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Dr. John Gregory Mears, MD

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Specializes in: Medical Oncology, Adult Oncology and Adult Hematology

Columbia University, College of Physicians and Surgeons

Professional interests include: chemotherapy, leukemia, lymphoma, and more.

1978 Crompond Road
Cortlandt, NY 10567

(914) 293-8400

Dr. John Gregory Mears, MD is a medical oncologist in Cortlandt, NY specializing in medical oncology, adult oncology and adult hematology. He graduated from Columbia University, College of Physicians and Surgeons. Dr. John Gregory Mears, MD is affiliated with NewYork-Presbyterian and ColumbiaDoctors.

Office Locations

1978 Crompond Road
Cortlandt, NY 10567

open_in_new

NewYork-Presbyterian

1980 Crompond Road
Cortlandt Manor, NY 10567

(914) 293-8400

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In The News

“"Hematologic malignancies are forms of cancer that begin in the cells of blood-forming tissue, such as the bone marrow, or in the cells of the immune system," says Dr. J. Gregory Mears a board...”—"Story from NewYork-Presbyterian Hospital: Medical advances show promise for some blood cancers", The Journal News, September 2017

“She eventually made her way to J. Gregory Mears, a hematologist at Columbia University, who quickly gave her a diagnosis of myelodysplastic syndrome, an aggressive blood disorder that destroys the...”—"Nora Ephron's Final Act (Published 2013)", New York Times, March 2013

“My oncologist, J. Gregory Mears, M.D., said that mine "was not a bad story," because my tumors were "indolent," slow-growing.”—""Living in the Lightning: A Cancer Journal"", Salon, June 1999

Noteworthy Medicare Patient Procedures Performed by Dr. John Gregory Mears, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 25%

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

venipuncture

In 2012, Dr. John Gregory Mears, MD had a list price for blood draw, blood draw for lab tests, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 75% of providers in related specialties within New York. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2012 were hospital care, inpatient care, blood draw and bone marrow tests.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

aspiration	14
blood draw	45
bone marrow tests	29
diagnostic procedures	15
doctor visit	1472
hospital care	352
inpatient care	352

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2013 were hospital care, inpatient care, blood draw and bone marrow tests.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

aspiration	25
blood draw	55
bone marrow tests	51
diagnostic procedures	26
doctor visit	1437
hospital care	180
inpatient care	180

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	223
Female	231

**Ethnicity**
Non-Hispanic White	410
Black	19
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	198
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2013

Hypertension	63
High Cholesterol	53
Stroke	5
Ischemic Heart Disease	37
Depression	15
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	7
Cancer	28

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2014 were bone marrow tests, chemotherapy, biological response modifier (BRM) therapy and minimally invasive procedures.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

aspiration	34
biological response modifier (BRM) therapy	59
blood draw	50
bone marrow tests	68
chemotherapy	59
diagnostic procedures	34
doctor visit	1475
minimally invasive procedures	59

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	208
Female	241

**Ethnicity**
Non-Hispanic White	399
Black	18
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	169
From 75 to 84	196
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2014

Hypertension	63
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	40
Depression	17
Chronic Kidney Disease	22
Asthma	7
Osteoperosis	17
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	5
Cancer	29

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2015 were hospital care, inpatient care, bone marrow tests and aspiration.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

aspiration	16
bone marrow tests	32
diagnostic procedures	16
doctor visit	1335
hospital care	48
inpatient care	48

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	432
Female	514

**Ethnicity**
Non-Hispanic White	832
Black	42
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	370
From 75 to 84	396
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2015

Hypertension	63
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	42
Depression	19
Chronic Kidney Disease	23
Asthma	11
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	6
Cancer	28

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

doctor visit	1438
hospital care	19
inpatient care	19

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	229
Female	271

**Ethnicity**
Non-Hispanic White	434
Black	25
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	185
From 75 to 84	203
85 and over	94
Less than 65	18

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2016

Hypertension	62
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	40
Depression	18
Chronic Kidney Disease	24
Asthma	16
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	8
Cancer	26

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

doctor visit	1528
hospital care	90
inpatient care	90

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	237
Female	296

**Ethnicity**
Non-Hispanic White	457
Black	23
Hispanic	0
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	229
85 and over	101
Less than 65	15

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2017

Hypertension	63
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	40
Depression	17
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Dementia	9
Cancer	27

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

doctor visit	1647

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	276
Female	327

**Ethnicity**
Non-Hispanic White	519
Black	25
Hispanic	0
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	221
From 75 to 84	243
85 and over	117
Less than 65	22

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2018

Hypertension	63
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	40
Depression	16
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	21
Chronic Obstructive Pulmonary Disease	14
Diabetes	31
Dementia	9
Cancer	25

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

doctor visit	1476

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	250
Female	309

**Ethnicity**
Non-Hispanic White	479
Black	27
Hispanic	0
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	204
From 75 to 84	225
85 and over	108
Less than 65	22

