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Dr. Clarissa Grace Barnes, MD

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Specializes in: Internal Medicine (Adult Medicine)

1104 W 8th Street
Yankton, SD 57078

(605) 665-7841

Dr. Clarissa Grace Barnes, MD is an internist in Yankton, SD specializing in internal medicine (adult medicine).

Office Locations

1104 W 8th Street
Yankton, SD 57078

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In The News

“Dr. Clarissa Barnes, an internal medicine physician at Avera Health in Sioux Falls, said the hardest thing for her has been witnessing so much grief from families who lose loved ones to Covid-19.”—"US coronavirus cases soar to new daily high of more than 185,000", CNN, November 2020

“SIOUX FALLS, S.D. (AP) - For Dr. Clarissa Barnes, COVID-19 has taken an already stressful job to new heights.”—"Yankton native helps heal the healers", The Washington Times, May 2020

Noteworthy Medicare Patient Procedures Performed by Dr. Clarissa Grace Barnes, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Clarissa Grace Barnes, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within South Dakota.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2012 were lab tests, preventive care, blood draw and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

blood draw	268
breast exam	19
breast procedures	28
diabetes management	61
doctor visit	583
gynecologic procedures	19
hospital care	134
inpatient care	134
lab tests	751
preventive care	310
thoracic (chest) imaging	27
thyroid function tests	86
vaccines	121
women's imaging	28
X-rays	55

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2013 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

abdominal imaging	19
blood draw	481
breast exam	52
breast procedures	105
CT scan	19
diabetes management	147
doctor visit	833
gynecologic procedures	52
hospital care	157
inpatient care	157
lab tests	1450
musculoskeletal imaging	35
pelvic imaging	19
preventive care	633
thoracic (chest) imaging	35
thyroid function tests	196
vaccines	137
women's imaging	105
X-rays	175

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	178
Female	393

**Ethnicity**
Non-Hispanic White	551
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	214
From 75 to 84	173
85 and over	115
Less than 65	69

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2013

Hypertension	57
High Cholesterol	39
Stroke	3
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2014 were lab tests, blood draw, preventive care and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

blood draw	270
breast exam	17
breast procedures	43
diabetes management	97
doctor visit	657
gynecologic procedures	17
hospital care	165
inpatient care	165
lab tests	789
preventive care	263
spinal procedures	12
thoracic (chest) imaging	33
thyroid function tests	84
women's imaging	43
X-rays	88

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	153
Female	392

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

**Age**
From 65 to 74	208
From 75 to 84	142
85 and over	119
Less than 65	76

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2014

Hypertension	61
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	27
Depression	21
Chronic Kidney Disease	23
Asthma	11
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2015 were X-rays, musculoskeletal imaging and preventive care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

doctor visit	718
musculoskeletal imaging	37
preventive care	11
X-rays	37

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	150
Female	494

**Ethnicity**
Non-Hispanic White	602
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	170
85 and over	104
Less than 65	80

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2015

Hypertension	48
High Cholesterol	31
Stroke	0
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	16
Asthma	11
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2016 were hospital care, inpatient care, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

doctor visit	996
hospital care	118
inpatient care	99
musculoskeletal imaging	47
nursing home care	24
outpatient care	19
preventive care	23
X-rays	47

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	120
Female	357

**Ethnicity**
Non-Hispanic White	438
Black	0
Hispanic	0
Asian	0
Other	0
Native American	28

**Age**
From 65 to 74	203
From 75 to 84	130
85 and over	76
Less than 65	68

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2016

Hypertension	60
High Cholesterol	36
Stroke	2
Ischemic Heart Disease	25
Depression	29
Chronic Kidney Disease	26
Asthma	18
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	19
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2017 were X-rays, musculoskeletal imaging, hospital care and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

doctor visit	928
hospital care	15
inpatient care	15
musculoskeletal imaging	19
preventive care	13
X-rays	19

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	110
Female	338

**Ethnicity**
Non-Hispanic White	403
Black	0
Hispanic	0
Asian	0
Other	0
Native American	32

**Age**
From 65 to 74	223
From 75 to 84	104
85 and over	64
Less than 65	57

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2017

Hypertension	58
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	22
Depression	25
Chronic Kidney Disease	28
Asthma	4
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

doctor visit	609
hospital care	348
inpatient care	317
outpatient care	31

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	168
Female	368

**Ethnicity**
Non-Hispanic White	483
Black	0
Hispanic	0
Asian	0
Other	0
Native American	33

**Age**
From 65 to 74	226
From 75 to 84	156
85 and over	95
Less than 65	59

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2018

Hypertension	72
High Cholesterol	54
Stroke	7
Ischemic Heart Disease	31
Depression	30
Chronic Kidney Disease	40
Asthma	6
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	29
Chronic Obstructive Pulmonary Disease	22
Diabetes	37
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

