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Dr. Arley F. Diaz, MD

Accepting New Patients

(Dr. Arley Diaz, MD)

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Specializes in: Adult Nephrology

134 Capital Drive Suite E
West Springfield, MA 01089

(413) 733-0010

Dr. Arley F. Diaz, MD is a nephrologist in West Springfield, MA specializing in adult nephrology. Dr. Arley F. Diaz, MD is affiliated with Baystate Health, Kidney Care and Transplant Services of New England, PC and KIDNEY CARE AND TRANSPLANT SERVICES OF NEW ENGLAND PC.

Office Locations

134 Capital Drive Suite E
West Springfield, MA 01089

(413) 733-0010

(413) 417-2978

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In The News

“Republican photo by MICHAEL S. GORODN From left, at the Hampden County Physician Associates-sponsored "Thanksgiving-in Spring" informational health and services fair at the World War II Club in...”—"Thanksgiving in Spring, skin screening, bargain hand bags among events featured in week's Pioneer Valley medical notes", Mass Live, April 2012

Noteworthy Medicare Patient Procedures Performed by Dr. Arley F. Diaz, MD in 2023

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

Top 5%

By Affordability:

In 2023, Dr. Arley F. Diaz, MD had a list price for blood count tests, blood tests, hemoglobin test, and lab tests that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Massachusetts. 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 10%

By Volume:

inpatient hospital care

In 2023, Dr. Arley F. Diaz, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within Massachusetts.

Top 25%

By Affordability:

hemodialysis

In 2012, Dr. Arley F. Diaz, MD had a list price for hemodialysis that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Massachusetts. 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. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2012 were lab tests, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	376
catheterization	12
diabetes management	14
dialysis	210
doctor visit	733
hospital care	1165
inpatient care	1165
lab tests	3336
preventive care	35

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2013 were lab tests, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	367
dialysis	310
doctor visit	426
hospital care	1875
inpatient care	1875
lab tests	2903
preventive care	15

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	514
Female	447

**Ethnicity**
Non-Hispanic White	620
Black	96
Hispanic	230
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	295
From 75 to 84	216
85 and over	141
Less than 65	309

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2013

Hypertension	75
High Cholesterol	69
Stroke	9
Ischemic Heart Disease	55
Depression	38
Chronic Kidney Disease	75
Asthma	17
Osteoperosis	10
Atrial Fibrilation	24
Heart Failure	58
Chronic Obstructive Pulmonary Disease	28
Diabetes	63
Dementia	20
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2014 were lab tests, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	341
dialysis	151
doctor visit	328
hospital care	1891
inpatient care	1891
lab tests	2793
preventive care	21

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	472
Female	377

**Ethnicity**
Non-Hispanic White	553
Black	91
Hispanic	190
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	226
85 and over	115
Less than 65	246

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	62
Depression	39
Chronic Kidney Disease	75
Asthma	15
Osteoperosis	8
Atrial Fibrilation	27
Heart Failure	62
Chronic Obstructive Pulmonary Disease	27
Diabetes	66
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2015 were lab tests, hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	267
diabetes management	19
dialysis	287
doctor visit	324
hemofiltration	26
hospital care	1514
inpatient care	1514
lab tests	2333
preventive care	36

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	1118
Female	830

**Ethnicity**
Non-Hispanic White	1268
Black	200
Hispanic	428
Asian	30
Other	22
Native American	0

**Age**
From 65 to 74	600
From 75 to 84	530
85 and over	252
Less than 65	566

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2015

Hypertension	75
High Cholesterol	74
Stroke	13
Ischemic Heart Disease	60
Depression	38
Chronic Kidney Disease	75
Asthma	25
Osteoperosis	8
Atrial Fibrilation	29
Heart Failure	60
Chronic Obstructive Pulmonary Disease	29
Diabetes	63
Dementia	20
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2016 were lab tests, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	408
diabetes management	108
dialysis	274
doctor visit	427
hospital care	1575
inpatient care	1575
lab tests	3841
minimally invasive procedures	13
preventive care	108

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	526
Female	423

**Ethnicity**
Non-Hispanic White	593
Black	111
Hispanic	215
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	303
From 75 to 84	227
85 and over	134
Less than 65	285

