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Home > MA Providers > Internists & Internal Medicine Doctors

Dr. Darren Stephen O'Neill, MD

(5 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

University of Connecticut School of Medicine (1994)

2150 Main Street
Springfield, MA 01104

(413) 739-5676

Dr. Darren Stephen O'Neill, MD is an internist in Springfield, MA specializing in internal medicine (adult medicine). He graduated from University of Connecticut School of Medicine in 1994 and has 32 years of experience. Dr. Darren Stephen O'Neill, MD is affiliated with Baystate Health, Trinity Health of New England, SPRINGFIELD MEDICAL ASSOCIATES, INC and Springfield Medical Associates.

Office Locations

Trinity Health of New England

2150 Main Street
Springfield, MA 01104

(413) 739-5676

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701 Enfield Street
Enfield, CT 06082

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Noteworthy Medicare Patient Procedures Performed by Dr. Darren Stephen O'Neill, MD in 2023

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

Top 5%

By Volume:

flu shot

In 2023, Dr. Darren Stephen O'Neill, MD performed more flu shot procedures for Medicare patients than 95% of providers in related specialties within Massachusetts.

Top 25%

By Volume:

impacted ear wax removal

major joint aspiration

major joint injection

In 2012, Dr. Darren Stephen O'Neill, MD performed more impacted ear wax removal, major joint aspiration, and major joint injection procedures for Medicare patients than 75% of providers in related specialties within Massachusetts.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2012 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

ambulatory monitoring	11
aspiration	64
blood draw	1040
cardiac procedures	36
diabetes management	242
doctor visit	1437
ear procedures	19
injections	64
lab tests	4692
preventive care	1400
thyroid function tests	689
ultrasound (sonogram)	44
vaccines	179
vascular procedures	19

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2013 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	11
ambulatory monitoring	11
aspiration	60
blood draw	963
cardiac procedures	37
diabetes management	227
doctor visit	1450
ear procedures	21
injections	60
lab tests	4367
pelvic imaging	11
preventive care	1452
thyroid function tests	693
ultrasound (sonogram)	114
vaccines	283
vascular procedures	66

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	247
Female	319

**Ethnicity**
Non-Hispanic White	547
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	175
85 and over	116
Less than 65	39

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2013

Hypertension	71
High Cholesterol	68
Stroke	3
Ischemic Heart Disease	22
Depression	21
Chronic Kidney Disease	14
Asthma	9
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	22
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2014 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	24
ambulatory monitoring	13
aspiration	69
blood draw	1133
cardiac procedures	34
diabetes management	235
doctor visit	1461
injections	69
lab tests	4664
preventive care	1446
thyroid function tests	847
ultrasound (sonogram)	124
vaccines	234
vascular procedures	79

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	243
Female	323

**Ethnicity**
Non-Hispanic White	543
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	161
85 and over	123
Less than 65	40

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2014

Hypertension	70
High Cholesterol	66
Stroke	4
Ischemic Heart Disease	19
Depression	21
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	22
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2015 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	15
ambulatory monitoring	25
aspiration	81
blood draw	898
cardiac procedures	54
diabetes management	224
doctor visit	1443
ear procedures	22
injections	81
lab tests	4838
preventive care	1667
thoracic (chest) imaging	12
thyroid function tests	817
ultrasound (sonogram)	107
vaccines	533
vascular procedures	63
X-rays	12

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	476
Female	624

**Ethnicity**
Non-Hispanic White	1044
Black	0
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	494
From 75 to 84	296
85 and over	234
Less than 65	76

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2015

Hypertension	68
High Cholesterol	64
Stroke	3
Ischemic Heart Disease	20
Depression	22
Chronic Kidney Disease	16
Asthma	9
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Dementia	11
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2016 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	19
ambulatory monitoring	23
aspiration	75
blood draw	1107
cardiac procedures	58
diabetes management	231
doctor visit	1717
ear procedures	25
injections	75
lab tests	6276
preventive care	1738
thoracic (chest) imaging	23
thyroid function tests	933
ultrasound (sonogram)	129
vaccines	422
vascular procedures	75
X-rays	23

