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Dr. Carol Madellaine Marquez, MD

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Specializes in: Radiation Oncology

University of California, San Francisco (UCSF), School of Medicine (1987)

Professional interests include: non-Hodgkin's lymphoma, bladder cancer, cancer, and more.

2589 Samaritan Drive
San Jose, CA 95124

(833) 444-7622

Dr. Carol Madellaine Marquez, MD is a radiation oncologist in San Jose, CA specializing in radiation oncology. She graduated from University of California, San Francisco (UCSF), School of Medicine in 1987 and has 39 years of experience. Dr. Carol Madellaine Marquez, MD is affiliated with Stanford Health Care.

Office Locations

Stanford Health Care

2589 Samaritan Drive
San Jose, CA 95124

(833) 444-7622

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300 Pasteur Drive
Palo Alto, CA 94305

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Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2013 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	382
radiation therapy	21

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	115
Female	142

**Ethnicity**
Non-Hispanic White	229
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	75
85 and over	13
Less than 65	40

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2013

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2013 were cancer, hypertension, high cholesterol and diabetes.

Hypertension	51
High Cholesterol	34
Stroke	5
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	0
Cancer	58

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2014 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	277
radiation therapy	19

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	97
Female	129

**Ethnicity**
Non-Hispanic White	199
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	57
85 and over	14
Less than 65	37

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2014

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2014 were cancer, hypertension, high cholesterol and depression.

Hypertension	53
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	21
Depression	23
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	18
Dementia	0
Cancer	56

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	213

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	128
Female	220

**Ethnicity**
Non-Hispanic White	276
Black	0
Hispanic	0
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	82
85 and over	38
Less than 65	50

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2015

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2015 were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	56
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	21
Depression	26
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	7
Cancer	64

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2016 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	490
radiation therapy	32

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	69
Female	122

**Ethnicity**
Non-Hispanic White	121
Black	0
Hispanic	26
Asian	31
Other	0
Native American	0

**Age**
From 65 to 74	93
From 75 to 84	64
85 and over	20
Less than 65	14

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2016

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2016 were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	63
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	28
Asthma	13
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Dementia	0
Cancer	69

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2017 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	670
radiation therapy	33

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	144
Female	192

**Ethnicity**
Non-Hispanic White	219
Black	0
Hispanic	41
Asian	54
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	111
85 and over	36
Less than 65	28

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2017

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2017 were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	65
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	26
Dementia	7
Cancer	70

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2018 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	630
radiation therapy	36

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	130
Female	254

**Ethnicity**
Non-Hispanic White	260
Black	0
Hispanic	40
Asian	64
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	134
85 and over	30
Less than 65	25

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2018

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2018 were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	64
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	27
Depression	21
Chronic Kidney Disease	29
Asthma	7
Osteoperosis	15
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2019 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	626
radiation therapy	48

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	165
Female	307

**Ethnicity**
Non-Hispanic White	318
Black	0
Hispanic	44
Asian	83
Other	0
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	155
85 and over	50
Less than 65	25

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2019

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2019 were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	61
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	30
Depression	19
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	18
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2020 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	552
radiation therapy	18

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	132
Female	302

**Ethnicity**
Non-Hispanic White	273
Black	0
Hispanic	59
Asian	74
Other	0
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	142
85 and over	38
Less than 65	28

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2020

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2020 were cancer, high cholesterol, hypertension and ischemic heart disease.

Hypertension	57
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	33
Depression	21
Chronic Kidney Disease	28
Asthma	8
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	10
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2021 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	477
radiation therapy	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	83
Female	279

**Ethnicity**
Non-Hispanic White	242
Black	0
Hispanic	45
Asian	59
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	131
85 and over	40
Less than 65	20

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2021

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2021 were cancer, high cholesterol, hypertension and ischemic heart disease.

Hypertension	62
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	30
Asthma	13
Osteoperosis	19
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	547

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	81
Female	282

**Ethnicity**
Non-Hispanic White	224
Black	0
Hispanic	31
Asian	84
Other	0
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	136
85 and over	29
Less than 65	19

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2022

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2022 were cancer, high cholesterol, hypertension and diabetes.

Hypertension	65
High Cholesterol	72
Stroke	8
Ischemic Heart Disease	22
Depression	17
Chronic Kidney Disease	16
Asthma	12
Osteoperosis	26
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA during 2023 were radiation therapy.

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

doctor visit	513
radiation therapy	14

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	113
Female	295

**Ethnicity**
Non-Hispanic White	267
Black	0
Hispanic	34
Asian	79
Other	0
Native American	0

**Age**
From 65 to 74	211
From 75 to 84	139
85 and over	36
Less than 65	22

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2023

The most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated during 2023 were cancer, high cholesterol, hypertension and osteoperosis.

Hypertension	66
High Cholesterol	73
Stroke	8
Ischemic Heart Disease	22
Depression	17
Chronic Kidney Disease	18
Asthma	14
Osteoperosis	27
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Carol Madellaine Marquez, MD for Medicare patients.

The highest averages for the top procedures that Dr. Carol Madellaine Marquez, MD treated as a radiation oncologist in San Jose, CA were radiation therapy.

doctor visit	488
radiation therapy	25

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Carol Madellaine Marquez, MD.

**Gender**
Male	114
Female	229

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	50
Non-Hispanic White	238
Hispanic	29
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	31
75 to 84	111
Less than 65	28
65 to 74	173

Average of Total of Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Carol Madellaine Marquez, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	60
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	25
Asthma	9
Osteoporosis	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Atrial Fibrillation	10
Cancer	69
Dementia	5

Education & Training

Dr. Carol Madellaine Marquez, MD graduated from University of California, San Francisco (UCSF), School of Medicine in 1987. She completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. She is certified by the American Board of Radiology and has a state license in Oregon.

Medical School: University of California, San Francisco (UCSF), School of Medicine (1987)

Residency: University of California, San Francisco (UCSF) Affiliated Hospitals

Board Certification: American Board of Radiology

Licensed In: Oregon

Affiliations & Hospitals

Dr. Carol Madellaine Marquez, MD is associated with these hospitals and organizations:

Stanford Health Care

Ratings & Reviews

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General Payments

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

**Payments by Company**
Elekta, Inc.	$357 ELEKTA LINEAR ACCELERATOR $357
Mevion_Medical_Systems_Inc	$211 PTS250 $211
Focal Therapeutics, Inc.	$104 BioZorb $104
Varian Medical Systems, Inc.	$41 TrueBeam $41

**Types of Payments**
Food and Beverage	$514
Travel and Lodging	$199

Biography

Dr. Carol Marquez's area of specialization is radiation oncology. Her areas of expertise include the following: bladder cancer, appendix cancer, and soft tissue sarcoma. She is affiliated with Stanford Health Care. Dr. Marquez attended medical school at the University of California, San Francisco (UCSF), School of Medicine. For her professional training, Dr. Marquez completed a residency program at a hospital affiliated with the University of California, San Francisco (UCSF). Dr. Marquez is conversant in Spanish.

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Dr. Carol Madellaine Marquez, MD

Office Locations

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Average Medicare Patient Data From 2013 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Carol Madellaine Marquez, MD From 2013 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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