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Dr. Nataliya Mar, MD

(202 Ratings)

Specializes in: Adult Oncology and Adult Hematology

SUNY Upstate Medical University (2009)

Professional interests include: cancer, blood cancers, prostate cancer

101 The City Drive South Building 23
Orange, CA 92868

(714) 456-8000

Dr. Nataliya Mar, MD is an oncologist in Orange, CA specializing in adult oncology and adult hematology. She graduated from SUNY Upstate Medical University in 2009 and has 16 years of experience. Dr. Nataliya Mar, MD is affiliated with UCI Health and UC REGENTS.

Office Locations

101 The City Drive South Building 23
Orange, CA 92868

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19208 Jamboree Road
Irvine, CA 92612

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In The News

“Nataliya Mar, MD, is associate clinical professor in the Division of Hematology/Oncology at the Chao Family Comprehensive Cancer Center, UCI Health, in Orange, California.”—"How TAR-200 Therapy Fared in Patients With BCG-Unresponsive High-Risk NMIBC", MedPage Today, November 2025

“Nataliya Mar, MD, is associate clinical professor in the Division of Hematology/Oncology at the Chao Family Comprehensive Cancer Center, UC I Health, in Orange, California.”—"A Roadmap for Clinicians on How to Navigate Prostate Cancers With Actionable Mutations", MedPage Today, September 2023

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	275
hospital care	72
inpatient care	72

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	93
Female	22

**Ethnicity**
Non-Hispanic White	64
Black	0
Hispanic	0
Asian	33
Other	0
Native American	0

**Age**
From 65 to 74	45
From 75 to 84	42
85 and over	12
Less than 65	16

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2016

The most common conditions of Medicare patients that Dr. Nataliya Mar, MD treated during 2016 were hypertension, chronic kidney disease, high cholesterol and cancer.

Hypertension	75
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	30
Depression	25
Chronic Kidney Disease	63
Asthma	18
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	41
Dementia	13
Cancer	51

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	517

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	99
Female	24

**Ethnicity**
Non-Hispanic White	73
Black	0
Hispanic	0
Asian	31
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	39
85 and over	22
Less than 65	11

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2017

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

Hypertension	75
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	42
Depression	16
Chronic Kidney Disease	72
Asthma	0
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	44
Dementia	18
Cancer	63

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	712
hospital care	66
inpatient care	66

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	134
Female	37

**Ethnicity**
Non-Hispanic White	86
Black	0
Hispanic	27
Asian	46
Other	0
Native American	0

**Age**
From 65 to 74	61
From 75 to 84	64
85 and over	24
Less than 65	22

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2018

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

Hypertension	75
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	50
Depression	21
Chronic Kidney Disease	75
Asthma	8
Osteoperosis	12
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	21
Diabetes	43
Dementia	15
Cancer	54

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	736
hospital care	43
inpatient care	43

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	141
Female	30

**Ethnicity**
Non-Hispanic White	99
Black	0
Hispanic	21
Asian	39
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	63
85 and over	22
Less than 65	14

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2019

The most common conditions of Medicare patients that Dr. Nataliya Mar, MD treated during 2019 were chronic kidney disease, hypertension, high cholesterol and ischemic heart disease.

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	51
Depression	18
Chronic Kidney Disease	75
Asthma	8
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	16
Diabetes	43
Dementia	11
Cancer	50

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	807
hospital care	47
inpatient care	47

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	136
Female	37

**Ethnicity**
Non-Hispanic White	96
Black	0
Hispanic	24
Asian	38
Other	0
Native American	0

**Age**
From 65 to 74	63
From 75 to 84	72
85 and over	25
Less than 65	13

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2020

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

Hypertension	74
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	64
Depression	19
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	21
Diabetes	39
Dementia	13
Cancer	46

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	1160

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	137
Female	37

**Ethnicity**
Non-Hispanic White	93
Black	0
Hispanic	22
Asian	44
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	74
85 and over	32
Less than 65	13

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2021

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

Hypertension	72
High Cholesterol	64
Stroke	8
Ischemic Heart Disease	64
Depression	20
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	16
Cancer	46

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	1107

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	152
Female	47

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	32
Asian	44
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	80
85 and over	34
Less than 65	16

