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Dr. Rita Joanne Herzing, MD

Accepting New Patients

Specializes in: Internal Medicine (Adult Medicine)

Loyola University Chicago, Stritch School of Medicine (2006)

Professional interests include: gastrointestinal problems (digestive disorders), hypertension (high blood pressure), coronary artery disease, and more.

430 PENNSYLVANIA AVENUE
GLEN ELLYN, IL 60137

(630) 469-9200

Dr. Rita Joanne Herzing, MD is an internist in GLEN ELLYN, IL specializing in internal medicine (adult medicine). She graduated from Loyola University Chicago, Stritch School of Medicine in 2006 and has 20 years of experience. Dr. Rita Joanne Herzing, MD is affiliated with Endeavor Health, Northwestern Medicine and Duly Health and Care.

Office Locations

430 PENNSYLVANIA AVENUE
GLEN ELLYN, IL 60137

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150 E Willow Suite 200
Wheaton, IL 60187

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Some issues Dr. Rita Joanne Herzing, MD can help you with:

Coronary Artery Disease

Coronary artery disease (CAD) is the most common type of heart disease. It happens when the blood vessels carrying blood to the heart, called coronary arteries, narrow and harden. This occurs when cholesterol, a type of fat found in the blood, builds up to form plaque, which sticks to the inner walls of the arteries. As plaque accumulates, less blood can flow through the arteries, which may lead to the following:

Angina, which is chest pain that occurs when the heart does not receive enough blood flow.
Heart attack, which happens if the arteries leading to the heart are completely blocked.
Arrhythmia, or irregular heartbeat, which can develop if the heart does not have enough blood supply.
Heart failure, which may occur if a heart attack damages the heart and it becomes too weak to pump enough blood to the rest of the body.

Certain factors may increase risk for the disease, like smoking, lack of exercise, being overweight, high cholesterol, high blood pressure, and diabetes. CAD tends to develop over decades, so it can go undetected until it has become quite severe. A diagnosis may be established using such tests as:

Electrocardiogram (ECG), which records the heart's electrical activity over a period of time. ECGs can detect whether there is enough blood flow to the heart or if a heart attack has occurred.
Echocardiogram (echo), which creates images of the heart using sound waves. Echos can show whether the heart is able to pump blood normally.
Stress tests, where an ECG or echo is combined with exercise, like riding a stationary bike or walking on a treadmill. This test is done to find out if the heart can function properly while performing a strenuous activity.

Treatments for the disease include medications such as vasodilators, like nitroglycerin, which dilates (widens) the coronary arteries. CAD may also be treated by a procedure called angioplasty with stent placement, where a balloon is inflated inside a diseased artery to flatten the plaque deposits against the artery walls, creating more room for blood to flow.

In some severe cases of the disease, multiple arteries may be blocked, and an open heart surgery called coronary artery bypass surgery may be necessary. This operation transplants a vessel from another part of the body to form a graft that goes past the narrowed arteries, thus enabling blood to flow around those arteries.

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.

Noteworthy Medicare Patient Procedures Performed by Dr. Rita Joanne Herzing, MD in 2024

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

Top 5%

By Volume:

blood draw

lab tests

phlebotomy for lab tests

preventive care

total insulin test

By Affordability:

insulin blood test

insulin test

total insulin test

In 2024, among providers in related specialties within Illinois, Dr. Rita Joanne Herzing, MD performed more blood draw, lab tests, phlebotomy for lab tests, preventive care, and total insulin test procedures for Medicare patients than 95% of them and she also had a list price for insulin blood test, insulin test, and total insulin test that was lower than the list prices billed to Medicare by 95% 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.

