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Dr. Greg B. Marrinan, MD

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Specializes in: Diagnostic Radiology

Albert Einstein College of Medicine of Yeshiva University

4 Corporate Drive Suite 182
Shelton, CT 06484

(203) 337-9729

Dr. Greg B. Marrinan, MD is a diagnostic radiologist in Shelton, CT specializing in diagnostic radiology. He graduated from Albert Einstein College of Medicine of Yeshiva University. Dr. Greg B. Marrinan, MD is affiliated with St. Vincent's Medical Center, Hartford Healthcare and Integrated Care Partners.

Office Locations

Integrated Care Partners

4 Corporate Drive Suite 182
Shelton, CT 06484

(203) 337-9729

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Noteworthy Medicare Patient Procedures Performed by Dr. Greg B. Marrinan, MD in 2023

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

Top 5%

By Affordability:

cardiac MRI

cardiac imaging

In 2023, Dr. Greg B. Marrinan, MD had a list price for cardiac (heart) MRI, and cardiac imaging that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Connecticut. 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.

Top 25%

By Volume:

musculoskeletal imaging

By Affordability:

abdominal CT scan

limited abdominal ultrasound

pelvic CT scan

thoracic imaging

X-rays

In 2012, among providers in related specialties within Connecticut, Dr. Greg B. Marrinan, MD performed more ankle MRI, hip MRI, knee MRI, MRI (magnetic resonance imaging), and musculoskeletal imaging procedures for Medicare patients than 75% of them and he also had a list price for abdominal CT scan, limited abdominal ultrasound, pelvic CT scan, thoracic (chest) imaging, and X-rays that was lower than the list prices billed to Medicare by 75% of them. 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. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2012 were thoracic (chest) imaging, X-rays, abdominal imaging and CT scan.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	402
brain imaging (neuroimaging)	96
CT scan	398
hip imaging	158
MRI (magnetic resonance imaging)	322
musculoskeletal imaging	285
neck imaging	33
nuclear scan	16
pelvic imaging	215
spinal procedures	20
thoracic (chest) imaging	694
ultrasound (sonogram)	303
vascular procedures	130
X-rays	660

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2013 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	366
brain imaging (neuroimaging)	92
CT scan	381
hip imaging	170
MRI (magnetic resonance imaging)	355
musculoskeletal imaging	293
neck imaging	23
pelvic imaging	179
spinal procedures	35
thoracic (chest) imaging	778
ultrasound (sonogram)	259
vascular procedures	118
X-rays	746

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	743
Female	1023

**Ethnicity**
Non-Hispanic White	1353
Black	192
Hispanic	169
Asian	24
Other	28
Native American	0

**Age**
From 65 to 74	650
From 75 to 84	542
85 and over	305
Less than 65	269

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2013

Hypertension	75
High Cholesterol	63
Stroke	9
Ischemic Heart Disease	45
Depression	26
Chronic Kidney Disease	31
Asthma	12
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	22
Diabetes	39
Dementia	17
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2014 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	477
brain imaging (neuroimaging)	147
CT scan	674
hip imaging	183
MRI (magnetic resonance imaging)	334
musculoskeletal imaging	348
neck imaging	16
pelvic imaging	263
spinal procedures	100
thoracic (chest) imaging	1050
ultrasound (sonogram)	250
vascular procedures	107
X-rays	1011

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	861
Female	1199

**Ethnicity**
Non-Hispanic White	1552
Black	238
Hispanic	212
Asian	20
Other	38
Native American	0

**Age**
From 65 to 74	731
From 75 to 84	621
85 and over	386
Less than 65	322

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	46
Depression	29
Chronic Kidney Disease	35
Asthma	14
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	35
Chronic Obstructive Pulmonary Disease	23
Diabetes	38
Dementia	17
Cancer	19

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2015 were X-rays, thoracic (chest) imaging, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	441
brain imaging (neuroimaging)	147
cardiac procedures	16
CT scan	606
hip imaging	232
MRI (magnetic resonance imaging)	390
musculoskeletal imaging	397
neck imaging	12
pelvic imaging	222
spinal procedures	110
thoracic (chest) imaging	946
ultrasound (sonogram)	216
vascular procedures	94
X-rays	997

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	1674
Female	2278

**Ethnicity**
Non-Hispanic White	2906
Black	450
Hispanic	474
Asian	0
Other	78
Native American	0

**Age**
From 65 to 74	1424
From 75 to 84	1078
85 and over	750
Less than 65	700

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	46
Depression	31
Chronic Kidney Disease	38
Asthma	21
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	25
Diabetes	39
Dementia	20
Cancer	17

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2016 were thoracic (chest) imaging, X-rays, CT scan and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	404
brain imaging (neuroimaging)	120
CT scan	504
hip imaging	185
MRI (magnetic resonance imaging)	444
musculoskeletal imaging	380
neck imaging	17
pelvic imaging	201
spinal procedures	44
thoracic (chest) imaging	764
ultrasound (sonogram)	168
vascular procedures	39
X-rays	694

