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Dr. James Michael Mason, MD, MPH

Accepting New Patients

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Specializes in: Radiation Oncology

Wayne State University School of Medicine (1988)

36450 INLAND VALLEY DRIVE SUITE 101
WILDOMAR, CA 92595

(951) 696-0679

Dr. James Michael Mason, MD, MPH is a radiation oncologist in WILDOMAR, CA specializing in radiation oncology. He graduated from Wayne State University School of Medicine in 1988 and has 38 years of experience.

Office Locations

36450 INLAND VALLEY DRIVE SUITE 101
WILDOMAR, CA 92595

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In The News

“The jury is due back at the downtown Los Angeles courthouse on Oct. 17 following a weeklong break in the case of Dr. James Mason Heaps.”—"Jury to decide fate of ex-UCLA gynecologist in sexual abuse case", Los Angeles Daily News, October 2022

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2012 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	333
radiation therapy	1045

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2013 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	285
radiation therapy	832

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	73
Female	26

**Ethnicity**
Non-Hispanic White	76
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2013

Hypertension	63
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	37
Depression	16
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	11
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2014 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	248
radiation therapy	725

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	85
Female	36

**Ethnicity**
Non-Hispanic White	93
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	51
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2014

Hypertension	69
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	36
Depression	13
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	0
Cancer	69

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2015 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	257
radiation therapy	375

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	146
Female	58

**Ethnicity**
Non-Hispanic White	166
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	60
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2015

Hypertension	71
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	34
Depression	11
Chronic Kidney Disease	38
Asthma	11
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	18
Chronic Obstructive Pulmonary Disease	16
Diabetes	34
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2016 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	286
radiation therapy	331

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	67
Female	43

**Ethnicity**
Non-Hispanic White	81
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	47
From 75 to 84	47
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2016

Hypertension	65
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	33
Depression	15
Chronic Kidney Disease	35
Asthma	20
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	14
Chronic Obstructive Pulmonary Disease	21
Diabetes	40
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2017 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	239
radiation therapy	319

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	61
Female	30

**Ethnicity**
Non-Hispanic White	65
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2017

Hypertension	75
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	41
Depression	12
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	27
Chronic Obstructive Pulmonary Disease	24
Diabetes	40
Dementia	13
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2018 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	269
radiation therapy	279

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	50
Female	30

**Ethnicity**
Non-Hispanic White	57
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	31
From 75 to 84	37
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2018

Hypertension	73
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	35
Depression	16
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	21
Diabetes	41
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2019 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	228
radiation therapy	423

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	61
Female	37

**Ethnicity**
Non-Hispanic White	71
Black	0
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	40
From 75 to 84	42
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2019

Hypertension	75
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	40
Depression	16
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	26
Diabetes	36
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2020 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	137
radiation therapy	163

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	51
Female	23

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

**Age**
From 65 to 74	0
From 75 to 84	37
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2020

Hypertension	68
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	34
Depression	0
Chronic Kidney Disease	46
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	38
Dementia	0
Cancer	74

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2021 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	209
radiation therapy	212

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	56
Female	24

**Ethnicity**
Non-Hispanic White	57
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2021

Hypertension	59
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	38
Depression	0
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA during 2022 were radiation therapy.

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

doctor visit	164
radiation therapy	140

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	59
Female	26

**Ethnicity**
Non-Hispanic White	63
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH in 2022

Hypertension	73
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	0
Chronic Obstructive Pulmonary Disease	22
Diabetes	31
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. James Michael Mason, MD, MPH for Medicare patients.

The highest averages for the top procedures that Dr. James Michael Mason, MD, MPH treated as a radiation oncologist in WILDOMAR, CA were radiation therapy.

doctor visit	241
radiation therapy	440

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. James Michael Mason, MD, MPH.

**Gender**
Male	64
Female	30

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	71
Native American / Alaskan Native	0
Hispanic	6
Other	0

**Age**
75 to 84	34
85 and over	0
Less than 65	0
65 to 74	36

Average of Total of Conditions of Medicare patients treated by Dr. James Michael Mason, MD, MPH From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. James Michael Mason, MD, MPH treated were cancer, hypertension, high cholesterol and diabetes.

Hypertension	62
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	32
Depression	10
Chronic Kidney Disease	29
Asthma	2
Osteoporosis	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	17
Diabetes	32
Atrial Fibrillation	9
Dementia	1
Cancer	67

Education & Training

Dr. James Michael Mason, MD, MPH graduated from Wayne State University School of Medicine in 1988. He completed residency at Wayne State University Affiliated Hospitals. He is certified by the American Board of Radiology and has a state license in California.

Medical School: Wayne State University School of Medicine (1988)

Residency: Wayne State University Affiliated Hospitals

Board Certification: American Board of Radiology

Licensed In: California

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General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$496 TASIGNA $115	AFINITOR $102	VOTRIENT $72	ZYKADIA $51	NON BRAND $45	Other $111
INSYS Therapeutics Inc	$393 SUBSYS $378	Syndros $14
E.R. Squibb & Sons, L.L.C.	$117 OPDIVO $56	SPRYCEL $24	ERBITUX $24	YERVOY $14
Janssen Biotech, Inc.	$94 ZYTIGA $37	IMBRUVICA $35	YONDELIS $22
AstraZeneca Pharmaceuticals LP	$89 FASLODEX $68	TAGRISSO $20
Other	$502 Rezum $69	XTANDI $60	PROVENGE $57	Somatuline Depot 120mg-.5ml $40	KEYTRUDA $27	Other $250

**Types of Payments**
Food and Beverage	$1,691

Biography

Dr. James Mason's medical specialty is radiation oncology. His education and training includes medical school at Wayne State University School of Medicine and residency at a hospital affiliated with Wayne State University. Dr. Mason welcomes new patients at his office inWILDOMAR, CA as reported by Doctor.com.