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Home > TX Providers > Vascular Surgeons

Dr. Chance Loomis Irwin, MD

(No ratings)

Specializes in: Vascular Surgery

Texas A & M Health Science Center College of Medicine (2002)

1000 Coulter Street South Suite 200
Amarillo, TX 79106

(806) 212-6604

Dr. Chance Loomis Irwin, MD is a vascular surgeon in Amarillo, TX specializing in vascular surgery. He graduated from Texas A & M Health Science Center College of Medicine in 2002 and has 24 years of experience. Dr. Chance Loomis Irwin, MD is affiliated with Amarillo Surgical Group.

Office Locations

1000 Coulter Street South Suite 200
Amarillo, TX 79106

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Noteworthy Medicare Patient Procedures Performed by Dr. Chance Loomis Irwin, MD in 2023

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

Top 5%

By Affordability:

abdominal aortogram

abdominal duplex ultrasound

angiogram

ankle brachial index

aortogram

carotid duplex ultrasound

carotid ultrasound

duplex ultrasound

lower extremity venous ultrasound

lower extremity venous duplex

pelvic duplex ultrasound

testicular duplex ultrasound

vascular physiologic studies

vascular studies

vascular ultrasound

venous duplex ultrasound

venous ultrasound

In 2023, Dr. Chance Loomis Irwin, MD had a list price for abdominal aortogram, abdominal duplex ultrasound, angiogram (angiography), ankle brachial index (ABI), aortogram, carotid duplex ultrasound, carotid ultrasound, duplex ultrasound, lower extremity (leg) venous ultrasound, lower extremity venous duplex, pelvic duplex ultrasound, testicular duplex ultrasound, vascular physiologic studies, vascular studies, vascular ultrasound, venous duplex ultrasound, and venous ultrasound that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Texas. 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 Affordability:

arterial duplex ultrasound

arterial ultrasound

arteriogram

lower extremity arterial duplex

lower extremity arterial ultrasound

In 2023, Dr. Chance Loomis Irwin, MD had a list price for arterial duplex ultrasound, arterial ultrasound, arteriogram, lower extremity arterial duplex, and lower extremity (leg) arterial ultrasound that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Texas. 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:

carotid duplex ultrasound

ultrasound

vascular procedures

By Affordability:

carotid endarterectomy

endarterectomy

extremity arteriogram

hospital care

inpatient care

inpatient hospital care

peripheral angiogram

subclavian endarterectomy

transcervical subclavian endarterectomy

vertebral endarterectomy

In 2012, among providers in related specialties within Texas, Dr. Chance Loomis Irwin, MD performed more carotid duplex ultrasound, ultrasound (sonogram), and vascular procedures procedures for Medicare patients than 75% of them and he also had a list price for carotid endarterectomy, endarterectomy, extremity arteriogram, hospital care, inpatient care, inpatient hospital care (for patient admitted to hospital), peripheral (arm or leg) angiogram, subclavian endarterectomy, transcervical subclavian endarterectomy, and vertebral endarterectomy 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. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2012 were vascular procedures, ultrasound (sonogram), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	163
abdominal surgery	21
angioplasty	29
catheterization	13
doctor visit	490
endarterectomy	22
gastrointestinal procedures	21
hospital care	144
inpatient care	144
minimally invasive procedures	29
neck surgery	22
open surgery	21
pelvic imaging	163
ultrasound (sonogram)	1011
vascular procedures	1273

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2013 were vascular procedures, ultrasound (sonogram), inpatient care and hospital care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	71
abdominal surgery	12
catheterization	16
doctor visit	412
endarterectomy	19
gastrointestinal procedures	12
hospital care	116
inpatient care	116
minimally invasive procedures	12
neck surgery	19
open surgery	12
pelvic imaging	71
ultrasound (sonogram)	600
vascular procedures	748

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	403
Female	463

**Ethnicity**
Non-Hispanic White	735
Black	24
Hispanic	90
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	313
From 75 to 84	327
85 and over	125
Less than 65	101

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	13
Ischemic Heart Disease	59
Depression	27
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	36
Chronic Obstructive Pulmonary Disease	25
Diabetes	36
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2014 were vascular procedures, ultrasound (sonogram), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	130
catheterization	30
doctor visit	509
endarterectomy	23
hospital care	108
inpatient care	108
minimally invasive procedures	21
neck surgery	23
pelvic imaging	130
ultrasound (sonogram)	712
vascular procedures	917

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	452
Female	524

**Ethnicity**
Non-Hispanic White	821
Black	32
Hispanic	104
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	330
From 75 to 84	377
85 and over	141
Less than 65	128