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	273
Female	372

**Ethnicity**
Non-Hispanic White	612
Black	0
Hispanic	0
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	295
From 75 to 84	178
85 and over	121
Less than 65	51

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2016

Hypertension	70
High Cholesterol	61
Stroke	3
Ischemic Heart Disease	21
Depression	22
Chronic Kidney Disease	18
Asthma	15
Osteoperosis	5
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2017 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	15
ambulatory monitoring	19
aspiration	75
blood draw	1019
breathing treatment	17
cardiac procedures	43
diabetes management	238
doctor visit	1723
ear procedures	62
injections	75
lab tests	5894
pelvic imaging	12
preventive care	1606
removal of lesion (e.g. growth)	42
skin procedures	42
thoracic (chest) imaging	18
thyroid function tests	909
ultrasound (sonogram)	102
vaccines	337
vascular procedures	51
X-rays	18

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	256
Female	369

**Ethnicity**
Non-Hispanic White	589
Black	0
Hispanic	0
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	284
From 75 to 84	180
85 and over	114
Less than 65	47

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2017

Hypertension	70
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	20
Depression	24
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2018 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

abdominal imaging	41
ambulatory monitoring	20
aspiration	84
blood draw	1134
breathing treatment	17
cardiac procedures	35
diabetes management	234
doctor visit	1700
ear procedures	47
injections	84
lab tests	6566
preventive care	1582
removal of lesion (e.g. growth)	24
skin procedures	24
thyroid function tests	952
ultrasound (sonogram)	124
vaccines	328
vascular procedures	68

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	250
Female	350

**Ethnicity**
Non-Hispanic White	567
Black	0
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	267
From 75 to 84	197
85 and over	99
Less than 65	37

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2018

Hypertension	70
High Cholesterol	65
Stroke	2
Ischemic Heart Disease	23
Depression	27
Chronic Kidney Disease	18
Asthma	8
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2019 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

ambulatory monitoring	21
aspiration	72
blood draw	1147
cardiac procedures	21
diabetes management	273
doctor visit	1882
ear procedures	45
injections	72
lab tests	6686
preventive care	1709
removal of lesion (e.g. growth)	24
skin procedures	24
thyroid function tests	986
vaccines	337

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	272
Female	412

**Ethnicity**
Non-Hispanic White	641
Black	0
Hispanic	0
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	297
From 75 to 84	245
85 and over	95
Less than 65	47

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2019

Hypertension	71
High Cholesterol	66
Stroke	2
Ischemic Heart Disease	25
Depression	27
Chronic Kidney Disease	20
Asthma	9
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2020 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

ambulatory monitoring	18
aspiration	89
blood draw	1240
cardiac procedures	18
diabetes management	296
doctor visit	2200
ear procedures	42
injections	89
lab tests	6639
preventive care	1646
removal of lesion (e.g. growth)	16
skin procedures	16
thyroid function tests	997
vaccines	321

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	369
Female	570

**Ethnicity**
Non-Hispanic White	879
Black	14
Hispanic	0
Asian	0
Other	32
Native American	0

**Age**
From 65 to 74	405
From 75 to 84	324
85 and over	151
Less than 65	59

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2020

Hypertension	66
High Cholesterol	63
Stroke	3
Ischemic Heart Disease	23
Depression	23
Chronic Kidney Disease	22
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	19
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2021 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

ambulatory monitoring	11
aspiration	93
blood draw	1271
cardiac procedures	11
diabetes management	316
doctor visit	2269
ear procedures	51
injections	93
lab tests	6739
preventive care	1412
thyroid function tests	1050
vaccines	184

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	402
Female	542

**Ethnicity**
Non-Hispanic White	888
Black	13
Hispanic	0
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	403
From 75 to 84	339
85 and over	151
Less than 65	51

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2021

Hypertension	66
High Cholesterol	67
Stroke	4
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	18
Dementia	10
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA during 2022 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

aspiration	71
blood draw	1066
diabetes management	242
doctor visit	2032
ear procedures	36
injections	71
lab tests	5411
preventive care	1041
thyroid function tests	849
vaccines	162

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	334
Female	493

**Ethnicity**
Non-Hispanic White	773
Black	0
Hispanic	14
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	323
From 75 to 84	317
85 and over	139
Less than 65	48

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2022

Hypertension	74
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	18
Depression	22
Chronic Kidney Disease	13
Asthma	11
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	15
Chronic Obstructive Pulmonary Disease	13
Diabetes	18
Dementia	8
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Darren Stephen O'Neill, MD for Medicare patients.

