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Dr. Kevin J. Peifer, MD

Accepting New Patients

(381 Ratings)

Specializes in: Adult Gastroenterology

University of Toledo College of Medicine (1999)

Professional interests include: gastrointestinal problems (digestive disorders)

401 Roxbury Road
Rockford, IL 61107

(815) 397-7340

Dr. Kevin J. Peifer, MD is a gastroenterologist in Rockford, IL specializing in adult gastroenterology. He graduated from University of Toledo College of Medicine in 1999 and has 27 years of experience. Dr. Kevin J. Peifer, MD is affiliated with OSF Healthcare and Rockford Gastroenterology Associates.

Office Locations

401 Roxbury Road
Rockford, IL 61107

(815) 397-7340

(815) 397-2156

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Some issues Dr. Kevin J. Peifer, MD can help you with:

Gastrointestinal Problems (Digestive Disorders)

The gastrointestinal system, or GI tract, is the name given to a collection of organs that work together to digest food. These organs fit together in a long tube, running from the mouth to the anus, and include the esophagus, stomach, and intestines, among others. With so many parts working together, complicated by today's busy lifestyles and diets, digestive problems are common. As many as 1 in 3 Americans have a digestive or GI disorder. There are a huge variety of digestive problems, but the most common are IBS, constipation, GERD, hemorrhoids, and ulcers.

IBS, or irritable bowel syndrome, happens when the muscles surrounding the colon contract too easily or frequently. The result is abdominal pain, cramps, diarrhea or constipation, gas and bloating. IBS attacks can often be brought on by specific triggers, so a key part of treatment is learning which foods trigger IBS attacks and avoiding them. Treatment also includes exercise, avoiding stress, and medications if needed.

Constipation, or large, hard, or infrequent stools, happens to everyone at some point. It can be caused by a disruption in routine or food, or by eating a diet without many fresh fruits and vegetables. Although it is uncomfortable, constipation is common and usually not serious, but it can sometimes become chronic. Adding fiber to the diet, exercising, and taking medications may help.

GERD, or gastroesophageal reflux disease, is a severe form of chronic heartburn where stomach acid spills back up into the esophagus. Left untreated, the acid may even eat away at the esophagus and cause serious damage. Treatment includes changing the diet to avoid trigger foods, losing weight if needed, medications, or even surgery.

Hemorrhoids are blood vessels around the rectum that become irritated, swollen or torn while straining during a bowel movement. They are most often caused by constipation, but can also be caused by pregnancy, diarrhea, or simply a genetic predisposition towards hemorrhoids. Treatment involves first treating any constipation issues, then keeping the area clean and soothed until it has healed. If these measures are ineffective, surgery is sometimes used.

Peptic ulcers are sores or spots of inflammation in the lining of the stomach or close to the stomach in the small intestine. Usually this area is coated with a protective lining that shields the tissue from the strong stomach acid, but a break in the lining can let acid in, causing the sores. It used to be thought that stress caused ulcers, but now it is known that is not the case. Most often, they are caused by an infection by H. pylori bacteria, but ulcers can also be caused by alcohol abuse or overuse of aspirin, ibuprofen, naproxen, or other NSAIDS. The symptoms of an ulcer are pain, hunger, nausea, and fatigue.

Gastrointestinal problems, perhaps more than any other area, are markedly affected by lifestyle. Many disorders can be prevented or treated at least in part by eating a healthy diet high in fiber, exercising regularly, drinking enough water, and limiting alcohol intake. Still, the frequency of digestive disorders means that even the healthiest person can be affected by them. Anyone who notices blood in their stool, experiences abdominal pain, unexplained weight loss, or any significant change in bowel movements should see a doctor.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2012 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

anastomosis	11
catheterization	11
diagnostic procedures	221
doctor visit	238
esophageal dilation	18
gastrointestinal procedures	388
hospital care	314
inpatient care	314
minimally invasive procedures	388
preventive care	68
removal of lesion (e.g. growth)	221
ultrasound (sonogram)	17

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2013 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

anastomosis	11
catheterization	11
diagnostic procedures	261
doctor visit	283
esophageal dilation	11
gastrointestinal procedures	386
hospital care	260
inpatient care	260
minimally invasive procedures	386
preventive care	38
removal of lesion (e.g. growth)	261
ultrasound (sonogram)	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	272
Female	352

**Ethnicity**
Non-Hispanic White	536
Black	59
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	158
85 and over	60
Less than 65	133

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2013

Hypertension	72
High Cholesterol	56
Stroke	7
Ischemic Heart Disease	38
Depression	28
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	29
Chronic Obstructive Pulmonary Disease	24
Diabetes	38
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2014 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	12
diagnostic procedures	226
doctor visit	157
gastrointestinal procedures	393
hospital care	275
image guided procedures	12
inpatient care	275
minimally invasive procedures	393
minor procedures	12
preventive care	59
removal of lesion (e.g. growth)	226
stent placement (stenting)	11
ultrasound (sonogram)	48

