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Dr. Robert Walker, MD

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Specializes in: Adult Gastroenterology

1390 W 16th Street
Yuma, AZ 85364

(928) 344-4325

Dr. Robert Walker, MD is a gastroenterologist in Yuma, AZ specializing in adult gastroenterology.

Office Locations

1390 W 16th Street
Yuma, AZ 85364

(928) 344-4325

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95 Crystal Run Road
Middletown, NY 10941

(845) 703-6999

(845) 703-6297

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In The News

“Ann turned to Crystal Run gastroenterologist, Dr. Robert Walker, to keep her care coordinated and all in one place.”—"Story from Crystal Run Healthcare: Ann was just 26 years old when her life changed", USA Today, March 2021

“"It's easy to mistake the symptoms of celiac disease for another condition, possibly even a non-digestive disorder," said Dr. Robert Walker, a gastroenterologist at Crystal Run Healthcare.”—"Story from Crystal Run Healthcare: Common symptoms of celiac disease - and how to get diagnosed", USA Today, October 2020

Noteworthy Medicare Patient Procedures Performed by Dr. Robert Walker, MD in 2023

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

Top 5%

By Volume:

creatinine blood test

In 2023, Dr. Robert Walker, MD performed more creatinine blood test procedures for Medicare patients than 95% of providers in related specialties within Arizona.

Top 25%

By Affordability:

lab tests

In 2012, Dr. Robert Walker, MD had a list price for lab tests that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Arizona. 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. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2012 were minimally invasive procedures, gastrointestinal procedures, lab tests and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	128
diagnostic procedures	374
doctor visit	969
gastrointestinal procedures	458
hospital care	326
inpatient care	326
lab tests	402
minimally invasive procedures	458
preventive care	72
removal of lesion (e.g. growth)	374

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2013 were minimally invasive procedures, gastrointestinal procedures, lab tests and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	149
diagnostic procedures	345
doctor visit	967
gastrointestinal procedures	417
hospital care	259
inpatient care	259
lab tests	395
minimally invasive procedures	417
preventive care	60
removal of lesion (e.g. growth)	345

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	384
Female	453

**Ethnicity**
Non-Hispanic White	733
Black	41
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	402
From 75 to 84	224
85 and over	75
Less than 65	136

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2013

Hypertension	71
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	38
Depression	17
Chronic Kidney Disease	18
Asthma	11
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	21
Diabetes	27
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2014 were hospital care, inpatient care, lab tests and minimally invasive procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	143
diagnostic procedures	288
doctor visit	905
gastrointestinal procedures	316
hospital care	360
inpatient care	360
lab tests	325
minimally invasive procedures	316
preventive care	28
removal of lesion (e.g. growth)	288

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	383
Female	456

**Ethnicity**
Non-Hispanic White	731
Black	39
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	388
From 75 to 84	256
85 and over	79
Less than 65	116

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2014

Hypertension	71
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	41
Depression	18
Chronic Kidney Disease	22
Asthma	13
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2015 were lab tests, minimally invasive procedures, gastrointestinal procedures and hospital care.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	141
diagnostic procedures	282
doctor visit	926
gastrointestinal procedures	317
hospital care	285
inpatient care	285
lab tests	402
minimally invasive procedures	317
preventive care	47
removal of lesion (e.g. growth)	282

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	788
Female	932

**Ethnicity**
Non-Hispanic White	1484
Black	90
Hispanic	88
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	840
From 75 to 84	470
85 and over	152
Less than 65	258

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2015

Hypertension	70
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	35
Depression	18
Chronic Kidney Disease	23
Asthma	19
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2016 were lab tests, removal of lesion (e.g. growth), minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	127
diagnostic procedures	181
doctor visit	785
gastrointestinal procedures	181
lab tests	373
minimally invasive procedures	181
preventive care	12
removal of lesion (e.g. growth)	181

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	267
Female	338

**Ethnicity**
Non-Hispanic White	520
Black	32
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	331
From 75 to 84	169
85 and over	38
Less than 65	67

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2016

Hypertension	71
High Cholesterol	67
Stroke	3
Ischemic Heart Disease	32
Depression	14
Chronic Kidney Disease	22
Asthma	22
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2017 were lab tests, minimally invasive procedures, gastrointestinal procedures and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	136
diagnostic procedures	267
doctor visit	887
gastrointestinal procedures	292
lab tests	383
minimally invasive procedures	292
preventive care	25
removal of lesion (e.g. growth)	267

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	337
Female	363

**Ethnicity**
Non-Hispanic White	599
Black	36
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	359
From 75 to 84	210
85 and over	51
Less than 65	80

