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Dr. Mary Margaret Oneil, MD

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Specializes in: Adult Rheumatology

2355 Union Road Suite 100
Cheektowaga, NY 14227

(716) 898-0755

Dr. Mary Margaret Oneil, MD is a rheumatologist in Cheektowaga, NY specializing in adult rheumatology.

Office Locations

2355 Union Road Suite 100
Cheektowaga, NY 14227

(716) 898-0755

(716) 898-0775

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Noteworthy Medicare Patient Procedures Performed by Dr. Mary Margaret Oneil, MD in 2023

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

Top 25%

By Affordability:

intravenous infusion therapy

In 2012, Dr. Mary Margaret Oneil, MD had a list price for intravenous infusion therapy 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. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2012 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	34
doctor visit	288
injections	34
minimally invasive procedures	14
musculoskeletal imaging	33
preventive care	20
vaccines	20
vertebral fracture assessment (VFA)	32
X-rays	33

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2013 were minimally invasive procedures, X-rays, musculoskeletal imaging and chemotherapy.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	39
biological response modifier (BRM) therapy	42
chemotherapy	42
doctor visit	315
injections	39
minimally invasive procedures	55
musculoskeletal imaging	45
preventive care	12
skin testing	13
tuberculosis (TB) testing	13
vaccines	12
vertebral fracture assessment (VFA)	23
X-rays	45

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	38
Female	118

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	0
85 and over	0
Less than 65	44

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2013

Hypertension	65
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	32
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	19
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2014 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and vertebral fracture assessment (VFA).

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	26
biological response modifier (BRM) therapy	55
chemotherapy	55
doctor visit	312
injections	26
minimally invasive procedures	55
musculoskeletal imaging	40
preventive care	12
vaccines	12
vertebral fracture assessment (VFA)	42
X-rays	40

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	39
Female	117

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	71
From 75 to 84	0
85 and over	0
Less than 65	41

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2014

Hypertension	63
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	35
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	13
Diabetes	17
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2015 were minimally invasive procedures, chemotherapy, biological response modifier (BRM) therapy and X-rays.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	20
biological response modifier (BRM) therapy	88
chemotherapy	88
doctor visit	270
hip imaging	15
injections	20
minimally invasive procedures	101
musculoskeletal imaging	70
pelvic imaging	11
preventive care	14
vaccines	14
vertebral fracture assessment (VFA)	28
X-rays	81

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	66
Female	246

**Ethnicity**
Non-Hispanic White	288
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	62
85 and over	24
Less than 65	84

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2015

Hypertension	61
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	25
Depression	28
Chronic Kidney Disease	21
Asthma	12
Osteoperosis	31
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	18
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2016 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	43
biological response modifier (BRM) therapy	84
chemotherapy	84
doctor visit	372
injections	43
minimally invasive procedures	84

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	36
Female	105

**Age**
From 65 to 74	58
From 75 to 84	30
85 and over	13
Less than 65	40

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2016

Hypertension	62
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	28
Depression	23
Chronic Kidney Disease	27
Asthma	22
Osteoperosis	19
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	16
Diabetes	23
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2017 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	48
biological response modifier (BRM) therapy	110
chemotherapy	110
doctor visit	495
injections	48
minimally invasive procedures	110

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	41
Female	153

**Ethnicity**
Non-Hispanic White	172
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	46
85 and over	11
Less than 65	56

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2017

Hypertension	66
High Cholesterol	53
Stroke	7
Ischemic Heart Disease	23
Depression	32
Chronic Kidney Disease	24
Asthma	13
Osteoperosis	24
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	18
Diabetes	24
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2018 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	39
biological response modifier (BRM) therapy	138
chemotherapy	138
doctor visit	452
injections	39
minimally invasive procedures	138

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	44
Female	178

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

**Age**
From 65 to 74	89
From 75 to 84	61
85 and over	11
Less than 65	61

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2018

Hypertension	64
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	27
Depression	35
Chronic Kidney Disease	32
Asthma	15
Osteoperosis	25
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	19
Diabetes	26
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2019 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	50
biological response modifier (BRM) therapy	195
chemotherapy	195
doctor visit	421
injections	50
minimally invasive procedures	195