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	768
Female	1034

**Ethnicity**
Non-Hispanic White	1328
Black	204
Hispanic	202
Asian	29
Other	39
Native American	0

**Age**
From 65 to 74	647
From 75 to 84	506
85 and over	360
Less than 65	289

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2016

Hypertension	75
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	44
Depression	31
Chronic Kidney Disease	41
Asthma	30
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	32
Chronic Obstructive Pulmonary Disease	23
Diabetes	38
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2017 were thoracic (chest) imaging, X-rays, CT scan and abdominal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	415
brain imaging (neuroimaging)	111
CT scan	494
hip imaging	169
MRI (magnetic resonance imaging)	412
musculoskeletal imaging	393
neck imaging	21
pelvic imaging	213
spinal procedures	42
thoracic (chest) imaging	735
ultrasound (sonogram)	233
vascular procedures	75
X-rays	679

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	771
Female	1067

**Ethnicity**
Non-Hispanic White	1390
Black	181
Hispanic	185
Asian	22
Other	60
Native American	0

**Age**
From 65 to 74	711
From 75 to 84	528
85 and over	306
Less than 65	293

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2017

Hypertension	75
High Cholesterol	56
Stroke	8
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	41
Asthma	14
Osteoperosis	14
Atrial Fibrilation	18
Heart Failure	28
Chronic Obstructive Pulmonary Disease	22
Diabetes	36
Dementia	21
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2018 were CT scan, MRI (magnetic resonance imaging), musculoskeletal imaging and abdominal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	341
brain imaging (neuroimaging)	124
CT scan	467
hip imaging	152
MRI (magnetic resonance imaging)	425
musculoskeletal imaging	347
neck imaging	16
pelvic imaging	198
spinal procedures	49
thoracic (chest) imaging	111
ultrasound (sonogram)	132
vascular procedures	40
X-rays	32

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	674
Female	915

**Ethnicity**
Non-Hispanic White	1188
Black	167
Hispanic	150
Asian	0
Other	53
Native American	0

**Age**
From 65 to 74	571
From 75 to 84	510
85 and over	289
Less than 65	219

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2018

Hypertension	75
High Cholesterol	71
Stroke	9
Ischemic Heart Disease	41
Depression	33
Chronic Kidney Disease	40
Asthma	13
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	28
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2019 were CT scan, abdominal imaging, MRI (magnetic resonance imaging) and musculoskeletal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	381
brain imaging (neuroimaging)	141
cardiac procedures	14
CT scan	525
hip imaging	113
MRI (magnetic resonance imaging)	341
musculoskeletal imaging	274
neck imaging	27
pelvic imaging	214
spinal procedures	60
thoracic (chest) imaging	113
ultrasound (sonogram)	182
vascular procedures	57
X-rays	50

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	740
Female	974

**Ethnicity**
Non-Hispanic White	1253
Black	193
Hispanic	203
Asian	26
Other	39
Native American	0

**Age**
From 65 to 74	599
From 75 to 84	533
85 and over	301
Less than 65	281

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2019

Hypertension	75
High Cholesterol	71
Stroke	10
Ischemic Heart Disease	42
Depression	34
Chronic Kidney Disease	45
Asthma	15
Osteoperosis	14
Atrial Fibrilation	21
Heart Failure	30
Chronic Obstructive Pulmonary Disease	23
Diabetes	39
Dementia	22
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2020 were CT scan, abdominal imaging, pelvic imaging and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	352
brain imaging (neuroimaging)	198
CT scan	693
hip imaging	51
MRI (magnetic resonance imaging)	154
musculoskeletal imaging	144
neck imaging	16
pelvic imaging	246
spinal procedures	109
thoracic (chest) imaging	150
ultrasound (sonogram)	141
vascular procedures	48
X-rays	55

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	795
Female	907

**Ethnicity**
Non-Hispanic White	1243
Black	200
Hispanic	195
Asian	0
Other	43
Native American	0

**Age**
From 65 to 74	548
From 75 to 84	536
85 and over	356
Less than 65	262

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2020

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	45
Depression	37
Chronic Kidney Disease	50
Asthma	14
Osteoperosis	13
Atrial Fibrilation	23
Heart Failure	34
Chronic Obstructive Pulmonary Disease	23
Diabetes	41
Dementia	27
Cancer	18

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2021 were CT scan, abdominal imaging, pelvic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	427
brain imaging (neuroimaging)	191
CT scan	698
hip imaging	50
MRI (magnetic resonance imaging)	151
musculoskeletal imaging	144
neck imaging	34
pelvic imaging	292
spinal procedures	83
thoracic (chest) imaging	199
ultrasound (sonogram)	240
vascular procedures	84
X-rays	121

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	910
Female	1042

**Ethnicity**
Non-Hispanic White	1504
Black	164
Hispanic	184
Asian	38
Other	62
Native American	0

**Age**
From 65 to 74	649
From 75 to 84	682
85 and over	406
Less than 65	215

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2021

Hypertension	75
High Cholesterol	73
Stroke	10
Ischemic Heart Disease	46
Depression	30
Chronic Kidney Disease	47
Asthma	13
Osteoperosis	14
Atrial Fibrilation	21
Heart Failure	30
Chronic Obstructive Pulmonary Disease	23
Diabetes	36
Dementia	22
Cancer	18

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT during 2022 were CT scan, MRI (magnetic resonance imaging), abdominal imaging and musculoskeletal imaging.

