Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > IL Providers > Internists & Internal Medicine Doctors

Dr. Thomas Edwin Klarquist, MD

(4 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

Michigan State University College of Human Medicine (1987)

Professional interests include: anxiety, cholesterol problems (lipid disorders), obesity, and more.

3000 N Halsted Street
Chicago, IL 60657

(773) 296-5090

Dr. Thomas Edwin Klarquist, MD is an internist in Chicago, IL specializing in internal medicine (adult medicine). He graduated from Michigan State University College of Human Medicine in 1987 and has 38 years of experience. Dr. Thomas Edwin Klarquist, MD is affiliated with Advocate Health Care and Advocate Illinois Masonic Medical Center.

Office Locations

Address:

3000 N Halsted Street
Chicago, IL 60657

Address:

3134 North Clark Street
Chicago, IL 60657

Some issues Dr. Thomas Edwin Klarquist, MD can help you with:

Anxiety

Anxiety is a generic name given to a variety of conditions characterized by unusual amounts of fear and worry, especially unrealistic fears and tension. People who suffer from anxiety often are aware that their fears are irrational, but that knowledge does not make the feeling of being scared and anxious go away. To qualify as anxiety, symptoms must last for 6 months or more and interfere with the way a person lives their daily life. Some cases may be mild, where, for example, a person simply avoids certain situations. Other cases can be severe enough to be disabling.

Some of the specific conditions covered under the general label of anxiety include:

Generalized anxiety disorder
Obsessive-compulsive disorder
Phobias
Post-traumatic stress disorder
Social phobia
Panic disorder

Collectively, anxiety disorders are the most common mental health issues diagnosed in the United States -- even more common than depression. Women are more likely than men to be diagnosed with anxiety, and it is extremely common for a person with anxiety to have another illness at the same time, such as depression, a physical illness, or substance abuse.

Treatment for anxiety usually involves medication and psychotherapy together. Medications used may include antidepressants (which also work for anxiety), anti-anxiety medications, or beta blockers (which can be used to control the physical symptoms of anxiety). Psychotherapy can be useful to teach patients new ways of thinking and reacting so that they can manage their feelings of worry and fear. Support groups can also be very effective for anxiety, and they can be a form of treatment themselves for social phobias. Stress management, relaxation techniques, and meditation all help reduce feelings of anxiety or of being out of control. Finally, having a strong support network of family and friends is an excellent way to help manage the difficulties of life with anxiety.

Depression

Everyone knows what it feels like to get the blues once in a while. But depression is a serious illness that is more severe than a bad day and lasts much longer. Symptoms of depression stop a person from being able to function and enjoy daily activities for weeks or months at a time. It can happen to anyone, and it isn't something that people can control by force of will or "snap out of it."

Some common symptoms of depression include:

Feeling sad, guilty, empty or hopeless
Fatigue and a lack of energy and motivation
A loss of pleasure in activities that were previously enjoyed
Unusual sleep or eating habits
Mental fog -- trouble concentrating, remembering, or making decisions
Physical aches and pains
Suicidal thoughts or a preoccupation with death

We don't yet know what causes depression, but it's thought that it is a combination of genetic, biological, environmental, and social influences. Because of this, the most effective treatments for depression combine medication with psychotherapy. Therapy, especially cognitive-behavioral therapy, can be extremely helpful in resolving the negative thoughts and feelings that come with depression. It gives patients new tools that they can use themselves to cope when their depression is making them feel down.

Some of the common medications used to treat depression include antidepressants such as SSRI's (Prozac, Paxil, Zoloft) or atypical antidepressants (Cymbalta, Wellbutrin). It's important to remember that these medications have different effects on everybody, and no one medication works right for everyone. Patients may have to try a couple before finding the one that works just right for them. If the first medication they try doesn't work, they should talk to their doctor about trying something else. In extreme cases where medication is not enough, electro-convulsive therapy and hospitalization may be the answer to keeping a severely depressed person safe.

Depression is a difficult illness to deal with, but it is more common than believed and there are many people who can help. With the right treatment, individuals with depression can get back to fully enjoying life again.

