Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > AR Providers > Endocrinologists

Mrs. Melanie Kristin Sutton, APRN

Accepting New Patients

(Melanie Kristin Sutton, APRN)

(134 Ratings)

Specializes in: Endocrinology Diabetes & Metabolism

3333 Pinnacle Hills Parkway Suite 300B Mercy Clinic Endocrinology
Rogers, AR 72758

(479) 338-4600

Mrs. Melanie Kristin Sutton, APRN is a nurse in Rogers, AR specializing in endocrinology diabetes & metabolism. Mrs. Melanie Kristin Sutton, APRN is affiliated with Mercy Health System, MERCY HEALTH NORTHWEST ARKANSAS COMMUNITIES and Mercy Clinic Endocrinology - Pinnacle Hills.

Office Locations

3333 Pinnacle Hills Parkway Suite 300B Mercy Clinic Endocrinology
Rogers, AR 72758

open_in_new

Noteworthy Medicare Patient Procedures Performed by Mrs. Melanie Kristin Sutton, APRN in 2023

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

Top 25%

By Volume:

A1C test

In 2013, Mrs. Melanie Kristin Sutton, APRN performed more A1C test procedures for Medicare patients than 75% of providers in related specialties within Arkansas.

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2013 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	49
diabetes management	357
doctor visit	555
lab tests	493
preventive care	378
thyroid function tests	68

2013 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	94
Female	124

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	0
85 and over	0
Less than 65	73

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2013

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2013 were diabetes, high cholesterol, hypertension and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	52
Depression	29
Chronic Kidney Disease	37
Asthma	6
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	75
Dementia	0
Cancer	6

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2014 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	77
diabetes management	409
doctor visit	578
lab tests	566
preventive care	427
thyroid function tests	80

2014 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	101
Female	116

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

**Age**
From 65 to 74	94
From 75 to 84	0
85 and over	0
Less than 65	78

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2014

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2014 were diabetes, hypertension, high cholesterol and ischemic heart disease.

Hypertension	75
High Cholesterol	74
Stroke	8
Ischemic Heart Disease	55
Depression	31
Chronic Kidney Disease	40
Asthma	8
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	29
Chronic Obstructive Pulmonary Disease	18
Diabetes	75
Dementia	7
Cancer	5

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2015 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	71
diabetes management	411
doctor visit	566
lab tests	623
preventive care	425
thyroid function tests	138

2015 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	186
Female	272

**Ethnicity**
Non-Hispanic White	420
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	0
85 and over	0
Less than 65	150

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2015

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2015 were diabetes, hypertension, high cholesterol and ischemic heart disease.

Hypertension	75
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	51
Depression	24
Chronic Kidney Disease	42
Asthma	13
Osteoperosis	5
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	16
Diabetes	75
Dementia	7
Cancer	5

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2016 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	83
diabetes management	412
doctor visit	570
lab tests	687
preventive care	429
thyroid function tests	189

2016 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	93
Female	149

**Ethnicity**
Non-Hispanic White	221
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	0
85 and over	0
Less than 65	76

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2016

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2016 were diabetes, hypertension, high cholesterol and chronic kidney disease.

Hypertension	75
High Cholesterol	74
Stroke	5
Ischemic Heart Disease	50
Depression	28
Chronic Kidney Disease	69
Asthma	20
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	26
Chronic Obstructive Pulmonary Disease	17
Diabetes	75
Dementia	10
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2017 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

diabetes management	382
doctor visit	525
lab tests	604
preventive care	404
thyroid function tests	118

2017 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	85
Female	119

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	0
85 and over	0
Less than 65	67

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2017

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2017 were chronic kidney disease, diabetes, hypertension and high cholesterol.

Hypertension	75
High Cholesterol	74
Stroke	7
Ischemic Heart Disease	55
Depression	31
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	23
Chronic Obstructive Pulmonary Disease	16
Diabetes	75
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2018 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	12
diabetes management	394
doctor visit	577
lab tests	561
preventive care	412
thyroid function tests	94

2018 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	104
Female	126

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	0
85 and over	0
Less than 65	72

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2018

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2018 were chronic kidney disease, diabetes, high cholesterol and hypertension.

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	54
Depression	31
Chronic Kidney Disease	75
Asthma	8
Osteoperosis	5
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	75
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2019 were lab tests, preventive care, diabetes management and thyroid function tests.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

blood draw	58
diabetes management	290
doctor visit	387
lab tests	393
preventive care	290
thyroid function tests	87

2019 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	102
Female	108

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

**Age**
From 65 to 74	93
From 75 to 84	59
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2019

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2019 were diabetes, hypertension, chronic kidney disease and high cholesterol.

Hypertension	75
High Cholesterol	73
Stroke	0
Ischemic Heart Disease	53
Depression	29
Chronic Kidney Disease	73
Asthma	9
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	27
Chronic Obstructive Pulmonary Disease	14
Diabetes	75
Dementia	9
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2020 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

diabetes management	129
doctor visit	213
lab tests	129
preventive care	129

2020 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	53
Female	85

**Ethnicity**
Non-Hispanic White	124
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	71
From 75 to 84	33
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2020

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2020 were diabetes, hypertension, chronic kidney disease and high cholesterol.

Hypertension	75
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	53
Depression	32
Chronic Kidney Disease	70
Asthma	0
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	30
Chronic Obstructive Pulmonary Disease	17
Diabetes	75
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2021 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

diabetes management	252
doctor visit	386
lab tests	252
preventive care	252

2021 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	80
Female	126

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2021

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2021 were diabetes, hypertension, chronic kidney disease and high cholesterol.

