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Dr. Daniel C. Diffin, MD

Accepting New Patients

(Dr. Daniel Charles Diffin, MD)

(No ratings)

Specializes in: Interventional Radiology/Diagnostic Radiology (IR/DR) and Diagnostic Radiology

New York University (NYU) School of Medicine (1989)

25 Wells Street
Westerly, RI 02891

(860) 415-9248

Dr. Daniel C. Diffin, MD is a radiologist in Westerly, RI specializing in interventional radiology/diagnostic radiology (ir/dr) and diagnostic radiology. He graduated from New York University (NYU) School of Medicine in 1989 and has 37 years of experience. Dr. Daniel C. Diffin, MD is affiliated with Lawrence + Memorial Hospital, Yale New Haven Health and OCEAN RADIOLOGY ASSOCIATES PC.

Office Locations

25 Wells Street
Westerly, RI 02891

(860) 415-9248

(860) 415-9237

open_in_new

Yale New Haven Health

365 Montauk Avenue
New London, CT 06320

(860) 445-5151

(860) 444-3731

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Noteworthy Medicare Patient Procedures Performed by Dr. Daniel C. Diffin, MD in 2023

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

Top 5%

By Volume:

screening mammogram

whole breast ultrasound

By Affordability:

mammogram

screening mammogram

whole breast ultrasound

In 2023, among providers in related specialties within Rhode Island, Dr. Daniel C. Diffin, MD performed more screening mammogram, and whole breast ultrasound procedures for Medicare patients than 95% of them and he also had a list price for mammogram (breast X-ray), screening mammogram, and whole breast ultrasound that was lower than the list prices billed to Medicare by 95% 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.

Top 25%

By Affordability:

breast imaging

In 2012, Dr. Daniel C. Diffin, MD had a list price for breast imaging that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Rhode Island. 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. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2012 were X-rays, thoracic (chest) imaging, CT scan and women's imaging.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	786
aspiration	13
brain imaging (neuroimaging)	244
breast procedures	858
CT scan	1054
diagnostic imaging	172
diagnostic procedures	13
hip imaging	97
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
MRI (magnetic resonance imaging)	89
musculoskeletal imaging	335
neck imaging	62
nuclear scan	60
pelvic imaging	496
preventive care	661
spinal procedures	257
thoracic (chest) imaging	1701
ultrasound (sonogram)	518
vascular procedures	167
women's imaging	872
X-rays	2856

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2013 were X-rays, thoracic (chest) imaging, CT scan and women's imaging.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	669
aspiration	22
brain imaging (neuroimaging)	234
breast procedures	842
CT scan	906
diagnostic imaging	194
diagnostic procedures	22
hip imaging	154
image guided procedures	22
minimally invasive procedures	22
minor procedures	22
MRI (magnetic resonance imaging)	44
musculoskeletal imaging	383
neck imaging	55
nuclear scan	63
pelvic imaging	465
preventive care	613
spinal procedures	258
thoracic (chest) imaging	1584
ultrasound (sonogram)	506
vascular procedures	130
women's imaging	855
X-rays	2849

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	876
Female	1810

**Ethnicity**
Non-Hispanic White	2565
Black	19
Hispanic	24
Asian	0
Other	51
Native American	0

**Age**
From 65 to 74	1013
From 75 to 84	817
85 and over	528
Less than 65	328

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	7
Ischemic Heart Disease	41
Depression	23
Chronic Kidney Disease	24
Asthma	8
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	24
Chronic Obstructive Pulmonary Disease	27
Diabetes	29
Dementia	17
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2014 were X-rays, thoracic (chest) imaging, women's imaging and CT scan.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	683
brain imaging (neuroimaging)	222
breast procedures	923
CT scan	928
diagnostic imaging	206
hip imaging	135
MRI (magnetic resonance imaging)	67
musculoskeletal imaging	357
neck imaging	79
nuclear scan	43
pelvic imaging	454
preventive care	666
spinal procedures	248
thoracic (chest) imaging	1644
ultrasound (sonogram)	525
vascular procedures	108
women's imaging	939
X-rays	2905

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	882
Female	1855

**Ethnicity**
Non-Hispanic White	2624
Black	16
Hispanic	32
Asian	0
Other	39
Native American	0

**Age**
From 65 to 74	1036
From 75 to 84	847
85 and over	526
Less than 65	328

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2014

Hypertension	73
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	39
Depression	23
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	27
Chronic Obstructive Pulmonary Disease	26
Diabetes	29
Dementia	14
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2015 were X-rays, thoracic (chest) imaging, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	653
brain imaging (neuroimaging)	240
breast procedures	1010
CT scan	920
diagnostic imaging	177
hip imaging	127
MRI (magnetic resonance imaging)	45
musculoskeletal imaging	346
neck imaging	73
nuclear scan	44
pelvic imaging	454
preventive care	647
spinal procedures	232
thoracic (chest) imaging	1605
ultrasound (sonogram)	645
vascular procedures	113
women's imaging	1027
X-rays	2813

