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Dr. Rockford Glenn Yapp, MD, MPH

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Specializes in: Adult Gastroenterology

University of Nebraska College of Medicine (1984)

Professional interests include: Helicobacter pylori (H. pylori) infection, autoimmune diseases, gastrointestinal bleeding, and more.

3825 Highland Avenue #302
Downers Grove, IL 60515

(630) 434-9312

Dr. Rockford Glenn Yapp, MD, MPH is a gastroenterologist in Downers Grove, IL specializing in adult gastroenterology. He graduated from University of Nebraska College of Medicine in 1984 and has 40 years of experience. Dr. Rockford Glenn Yapp, MD, MPH is affiliated with Advocate Health Care, Advocate Illinois Masonic Medical Center, AdventHealth, Advocate Good Samaritan Hospital, GI PARTNERS OF ILLINOIS LLC and AHP SPECIALTY CARE NFP.

Office Locations

Address:

3825 Highland Avenue #302
Downers Grove, IL 60515

Address:

500 Remington Boulevard Suite 2100
Bolingbrook, IL 60440

Some issues Dr. Rockford Glenn Yapp, MD, MPH can help you with:

Autoimmune Diseases

An autoimmune disorder happens when the immune system mistakenly attacks the tissues of its own body, causing symptoms of illness. There are more than 80 different types of autoimmune disorders. While some are very rare, others are fairly common. Combined, autoimmune disorders are one of the leading causes of death and disability in the United States, affecting approximately 24 million people.

A properly working immune system identifies foreign substances in the body that might cause illness, such as bacteria and viruses. The immune system then creates antibodies which attack the foreign substances, neutralizing them and keeping the body safe. In people with autoimmune disorders, something goes wrong with this process. For reasons that are not fully understand, the immune system creates antibodies to attack the patient's own tissues.

Symptoms of an autoimmune disorder depend on which tissue is being attacked by the immune system, but common symptoms of autoimmune disease include fever, fatigue, and a general feeling of just not being well. Autoimmune disorders are more common in women than in men, and they may run in families. Autoimmune disorders can affect various parts of the body such as blood vessels, connective tissue, endocrine glands, joints, muscles, red blood cells, skin, and many others.

It is common to have more than one autoimmune disorder at a time. Most are chronic, or life-long illnesses, although they may come and go in flares. Treatment for autoimmune disorders depends on which part of the body is being attacked. For example:

A type 1 diabetic whose pancreas has been damaged will need insulin.
A person with Hashimoto's whose thyroid has been damaged will need replacement thyroid hormones.
Someone with Sjogren's syndrome will need eye drops and mouth rinses to replace tears and saliva.

Many autoimmune disorders of all kinds are treated with immune-suppressing medications, such as corticosteroids (e.g. prednisone) to reduce the effect of the immune system.

Colonoscopy

Colonoscopy is the use of a special tool called a colonoscope (a thin, flexible tube with a camera on the end) to examine the inside of the colon and rectum. The tube is typically inserted anally, and it allows the physician to examine the large intestine from the inside. It may be done at any time to diagnose bowel problems, but routine colonoscopies are advised after the age of 50 to screen for colon cancer.

A colonoscopy may be performed to diagnose:

Intestinal ulcers
Polyps
Bowel cancer
An unidentified source of pain or bleeding in the intestine

Patients may be asked to drink only liquids in the days before a colonoscopy, or they may be given an enema to remove residual fecal matter. Before the exam, patients are given medication to help them relax, and then lay on their side on a table. The scope is inserted into the anus and gently moved all the way through the large intestine. Air may be pumped into the intestine to improve the view for the physician. Any polyps that are found will be removed. Then the colonoscope will be withdrawn. A colonoscopy is not usually painful, but patients may feel some bloating or have some cramps right afterward. If patients have polyps removed, they might experience a small amount of bleeding. Any side effects should go away within a few hours.

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.

balloon dilation	23
diagnostic procedures	277
doctor visit	796
esophageal dilation	21
gastrointestinal procedures	407
hospital care	297
inpatient care	297
minimally invasive procedures	407
preventive care	113
removal of lesion (e.g. growth)	276

**Gender**
Male	262
Female	387

**Ethnicity**
Non-Hispanic White	582
Black	21
Hispanic	0
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	305
From 75 to 84	190
85 and over	90
Less than 65	64

Hypertension	64
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	39
Depression	20
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	12
Cancer	15

balloon dilation	19
diagnostic procedures	217
doctor visit	766
esophageal dilation	17
gastrointestinal procedures	351
hospital care	145
inpatient care	145
minimally invasive procedures	351
preventive care	95
removal of lesion (e.g. growth)	216
stent placement (stenting)	13

