
Chronic Obstructive Pulmonary Disease	32
Diabetes	51
Dementia	26
Cancer	22

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2018 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	97
cytology	154
lab tests	276

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	273
Female	347

**Ethnicity**
Non-Hispanic White	290
Black	29
Hispanic	230
Asian	44
Other	27
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	178
85 and over	106
Less than 65	110

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2018

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	50
Depression	37
Chronic Kidney Disease	62
Asthma	14
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	44
Chronic Obstructive Pulmonary Disease	28
Diabetes	55
Dementia	27
Cancer	21

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2019 were lab tests, consultation and cytology.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	103
cytology	85
lab tests	206

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	179
Female	229

**Ethnicity**
Non-Hispanic White	206
Black	18
Hispanic	139
Asian	33
Other	12
Native American	0

**Age**
From 65 to 74	169
From 75 to 84	116
85 and over	61
Less than 65	62

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2019

Hypertension	75
High Cholesterol	70
Stroke	9
Ischemic Heart Disease	50
Depression	39
Chronic Kidney Disease	60
Asthma	13
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	47
Chronic Obstructive Pulmonary Disease	26
Diabetes	56
Dementia	25
Cancer	20

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2020 were lab tests, consultation and cytology.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	88
cytology	74
lab tests	164

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	144
Female	181

**Ethnicity**
Non-Hispanic White	153
Black	20
Hispanic	113
Asian	24
Other	15
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	95
85 and over	36
Less than 65	65

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	13
Ischemic Heart Disease	52
Depression	30
Chronic Kidney Disease	63
Asthma	10
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	47
Chronic Obstructive Pulmonary Disease	21
Diabetes	48
Dementia	21
Cancer	24

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2021 were lab tests, consultation and cytology.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	119
cytology	83
lab tests	250

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	166
Female	192

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	124
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	157
From 75 to 84	109
85 and over	40
Less than 65	52

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2021

Hypertension	75
High Cholesterol	68
Stroke	11
Ischemic Heart Disease	53
Depression	32
Chronic Kidney Disease	62
Asthma	11
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	46
Chronic Obstructive Pulmonary Disease	26
Diabetes	49
Dementia	20
Cancer	22

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA during 2022 were lab tests, consultation and cytology.

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

consultation	103
cytology	81
lab tests	202

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	177
Female	230

**Ethnicity**
Non-Hispanic White	207
Black	18
Hispanic	140
Asian	26
Other	16
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	124
85 and over	50
Less than 65	57

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	45
Depression	36
Chronic Kidney Disease	48
Asthma	18
Osteoperosis	21
Atrial Fibrilation	31
Heart Failure	45
Chronic Obstructive Pulmonary Disease	31
Diabetes	59
Dementia	18
Cancer	30

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John T. Yamashita, MD for Medicare patients.

The highest averages for the top procedures that Dr. John T. Yamashita, MD treated as a pathologist in Mission Hills, CA were lab tests, cytology and consultation.

consultation	107
cytology	156
lab tests	391

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John T. Yamashita, MD.

**Gender**
Male	276
Female	340

**Ethnicity**
Black / African American	26
Asian / Pacific Islander	42
Non-Hispanic White	310
Native American / Alaskan Native	0
Hispanic	210
Other	19

**Age**
75 to 84	182
85 and over	100
Less than 65	101
65 to 74	232

Average of Total of Conditions of Medicare patients treated by Dr. John T. Yamashita, MD From 2012 - 2022

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

Hypertension	68
High Cholesterol	62
Stroke	10
Ischemic Heart Disease	46
Depression	32
Chronic Kidney Disease	51
Asthma	14
Osteoporosis	14
Heart Failure	41
Chronic Obstructive Pulmonary Disease	26
Diabetes	47
Atrial Fibrillation	16
Dementia	20
Cancer	20

Education & Training

Dr. John T. Yamashita, MD graduated from George Washington University School of Medicine and Health Sciences in 1991. He has a state license in California.

Medical School: George Washington University School of Medicine and Health Sciences (1991)

Licensed In: California

Affiliations & Hospitals

Dr. John T. Yamashita, MD is associated with these hospitals and organizations:

PATHOLOGY ASSOCIATES OF SOUTHERN CALIFORNIA

Ratings & Reviews

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Biography

Dr. John Yamashita's medical specialty is pathology. He studied medicine at George Washington University School of Medicine and Health Sciences.

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Dr. John T. Yamashita, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John T. Yamashita, MD in 2023

By Volume:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Yamashita, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. John T. Yamashita, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

Biography