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2014

Hypertension	75
High Cholesterol	67
Stroke	13
Ischemic Heart Disease	62
Depression	30
Chronic Kidney Disease	46
Asthma	8
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	36
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	15
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2015 were vascular procedures, ultrasound (sonogram), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	117
doctor visit	517
endarterectomy	22
hospital care	110
inpatient care	110
neck surgery	22
pelvic imaging	117
ultrasound (sonogram)	785
vascular procedures	959

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	990
Female	1100

**Ethnicity**
Non-Hispanic White	1750
Black	78
Hispanic	226
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	748
From 75 to 84	788
85 and over	312
Less than 65	242

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2015

Hypertension	75
High Cholesterol	68
Stroke	17
Ischemic Heart Disease	60
Depression	27
Chronic Kidney Disease	45
Asthma	19
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	38
Chronic Obstructive Pulmonary Disease	28
Diabetes	42
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2016 were vascular procedures, ultrasound (sonogram), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	167
doctor visit	550
endarterectomy	23
hospital care	130
inpatient care	130
minimally invasive procedures	12
neck surgery	23
pelvic imaging	167
ultrasound (sonogram)	1001
vascular procedures	1225

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	588
Female	630

**Ethnicity**
Non-Hispanic White	1030
Black	41
Hispanic	126
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	464
From 75 to 84	417
85 and over	191
Less than 65	146

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2016

Hypertension	75
High Cholesterol	67
Stroke	13
Ischemic Heart Disease	59
Depression	22
Chronic Kidney Disease	50
Asthma	30
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	34
Chronic Obstructive Pulmonary Disease	29
Diabetes	38
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2017 were vascular procedures, ultrasound (sonogram), pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	104
doctor visit	561
endarterectomy	25
hospital care	90
inpatient care	90
minimally invasive procedures	16
neck surgery	25
pelvic imaging	104
ultrasound (sonogram)	657
vascular procedures	848

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	467
Female	466

**Ethnicity**
Non-Hispanic White	791
Black	28
Hispanic	100
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	380
From 75 to 84	313
85 and over	125
Less than 65	115

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2017

Hypertension	75
High Cholesterol	67
Stroke	14
Ischemic Heart Disease	59
Depression	24
Chronic Kidney Disease	49
Asthma	7
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	34
Chronic Obstructive Pulmonary Disease	31
Diabetes	40
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2018 were vascular procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	107
doctor visit	566
hospital care	266
inpatient care	266
pelvic imaging	107
ultrasound (sonogram)	664
vascular procedures	790

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	487
Female	494

**Ethnicity**
Non-Hispanic White	819
Black	33
Hispanic	109
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	362
From 75 to 84	364
85 and over	149
Less than 65	106

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2018

Hypertension	75
High Cholesterol	70
Stroke	16
Ischemic Heart Disease	60
Depression	24
Chronic Kidney Disease	49
Asthma	8
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	38
Chronic Obstructive Pulmonary Disease	28
Diabetes	36
Dementia	16
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2019 were vascular procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	73
anastomosis	15
catheterization	16
dialysis access procedures	29
doctor visit	581
endarterectomy	16
hospital care	191
inpatient care	191
neck surgery	16
pelvic imaging	73
ultrasound (sonogram)	593
vascular procedures	767

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	480
Female	484

**Ethnicity**
Non-Hispanic White	773
Black	44
Hispanic	133
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	347
From 75 to 84	358
85 and over	137
Less than 65	122

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2019

Hypertension	75
High Cholesterol	70
Stroke	16
Ischemic Heart Disease	62
Depression	26
Chronic Kidney Disease	51
Asthma	9
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	40
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2020 were vascular procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	77
doctor visit	423
endarterectomy	16
hospital care	182
inpatient care	182
neck surgery	16
pelvic imaging	77
ultrasound (sonogram)	497
vascular procedures	640

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	399
Female	381

**Ethnicity**
Non-Hispanic White	643
Black	28
Hispanic	95
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	303
85 and over	122
Less than 65	75

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	17
Ischemic Heart Disease	64
Depression	25
Chronic Kidney Disease	56
Asthma	8
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	39
Chronic Obstructive Pulmonary Disease	25
Diabetes	40
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2021 were vascular procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	70
anastomosis	28
dialysis access procedures	28
doctor visit	520
endarterectomy	12
hospital care	186
inpatient care	186
neck surgery	12
pelvic imaging	70
ultrasound (sonogram)	543
vascular procedures	732