**Gender**
Male	210
Female	330

**Ethnicity**
Non-Hispanic White	490
Black	12
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	284
From 75 to 84	150
85 and over	60
Less than 65	46

Hypertension	67
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	39
Depression	20
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	31
Dementia	10
Cancer	13

diagnostic procedures	236
doctor visit	717
esophageal dilation	16
gastrointestinal procedures	296
hospital care	202
inpatient care	202
minimally invasive procedures	296
preventive care	67
removal of lesion (e.g. growth)	235

**Gender**
Male	458
Female	652

**Ethnicity**
Non-Hispanic White	984
Black	38
Hispanic	30
Asian	36
Other	22
Native American	0

**Age**
From 65 to 74	518
From 75 to 84	324
85 and over	164
Less than 65	104

Hypertension	70
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	38
Depression	22
Chronic Kidney Disease	29
Asthma	15
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	18
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	11
Cancer	14

diagnostic procedures	214
doctor visit	681
esophageal dilation	13
gastrointestinal procedures	298
hospital care	206
inpatient care	206
minimally invasive procedures	298
preventive care	79
removal of lesion (e.g. growth)	225

**Gender**
Male	247
Female	333

**Ethnicity**
Non-Hispanic White	515
Black	26
Hispanic	13
Asian	14
Other	12
Native American	0

**Age**
From 65 to 74	287
From 75 to 84	159
85 and over	83
Less than 65	51

Hypertension	71
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	37
Depression	23
Chronic Kidney Disease	35
Asthma	19
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	14
Cancer	14

anastomosis	13
catheterization	13
diagnostic procedures	248
doctor visit	669
esophageal dilation	19
gastrointestinal procedures	373
hospital care	258
inpatient care	258
liver imaging	14
minimally invasive procedures	373
preventive care	71
removal of lesion (e.g. growth)	259
stent placement (stenting)	17
ultrasound (sonogram)	14

**Gender**
Male	243
Female	345

**Ethnicity**
Non-Hispanic White	525
Black	25
Hispanic	0
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	283
From 75 to 84	182
85 and over	80
Less than 65	43

Hypertension	70
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	40
Depression	22
Chronic Kidney Disease	37
Asthma	7
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	14
Cancer	15

balloon dilation	11
diagnostic procedures	276
doctor visit	649
esophageal dilation	9
gastrointestinal procedures	374
hospital care	371
inpatient care	371
minimally invasive procedures	374
preventive care	93
removal of lesion (e.g. growth)	275

**Gender**
Male	275
Female	372

**Ethnicity**
Non-Hispanic White	567
Black	21
Hispanic	13
Asian	25
Other	21
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	224
85 and over	86
Less than 65	47

Hypertension	72
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	39
Depression	25
Chronic Kidney Disease	40
Asthma	8
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	25
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	15
Cancer	16

diagnostic procedures	243
doctor visit	625
esophageal dilation	19
gastrointestinal procedures	377
hospital care	339
inpatient care	339
minimally invasive procedures	377
preventive care	89
removal of lesion (e.g. growth)	242
stent placement (stenting)	14

**Gender**
Male	273
Female	339

**Ethnicity**
Non-Hispanic White	526
Black	29
Hispanic	14
Asian	19
Other	24
Native American	0

**Age**
From 65 to 74	296
From 75 to 84	191
85 and over	69
Less than 65	56

Hypertension	68
High Cholesterol	67
Stroke	7
Ischemic Heart Disease	40
Depression	26
Chronic Kidney Disease	40
Asthma	8
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	16
Cancer	13

balloon dilation	13
diagnostic procedures	246
doctor visit	460
esophageal dilation	11
gastrointestinal procedures	328
hospital care	291
inpatient care	291
minimally invasive procedures	328
preventive care	48
removal of lesion (e.g. growth)	245
stent placement (stenting)	12

**Gender**
Male	248
Female	293

**Ethnicity**
Non-Hispanic White	475
Black	17
Hispanic	15
Asian	22
Other	12
Native American	0

**Age**
From 65 to 74	268
From 75 to 84	163
85 and over	77
Less than 65	33

Hypertension	69
High Cholesterol	68
Stroke	6
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	40
Asthma	7
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	30
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	15
Cancer	17

anastomosis	29
balloon dilation	51
catheterization	29
diagnostic procedures	588
doctor visit	1076
esophageal dilation	62
gastrointestinal procedures	862
hospital care	1052
inpatient care	1052
minimally invasive procedures	862
preventive care	130
removal of lesion (e.g. growth)	587
stent placement (stenting)	15

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Rockford Glenn Yapp, MD, MPH for Medicare patients.