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2016

Hypertension	75
High Cholesterol	74
Stroke	10
Ischemic Heart Disease	60
Depression	40
Chronic Kidney Disease	75
Asthma	36
Osteoperosis	7
Atrial Fibrilation	28
Heart Failure	63
Chronic Obstructive Pulmonary Disease	30
Diabetes	64
Dementia	26
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2017 were lab tests, hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

blood draw	123
diabetes management	40
dialysis	274
doctor visit	366
hospital care	1087
inpatient care	1087
lab tests	1261
minimally invasive procedures	21
preventive care	40

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	423
Female	358

**Ethnicity**
Non-Hispanic White	493
Black	90
Hispanic	171
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	251
From 75 to 84	192
85 and over	92
Less than 65	246

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2017

Hypertension	75
High Cholesterol	71
Stroke	10
Ischemic Heart Disease	58
Depression	41
Chronic Kidney Disease	75
Asthma	15
Osteoperosis	7
Atrial Fibrilation	24
Heart Failure	61
Chronic Obstructive Pulmonary Disease	28
Diabetes	64
Dementia	22
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2018 were hospital care, inpatient care, lab tests and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

dialysis	67
doctor visit	744
hospital care	602
inpatient care	602
lab tests	137
minimally invasive procedures	50

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	384
Female	274

**Ethnicity**
Non-Hispanic White	427
Black	60
Hispanic	144
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	155
85 and over	67
Less than 65	195

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2018

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	49
Depression	32
Chronic Kidney Disease	75
Asthma	14
Osteoperosis	5
Atrial Fibrilation	19
Heart Failure	50
Chronic Obstructive Pulmonary Disease	22
Diabetes	58
Dementia	20
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2019 were hospital care, inpatient care, lab tests and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

dialysis	100
doctor visit	842
hospital care	815
inpatient care	815
lab tests	159
minimally invasive procedures	60

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	389
Female	297

**Ethnicity**
Non-Hispanic White	483
Black	63
Hispanic	118
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	254
From 75 to 84	174
85 and over	85
Less than 65	173

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	52
Depression	31
Chronic Kidney Disease	75
Asthma	14
Osteoperosis	7
Atrial Fibrilation	24
Heart Failure	51
Chronic Obstructive Pulmonary Disease	23
Diabetes	58
Dementia	20
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2020 were hospital care, inpatient care, lab tests and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

dialysis	121
doctor visit	466
hospital care	995
inpatient care	995
lab tests	135
minimally invasive procedures	45

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	458
Female	313

**Ethnicity**
Non-Hispanic White	560
Black	58
Hispanic	119
Asian	12
Other	22
Native American	0

**Age**
From 65 to 74	310
From 75 to 84	195
85 and over	92
Less than 65	174

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	46
Depression	35
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	6
Atrial Fibrilation	23
Heart Failure	47
Chronic Obstructive Pulmonary Disease	21
Diabetes	55
Dementia	20
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2021 were hospital care, inpatient care, lab tests and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

dialysis	95
doctor visit	377
hospital care	1158
inpatient care	1158
lab tests	157
minimally invasive procedures	29

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	436
Female	352

**Ethnicity**
Non-Hispanic White	620
Black	42
Hispanic	87
Asian	11
Other	28
Native American	0

**Age**
From 65 to 74	301
From 75 to 84	241
85 and over	118
Less than 65	128

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2021

Hypertension	75
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	45
Depression	34
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	8
Atrial Fibrilation	21
Heart Failure	45
Chronic Obstructive Pulmonary Disease	22
Diabetes	49
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA during 2022 were hospital care, inpatient care, lab tests and dialysis.

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

dialysis	76
doctor visit	701
hospital care	951
inpatient care	951
lab tests	269

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	414
Female	368

**Ethnicity**
Non-Hispanic White	624
Black	44
Hispanic	73
Asian	15
Other	26
Native American	0

**Age**
From 65 to 74	297
From 75 to 84	257
85 and over	115
Less than 65	113

Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD in 2022

Hypertension	75
High Cholesterol	73
Stroke	11
Ischemic Heart Disease	38
Depression	30
Chronic Kidney Disease	75
Asthma	15
Osteoperosis	11
Atrial Fibrilation	31
Heart Failure	40
Chronic Obstructive Pulmonary Disease	25
Diabetes	50
Dementia	11
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Arley F. Diaz, MD for Medicare patients.