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	44
Female	183

**Ethnicity**
Non-Hispanic White	202
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	0
85 and over	0
Less than 65	66

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2019

Hypertension	69
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	29
Depression	33
Chronic Kidney Disease	34
Asthma	14
Osteoperosis	26
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	19
Diabetes	23
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2020 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	47
biological response modifier (BRM) therapy	183
chemotherapy	183
doctor visit	472
injections	47
minimally invasive procedures	183

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	47
Female	193

**Ethnicity**
Non-Hispanic White	216
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	59
85 and over	17
Less than 65	65

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2020

Hypertension	63
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	30
Depression	36
Chronic Kidney Disease	31
Asthma	11
Osteoperosis	25
Atrial Fibrilation	6
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	20
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2021 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	47
biological response modifier (BRM) therapy	172
chemotherapy	172
doctor visit	507
injections	47
minimally invasive procedures	172

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	51
Female	204

**Ethnicity**
Non-Hispanic White	231
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	57
85 and over	19
Less than 65	64

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2021

Hypertension	64
High Cholesterol	71
Stroke	5
Ischemic Heart Disease	31
Depression	32
Chronic Kidney Disease	35
Asthma	12
Osteoperosis	26
Atrial Fibrilation	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	19
Diabetes	20
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY during 2022 were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

aspiration	25
biological response modifier (BRM) therapy	113
chemotherapy	113
doctor visit	484
injections	25
minimally invasive procedures	113

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	44
Female	210

**Ethnicity**
Non-Hispanic White	230
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	67
85 and over	17
Less than 65	62

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	26
Depression	33
Chronic Kidney Disease	30
Asthma	18
Osteoperosis	33
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	20
Diabetes	21
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mary Margaret Oneil, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary Margaret Oneil, MD treated as a rheumatologist in Cheektowaga, NY were chemotherapy, biological response modifier (BRM) therapy, minimally invasive procedures and X-rays.

aspiration	38
biological response modifier (BRM) therapy	118
chemotherapy	118
doctor visit	398
hip imaging	15
injections	38
minimally invasive procedures	110
musculoskeletal imaging	47
pelvic imaging	11
preventive care	14
skin testing	13
tuberculosis (TB) testing	13
vaccines	14
vertebral fracture assessment (VFA)	31
X-rays	49

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mary Margaret Oneil, MD.

**Gender**
Male	40
Female	155

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	165
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	34
85 and over	10
Less than 65	53
65 to 74	84

Average of Total of Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mary Margaret Oneil, MD treated were hypertension, high cholesterol, depression and osteoperosis.

Hypertension	58
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	24
Depression	27
Chronic Kidney Disease	24
Asthma	12
Osteoporosis	25
Heart Failure	11
Chronic Obstructive Pulmonary Disease	14
Diabetes	19
Atrial Fibrillation	6
Dementia	3
Cancer	10

Education & Training

She has a state license in New York.

Licensed In: New York

Ratings & Reviews

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General Payments

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

**Payments by Company**
AbbVie, Inc.	$360 Humira $354	$6
Pfizer Inc.	$348 XELJANZ $252	INFLECTRA $36	CELEBREX $30	LYRICA $30
Celgene Corporation	$331 $331
Genentech USA, Inc.	$254 Actemra $176	Rituxan $78
Amgen Inc.	$191 Prolia $143	Enbrel $36	Repatha $12
Other	$1,007 ORENCIA $166	BENLYSTA $139	STELARA $132	Ultrasound $131	Cimzia $123	Other $315

**Types of Payments**
Food and Beverage	$2,461
Education	$30

Research Payments

Dr. Mary Margaret Oneil, MD has received 188 research payments totaling $173,175.

Biography

Dr. Mary Oneil, who practices in Cheektowaga, NY, is a medical specialist in adult rheumatology. Dr. Oneil studied medicine at St. Louis University School of Medicine.

Select Year:

Dr. Mary Margaret Oneil, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Mary Margaret Oneil, MD in 2023

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Mary Margaret Oneil, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Research Payments

Biography

Other Providers in Cheektowaga, NY