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2022

The most common conditions of Medicare patients that Dr. Nataliya Mar, MD treated during 2022 were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	75
High Cholesterol	74
Stroke	12
Ischemic Heart Disease	49
Depression	21
Chronic Kidney Disease	54
Asthma	9
Osteoperosis	11
Atrial Fibrilation	21
Heart Failure	21
Chronic Obstructive Pulmonary Disease	25
Diabetes	38
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

doctor visit	1037
hospital care	21
inpatient care	21

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	165
Female	46

**Ethnicity**
Non-Hispanic White	97
Black	0
Hispanic	33
Asian	61
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	83
85 and over	37
Less than 65	15

Conditions of Medicare patients treated by Dr. Nataliya Mar, MD in 2023

The most common conditions of Medicare patients that Dr. Nataliya Mar, MD treated during 2023 were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	75
High Cholesterol	73
Stroke	11
Ischemic Heart Disease	47
Depression	17
Chronic Kidney Disease	55
Asthma	7
Osteoperosis	15
Atrial Fibrilation	23
Heart Failure	21
Chronic Obstructive Pulmonary Disease	23
Diabetes	39
Dementia	11
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2016 - 2023

Volume of procedures performed by Dr. Nataliya Mar, MD for Medicare patients.

The highest averages for the top procedures that Dr. Nataliya Mar, MD treated as an oncologist in Orange, CA were hospital care and inpatient care.

doctor visit	793
hospital care	49
inpatient care	49

Average Medicare Patient Data From 2016 - 2023

Information about Medicare patients treated by Dr. Nataliya Mar, MD.

**Gender**
Male	132
Female	35

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	42
Non-Hispanic White	89
Hispanic	19
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	64
85 and over	26
Less than 65	15
65 to 74	61

Average of Total of Conditions of Medicare patients treated by Dr. Nataliya Mar, MD From 2016 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Nataliya Mar, MD treated were hypertension, chronic kidney disease, high cholesterol and cancer.

Hypertension	74
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	49
Depression	19
Chronic Kidney Disease	68
Asthma	6
Osteoporosis	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	41
Atrial Fibrillation	15
Dementia	13
Cancer	57

Education & Training

Dr. Nataliya Mar, MD graduated from SUNY Upstate Medical University in 2009. She completed residency at Lenox Hill Hospital. She is certified by the American Board of Internal Medicine - Medical Oncology American Board of Internal Medicine - Internal Medicine and has a state license in California.

Medical School: SUNY Upstate Medical University (2009)

Residency: Lenox Hill Hospital

Board Certification: American Board of Internal Medicine - Medical Oncology American Board of Internal Medicine - Internal Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Nataliya Mar, MD is associated with these hospitals and organizations:

UCI Health

UC REGENTS

Ratings & Reviews

Dr. Nataliya Mar, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 202 ratings. We collect ratings and reviews of Dr. Nataliya Mar, MD from all over the web to help you find the right in Orange, CA.

4.9

Overall Rating

(202 Ratings)

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General Payments

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

**Payments by Company**
EISAI INC.	$34,281 Lenvima $33,859	$422
Merck Sharp & Dohme LLC	$28,034 KEYTRUDA $14,043	LYNPARZA $13,828	WELIREG $34	$128
Seagen Inc.	$21,639 PADCEV $21,320	$319
Astellas Pharma US Inc	$12,337 PADCEV $12,337
Aveo Pharmaceuticals, Inc.	$4,864 FOTIVDA $4,864
Other	$6,151 Cabometyx $4,684	FOUNDATIONONE $600	Trodelvy $316	PADCEV $208	LYNPARZA $122	Other $223

**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	$65,665
Consulting Fee	$14,691
Honoraria	$9,456
Compensation for serving as faculty or as a speaker for a medical education program	$7,158
Food and Beverage	$5,112
Other	$5,225

Research Payments

Dr. Nataliya Mar, MD has received 511 research payments totaling $10,053,744.

Biography

Dr. Nataliya Mar's specialties are adult hematology and adult oncology. After completing medical school at SUNY Downstate Medical Center College of Medicine and SUNY Upstate Medical University, she performed her residency at Lenox Hill Hospital. Dr. Mar's areas of expertise consist of blood cancers and prostate cancer. She has received the distinction of Physicians of Excellence, Orange County Medical Association. She is professionally affiliated with UCI Health.