Top 10%

By Volume:

A1C test

lipid profile

By Affordability:

12-lead EKG

brain natriuretic peptide test

In 2024, among providers in related specialties within Illinois, Dr. Rita Joanne Herzing, MD performed more A1C test, and lipid profile procedures for Medicare patients than 90% of them and she also had a list price for 12-lead (standard) EKG, brain natriuretic peptide (BNP) test, cardiac procedures, electrocardiogram (EKG), folic acid tests, screening EKG, serum folate test, total PSA test, and vitamin B12 test that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

creatinine urine test

electrocardiogram

flu shot

microalbumin urine test

thyroid blood test

Welcome to Medicare visit

By Affordability:

albumin test

ALT test

antinuclear antibody test

blood count tests

cholesterol screening

complete blood count

C-reactive protein testing

creatinine test

creatinine urine test

immunoglobulin tests

iron tests

kidney function tests

microalbumin urine test

phlebotomy for lab tests

In 2012, among providers in related specialties within Illinois, Dr. Rita Joanne Herzing, MD performed more creatinine urine test, electrocardiogram (EKG), flu shot, microalbumin urine test, thyroid blood test, and Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 75% of them and she also had a list price for albumin test, ALT (SGPT) test, antinuclear antibody (ANA) test, blood count tests, cholesterol screening, complete blood count (CBC), C-reactive protein testing, creatinine test, creatinine urine test, immunoglobulin tests, iron tests, kidney function tests, lipid profile, magnesium test, metabolic panel, microalbumin test, microalbumin urine test, phlebotomy for lab tests, sed rate (ESR), uric acid blood test, uric acid test, urinalysis, and vitamin D test 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. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2012 were lab tests, preventive care, vaccines and cardiac procedures.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

cardiac procedures	12
doctor visit	567
lab tests	131
preventive care	43
vaccines	18

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2013 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	401
doctor visit	750
lab tests	128
preventive care	30
vaccines	30

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	61
Female	239

**Ethnicity**
Non-Hispanic White	252
Black	0
Hispanic	22
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	74
85 and over	43
Less than 65	36

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2013

Hypertension	65
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	21
Depression	26
Chronic Kidney Disease	14
Asthma	9
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2014 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	440
cardiac procedures	15
doctor visit	701
lab tests	199
preventive care	96
vaccines	61

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	104
Female	312

**Ethnicity**
Non-Hispanic White	350
Black	0
Hispanic	26
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	113
85 and over	59
Less than 65	38

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2014

Hypertension	65
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	27
Depression	24
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	7
Atrial Fibrilation	26
Heart Failure	18
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2015 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	443
diabetes management	83
doctor visit	607
lab tests	1126
preventive care	257
thyroid function tests	82
vaccines	39

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	256
Female	602

**Ethnicity**
Non-Hispanic White	756
Black	24
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	388
From 75 to 84	270
85 and over	132
Less than 65	68

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2015

Hypertension	66
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	28
Depression	20
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	7
Atrial Fibrilation	32
Heart Failure	21
Chronic Obstructive Pulmonary Disease	10
Diabetes	29
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2016 were lab tests, blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	360
diabetes management	77
doctor visit	397
lab tests	888
preventive care	349
thyroid function tests	96
vaccines	110

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	91
Female	265

**Ethnicity**
Non-Hispanic White	322
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	101
85 and over	55
Less than 65	21

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2016

Hypertension	58
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	26
Depression	16
Chronic Kidney Disease	22
Asthma	13
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2017 were lab tests, preventive care, blood draw and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	530
cardiac procedures	13
diabetes management	146
doctor visit	554
lab tests	1428
preventive care	618
thyroid function tests	163
vaccines	192

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	133
Female	336

**Ethnicity**
Non-Hispanic White	417
Black	0
Hispanic	19
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	127
85 and over	57
Less than 65	29

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2017

Hypertension	61
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	7
Atrial Fibrilation	23
Heart Failure	17
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2018 were lab tests, preventive care, blood draw and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	537
diabetes management	136
doctor visit	697
lab tests	1404
preventive care	601
thyroid function tests	148
vaccines	231

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	141
Female	350

**Ethnicity**
Non-Hispanic White	437
Black	0
Hispanic	17
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	274
From 75 to 84	140
85 and over	56
Less than 65	21

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2018

Hypertension	60
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	24
Depression	18
Chronic Kidney Disease	21
Asthma	3
Osteoperosis	5
Atrial Fibrilation	21
Heart Failure	15
Chronic Obstructive Pulmonary Disease	6
Diabetes	25
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2019 were lab tests, preventive care, blood draw and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	533
diabetes management	118
doctor visit	699
lab tests	1515
preventive care	570
thyroid function tests	146
vaccines	176