The highest averages for the top procedures that Dr. Darren Stephen O'Neill, MD treated as an internist in Springfield, MA were lab tests, preventive care, blood draw and thyroid function tests.

abdominal imaging	20
ambulatory monitoring	17
aspiration	75
blood draw	1092
cardiac procedures	34
diabetes management	250
doctor visit	1755
ear procedures	37
injections	75
lab tests	5706
pelvic imaging	11
preventive care	1518
removal of lesion (e.g. growth)	26
skin procedures	26
thoracic (chest) imaging	17
thyroid function tests	883
ultrasound (sonogram)	106
vaccines	301
vascular procedures	60
X-rays	17

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Darren Stephen O'Neill, MD.

**Gender**
Male	283
Female	397

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	0
Non-Hispanic White	643
Native American / Alaskan Native	0
Hispanic	1
Other	17

**Age**
75 to 84	219
85 and over	122
Less than 65	45
65 to 74	295

Average of Total of Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Darren Stephen O'Neill, MD treated were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension	63
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	19
Depression	21
Chronic Kidney Disease	16
Asthma	8
Osteoporosis	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	17
Atrial Fibrillation	12
Dementia	9
Cancer	11

Education & Training

Dr. Darren Stephen O'Neill, MD graduated from University of Connecticut School of Medicine in 1994. He completed residency at Baystate Medical Center. He is certified by the Internal Medicine, Internal Medicine, American Board and has a state license in Massachusetts.

Medical School: University of Connecticut School of Medicine (1994)

Residency: Baystate Medical Center (1997)

Board Certification: Internal Medicine, Internal Medicine, American Board (1998)

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Darren Stephen O'Neill, MD is associated with these hospitals and organizations:

Baystate Health

Trinity Health of New England

SPRINGFIELD MEDICAL ASSOCIATES, INC

Springfield Medical Associates

Ratings & Reviews

Dr. Darren Stephen O'Neill, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Darren Stephen O'Neill, MD from all over the web to help you find the right in Springfield, MA.

Overall Rating

(5 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2019-04-11

I've been seeing doctor O'Neill for years, and he's always great to work with.  He keeps everything light yet professional and serious, and is always willing to answer as many questions as I have - I never feel rushed at my appointments and feel like I'm his #1 priority while he's in the room with me.

General Payments

These charts describe general payments received by Dr. Darren Stephen O'Neill, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Pfizer Inc.	$241 NURTEC ODT $90	ELIQUIS $27	COLOGUARD $25	PREVNAR - 13 $25	TRUMENBA $24	Other $50
Novo Nordisk Inc	$152 Victoza $106	RYBELSUS $47
COMSORT, Inc	$150 GARDASIL $150
GlaxoSmithKline, LLC.	$57 ANORO ELLIPTA $25	BREO $18	BENLYSTA $14
Sunovion Pharmaceuticals Inc.	$53 GEMTESA $27	Brovana $25
Other	$343 UBRELVY $44	NAMZARIC $38	STIOLTO RESPIMAT $32	PROAIR $25	GEMTESA $23	Other $181

**Types of Payments**
Food and Beverage	$762
Consulting Fee	$175
Education	$39
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$20

Biography

Dr. Darren Oneill is especially interested in internal medicine. He is professionally affiliated with Baystate Medical Center (BMC) and Trinity Health of New England. Before performing his residency at UMass Memorial Medical Center and Baystate Medical Center, Dr. Oneill attended the University of Connecticut School of Medicine. On average, patients gave him a rating of 5.0 stars (out of 5).

Select Year:

Dr. Darren Stephen O'Neill, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Darren Stephen O'Neill, MD in 2023

By Volume:

By Volume:

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. Darren Stephen O'Neill, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Darren Stephen O'Neill, 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. Darren Stephen O'Neill, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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