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	270
Female	302

**Ethnicity**
Non-Hispanic White	494
Black	52
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	148
85 and over	51
Less than 65	117

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2014

Hypertension	73
High Cholesterol	57
Stroke	7
Ischemic Heart Disease	36
Depression	32
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	28
Chronic Obstructive Pulmonary Disease	23
Diabetes	38
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2015 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	11
diagnostic procedures	209
doctor visit	151
esophageal dilation	16
gastrointestinal procedures	337
hospital care	349
image guided procedures	11
inpatient care	349
minimally invasive procedures	337
minor procedures	11
preventive care	58
removal of lesion (e.g. growth)	193
ultrasound (sonogram)	39

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	568
Female	588

**Ethnicity**
Non-Hispanic White	976
Black	108
Hispanic	42
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	452
From 75 to 84	312
85 and over	142
Less than 65	250

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2015

Hypertension	75
High Cholesterol	59
Stroke	9
Ischemic Heart Disease	44
Depression	31
Chronic Kidney Disease	43
Asthma	21
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	36
Chronic Obstructive Pulmonary Disease	28
Diabetes	40
Dementia	15
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	16
diagnostic procedures	182
doctor visit	128
gastrointestinal procedures	311
hospital care	265
image guided procedures	16
inpatient care	265
minimally invasive procedures	323
minor procedures	16
preventive care	58
removal of lesion (e.g. growth)	182
stent placement (stenting)	13
ultrasound (sonogram)	50

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	238
Female	299

**Ethnicity**
Non-Hispanic White	464
Black	45
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	227
From 75 to 84	148
85 and over	54
Less than 65	108

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2016

Hypertension	75
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	40
Depression	30
Chronic Kidney Disease	45
Asthma	30
Osteoperosis	10
Atrial Fibrilation	20
Heart Failure	31
Chronic Obstructive Pulmonary Disease	26
Diabetes	39
Dementia	12
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2017 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

anastomosis	11
catheterization	11
diagnostic procedures	221
doctor visit	144
esophageal dilation	18
gastrointestinal procedures	391
hospital care	343
inpatient care	343
minimally invasive procedures	402
preventive care	71
removal of lesion (e.g. growth)	221
stent placement (stenting)	11
ultrasound (sonogram)	23

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	277
Female	330

**Ethnicity**
Non-Hispanic White	542
Black	33
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	251
From 75 to 84	163
85 and over	68
Less than 65	125

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2017

Hypertension	75
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	41
Depression	33
Chronic Kidney Disease	49
Asthma	9
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	30
Chronic Obstructive Pulmonary Disease	25
Diabetes	40
Dementia	15
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

diagnostic procedures	192
doctor visit	147
gastrointestinal procedures	292
hospital care	182
inpatient care	182
minimally invasive procedures	306
preventive care	52
removal of lesion (e.g. growth)	192
ultrasound (sonogram)	25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	228
Female	247

**Ethnicity**
Non-Hispanic White	419
Black	24
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	128
85 and over	34
Less than 65	71

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2018

Hypertension	73
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	40
Depression	27
Chronic Kidney Disease	42
Asthma	7
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	21
Diabetes	34
Dementia	11
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and hospital care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	16
diagnostic procedures	197
doctor visit	164
gastrointestinal procedures	287
hospital care	197
image guided procedures	16
inpatient care	197
minimally invasive procedures	299
minor procedures	16
removal of lesion (e.g. growth)	197
ultrasound (sonogram)	50

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	229
Female	272

**Ethnicity**
Non-Hispanic White	422
Black	29
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	221
From 75 to 84	152
85 and over	48
Less than 65	80

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2019

Hypertension	72
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	35
Depression	29
Chronic Kidney Disease	48
Asthma	8
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	32
Chronic Obstructive Pulmonary Disease	20
Diabetes	37
Dementia	13
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2020 were minimally invasive procedures, gastrointestinal procedures, inpatient care and hospital care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	18
biological response modifier (BRM) therapy	13
chemotherapy	13
diagnostic procedures	198
doctor visit	265
gastrointestinal procedures	285
hospital care	203
image guided procedures	18
inpatient care	203
minimally invasive procedures	309
minor procedures	18
preventive care	11
removal of lesion (e.g. growth)	198
stent placement (stenting)	11
ultrasound (sonogram)	35

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	220
Female	260

**Ethnicity**
Non-Hispanic White	421
Black	20
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	227
From 75 to 84	138
85 and over	41
Less than 65	74