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	135
Female	346

**Ethnicity**
Non-Hispanic White	432
Black	13
Hispanic	0
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	275
From 75 to 84	144
85 and over	41
Less than 65	21

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2019

Hypertension	55
High Cholesterol	54
Stroke	3
Ischemic Heart Disease	24
Depression	21
Chronic Kidney Disease	23
Asthma	3
Osteoperosis	8
Atrial Fibrilation	21
Heart Failure	17
Chronic Obstructive Pulmonary Disease	5
Diabetes	22
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2020 were lab tests, preventive care, blood draw and vaccines.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	544
diabetes management	129
doctor visit	696
lab tests	1444
preventive care	581
thyroid function tests	150
vaccines	168

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	120
Female	380

**Ethnicity**
Non-Hispanic White	448
Black	0
Hispanic	13
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	305
From 75 to 84	131
85 and over	43
Less than 65	21

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2020

Hypertension	55
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	21
Depression	24
Chronic Kidney Disease	22
Asthma	3
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	16
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2021 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	720
diabetes management	150
doctor visit	981
lab tests	1882
preventive care	660
thyroid function tests	180
vaccines	120

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	139
Female	416

**Ethnicity**
Non-Hispanic White	497
Black	0
Hispanic	17
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	330
From 75 to 84	153
85 and over	53
Less than 65	19

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2021

Hypertension	57
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	27
Depression	23
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	6
Diabetes	24
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2022 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	720
diabetes management	158
doctor visit	935
lab tests	2128
preventive care	537
thyroid function tests	191
vaccines	11

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	139
Female	388

**Ethnicity**
Non-Hispanic White	476
Black	0
Hispanic	12
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	304
From 75 to 84	158
85 and over	48
Less than 65	17

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2022

Hypertension	67
High Cholesterol	71
Stroke	5
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	14
Asthma	7
Osteoperosis	16
Atrial Fibrilation	18
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	4
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2023 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	724
diabetes management	162
doctor visit	973
lab tests	1954
preventive care	567
thyroid function tests	188

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	93
Female	402

**Ethnicity**
Non-Hispanic White	434
Black	0
Hispanic	14
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	294
From 75 to 84	153
85 and over	37
Less than 65	11

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2023

Hypertension	63
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	18
Depression	23
Chronic Kidney Disease	15
Asthma	7
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	21
Dementia	3
Cancer	13

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL during 2024 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

blood draw	844
cardiac procedures	21
diabetes management	188
doctor visit	1087
lab tests	2410
preventive care	739
thyroid function tests	222
vaccines	61

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Male	87
Female	404

**Ethnicity**
Non-Hispanic White	443
Black	0
Hispanic	14
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	295
From 75 to 84	150
85 and over	34
Less than 65	12

Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD in 2024

Hypertension	64
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	18
Depression	22
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	19
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	20
Dementia	2
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Rita Joanne Herzing, MD for Medicare patients.

The highest averages for the top procedures that Dr. Rita Joanne Herzing, MD treated as an internist in GLEN ELLYN, IL were lab tests, blood draw, preventive care and thyroid function tests.

blood draw	566
cardiac procedures	15
diabetes management	134
doctor visit	741
lab tests	1279
preventive care	434
thyroid function tests	156
vaccines	101

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Rita Joanne Herzing, MD.

**Gender**
Female	341
Male	115

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	2
Non-Hispanic White	404
Native American / Alaskan Native	0
Hispanic	15
Other	12

**Age**
75 to 84	131
85 and over	50
Less than 65	24
65 to 74	250

Average of Total of Conditions of Medicare patients treated by Dr. Rita Joanne Herzing, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Rita Joanne Herzing, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	56
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	21
Depression	19
Chronic Kidney Disease	17
Asthma	6
Osteoporosis	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Atrial Fibrillation	17
Dementia	5
Cancer	9

Education & Training

Dr. Rita Joanne Herzing, MD graduated from Loyola University Chicago, Stritch School of Medicine in 2006. She completed residency at Loyola University Affiliated Hospitals. She is certified by the American Board of Internal Medicine - Internal Medicine (Certified) and has a state license in Illinois.

