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Dr. John L. Barstis, MD Hematlgy & Onclgy

(1 Rating)

Specializes in: Adult Oncology and Adult Hematology

23929 Mcbean Parkway Building F Suite 215
Valencia, CA 91355

(661) 255-5350

Dr. John L. Barstis, MD Hematlgy & Onclgy is an oncologist in Valencia, CA specializing in adult oncology and adult hematology.

Office Locations

23929 Mcbean Parkway Building F Suite 215
Valencia, CA 91355

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In The News

“Most patients in her condition live about a year, said her oncologist and friend Dr. John Barstis.”—"Elegant Tribute for Fightin' Irish", Los Angeles Times, May 2025

“John Barstis, Lilly's oncologist, said he's seen it all...”—"Fighting to live, remain insured", Los Angeles Times, February 2008

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA during 2012 were hospital care, inpatient care, blood draw and minimally invasive procedures.

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

biological response modifier (BRM) therapy	138
blood draw	237
chemotherapy	138
doctor visit	841
hospital care	249
inpatient care	249
lab tests	138
minimally invasive procedures	164

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA during 2013 were blood draw, lab tests, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

biological response modifier (BRM) therapy	189
blood draw	268
chemotherapy	189
doctor visit	945
hospital care	150
inpatient care	150
lab tests	252
minimally invasive procedures	211
port flush	34

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy.

**Gender**
Male	118
Female	252

**Ethnicity**
Non-Hispanic White	286
Black	25
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	149
From 75 to 84	125
85 and over	36
Less than 65	60

Conditions of Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy in 2013

Hypertension	67
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	38
Depression	30
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	23
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	13
Cancer	53

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA during 2014 were blood draw, lab tests, chemotherapy and biological response modifier (BRM) therapy.

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

biological response modifier (BRM) therapy	131
blood draw	234
chemotherapy	131
doctor visit	887
hospital care	110
inpatient care	110
lab tests	221
minimally invasive procedures	131

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy.

**Gender**
Male	124
Female	263

**Ethnicity**
Non-Hispanic White	292
Black	23
Hispanic	44
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	169
From 75 to 84	124
85 and over	32
Less than 65	62

Conditions of Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy in 2014

Hypertension	66
High Cholesterol	51
Stroke	8
Ischemic Heart Disease	34
Depression	22
Chronic Kidney Disease	29
Asthma	11
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	28
Dementia	11
Cancer	53

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA during 2015 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

biological response modifier (BRM) therapy	121
blood draw	271
chemotherapy	121
doctor visit	994
hospital care	208
inpatient care	208
lab tests	323
minimally invasive procedures	121

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy.

**Gender**
Male	282
Female	584

**Ethnicity**
Non-Hispanic White	668
Black	50
Hispanic	88
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	396
From 75 to 84	262
85 and over	72
Less than 65	136

Conditions of Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy in 2015

Hypertension	64
High Cholesterol	51
Stroke	8
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	30
Asthma	13
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	21
Chronic Obstructive Pulmonary Disease	16
Diabetes	26
Dementia	11
Cancer	52

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA during 2016 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

biological response modifier (BRM) therapy	80
blood draw	237
chemotherapy	80
doctor visit	680
hospital care	165
inpatient care	165
lab tests	272
minimally invasive procedures	101

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy.

**Gender**
Male	123
Female	265

**Ethnicity**
Non-Hispanic White	294
Black	17
Hispanic	44
Asian	20
Other	0
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	119
85 and over	36
Less than 65	54

Conditions of Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy in 2016

Hypertension	65
High Cholesterol	50
Stroke	10
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	36
Asthma	16
Osteoperosis	19
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	12
Cancer	53

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2016

Volume of procedures performed by Dr. John L. Barstis, MD Hematlgy & Onclgy for Medicare patients.

The highest averages for the top procedures that Dr. John L. Barstis, MD Hematlgy & Onclgy treated as an oncologist in Valencia, CA were blood draw, lab tests, hospital care and inpatient care.

biological response modifier (BRM) therapy	131
blood draw	249
chemotherapy	131
doctor visit	869
hospital care	176
inpatient care	176
lab tests	241
minimally invasive procedures	145

Average Medicare Patient Data From 2012 - 2016

Information about Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy.

**Gender**
Male	129
Female	272

**Ethnicity**
Black / African American	23
Asian / Pacific Islander	4
Non-Hispanic White	308
Native American / Alaskan Native	0
Hispanic	42
Other	0

**Age**
75 to 84	126
85 and over	35
Less than 65	62
65 to 74	178

Average of Total of Conditions of Medicare patients treated by Dr. John L. Barstis, MD Hematlgy & Onclgy From 2012 - 2016

The highest averages of the most common conditions of Medicare patients that Dr. John L. Barstis, MD Hematlgy & Onclgy treated were hypertension, cancer, high cholesterol and ischemic heart disease.

Hypertension	52
High Cholesterol	40
Stroke	6
Ischemic Heart Disease	28
Depression	19
Chronic Kidney Disease	24
Asthma	10
Osteoporosis	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Atrial Fibrillation	10
Dementia	9
Cancer	42

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. John L. Barstis, MD Hematlgy & Onclgy has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. John L. Barstis, MD Hematlgy & Onclgy from all over the web to help you find the right in Valencia, CA.

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General Payments

These charts describe general payments received by Dr. John L. Barstis, MD Hematlgy & Onclgy. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
E.R. Squibb & Sons, L.L.C.	$176 YERVOY $107	OPDIVO $70
DFINE, Inc	$73 Star $73
Grifols USA, LLC	$51 Alphanate $51
Millennium Pharmaceuticals, Inc.	$22 VELCADE $22
Lilly USA, LLC	$21 CYRAMZA $21
Other	$49 FENTORA $17	IBRANCE $15	$17

**Types of Payments**
Food and Beverage	$327
Education	$66

Biography

Dr. John Barstis specializes in adult hematology and adult oncology and practices in Valencia, CA. Dr. Barstis obtained a license to practice in California.