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2020

Hypertension	71
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	38
Depression	29
Chronic Kidney Disease	49
Asthma	11
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	29
Chronic Obstructive Pulmonary Disease	23
Diabetes	40
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

diagnostic procedures	167
doctor visit	239
gastrointestinal procedures	271
hospital care	230
inpatient care	230
minimally invasive procedures	271
preventive care	13
removal of lesion (e.g. growth)	167
ultrasound (sonogram)	36

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	235
Female	243

**Ethnicity**
Non-Hispanic White	413
Black	25
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	142
85 and over	61
Less than 65	66

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2021

Hypertension	74
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	40
Depression	31
Chronic Kidney Disease	51
Asthma	8
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	31
Chronic Obstructive Pulmonary Disease	25
Diabetes	40
Dementia	12
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

aspiration	11
diagnostic procedures	167
doctor visit	122
gastrointestinal procedures	265
hospital care	141
image guided procedures	11
inpatient care	141
minimally invasive procedures	265
minor procedures	11
removal of lesion (e.g. growth)	167
stent placement (stenting)	16
ultrasound (sonogram)	32

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	178
Female	240

**Ethnicity**
Non-Hispanic White	353
Black	23
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	119
85 and over	49
Less than 65	55

Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD in 2022

Hypertension	75
High Cholesterol	73
Stroke	8
Ischemic Heart Disease	29
Depression	26
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	24
Chronic Obstructive Pulmonary Disease	23
Diabetes	39
Dementia	7
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Kevin J. Peifer, MD for Medicare patients.

The highest averages for the top procedures that Dr. Kevin J. Peifer, MD treated as a gastroenterologist in Rockford, IL were minimally invasive procedures, gastrointestinal procedures, inpatient care and hospital care.

anastomosis	11
aspiration	14
biological response modifier (BRM) therapy	13
catheterization	11
chemotherapy	13
diagnostic procedures	203
doctor visit	185
esophageal dilation	15
gastrointestinal procedures	327
hospital care	250
image guided procedures	14
inpatient care	250
minimally invasive procedures	334
minor procedures	14
preventive care	47
removal of lesion (e.g. growth)	202
stent placement (stenting)	12
ultrasound (sonogram)	33

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Kevin J. Peifer, MD.

**Gender**
Male	246
Female	284

**Ethnicity**
Black / African American	38
Asian / Pacific Islander	0
Non-Hispanic White	458
Native American / Alaskan Native	0
Hispanic	16
Other	0

**Age**
75 to 84	146
85 and over	55
Less than 65	98
65 to 74	232

Average of Total of Conditions of Medicare patients treated by Dr. Kevin J. Peifer, MD From 2012 - 2022

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

Hypertension	66
High Cholesterol	56
Stroke	6
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	39
Asthma	11
Osteoporosis	8
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Atrial Fibrillation	15
Dementia	10
Cancer	13

Education & Training

Dr. Kevin J. Peifer, MD graduated from University of Toledo College of Medicine in 1999. He completed residency at Barnes-Jewish Hospital. He is certified by the Gastroenterology and maintains a special interest in liver, pancreas and biliary tract disease, as well as in EUS, ERCP and EMR and has a state license in Illinois.

Medical School: University of Toledo College of Medicine (1999)

Residency: Barnes-Jewish Hospital (2002)

Board Certification: Gastroenterology and maintains a special interest in liver, pancreas and biliary tract disease, as well as in EUS, ERCP and EMR

Licensed In: Illinois

Affiliations & Hospitals

Dr. Kevin J. Peifer, MD is associated with these hospitals and organizations:

OSF Healthcare

Rockford Gastroenterology Associates

Ratings & Reviews

Dr. Kevin J. Peifer, MD has an exceptional overall rating with an average of 4.91 out of 5 stars based on 381 ratings. We collect ratings and reviews of Dr. Kevin J. Peifer, MD from all over the web to help you find the right in Rockford, IL.

4.91

Overall Rating

(381 Ratings)

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General Payments

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

**Payments by Company**
AbbVie, Inc.	$287 Lupron $164	Viekira $87	Creon $21	$14
Boston Scientific Corporation	$186 Biliary Devices $186
Covidien LP	$99 Bravo $99
Gilead Sciences Inc	$85 $85
AbbVie Inc.	$80 Rinvoq $80
Other	$272 ESD - Core Endoscopy $79	VIBERZI $62	OLYSIO $52	FUJIFILM $28	GI Solutions $27	Other $24

**Types of Payments**
Food and Beverage	$851
Gift	$79
Education	$52
Long term medical supply or device loan	$28

Biography

Dr. Kevin Peifer is a physician who specializes in adult gastroenterology. Dr. Peifer's clinical interests include gastrointestinal problems (digestive disorders). Patient reviews placed him at an average of 5.0 stars (out of 5). He attended the University of Toledo College of Medicine for medical school and subsequently trained at Barnes-Jewish Hospital for residency. Dr. Peifer is professionally affiliated with OSF Healthcare. His practice in is open to new patients as reported by OSF Healthcare.