The highest averages for the top procedures that Dr. Rockford Glenn Yapp, MD, MPH treated as a gastroenterologist in Downers Grove, IL were gastrointestinal procedures, minimally invasive procedures, inpatient care and hospital care.

anastomosis	21
balloon dilation	23
catheterization	21
diagnostic procedures	283
doctor visit	716
esophageal dilation	22
gastrointestinal procedures	413
hospital care	351
inpatient care	351
liver imaging	14
minimally invasive procedures	413
preventive care	87
removal of lesion (e.g. growth)	286
stent placement (stenting)	14
ultrasound (sonogram)	14

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Rockford Glenn Yapp, MD, MPH.

**Gender**
Male	221
Female	305

**Ethnicity**
Black / African American	18
Asian / Pacific Islander	17
Non-Hispanic White	466
Native American / Alaskan Native	0
Hispanic	8
Other	9

**Age**
75 to 84	158
85 and over	70
Less than 65	44
65 to 74	253

Average of Total of Conditions of Medicare patients treated by Dr. Rockford Glenn Yapp, MD, MPH From 2013 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Rockford Glenn Yapp, MD, MPH treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	55
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	31
Depression	18
Chronic Kidney Disease	27
Asthma	8
Osteoporosis	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Atrial Fibrillation	13
Cancer	11
Dementia	10

Education & Training

Dr. Rockford Glenn Yapp, MD, MPH graduated from University of Nebraska College of Medicine in 1984. He completed residency at Northwestern University Affiliated Hospitals. He is certified by the Gastroenterology: The American Board of Internal Medicine and has a state license in Illinois.

Medical School: University of Nebraska College of Medicine (1984)

Residency: Northwestern University Affiliated Hospitals

Board Certification: Gastroenterology: The American Board of Internal Medicine

Licensed In: Illinois

Affiliations & Hospitals

Dr. Rockford Glenn Yapp, MD, MPH is associated with these hospitals and organizations:

Advocate Health Care

Advocate Illinois Masonic Medical Center

AdventHealth

Advocate Good Samaritan Hospital

GI PARTNERS OF ILLINOIS LLC

AHP SPECIALTY CARE NFP

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Rockford Glenn Yapp, MD, MPH appears to accept the following insurance providers: MultiPlan, CIGNA Choice Fund PPO, United Healthcare Select Plus POS, United Healthcare PPO, United Healthcare POS, Humana HMO Premier, United Healthcare Options PPO, United Healthcare Indemnity, United Healthcare HMO, Humana POS, United Healthcare Choice Plus POS, Humana National POS - Open Access, Humana Platinum HMO, Humana HMO, Unicare PPO, Blue Choice, Aetna POS, Aetna QPOS, TRICARE Prime, Aetna Open Choice PPO, Aetna Open Access HMO, Golden Rule, Great-West Healthcare, TRICARE, Community Care Network (CCN), Coventry, Aetna Open Access Aetna Select, Aetna Select, Aetna Choice POS, Cigna Connect, Aetna EPO, Humana National HMO, Humana National EPO, Aetna PPO, Aetna HMO, Humana ChoiceCare PPO, Blue Advantage PPO, CIGNA PPO, CIGNA POS, CIGNA HMO, Aetna Medicare PPO, Aetna Choice POS II, United Healthcare Choice Plus PPO, AARP, Medicare Advantage, Blue Cross Blue Shield HMO, Blue Cross PPO, Blue Advantage HMO, Blue Cross Medicare Advantage PPO, Coventry PPO, Blue Cross Blue Shield PPO, United Healthcare, Medicaid, Humana, Cigna, United Healthcare Navigate HMO, First Health, Beech Street, HealthLink PPO, HealthLink, Humana EPO, HFN EPO, HFN PPO, HFN Platinum EPO, Humana PPO, HFN, Aetna, Cigna-HealthSpring, PHCS PPO, MultiPlan PPO, Private Healthcare Systems (PHCS), SEIU - Local 4 PPO, Union Medical (Local 1546) HMO, IL-ACTIN, Union Medical Care PPO, AAH UMR Select - Team Member Plan, IL-Ascension Health Medicare, HST Care Connect EPO, IL-Medicare, United Surest (previously Bind), Blue Cross HMO Illinois, Union Health Services, Inc., IL-Smart Health, Ambetter, Blue Precision HMO, Health Alliance Employee EPO, AAH UMR Preferred - Team Member Plan, SEIU - Local 4 HMO, IL-Adventist Health Network, Meridian, HST Care Connect PPO, IL-Blue Cross/Blue Shield Community ICP, Blue Cross Community MMAI, BlueCare Direct HMO and Blue Cross Medicare Supplement PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Rockford Glenn Yapp, MD, MPH accepts the following insurance providers:

