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Dr. Ragnar S. Peterson, MD

(156 Ratings)

Specializes in: General Surgery

University of Kansas School of Medicine

2500 Canterbury Drive Suite 202
Hays, KS 67601

(785) 623-5945

Dr. Ragnar S. Peterson, MD is a general surgeon in Wichita, KS specializing in general surgery. He graduated from University of Kansas School of Medicine. Dr. Ragnar S. Peterson, MD is affiliated with Wesley Healthcare, Wesley Medical Center, Ascension, Ascension Via Christi St. Joseph, Ascension Via Christi St. Francis and Ascension Via Christi St. Teresa.

Office Locations

1947 Founders Circle
Wichita, KS 67206

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818 N Emporia Street Suite 200
Wichita, KS 67214

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2500 Canterbury Drive Suite 202
Hays, KS 67601

(785) 623-5945

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Noteworthy Medicare Patient Procedures Performed by Dr. Ragnar S. Peterson, MD in 2023

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

Top 5%

By Volume:

flap reconstruction

pedicled muscle flap reconstruction

In 2023, Dr. Ragnar S. Peterson, MD performed more flap reconstruction, and pedicled muscle flap reconstruction procedures for Medicare patients than 95% of providers in related specialties within Kansas.

Top 25%

By Volume:

hernia surgery

inpatient hospital care

laparoscopic inguinal hernia repair

In 2012, Dr. Ragnar S. Peterson, MD performed more hernia surgery, inpatient hospital care (for patient admitted to hospital), and laparoscopic inguinal hernia repair procedures for Medicare patients than 75% of providers in related specialties within Kansas.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2012 were hospital care, inpatient care and catheterization.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

catheterization	12
doctor visit	85
hospital care	118
inpatient care	118

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

doctor visit	105
hospital care	102
inpatient care	102

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	59
Female	79

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	45
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2013

Hypertension	75
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	37
Depression	25
Chronic Kidney Disease	44
Asthma	14
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	21
Diabetes	38
Dementia	14
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

doctor visit	68
hospital care	74
inpatient care	74

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	59
Female	51

**Age**
From 65 to 74	37
From 75 to 84	26
85 and over	17
Less than 65	30

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2014

Hypertension	66
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	44
Depression	32
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	29
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

doctor visit	122
hospital care	75
inpatient care	75

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	168
Female	114

**Age**
From 65 to 74	148
From 75 to 84	50
85 and over	26
Less than 65	58

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2015

Hypertension	75
High Cholesterol	70
Stroke	11
Ischemic Heart Disease	48
Depression	31
Chronic Kidney Disease	36
Asthma	17
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	31
Chronic Obstructive Pulmonary Disease	13
Diabetes	41
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

doctor visit	60
hospital care	18
inpatient care	18

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	43
Female	48

**Ethnicity**
Non-Hispanic White	71
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	20
85 and over	15
Less than 65	23

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2016

Hypertension	73
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	31
Depression	34
Chronic Kidney Disease	34
Asthma	22
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	12
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2017 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	17
doctor visit	127
gastrointestinal procedures	17
hospital care	67
inpatient care	67
minimally invasive procedures	17

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	96
Female	78

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	53
85 and over	17
Less than 65	24

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2017

Hypertension	71
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	48
Asthma	6
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	22
Chronic Obstructive Pulmonary Disease	25
Diabetes	37
Dementia	10
Cancer	21

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2018 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	16
doctor visit	172
gastrointestinal procedures	16
hospital care	97
inpatient care	97
minimally invasive procedures	16

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	92
Female	105

**Ethnicity**
Non-Hispanic White	175
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	48
85 and over	18
Less than 65	42

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2018

Hypertension	73
High Cholesterol	59
Stroke	6
Ischemic Heart Disease	36
Depression	29
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	26
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2019 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	22
doctor visit	183
gastrointestinal procedures	38
hospital care	100
inpatient care	100
minimally invasive procedures	38
plastic surgery procedures	23
preventive care	16
reconstructive surgery	23
tissue transfer	23

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	118
Female	114

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	122
From 75 to 84	50
85 and over	22
Less than 65	38

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2019

Hypertension	75
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	38
Depression	32
Chronic Kidney Disease	40
Asthma	6
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	22
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2020 were minimally invasive procedures, gastrointestinal procedures, reconstructive surgery and plastic surgery procedures.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	18
diagnostic procedures	15
doctor visit	182
gastrointestinal procedures	33
hospital care	15
inpatient care	15
minimally invasive procedures	33
plastic surgery procedures	32
reconstructive surgery	32
removal of lesion (e.g. growth)	15
tissue transfer	32