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2017

Hypertension	71
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	33
Depression	17
Chronic Kidney Disease	27
Asthma	12
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	119
diagnostic procedures	310
doctor visit	951
gastrointestinal procedures	335
lab tests	258
minimally invasive procedures	335
preventive care	25
removal of lesion (e.g. growth)	310

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	348
Female	401

**Ethnicity**
Non-Hispanic White	640
Black	36
Hispanic	43
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	386
From 75 to 84	241
85 and over	42
Less than 65	80

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2018

Hypertension	71
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	33
Depression	16
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	121
diagnostic procedures	321
doctor visit	898
gastrointestinal procedures	364
lab tests	214
minimally invasive procedures	364
preventive care	43
removal of lesion (e.g. growth)	321

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	336
Female	395

**Ethnicity**
Non-Hispanic White	625
Black	40
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	385
From 75 to 84	225
85 and over	42
Less than 65	79

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2019

Hypertension	67
High Cholesterol	68
Stroke	4
Ischemic Heart Disease	35
Depression	15
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2020 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	77
diagnostic procedures	219
doctor visit	695
gastrointestinal procedures	219
lab tests	128
minimally invasive procedures	219
removal of lesion (e.g. growth)	219

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	274
Female	326

**Ethnicity**
Non-Hispanic White	508
Black	30
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	169
85 and over	34
Less than 65	73

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2020

Hypertension	67
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	35
Depression	16
Chronic Kidney Disease	28
Asthma	13
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	76
diagnostic procedures	269
doctor visit	799
gastrointestinal procedures	312
lab tests	190
minimally invasive procedures	312
preventive care	43
removal of lesion (e.g. growth)	269

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	276
Female	347

**Ethnicity**
Non-Hispanic White	515
Black	39
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	183
85 and over	34
Less than 65	82

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2021

Hypertension	69
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	36
Depression	18
Chronic Kidney Disease	29
Asthma	11
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	17
Diabetes	27
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

blood draw	98
diagnostic procedures	263
doctor visit	770
gastrointestinal procedures	291
hospital care	20
inpatient care	20
lab tests	175
minimally invasive procedures	291
preventive care	28
removal of lesion (e.g. growth)	263

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	291
Female	357

**Ethnicity**
Non-Hispanic White	535
Black	44
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	197
85 and over	48
Less than 65	79

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2022

Hypertension	72
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	34
Depression	18
Chronic Kidney Disease	19
Asthma	16
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	10
Chronic Obstructive Pulmonary Disease	22
Diabetes	28
Dementia	5
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert Walker, MD for Medicare patients.

The highest averages for the top procedures that Dr. Robert Walker, MD treated as a gastroenterologist in Yuma, AZ were minimally invasive procedures, gastrointestinal procedures, lab tests and removal of lesion (e.g. growth).

blood draw	119
diagnostic procedures	283
doctor visit	868
gastrointestinal procedures	318
hospital care	250
inpatient care	250
lab tests	295
minimally invasive procedures	318
preventive care	38
removal of lesion (e.g. growth)	283

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert Walker, MD.

**Gender**
Male	334
Female	397

**Ethnicity**
Black / African American	38
Asian / Pacific Islander	0
Non-Hispanic White	626
Native American / Alaskan Native	0
Hispanic	37
Other	0

**Age**
75 to 84	213
85 and over	54
Less than 65	95
65 to 74	369

Average of Total of Conditions of Medicare patients treated by Dr. Robert Walker, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Robert Walker, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	63
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	32
Depression	15
Chronic Kidney Disease	22
Asthma	12
Osteoporosis	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	26
Atrial Fibrillation	10
Dementia	5
Cancer	12

Education & Training

He has a state license in Arizona.

Licensed In: Arizona

Ratings & Reviews

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General Payments

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

**Payments by Company**
Sunovion Pharmaceuticals Inc.	$171 LATUDA $171
Otsuka Pharmaceutical Development & Commercialization, Inc.	$125 $125
Stryker Corporation	$49 Mako $49
Ipsen Biopharmaceuticals, Inc	$34 Somatuline Depot $34
SI-Bone, Inc.	$30 iFuse Implant $30
Other	$86 DUPIXENT $25	ENTYVIO $24	NAMZARIC $20	Omniscan $17

**Types of Payments**
Food and Beverage	$447
Travel and Lodging	$49

Biography

Dr. Robert Walker is a specialist in adult gastroenterology. Dr. Walker studied medicine at New York Medical College.

Select Year:

Dr. Robert Walker, MD

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Robert Walker, MD in 2023

By Volume:

By Affordability:

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. Robert Walker, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Walker, 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. Robert Walker, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Yuma, AZ