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	1778
Female	3638

**Ethnicity**
Non-Hispanic White	5136
Black	44
Hispanic	64
Asian	48
Other	98
Native American	26

**Age**
From 65 to 74	2202
From 75 to 84	1636
85 and over	932
Less than 65	646

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2015

Hypertension	74
High Cholesterol	65
Stroke	6
Ischemic Heart Disease	38
Depression	25
Chronic Kidney Disease	25
Asthma	14
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	25
Chronic Obstructive Pulmonary Disease	24
Diabetes	28
Dementia	13
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2016 were X-rays, thoracic (chest) imaging, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	649
aspiration	13
brain imaging (neuroimaging)	216
breast procedures	1167
CT scan	950
diagnostic imaging	215
diagnostic procedures	13
hip imaging	17
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
MRI (magnetic resonance imaging)	37
musculoskeletal imaging	243
neck imaging	61
nuclear scan	29
pelvic imaging	386
preventive care	758
spinal procedures	203
thoracic (chest) imaging	1458
ultrasound (sonogram)	616
vascular procedures	106
women's imaging	1167
X-rays	2577

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	886
Female	1900

**Ethnicity**
Non-Hispanic White	2628
Black	0
Hispanic	41
Asian	23
Other	64
Native American	0

**Age**
From 65 to 74	1199
From 75 to 84	850
85 and over	439
Less than 65	298

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2016

Hypertension	75
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	36
Depression	23
Chronic Kidney Disease	30
Asthma	25
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	24
Chronic Obstructive Pulmonary Disease	24
Diabetes	30
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2017 were X-rays, thoracic (chest) imaging, CT scan and women's imaging.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	960
aspiration	32
brain imaging (neuroimaging)	196
breast procedures	1270
CT scan	1297
diagnostic imaging	206
diagnostic procedures	20
hip imaging	20
image guided procedures	20
minimally invasive procedures	20
minor procedures	20
MRI (magnetic resonance imaging)	71
musculoskeletal imaging	287
neck imaging	76
nuclear scan	21
pelvic imaging	621
pleural drainage	12
preventive care	854
spinal procedures	170
thoracic (chest) imaging	1861
ultrasound (sonogram)	796
vascular procedures	158
vertebral fracture assessment (VFA)	25
women's imaging	1283
X-rays	2932

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	1068
Female	2167

**Ethnicity**
Non-Hispanic White	3043
Black	28
Hispanic	49
Asian	0
Other	78
Native American	0

**Age**
From 65 to 74	1371
From 75 to 84	1010
85 and over	574
Less than 65	280

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2017

Hypertension	73
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	34
Depression	24
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	24
Chronic Obstructive Pulmonary Disease	23
Diabetes	27
Dementia	15
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2018 were X-rays, CT scan, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	329
brain imaging (neuroimaging)	247
breast procedures	359
CT scan	751
diagnostic imaging	24
gastrointestinal procedures	11
musculoskeletal imaging	296
neck imaging	32
nuclear scan	15
pelvic imaging	267
preventive care	292
spinal procedures	245
thoracic (chest) imaging	196
ultrasound (sonogram)	259
vascular procedures	80
vertebral fracture assessment (VFA)	21
women's imaging	359
X-rays	846

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	1278
Female	2028

**Ethnicity**
Non-Hispanic White	2882
Black	117
Hispanic	178
Asian	39
Other	78
Native American	12

**Age**
From 65 to 74	1141
From 75 to 84	1037
85 and over	660
Less than 65	468

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	37
Depression	33
Chronic Kidney Disease	39
Asthma	12
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	28
Chronic Obstructive Pulmonary Disease	29
Diabetes	32
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2019 were X-rays, CT scan, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	252
brain imaging (neuroimaging)	200
breast procedures	369
CT scan	676
diagnostic imaging	20
musculoskeletal imaging	322
neck imaging	13
nuclear scan	13
pelvic imaging	262
preventive care	245
spinal procedures	232
thoracic (chest) imaging	209
ultrasound (sonogram)	170
vascular procedures	25
women's imaging	369
X-rays	861

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	1179
Female	1816

**Ethnicity**
Non-Hispanic White	2588
Black	123
Hispanic	144
Asian	38
Other	85
Native American	17

**Age**
From 65 to 74	1067
From 75 to 84	956
85 and over	582
Less than 65	390

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	37
Depression	34
Chronic Kidney Disease	41
Asthma	11
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	29
Chronic Obstructive Pulmonary Disease	28
Diabetes	32
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2020 were CT scan, X-rays, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	274
brain imaging (neuroimaging)	178
breast procedures	368
CT scan	571
diagnostic imaging	19
musculoskeletal imaging	172
neck imaging	33
nuclear scan	13
pelvic imaging	204
preventive care	229
spinal procedures	106
thoracic (chest) imaging	179
ultrasound (sonogram)	333
vascular procedures	70
women's imaging	368
X-rays	505