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	99
Female	94

**Ethnicity**
Non-Hispanic White	173
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	42
85 and over	16
Less than 65	27

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2020

Hypertension	67
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	37
Asthma	7
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	20
Chronic Obstructive Pulmonary Disease	15
Diabetes	34
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	28
diagnostic procedures	37
doctor visit	175
gastrointestinal procedures	80
hospital care	52
inpatient care	52
minimally invasive procedures	80
preventive care	15
removal of lesion (e.g. growth)	37

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	129
Female	103

**Ethnicity**
Non-Hispanic White	210
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	60
85 and over	27
Less than 65	24

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2021

Hypertension	75
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	38
Depression	26
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	19
Chronic Obstructive Pulmonary Disease	14
Diabetes	34
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS during 2022 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

abdominal surgery	27
diagnostic procedures	11
doctor visit	185
gastrointestinal procedures	50
hospital care	73
inpatient care	73
minimally invasive procedures	50
preventive care	12
removal of lesion (e.g. growth)	11

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	127
Female	129

**Ethnicity**
Non-Hispanic White	233
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	69
85 and over	32
Less than 65	30

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2022

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	30
Asthma	11
Osteoperosis	16
Atrial Fibrilation	21
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Ragnar S. Peterson, MD for Medicare patients.

The highest averages for the top procedures that Dr. Ragnar S. Peterson, MD treated as a general surgeon in Wichita, KS were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

abdominal surgery	21
catheterization	12
diagnostic procedures	21
doctor visit	133
gastrointestinal procedures	39
hospital care	71
inpatient care	71
minimally invasive procedures	39
plastic surgery procedures	27
preventive care	14
reconstructive surgery	27
removal of lesion (e.g. growth)	21
tissue transfer	27

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Ragnar S. Peterson, MD.

**Gender**
Male	90
Female	83

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	121
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
75 to 84	42
85 and over	17
Less than 65	26
65 to 74	82

Average of Total of Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD From 2012 - 2022

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

Hypertension	65
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	33
Asthma	9
Osteoporosis	6
Heart Failure	20
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Atrial Fibrillation	13
Dementia	5
Cancer	13

Education & Training

Dr. Ragnar S. Peterson, MD graduated from University of Kansas School of Medicine. He completed residency at University of Kansas Medical Center. He is certified by the The American Board of Surgery - Surgery and has a state license in Wisconsin.

Medical School: University of Kansas School of Medicine

Residency: University of Kansas Medical Center

Board Certification: The American Board of Surgery - Surgery

Licensed In: Wisconsin

Affiliations & Hospitals

Dr. Ragnar S. Peterson, MD is associated with these hospitals and organizations:

Wesley Healthcare

Wesley Medical Center

Ascension

Ascension Via Christi St. Joseph

Ascension Via Christi St. Francis

Ascension Via Christi St. Teresa

Ratings & Reviews

Dr. Ragnar S. Peterson, MD has an exceptional overall rating with an average of 4.8 out of 5 stars based on 156 ratings. We collect ratings and reviews of Dr. Ragnar S. Peterson, MD from all over the web to help you find the right in Wichita, KS.

4.8

Overall Rating

(156 Ratings)

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General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$4,985 Da Vinci Surgical System $4,985
Allergan Inc.	$1,099 AlloDerm $607	STRATTICE $492
LIFECELL CORPORATION	$1,044 STRATTICE $959	AlloDerm $85
Davol Inc.	$806 SURGICAL $806
Ethicon US, LLC	$57 Energy Harmonic $36	Endoscopy Endocutters $20	Advanced Wound care $1
Other	$216 PriMatrix $40	Perjeta $39	AirSeal $34	Synthetic Mesh $32	SURGICAL $22	Other $48

**Types of Payments**
Travel and Lodging	$4,879
Food and Beverage	$1,827
Education	$1,500

Biography

Dr. Ragnar Peterson is a specialist in general surgery. Patients gave Dr. Peterson an average rating of 5.0 stars (out of 5). After attending the University of Kansas School of Medicine, he completed his residency training at the University of Kansas Medical Center. He is professionally affiliated with Ascension, Wichita Surgical Specialists, and Wesley Medical Center.

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Dr. Ragnar S. Peterson, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Ragnar S. Peterson, MD in 2023

By Volume:

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. Ragnar S. Peterson, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Ragnar S. Peterson, 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. Ragnar S. Peterson, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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