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Dr. William H. Yong, MD

(William H. Yong, MD)

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Specializes in: General Practice, Pathology and Neuropathology

University of California, Los Angeles (UCLA), David Geffen School of Medicine (1991)

101 The City Drive S
Orange, CA 92868

(714) 880-7812

Dr. William H. Yong, MD is a general practitioner in Orange, CA specializing in general practice, pathology and neuropathology. He graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine in 1991 and has 35 years of experience. Dr. William H. Yong, MD is affiliated with Regents of the University of California and UCI Health.

Office Locations

101 The City Drive S
Orange, CA 92868

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In The News

“"In the brain it is actually larvae (not the mature worm itself) that forms cysts, which when surgeons excise and give to us pathologists, is often dead," wrote Dr. William Yong, a pathologist...”—"RFK Jr. says he had a dead worm in his brain. What are these parasites and how common are they?", Los Angeles Times, May 2024

Noteworthy Medicare Patient Procedures Performed by Dr. William H. Yong, MD in 2023

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

Top 10%

By Affordability:

special stains

In 2023, Dr. William H. Yong, MD had a list price for special stains that was lower than the list prices billed to Medicare by 90% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

lab tests

By Affordability:

consultation

immunohistochemistry test

intraoperative pathology consultation

In 2012, among providers in related specialties within California, Dr. William H. Yong, MD performed more lab tests procedures for Medicare patients than 75% of them and he also had a list price for consultation, immunohistochemistry (IHC) test, and intraoperative pathology consultation that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2012 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	26
lab tests	93

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2013 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	33
lab tests	64

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	19
Female	24

**Ethnicity**
Non-Hispanic White	25
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	21
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2013

Hypertension	75
High Cholesterol	58
Stroke	26
Ischemic Heart Disease	40
Depression	35
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	26
Chronic Obstructive Pulmonary Disease	0
Diabetes	35
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2014 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	18
lab tests	49

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	22
Female	23

**Ethnicity**
Non-Hispanic White	22
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	22
From 75 to 84	0
85 and over	0
Less than 65	12

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2014

Hypertension	75
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	44
Depression	42
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	36
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2015 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	41
lab tests	45

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	54
Female	58

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

**Age**
From 65 to 74	48
From 75 to 84	32
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2015

Hypertension	75
High Cholesterol	61
Stroke	30
Ischemic Heart Disease	36
Depression	38
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	39
Dementia	21
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2016 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	30
lab tests	52

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	32
Female	27

**Ethnicity**
Non-Hispanic White	34
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2016

Hypertension	69
High Cholesterol	51
Stroke	32
Ischemic Heart Disease	27
Depression	31
Chronic Kidney Disease	44
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	25
Chronic Obstructive Pulmonary Disease	0
Diabetes	36
Dementia	27
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2017 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	15
lab tests	49

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	87
Female	81

**Ethnicity**
Non-Hispanic White	112
Black	0
Hispanic	25
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	64
85 and over	22
Less than 65	20

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2017

Hypertension	73
High Cholesterol	59
Stroke	14
Ischemic Heart Disease	34
Depression	25
Chronic Kidney Disease	36
Asthma	9
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2018 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	18
lab tests	129

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	157
Female	149

**Ethnicity**
Non-Hispanic White	190
Black	16
Hispanic	48
Asian	35
Other	0
Native American	0

**Age**
From 65 to 74	126
From 75 to 84	102
85 and over	45
Less than 65	33

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	40
Depression	30
Chronic Kidney Disease	40
Asthma	6
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2019 were lab tests.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

lab tests	41

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	67
Female	76

**Ethnicity**
Non-Hispanic White	92
Black	0
Hispanic	22
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	51
85 and over	22
Less than 65	16

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2019

Hypertension	75
High Cholesterol	64
Stroke	12
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	41
Asthma	13
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	13
Diabetes	40
Dementia	20
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2020 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	13
lab tests	15

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	41
Female	26

**Ethnicity**
Non-Hispanic White	43
Black	0
Hispanic	0
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	29
From 75 to 84	20
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2020

Hypertension	73
High Cholesterol	63
Stroke	22
Ischemic Heart Disease	30
Depression	30
Chronic Kidney Disease	36
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	21
Diabetes	31
Dementia	19
Cancer	19

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2021 were lab tests.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

lab tests	21

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	37
Female	26

**Ethnicity**
Non-Hispanic White	36
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	19
From 75 to 84	28
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	32
Ischemic Heart Disease	49
Depression	35
Chronic Kidney Disease	57
Asthma	0
Osteoperosis	21
Atrial Fibrilation	24
Heart Failure	35
Chronic Obstructive Pulmonary Disease	19
Diabetes	40
Dementia	27
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA during 2022 were lab tests and consultation.

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

consultation	20
lab tests	96

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	60
Female	32

**Ethnicity**
Non-Hispanic White	41
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	26
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William H. Yong, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	36
Ischemic Heart Disease	36
Depression	36
Chronic Kidney Disease	57
Asthma	0
Osteoperosis	14
Atrial Fibrilation	25
Heart Failure	25
Chronic Obstructive Pulmonary Disease	16
Diabetes	53
Dementia	22
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William H. Yong, MD for Medicare patients.

The highest averages for the top procedures that Dr. William H. Yong, MD treated as a general practitioner in Orange, CA were lab tests and consultation.

consultation	23
lab tests	59

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William H. Yong, MD.

**Gender**
Male	52
Female	47

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	6
Non-Hispanic White	61
Native American / Alaskan Native	0
Hispanic	11
Other	0

**Age**
75 to 84	29
85 and over	8
Less than 65	7
65 to 74	40

Average of Total of Conditions of Medicare patients treated by Dr. William H. Yong, MD From 2012 - 2022

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

Hypertension	67
High Cholesterol	57
Stroke	19
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	36
Asthma	2
Osteoporosis	6
Heart Failure	19
Chronic Obstructive Pulmonary Disease	9
Diabetes	34
Atrial Fibrillation	6
Dementia	15
Cancer	6

Education & Training

Dr. William H. Yong, MD graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine in 1991. He completed residency at Massachusetts General Hospital. He is certified by the American Board of Pathology - Neuropathology American Board of Pathology - Anatomic Pathology and has a state license in California.

Medical School: University of California, Los Angeles (UCLA), David Geffen School of Medicine (1991)

Residency: Massachusetts General Hospital

Board Certification: American Board of Pathology - Neuropathology American Board of Pathology - Anatomic Pathology

Licensed In: California

Affiliations & Hospitals

Dr. William H. Yong, MD is associated with these hospitals and organizations:

Regents of the University of California

UCI Health

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General Payments

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

**Payments by Company**
Amgen Inc.	$5,979 Blincyto $2,000	$3,979
Regeneron Pharmaceuticals, Inc.	$2,075 $2,075

**Types of Payments**
Consulting Fee	$6,825
Travel and Lodging	$931
Food and Beverage	$298

Research Payments

Dr. William H. Yong, MD has received 1 research payments totaling $32,621.

Biography

Dr. William Yong is a general practice and neuropathology specialist in Los Angeles, CA and Orange, CA. Dr. Yong is professionally affiliated with UCI Health. He is a graduate of the University of California, Los Angeles (UCLA), David Geffen School of Medicine and a graduate of Massachusetts General Hospital's residency program. He has received professional recognition including the following: Matthew T. Moore Award in clinical pathology, 2009 - American Association of Neuropathologists and Lucien J. Rubinstein Award in neuro-oncology, 1995 - American Association of Neuropathologists.