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	825
Female	1326

**Ethnicity**
Non-Hispanic White	1881
Black	92
Hispanic	95
Asian	0
Other	52
Native American	0

**Age**
From 65 to 74	761
From 75 to 84	693
85 and over	419
Less than 65	278

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	9
Ischemic Heart Disease	38
Depression	34
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	28
Chronic Obstructive Pulmonary Disease	27
Diabetes	33
Dementia	22
Cancer	18

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2021 were X-rays, CT scan, women's imaging and breast procedures.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

abdominal imaging	210
brain imaging (neuroimaging)	162
breast procedures	500
CT scan	632
diagnostic imaging	37
musculoskeletal imaging	220
pelvic imaging	215
preventive care	351
spinal procedures	114
thoracic (chest) imaging	217
ultrasound (sonogram)	154
vascular procedures	29
women's imaging	500
X-rays	697

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	837
Female	1458

**Ethnicity**
Non-Hispanic White	2007
Black	85
Hispanic	96
Asian	0
Other	68
Native American	0

**Age**
From 65 to 74	861
From 75 to 84	751
85 and over	409
Less than 65	274

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2021

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	36
Depression	33
Chronic Kidney Disease	41
Asthma	10
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	25
Chronic Obstructive Pulmonary Disease	26
Diabetes	29
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI during 2022 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

breast procedures	888
preventive care	834
ultrasound (sonogram)	54
women's imaging	888
X-rays	834

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	21
Female	877

**Ethnicity**
Non-Hispanic White	789
Black	28
Hispanic	29
Asian	0
Other	33
Native American	0

**Age**
From 65 to 74	476
From 75 to 84	312
85 and over	53
Less than 65	57

Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	14
Depression	23
Chronic Kidney Disease	16
Asthma	12
Osteoperosis	26
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	13
Diabetes	20
Dementia	3
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Daniel C. Diffin, MD for Medicare patients.

The highest averages for the top procedures that Dr. Daniel C. Diffin, MD treated as a radiologist in Westerly, RI were X-rays, thoracic (chest) imaging, CT scan and women's imaging.

abdominal imaging	546
aspiration	20
brain imaging (neuroimaging)	213
breast procedures	777
CT scan	868
diagnostic imaging	127
diagnostic procedures	17
gastrointestinal procedures	11
hip imaging	91
image guided procedures	17
minimally invasive procedures	17
minor procedures	17
MRI (magnetic resonance imaging)	58
musculoskeletal imaging	296
neck imaging	53
nuclear scan	33
pelvic imaging	382
pleural drainage	12
preventive care	559
spinal procedures	206
thoracic (chest) imaging	1065
ultrasound (sonogram)	416
vascular procedures	98
vertebral fracture assessment (VFA)	23
women's imaging	784
X-rays	1879

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Daniel C. Diffin, MD.

**Gender**
Male	875
Female	1715

**Ethnicity**
Black / African American	50
Asian / Pacific Islander	13
Non-Hispanic White	2376
Native American / Alaskan Native	5
Hispanic	68
Other	58

**Age**
75 to 84	809
85 and over	465
Less than 65	304
65 to 74	1011

Average of Total of Conditions of Medicare patients treated by Dr. Daniel C. Diffin, MD From 2012 - 2022

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

Hypertension	67
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	31
Depression	25
Chronic Kidney Disease	28
Asthma	10
Osteoporosis	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	22
Diabetes	26
Atrial Fibrillation	16
Dementia	14
Cancer	14

Education & Training

Dr. Daniel C. Diffin, MD graduated from New York University (NYU) School of Medicine in 1989. He has a state license in Rhode Island.

Medical School: New York University (NYU) School of Medicine (1989)

Licensed In: Rhode Island

Affiliations & Hospitals

Dr. Daniel C. Diffin, MD is associated with these hospitals and organizations:

Lawrence + Memorial Hospital

Yale New Haven Health

OCEAN RADIOLOGY ASSOCIATES PC

Ratings & Reviews

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General Payments

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

**Payments by Company**
Siemens Medical Solutions USA, Inc.	$881 USD Ultrasound Systems $881

**Types of Payments**
Travel and Lodging	$789
Food and Beverage	$92

Biography

Dr. Daniel Diffin specializes in interventional radiology/diagnostic radiology (IR/DR) and diagnostic radiology. He is a graduate of New York University (NYU) School of Medicine. He is professionally affiliated with Lawrence + Memorial Hospital. Dr. Diffin's practice in New London, CT is open to new patients as reported by Yale New Haven Health.