The highest averages for the top procedures that Dr. Arley F. Diaz, MD treated as a nephrologist in West Springfield, MA were lab tests, hospital care, inpatient care and blood draw.

blood draw	313
catheterization	12
diabetes management	45
dialysis	178
doctor visit	521
hemofiltration	26
hospital care	1238
inpatient care	1238
lab tests	1574
minimally invasive procedures	36
preventive care	42

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Arley F. Diaz, MD.

**Gender**
Male	466
Female	367

**Ethnicity**
Black / African American	77
Asian / Pacific Islander	6
Non-Hispanic White	567
Native American / Alaskan Native	0
Hispanic	161
Other	8

**Age**
75 to 84	219
85 and over	110
Less than 65	221
65 to 74	283

Average of Total of Conditions of Medicare patients treated by Dr. Arley F. Diaz, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Arley F. Diaz, MD treated were chronic kidney disease, hypertension, high cholesterol and diabetes.

Hypertension	68
High Cholesterol	64
Stroke	8
Ischemic Heart Disease	47
Depression	32
Chronic Kidney Disease	68
Asthma	15
Osteoporosis	7
Heart Failure	48
Chronic Obstructive Pulmonary Disease	23
Diabetes	53
Atrial Fibrillation	22
Dementia	18
Cancer	10

Education & Training

He completed residency at MetroWest Medical Center. He is certified by the Nephrology, American Board of Internal Medicine and has a state license in Massachusetts.

Residency: MetroWest Medical Center (2000)

Board Certification: Nephrology, American Board of Internal Medicine

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Arley F. Diaz, MD is associated with these hospitals and organizations:

Baystate Health

Kidney Care and Transplant Services of New England, PC

KIDNEY CARE AND TRANSPLANT SERVICES OF NEW ENGLAND PC

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. Arley F. Diaz, MD appears to accept the following insurance providers: Harvard Pilgrim Health Care, Blue Cross Blue Shield HMO, Tufts Health Plan, United Healthcare, Aetna, Unicare, TRICARE, Medicare, Medicaid, Railroad Medicare, Cigna, ConnectiCare, CeltiCare, First Health, Private Healthcare Systems (PHCS), Network Health, NORTHEAST DIRECT, BLUE SHIELD MEDICARE ADV, COMMONWEALTH CARE ALLIANCE, HEALTH NEW ENGLAND, CONSOLIDATED and BLUE SHIELD PPO IND.

Insurance Accepted by Provider includes:

According to our sources, Dr. Arley F. Diaz, MD accepts the following insurance providers:

Harvard Pilgrim Health Care

Blue Cross Blue Shield HMO

Tufts Health Plan

United Healthcare

Aetna

Unicare

TRICARE

Medicare

Medicaid

Railroad Medicare

Cigna

ConnectiCare

CeltiCare

First Health

Private Healthcare Systems (PHCS)

Network Health

NORTHEAST DIRECT

BLUE SHIELD MEDICARE ADV

COMMONWEALTH CARE ALLIANCE

HEALTH NEW ENGLAND

CONSOLIDATED

BLUE SHIELD PPO IND

Ratings & Reviews

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General Payments

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

**Payments by Company**
Eurofins Viracor, Inc.	$34 $34
Genentech USA, Inc.	$33 Rituxan $33
Janssen Pharmaceuticals, Inc	$18 INVOKANA $18
Fresenius USA Marketing, Inc.	$14 Velphoro $14
Retrophin, Inc.	$5 (815) Thiola $5

**Types of Payments**
Food and Beverage	$99
Education	$5

Biography

Dr. Arley Diaz works as an adult nephrology. His medical residency was performed at MetroWest Medical Center. Dr. Diaz accepts ConnectiCare, Blue California, and Coventry, in addition to other insurance carriers. He is professionally affiliated with Baystate Medical Center (BMC). According to Baystate Health, new patients are welcome to contact Dr. Diaz's office in West Springfield, MA.