hospital care	605
inpatient care	576
outpatient care	29

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	169
Female	181

**Ethnicity**
Non-Hispanic White	318
Black	0
Hispanic	0
Asian	0
Other	0
Native American	16

**Age**
From 65 to 74	127
From 75 to 84	110
85 and over	69
Less than 65	44

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	15
Ischemic Heart Disease	51
Depression	40
Chronic Kidney Disease	63
Asthma	11
Osteoperosis	16
Atrial Fibrilation	27
Heart Failure	52
Chronic Obstructive Pulmonary Disease	43
Diabetes	43
Dementia	26
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

hospital care	452
inpatient care	452

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	131
Female	153

**Ethnicity**
Non-Hispanic White	254
Black	0
Hispanic	0
Asian	0
Other	0
Native American	16

**Age**
From 65 to 74	110
From 75 to 84	88
85 and over	39
Less than 65	47

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	13
Ischemic Heart Disease	52
Depression	41
Chronic Kidney Disease	70
Asthma	10
Osteoperosis	10
Atrial Fibrilation	26
Heart Failure	47
Chronic Obstructive Pulmonary Disease	36
Diabetes	45
Dementia	26
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

hospital care	317
inpatient care	317

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	140
Female	171

**Ethnicity**
Non-Hispanic White	284
Black	0
Hispanic	0
Asian	0
Other	0
Native American	15

**Age**
From 65 to 74	128
From 75 to 84	83
85 and over	46
Less than 65	54

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2021

Hypertension	75
High Cholesterol	68
Stroke	14
Ischemic Heart Disease	43
Depression	43
Chronic Kidney Disease	62
Asthma	10
Osteoperosis	15
Atrial Fibrilation	23
Heart Failure	40
Chronic Obstructive Pulmonary Disease	32
Diabetes	46
Dementia	23
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

hospital care	311
inpatient care	311

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	83
Female	92

**Ethnicity**
Non-Hispanic White	163
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	56
85 and over	38
Less than 65	26

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	41
Depression	41
Chronic Kidney Disease	47
Asthma	10
Osteoperosis	23
Atrial Fibrilation	33
Heart Failure	42
Chronic Obstructive Pulmonary Disease	31
Diabetes	47
Dementia	15
Cancer	24

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Clarissa Grace Barnes, MD for Medicare patients.

The highest averages for the top procedures that Dr. Clarissa Grace Barnes, MD treated as an internist in Yankton, SD were lab tests, blood draw, hospital care and inpatient care.

abdominal imaging	19
blood draw	339
breast exam	29
breast procedures	58
CT scan	19
diabetes management	101
doctor visit	760
gynecologic procedures	29
hospital care	262
inpatient care	254
lab tests	996
musculoskeletal imaging	34
nursing home care	24
outpatient care	26
pelvic imaging	19
preventive care	208
spinal procedures	12
thoracic (chest) imaging	31
thyroid function tests	122
vaccines	129
women's imaging	58
X-rays	70

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Clarissa Grace Barnes, MD.

**Gender**
Male	127
Female	267

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	364
Native American / Alaskan Native	12
Hispanic	0
Other	0

**Age**
75 to 84	110
85 and over	69
Less than 65	52
65 to 74	162

Average of Total of Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD From 2012 - 2022

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

Hypertension	59
High Cholesterol	47
Stroke	6
Ischemic Heart Disease	31
Depression	27
Chronic Kidney Disease	35
Asthma	8
Osteoporosis	10
Heart Failure	27
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Atrial Fibrillation	16
Dementia	13
Cancer	13

Education & Training

She has a state license in South Dakota.

Licensed In: South Dakota

Ratings & Reviews

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General Payments

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

**Payments by Company**
Janssen Pharmaceuticals, Inc	$219 INVOKANA $148	XARELTO $71
Amgen Inc.	$161 Repatha $128	Prolia $33
Lilly USA, LLC	$159 TRULICITY $95	HUMALOG $40	JARDIANCE $24
Pfizer Inc.	$107 ELIQUIS $72	EUCRISA $18	PREVNAR - 13 $10	VIAGRA $8
AstraZeneca Pharmaceuticals LP	$72 FARXIGA $41	BYDUREON PEN $20	CRESTOR $11
Other	$364 LINZESS $45	ELIQUIS $39	Trintellix $33	PRALUENT $31	CAMZYOS $28	Other $188

**Types of Payments**
Food and Beverage	$1,074
Education	$8

Select Year:

Dr. Clarissa Grace Barnes, MD

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Clarissa Grace Barnes, MD in 2023

By Volume:

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. Clarissa Grace Barnes, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Clarissa Grace Barnes, 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. Clarissa Grace Barnes, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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