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

abdominal imaging	308
brain imaging (neuroimaging)	93
cardiac procedures	14
CT scan	414
hip imaging	84
MRI (magnetic resonance imaging)	323
musculoskeletal imaging	255
neck imaging	13
pelvic imaging	159
spinal procedures	62
thoracic (chest) imaging	89
ultrasound (sonogram)	128
vascular procedures	51
X-rays	68

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	698
Female	850

**Ethnicity**
Non-Hispanic White	1196
Black	109
Hispanic	145
Asian	28
Other	70
Native American	0

**Age**
From 65 to 74	538
From 75 to 84	512
85 and over	316
Less than 65	182

Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	39
Depression	29
Chronic Kidney Disease	31
Asthma	16
Osteoperosis	19
Atrial Fibrilation	29
Heart Failure	31
Chronic Obstructive Pulmonary Disease	25
Diabetes	35
Dementia	15
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Greg B. Marrinan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Greg B. Marrinan, MD treated as a diagnostic radiologist in Shelton, CT were CT scan, thoracic (chest) imaging, X-rays and abdominal imaging.

abdominal imaging	392
brain imaging (neuroimaging)	132
cardiac procedures	14
CT scan	532
hip imaging	140
MRI (magnetic resonance imaging)	331
musculoskeletal imaging	296
neck imaging	20
nuclear scan	16
pelvic imaging	218
spinal procedures	64
thoracic (chest) imaging	511
ultrasound (sonogram)	204
vascular procedures	76
X-rays	464

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Greg B. Marrinan, MD.

**Gender**
Male	784
Female	1026

**Ethnicity**
Black / African American	190
Asian / Pacific Islander	17
Non-Hispanic White	1355
Native American / Alaskan Native	0
Hispanic	192
Other	46

**Age**
75 to 84	549
85 and over	343
Less than 65	275
65 to 74	642

Average of Total of Conditions of Medicare patients treated by Dr. Greg B. Marrinan, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Greg B. Marrinan, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	39
Depression	28
Chronic Kidney Disease	36
Asthma	14
Osteoporosis	12
Heart Failure	28
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Atrial Fibrillation	19
Dementia	18
Cancer	16

Education & Training

Dr. Greg B. Marrinan, MD graduated from Albert Einstein College of Medicine of Yeshiva University. He completed residency at Montefiore Medical Center. He has a state license in Connecticut.

Medical School: Albert Einstein College of Medicine of Yeshiva University

Residency: Montefiore Medical Center

Licensed In: Connecticut

Affiliations & Hospitals

Dr. Greg B. Marrinan, MD is associated with these hospitals and organizations:

St. Vincent's Medical Center

Hartford Healthcare

Integrated Care Partners

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. Greg B. Marrinan, MD appears to accept the following insurance providers: CorVel, Great-West Healthcare, WellCare, Evercare, MultiPlan, United Healthcare, Aetna, Oxford Health Plans, Coventry, Cigna, Anthem, ConnectiCare, Focus Health Solutions, Prime Health, First Health, Private Healthcare Systems (PHCS), CarePartners of Connecticut, Senior Whole Health, Health Direct, Colonial Cooperative Care, BCBS Medicare, Inc., Health Connecticut, Health New England, Healthy Connecticut, Connecticare Commercial, Essence Healthcare, Connecticare Medicare, Community Health Network of Connecticut and Northeast Health Direct.

Insurance Accepted by Provider includes:

According to our sources, Dr. Greg B. Marrinan, MD accepts the following insurance providers:

CorVel

Great-West Healthcare

WellCare

Evercare

MultiPlan

United Healthcare

Aetna

Oxford Health Plans

Coventry

Cigna

Anthem

ConnectiCare

Focus Health Solutions

Prime Health

First Health

Private Healthcare Systems (PHCS)

CarePartners of Connecticut

Senior Whole Health

Health Direct

Colonial Cooperative Care

BCBS Medicare

Inc.

Health Connecticut

Health New England

Healthy Connecticut

Connecticare Commercial

Essence Healthcare

Connecticare Medicare

Community Health Network of Connecticut

Northeast Health Direct

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Biography

Dr. Greg Marrinan is a specialist in diagnostic radiology. Dr. Marrinan is affiliated with Hartford Healthcare and St. Vincent's Medical Center. He obtained his medical school training at Albert Einstein College of Medicine of Yeshiva University and performed his residency at Montefiore Medical Center. He seems to be an in-network provider for Anthem, ConnectiCare, and Blue California, as well as other insurance carriers. According to Hartford Healthcare, Dr. Marrinan is currently accepting new patients at his office in Shelton, CT.