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	456
Female	416

**Ethnicity**
Non-Hispanic White	722
Black	26
Hispanic	104
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	341
From 75 to 84	321
85 and over	125
Less than 65	85

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2021

Hypertension	75
High Cholesterol	72
Stroke	17
Ischemic Heart Disease	61
Depression	25
Chronic Kidney Disease	54
Asthma	8
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	35
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	17
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX during 2022 were vascular procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

abdominal imaging	47
anastomosis	19
catheterization	11
device removal	13
dialysis access procedures	19
doctor visit	472
hospital care	104
inpatient care	104
pelvic imaging	47
ultrasound (sonogram)	537
vascular procedures	684

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	444
Female	372

**Ethnicity**
Non-Hispanic White	673
Black	31
Hispanic	88
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	310
From 75 to 84	315
85 and over	103
Less than 65	88

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	50
Depression	25
Chronic Kidney Disease	42
Asthma	12
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	32
Chronic Obstructive Pulmonary Disease	29
Diabetes	42
Dementia	11
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Chance Loomis Irwin, MD for Medicare patients.

The highest averages for the top procedures that Dr. Chance Loomis Irwin, MD treated as a vascular surgeon in Amarillo, TX were vascular procedures, ultrasound (sonogram), inpatient care and hospital care.

abdominal imaging	102
abdominal surgery	16
anastomosis	20
angioplasty	29
catheterization	17
device removal	13
dialysis access procedures	25
doctor visit	509
endarterectomy	19
gastrointestinal procedures	16
hospital care	147
inpatient care	147
minimally invasive procedures	18
neck surgery	19
open surgery	16
pelvic imaging	102
ultrasound (sonogram)	690
vascular procedures	871

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Chance Loomis Irwin, MD.

**Gender**
Male	469
Female	484

**Ethnicity**
Black / African American	33
Asian / Pacific Islander	0
Non-Hispanic White	796
Native American / Alaskan Native	0
Hispanic	106
Other	1

**Age**
75 to 84	353
85 and over	139
Less than 65	109
65 to 74	352

Average of Total of Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD From 2012 - 2022

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

Hypertension	68
High Cholesterol	62
Stroke	14
Ischemic Heart Disease	54
Depression	23
Chronic Kidney Disease	43
Asthma	10
Osteoporosis	8
Heart Failure	32
Chronic Obstructive Pulmonary Disease	25
Diabetes	36
Atrial Fibrillation	14
Dementia	13
Cancer	11

Education & Training

Dr. Chance Loomis Irwin, MD graduated from Texas A & M Health Science Center College of Medicine in 2002. He is certified by the American Board of Surgery and has a state license in Texas.

Medical School: Texas A & M Health Science Center College of Medicine (2002)

Board Certification: American Board of Surgery

Licensed In: Texas

Affiliations & Hospitals

Dr. Chance Loomis Irwin, MD is associated with these hospitals and organizations:

Amarillo Surgical Group

Ratings & Reviews

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General Payments

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

**Payments by Company**
Endologix, Inc.	$4,534 AFX $2,630	OVATION $229	$1,675
W. L. Gore & Associates, Inc.	$3,036 C3 Delivery System $1,143	EXCLUDER Iliac Branch Endoprosthesis $654	Conformable TAG Thoracic Endoprosthesis $448	Dryseal Flex Sheath $352	GORE TAG Thoracic Endoprosthesis $247	Other $193
Intuitive Surgical, Inc.	$2,818 Da Vinci Surgical System $2,818
Globus Medical, Inc.	$1,878 MONUMENT $1,351	INDEPENDENCE $283	Spine $140	ELSA $89	L5-S1 $15
GE Healthcare	$1,813 $1,813
Other	$4,779 Artis pheno $900	XARELTO $326	ENROUTE 0.014 Guidewire $272	Supera peripheral stent system $249	ECM Patch $178	Other $2,854

**Types of Payments**
Food and Beverage	$11,560
Travel and Lodging	$6,738
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$500
Education	$38
Honoraria	$11
Other	$9

Biography

Dr. Chance Irwin works as a vascular surgery. He graduated from the University of Texas Medical School at Houston and Texas A & M Health Science Center College of Medicine. He has received the following distinctions: Texas Super Doctors and Texas Rising Stars. Dr. Irwin is not accepting new patients at this time according to Doctor.com.

Select Year:

Dr. Chance Loomis Irwin, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Chance Loomis Irwin, MD in 2023

By Affordability:

By Affordability:

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. Chance Loomis Irwin, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Chance Loomis Irwin, 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. Chance Loomis Irwin, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Amarillo, TX