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Dr. Cassandra Leigh Thomas, MD

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Specializes in: Medical Oncology, Adult Oncology and Adult Hematology

300 Hillmont Avenue Suite 501
Ventura, CA 93003

(805) 652-6218

Dr. Cassandra Leigh Thomas, MD is a medical oncologist in Ventura, CA specializing in medical oncology, adult oncology and adult hematology. Dr. Cassandra Leigh Thomas, MD is affiliated with COUNTY OF VENTURA.

Office Locations

300 Hillmont Avenue Suite 501
Ventura, CA 93003

(805) 652-6218

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900 Medical Center Drive Suite 200
Sewell, NJ 08080

(856) 557-7900

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925 Chestnut Street Suite 320a
Philadelphia, PA 19107

(215) 955-8874

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Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2013

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2013 were hypertension, chronic kidney disease, heart failure and high cholesterol.

Hypertension	75
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	74
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	52
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

doctor visit	52
hospital care	13
inpatient care	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	43
Female	35

**Ethnicity**
Non-Hispanic White	60
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	29
From 75 to 84	23
85 and over	15
Less than 65	11

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2016

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2016 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	46
Depression	27
Chronic Kidney Disease	47
Asthma	22
Osteoperosis	0
Atrial Fibrilation	19
Heart Failure	28
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2017 were hospital care, inpatient care, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

bone marrow tests	13
diagnostic procedures	13
doctor visit	445
hospital care	205
inpatient care	205
minimally invasive procedures	27

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	104
Female	119

**Ethnicity**
Non-Hispanic White	167
Black	44
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	83
85 and over	31
Less than 65	23

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2017

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2017 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	48
Depression	35
Chronic Kidney Disease	57
Asthma	14
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	32
Chronic Obstructive Pulmonary Disease	22
Diabetes	41
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2019 were blood draw and lab tests.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

blood draw	208
doctor visit	657
lab tests	178

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	77
Female	109

**Ethnicity**
Non-Hispanic White	109
Black	59
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	73
85 and over	19
Less than 65	38

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2019

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2019 were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	75
High Cholesterol	68
Stroke	11
Ischemic Heart Disease	43
Depression	31
Chronic Kidney Disease	40
Asthma	9
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	41
Dementia	16
Cancer	37

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2020 were blood draw and lab tests.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

blood draw	58
doctor visit	260
lab tests	55

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	71
Female	92

**Ethnicity**
Non-Hispanic White	108
Black	40
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	56
85 and over	29
Less than 65	20

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2020

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2020 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	69
Stroke	11
Ischemic Heart Disease	45
Depression	22
Chronic Kidney Disease	51
Asthma	7
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	31
Chronic Obstructive Pulmonary Disease	20
Diabetes	36
Dementia	10
Cancer	39

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

doctor visit	286
hospital care	36
inpatient care	36

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	73
Female	121

**Ethnicity**
Non-Hispanic White	152
Black	30
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	66
85 and over	17
Less than 65	29

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2021

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2021 were high cholesterol, hypertension, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	47
Depression	31
Chronic Kidney Disease	50
Asthma	10
Osteoperosis	8
Atrial Fibrilation	19
Heart Failure	28
Chronic Obstructive Pulmonary Disease	25
Diabetes	30
Dementia	16
Cancer	37

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

doctor visit	320
hospital care	40
inpatient care	40

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	59
Female	165

**Ethnicity**
Non-Hispanic White	180
Black	23
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	78
85 and over	25
Less than 65	31

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2022

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2022 were high cholesterol, hypertension, cancer and diabetes.

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	30
Depression	30
Chronic Kidney Disease	30
Asthma	14
Osteoperosis	24
Atrial Fibrilation	23
Heart Failure	19
Chronic Obstructive Pulmonary Disease	26
Diabetes	36
Dementia	8
Cancer	55

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

hospital care	90
inpatient care	90

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	51
Female	60

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

**Age**
From 65 to 74	41
From 75 to 84	40
85 and over	15
Less than 65	15

Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD in 2023

The most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated during 2023 were high cholesterol, hypertension, cancer and diabetes.

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	36
Depression	33
Chronic Kidney Disease	41
Asthma	24
Osteoperosis	22
Atrial Fibrilation	41
Heart Failure	35
Chronic Obstructive Pulmonary Disease	32
Diabetes	45
Dementia	20
Cancer	51

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Cassandra Leigh Thomas, MD for Medicare patients.

The highest averages for the top procedures that Dr. Cassandra Leigh Thomas, MD treated as a medical oncologist in Ventura, CA were blood draw, lab tests, hospital care and inpatient care.

blood draw	133
bone marrow tests	13
diagnostic procedures	13
doctor visit	336
hospital care	76
inpatient care	76
lab tests	116
minimally invasive procedures	27

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Cassandra Leigh Thomas, MD.

**Gender**
Male	59
Female	87

**Ethnicity**
Black / African American	24
Asian / Pacific Islander	0
Non-Hispanic White	106
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	52
85 and over	18
Less than 65	20
65 to 74	55

Average of Total of Conditions of Medicare patients treated by Dr. Cassandra Leigh Thomas, MD From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Cassandra Leigh Thomas, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	67
Stroke	9
Ischemic Heart Disease	36
Depression	26
Chronic Kidney Disease	48
Asthma	12
Osteoporosis	9
Heart Failure	31
Chronic Obstructive Pulmonary Disease	20
Diabetes	33
Atrial Fibrillation	20
Dementia	10
Cancer	28

Education & Training

She has a state license in New Jersey.

Licensed In: New Jersey

Affiliations & Hospitals

Dr. Cassandra Leigh Thomas, MD is associated with these hospitals and organizations:

COUNTY OF VENTURA

Ratings & Reviews

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General Payments

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

**Payments by Company**
GENZYME CORPORATION	$370 CABLIVI $350	CERDELGA $20
E.R. Squibb & Sons, L.L.C.	$147 OPDIVO $75	EMPLICITI $48	ELIQUIS $24
Astellas Pharma US Inc	$76 $76
Janssen Pharmaceuticals, Inc	$69 XARELTO $69
AbbVie, Inc.	$31 Venclexta $31
Other	$31 VPRIV $17	Kyprolis $14

**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	$350
Food and Beverage	$298
Education	$76