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2019

Hypertension	65
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	40
Depression	14
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	8
Cancer	23

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

doctor visit	850

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	193
Female	244

**Ethnicity**
Non-Hispanic White	374
Black	20
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	179
85 and over	85
Less than 65	15

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2020

Hypertension	60
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	40
Depression	14
Chronic Kidney Disease	35
Asthma	7
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	9
Cancer	22

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2021 were blood draw.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

blood draw	36
doctor visit	1038

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	191
Female	253

**Ethnicity**
Non-Hispanic White	368
Black	23
Hispanic	0
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	193
85 and over	84
Less than 65	13

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2021

Hypertension	59
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	36
Depression	14
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	17
Atrial Fibrilation	13
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	8
Cancer	23

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY during 2022 were blood draw.

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

blood draw	476
doctor visit	1018

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	210
Female	267

**Ethnicity**
Non-Hispanic White	396
Black	26
Hispanic	0
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	199
85 and over	98
Less than 65	15

Conditions of Medicare patients treated by Dr. John Gregory Mears, MD in 2022

Hypertension	69
High Cholesterol	74
Stroke	11
Ischemic Heart Disease	30
Depression	12
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	21
Atrial Fibrilation	22
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	7
Cancer	28

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Gregory Mears, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Gregory Mears, MD treated as a medical oncologist in Cortlandt, NY were hospital care, inpatient care, blood draw and chemotherapy.

aspiration	22
biological response modifier (BRM) therapy	59
blood draw	132
bone marrow tests	45
chemotherapy	59
diagnostic procedures	22
doctor visit	1337
hospital care	137
inpatient care	137
minimally invasive procedures	59

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Gregory Mears, MD.

**Gender**
Male	222
Female	268

**Ethnicity**
Black / African American	22
Asian / Pacific Islander	0
Non-Hispanic White	424
Native American / Alaskan Native	0
Hispanic	6
Other	14

**Age**
75 to 84	205
85 and over	62
Less than 65	10
65 to 74	180

Average of Total of Conditions of Medicare patients treated by Dr. John Gregory Mears, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John Gregory Mears, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	57
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	35
Depression	14
Chronic Kidney Disease	24
Asthma	8
Osteoporosis	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Atrial Fibrillation	13
Dementia	6
Cancer	23

Education & Training

Dr. John Gregory Mears, MD graduated from Columbia University, College of Physicians and Surgeons. He completed residency at Boston Medical Center. He is certified by the Board Certification: hematology and has a state license in New York.

Medical School: Columbia University, College of Physicians and Surgeons

Residency: Boston Medical Center

Board Certification: Board Certification: hematology

Licensed In: New York

Affiliations & Hospitals

Dr. John Gregory Mears, MD is associated with these hospitals and organizations:

NewYork-Presbyterian

ColumbiaDoctors

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. John Gregory Mears, MD appears to accept the following insurance providers: Fidelis Care, UnitedHealthcare, Railroad Medicare, United Healthcare, Medicare, World Trade Center Health Plan and World Trade Center Health Plan - World Trade Center Health Plan.

Insurance Accepted by Provider includes:

According to our sources, Dr. John Gregory Mears, MD accepts the following insurance providers:

Fidelis Care

UnitedHealthcare

Railroad Medicare

United Healthcare

Medicare

World Trade Center Health Plan

World Trade Center Health Plan - World Trade Center Health Plan

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General Payments

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

**Payments by Company**
Celgene Corporation	$938 Revlimid $475	Pomalyst $146	None $125	Abraxane $35	$157
Genentech USA, Inc.	$334 Rituxan $230	Gazyva $104
Novartis Pharmaceuticals Corporation	$278 NON BRAND $131	AFINITOR $63	NON_BRAND $61	TASIGNA $24
Amgen Inc.	$265 Vectibix $125	XGEVA $21	$119
Spectrum Pharmaceuticals Inc.	$138 Folotyn $138
Other	$696 Oncology - Oncaspar $111	ELZONRIS $92	VELCADE $77	ERBITUX $66	Oncaspar $60	Other $289

**Types of Payments**
Food and Beverage	$2,360
Education	$290

Biography

Dr. John Mears is a specialist in adult hematology, adult oncology, and medical oncology in Cortlandt Manor, NY and Cortlandt, NY. His clinical interests include leukemia, sickle cell disease, and bleeding disorders. UnitedHealthcare, Fidelis Care, and Medicare are among the insurance carriers that Dr. Mears honors. Dr. Mears graduated from Columbia University, College of Physicians and Surgeons and then he performed his residency at Boston Medical Center. His professional affiliations include NewYork-Presbyterian Hudson Valley Hospital and ColumbiaDoctors. Dr. Mears welcomes new patients at his office inCortlandt Manor, NY as reported by ColumbiaDoctors.