Hypertension	72
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	53
Depression	28
Chronic Kidney Disease	69
Asthma	7
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	25
Chronic Obstructive Pulmonary Disease	13
Diabetes	75
Dementia	9
Cancer	6

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2022 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

diabetes management	204
doctor visit	332
lab tests	204
preventive care	204

2022 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	77
Female	110

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

**Age**
From 65 to 74	101
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2022

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2022 were diabetes, high cholesterol, hypertension and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	38
Depression	23
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	75
Dementia	0
Cancer	6

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR during 2023 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

diabetes management	236
doctor visit	414
lab tests	236
preventive care	236

2023 Medicare Patient Data

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	82
Female	101

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

**Age**
From 65 to 74	97
From 75 to 84	52
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2023

The most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated during 2023 were diabetes, high cholesterol, hypertension and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	38
Depression	28
Chronic Kidney Disease	37
Asthma	9
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	21
Chronic Obstructive Pulmonary Disease	14
Diabetes	75
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Mrs. Melanie Kristin Sutton, APRN for Medicare patients.

The highest averages for the top procedures that Mrs. Melanie Kristin Sutton, APRN treated as a nurse in Rogers, AR were lab tests, preventive care, diabetes management and thyroid function tests.

blood draw	58
diabetes management	316
doctor visit	463
lab tests	431
preventive care	326
thyroid function tests	110

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN.

**Gender**
Male	96
Female	130

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	207
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
75 to 84	22
85 and over	0
Less than 65	46
65 to 74	105

Average of Total of Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Mrs. Melanie Kristin Sutton, APRN treated were diabetes, hypertension, high cholesterol and chronic kidney disease.

Hypertension	74
High Cholesterol	71
Stroke	3
Ischemic Heart Disease	50
Depression	28
Chronic Kidney Disease	56
Asthma	9
Osteoporosis	8
Heart Failure	24
Chronic Obstructive Pulmonary Disease	15
Diabetes	75
Atrial Fibrillation	13
Cancer	7
Dementia	6

Education & Training

She is certified by the Board Certification: American Academy of Nurse Practitioners (Family Nurse Practitioner) and has a state license in Arkansas.

Board Certification: Board Certification: American Academy of Nurse Practitioners (Family Nurse Practitioner)

Licensed In: Arkansas

Affiliations & Hospitals

Mrs. Melanie Kristin Sutton, APRN is associated with these hospitals and organizations:

Mercy Health System

MERCY HEALTH NORTHWEST ARKANSAS COMMUNITIES

Mercy Clinic Endocrinology - Pinnacle Hills

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.

Mrs. Melanie Kristin Sutton, APRN appears to accept the following insurance providers: Cigna, MultiPlan/PHCS, Aetna, CareWorks Managed Care Services (formerly Rockport Workers Comp), Anthem BlueCross BlueShield, QualChoice, United Healthcare, TriWest (VA), Humana, Municipal Health Benefit Fund, Employers' Health Choice PPO (HealthSCOPE), Empower Health Care Solutions (PASSE), Each Care Network, Arkansas Health & Wellness (formerly NovaSys Health) and PPO Plus (formerly AMCO).

Insurance Accepted by Provider includes:

According to our sources, Mrs. Melanie Kristin Sutton, APRN accepts the following insurance providers:

Cigna

MultiPlan/PHCS

Aetna

CareWorks Managed Care Services (formerly Rockport Workers Comp)

Anthem BlueCross BlueShield

QualChoice

United Healthcare

TriWest (VA)

Humana

Municipal Health Benefit Fund

Employers' Health Choice PPO (HealthSCOPE)

Empower Health Care Solutions (PASSE)

Each Care Network

Arkansas Health & Wellness (formerly NovaSys Health)

PPO Plus (formerly AMCO)

Ratings & Reviews

Mrs. Melanie Kristin Sutton, APRN has an exceptional overall rating with an average of 4.95 out of 5 stars based on 134 ratings. We collect ratings and reviews of Mrs. Melanie Kristin Sutton, APRN from all over the web to help you find the right in Rogers, AR.

4.95

Overall Rating

(134 Ratings)

Leave a Review

General Payments

These charts describe general payments received by Mrs. Melanie Kristin Sutton, APRN. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
INSULET CORPORATION	$477 Omnipod $477
Abbott Laboratories	$353 FreeStyle Libre $353
Dexcom, Inc.	$300 DEXCOM G6 TRANSMITTER $175	DEXCOM G7 GSS (161) $125
SANOFI-AVENTIS U.S. LLC	$203 TZIELD $143	SOLIQUA 100/33 $43	TOUJEO $17
Medtronic, Inc.	$195 MINIMED 780G $175	INTELLIS ADAPTIVESTIM $21
Other	$1,268 JARDIANCE $219	MOUNJARO $106	Repatha $87	TERIPARATIDE $78	Ozempic $76	Other $701

**Types of Payments**
Food and Beverage	$2,797

Biography

Ms. Melanie Sutton specializes in endocrinology. She has received a 5.0 out of 5 star rating by her patients. She is affiliated with Mercy Health System. Ms. Sutton appears to be an in-network provider for MultiPlan, Anthem, Rockport Healthcare Group, and more. According to Yext, Ms. Sutton is currently accepting new patients at her office in Rogers, AR.

Select Year:

Mrs. Melanie Kristin Sutton, APRN

Office Locations

Noteworthy Medicare Patient Procedures Performed by Mrs. Melanie Kristin Sutton, APRN in 2023

By Volume:

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Average Medicare Patient Data From 2013 - 2023

Average of Total of Conditions of Medicare patients treated by Mrs. Melanie Kristin Sutton, APRN From 2013 - 2023

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

Endocrinologists in Nearby Locations

Other Providers in Rogers, AR