Medical School: Loyola University Chicago, Stritch School of Medicine (2006)

Residency: Loyola University Affiliated Hospitals

Board Certification: American Board of Internal Medicine - Internal Medicine (Certified)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Rita Joanne Herzing, MD is associated with these hospitals and organizations:

Endeavor Health

Northwestern Medicine

Duly Health and Care

Ratings & Reviews

Dr. Rita Joanne Herzing, MD has an exceptional overall rating with an average of 4.91 out of 5 stars based on 1065 ratings. We collect ratings and reviews of Dr. Rita Joanne Herzing, MD from all over the web to help you find the right in GLEN ELLYN, IL.

4.91

Overall Rating

(1065 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2017-12-12

So happy to have finally found a PCP that I am confident in. She truly listens to you and your concerns and she provides logical and easy to understand feedback. She doesn't rush you out the door, is very personable and has a great bedside manner. Highly recommend!

Reviews From Around The Web

Overall Rating: 5.0 2025-07-11

Patient verified via Press Ganey

Dr. Herzing has been my primary doctor for over 13 years now! After seeing her one time, she made such an impression on me that I switched to her! She has never let me down. Dr. Herzing is an exemplary physician! Not only is she kind and compassionate, but she is also truly dedicated to her work and her patients. She is genuinely interested and curious about finding the cause & solution for every ailment. I always feel that my opinions and concerns are not only respected, but also truly heard and considered. Dr. Herzing is very approachable and relatable, and she makes me feel like a valued patient. She also has a wonderful sense of humor and explains everything very casually! My body is overly sensitive and complicated, and it is difficult every time I need to visit a new specialty. But with Dr. Herzing, I know she will consider ME and my body, and will prescribe the best treatment for ME, not just the standard treatment. I am so very thankful and grateful that Dr. Herzing is my doctor! She is truly THE BEST!

Overall Rating: 5.0 2025-12-21

Patient verified via Press Ganey

Rita is amazing! Not only do I have confidence in her ability to diagnose and assist me with my health, but she never makes me feel embarrassed or awkward! And I'm also personally delighted by her efficiency and that she asks good questions but doesn't waste my time )

Overall Rating: 5.0 2025-07-02

Patient verified via Press Ganey

Dr. Herzing is an excellent Dr. I always rely on her expertise. She's very easy to talk to and always gives expert advice. I would definitely recommend her.

Overall Rating: 5.0 2025-08-22

Patient verified via Press Ganey

Dr Herzing spent quite a bit of time with me and answered all my questions. She was very thorough and gave me advice as to what to do following my surgery.

Overall Rating: 5.0 2025-08-15

Patient verified via Press Ganey

As always, Dr Herzing was extremely helpful in evaluating my health needs. I am very grateful and happy to have her as my internist.

Overall Rating: 5.0 2025-08-16

Patient verified via Press Ganey

It is always a good experience because Dr. Herzing is very sharp and always has a "game plan". The "plan" always includes me.

Overall Rating: 5.0 2026-02-14

Patient verified via Press Ganey

Dr. Herzing thoroughly and patiently answered all of my questions even though I was the last patient of the day on a Friday.

Overall Rating: 5.0 2026-03-24

Patient verified via Press Ganey

Dr. Herzing always listens attentively to my concerns and responds in an compassionate, appropriate and professional manner

Overall Rating: 5.0 2026-03-07

Patient verified via Press Ganey

Very good, showed understanding and respect. Answered questions gave advice. I actually felt empathy and respect.

To see all 1065 reviews for Dr. Rita Joanne Herzing, MD, view their full profile.

General Payments

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

**Payments by Company**
AbbVie Inc.	$111 VRAYLAR $111
Exact Sciences Corporation	$95 Cologuard Collection Kit $95

**Types of Payments**
Food and Beverage	$207

Biography

Dr. Rita Herzing's areas of expertise include the following: diabetes, gastrointestinal problems (digestive disorders), and hypertension (high blood pressure). Patients gave Dr. Herzing an average rating of 5.0 stars (out of 5). She studied medicine at Loyola University Chicago, Stritch School of Medicine. She completed her residency training at a hospital affiliated with Loyola University. Her professional affiliations include Northwestern Medicine Central DuPage Hospital, Edward Hospital, and Duly Health and Care. Dr. Herzing has an open panel in GLEN ELLYN, IL according to Doctor.com.