MultiPlan

CIGNA Choice Fund PPO

United Healthcare Select Plus POS

United Healthcare PPO

United Healthcare POS

Humana HMO Premier

United Healthcare Options PPO

United Healthcare Indemnity

United Healthcare HMO

Humana POS

United Healthcare Choice Plus POS

Humana National POS - Open Access

Humana Platinum HMO

Humana HMO

Unicare PPO

Blue Choice

Aetna POS

Aetna QPOS

TRICARE Prime

Aetna Open Choice PPO

Aetna Open Access HMO

Golden Rule

Great-West Healthcare

TRICARE

Community Care Network (CCN)

Coventry

Aetna Open Access Aetna Select

Aetna Select

Aetna Choice POS

Cigna Connect

Aetna EPO

Humana National HMO

Humana National EPO

Aetna PPO

Aetna HMO

Humana ChoiceCare PPO

Blue Advantage PPO

CIGNA PPO

CIGNA POS

CIGNA HMO

Aetna Medicare PPO

Aetna Choice POS II

United Healthcare Choice Plus PPO

AARP

Medicare Advantage

Blue Cross Blue Shield HMO

Blue Cross PPO

Blue Advantage HMO

Blue Cross Medicare Advantage PPO

Coventry PPO

Blue Cross Blue Shield PPO

United Healthcare

Medicaid

Humana

Cigna

United Healthcare Navigate HMO

First Health

Beech Street

HealthLink PPO

HealthLink

Humana EPO

HFN EPO

HFN PPO

HFN Platinum EPO

Humana PPO

HFN

Aetna

Cigna-HealthSpring

PHCS PPO

MultiPlan PPO

Private Healthcare Systems (PHCS)

SEIU - Local 4 PPO

Union Medical (Local 1546) HMO

IL-ACTIN

Union Medical Care PPO

AAH UMR Select - Team Member Plan

IL-Ascension Health Medicare

HST Care Connect EPO

IL-Medicare

United Surest (previously Bind)

Blue Cross HMO Illinois

Union Health Services, Inc.

IL-Smart Health

Ambetter

Blue Precision HMO

Health Alliance Employee EPO

AAH UMR Preferred - Team Member Plan

SEIU - Local 4 HMO

IL-Adventist Health Network

Meridian

HST Care Connect PPO

IL-Blue Cross/Blue Shield Community ICP

Blue Cross Community MMAI

BlueCare Direct HMO

Blue Cross Medicare Supplement PPO

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General Payments

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

**Payments by Company**
Gilead Sciences Inc	$107,376 Harvoni $36,701	Epclusa $24,310	Sovaldi $12,626	Vosevi $4,169	Viread $2,539	Other $27,031
AbbVie, Inc.	$81,024 Mavyret $53,592	Humira $968	Creon $589	Viekira $568	Lupron $269	Other $25,038
Gilead Sciences, Inc.	$62,830 Epclusa $39,299	$23,531
Allergan Inc.	$48,976 VIBERZI $46,828	LINZESS $2,000	$147
AbbVie Inc.	$34,356 Mavyret $22,521	Rinvoq $1,009	Humira $608	LINZESS $278	Skyrizi $246	Other $9,695
Other	$134,838 Cimzia $23,481	XIFAXAN $19,861	DAKLINZA $11,686	LINZESS $11,664	COLOGUARD $6,858	Other $61,287

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$308,284
Consulting Fee	$56,598
Food and Beverage	$45,948
Travel and Lodging	$40,090
Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program	$9,500
Other	$8,979

Research Payments

Dr. Rockford Glenn Yapp, MD, MPH has received 36 research payments totaling $211,227.

Biography

Dr. Rockford Yapp practices adult gastroenterology in Downers Grove, IL and Bolingbrook, IL. In his practice, he is particularly interested in pain, hepatitis, and vascular disease. Dr. Yapp usually honors Blue California, HFN, and Cigna Connect, in addition to other insurance carriers. He studied medicine at the University of Nebraska College of Medicine. For his residency, Dr. Yapp trained at a hospital affiliated with Northwestern University. He is affiliated with AdventHealth. His practice in Bolingbrook, IL is open to new patients as reported by AdventHealth.