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.

doctor visit	208
preventive care	12
vaccines	13

**Gender**
Male	93
Female	42

**Ethnicity**
Non-Hispanic White	94
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	26
85 and over	0
Less than 65	0

Hypertension	51
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	29
Chronic Kidney Disease	13
Asthma	8
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	26
Dementia	9
Cancer	0

doctor visit	201
preventive care	13
vaccines	14

**Gender**
Male	75
Female	51

**Ethnicity**
Non-Hispanic White	94
Black	16
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	0
85 and over	0
Less than 65	31

Hypertension	56
High Cholesterol	41
Stroke	10
Ischemic Heart Disease	25
Depression	36
Chronic Kidney Disease	17
Asthma	9
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	0
Cancer	0

doctor visit	319
preventive care	9
vaccines	10

**Gender**
Male	180
Female	160

**Ethnicity**
Non-Hispanic White	240
Black	34
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	72
85 and over	32
Less than 65	70

Hypertension	67
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	29
Depression	33
Chronic Kidney Disease	27
Asthma	18
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	15
Diabetes	31
Dementia	9
Cancer	7

**Gender**
Male	82
Female	59

**Ethnicity**
Non-Hispanic White	104
Black	17
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	27
85 and over	0
Less than 65	0

Hypertension	61
High Cholesterol	44
Stroke	8
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	24
Asthma	13
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	0
Cancer	9

doctor visit	267
preventive care	17
vaccines	18

**Gender**
Male	95
Female	46

**Ethnicity**
Non-Hispanic White	94
Black	21
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	29
85 and over	0
Less than 65	0

Hypertension	65
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	30
Depression	28
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	0
Cancer	8

doctor visit	294
preventive care	14
vaccines	15

**Gender**
Male	102
Female	48

**Ethnicity**
Non-Hispanic White	101
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	26
85 and over	0
Less than 65	0

Hypertension	64
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	29
Depression	28
Chronic Kidney Disease	29
Asthma	10
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	27
Dementia	0
Cancer	9

doctor visit	312
preventive care	64
vaccines	65

**Gender**
Male	101
Female	54

**Ethnicity**
Non-Hispanic White	110
Black	21
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	31
85 and over	0
Less than 65	0

Hypertension	65
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	29
Dementia	7
Cancer	13

doctor visit	233
preventive care	47
vaccines	48

**Gender**
Male	113
Female	35

**Ethnicity**
Non-Hispanic White	115
Black	14
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	25
85 and over	0
Less than 65	0

Hypertension	55
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	30
Depression	26
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	8
Cancer	11

diabetes management	17
doctor visit	514
lab tests	17
preventive care	94
vaccines	77

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Thomas Edwin Klarquist, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Edwin Klarquist, MD treated as an internist in Chicago, IL were preventive care, vaccines, lab tests and diabetes management.

blood draw	16
diabetes management	17
doctor visit	291
lab tests	17
preventive care	35
vaccines	34

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Thomas Edwin Klarquist, MD.

**Gender**
Male	84
Female	49

**Ethnicity**
Black / African American	16
Asian / Pacific Islander	0
Non-Hispanic White	95
Native American / Alaskan Native	0
Hispanic	4
Other	0

**Age**
85 and over	3
75 to 84	23
Less than 65	10
65 to 74	73

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Edwin Klarquist, MD From 2013 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Edwin Klarquist, MD treated were hypertension, high cholesterol, depression and diabetes.

Hypertension	48
High Cholesterol	35
Stroke	3
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	19
Asthma	7
Osteoporosis	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	5
Diabetes	22
Atrial Fibrillation	2
Dementia	3
Cancer	5

Education & Training

Dr. Thomas Edwin Klarquist, MD graduated from Michigan State University College of Human Medicine in 1987. He is certified by the Internal Medicine and has a state license in Illinois.

Medical School: Michigan State University College of Human Medicine (1987)

Board Certification: Internal Medicine

Licensed In: Illinois

Affiliations & Hospitals

Dr. Thomas Edwin Klarquist, MD is associated with these hospitals and organizations:

Advocate Health Care

Advocate Illinois Masonic Medical Center

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. Thomas Edwin Klarquist, MD appears to accept the following insurance providers: CIGNA Choice Fund PPO, United Healthcare Select Plus POS, Magellan Health Services, United Healthcare Options PPO, Humana HMO Premier, United Healthcare Indemnity, Humana POS, Humana National POS - Open Access, Humana HMO, Unicare PPO, Blue Choice, Aetna POS, Aetna QPOS, TRICARE Prime, Aetna Open Choice PPO, Aetna Open Access HMO, Aetna Medicare HMO, Golden Rule, Great-West Healthcare, Community Care Network (CCN), TRICARE, Aetna Open Access Aetna Select, Aetna Select, Aetna EPO, Humana National HMO, Humana National EPO, Aetna HMO, CIGNA Open Access POS, Humana ChoiceCare PPO, CIGNA PPO, Aetna Medicare PPO, United Healthcare Choice Plus PPO, WellCare, AARP, Medicare Advantage, Humana Medicare Choice PPO, Blue Advantage HMO, Blue Cross Medicare Advantage PPO, United Healthcare, Medicare, Humana, Cigna, United Healthcare Navigate HMO, First Health, Beech Street, HealthLink PPO, HealthSmart, Humana PPO, Aetna, CIGNA Open Access Plus POS, PHCS PPO, CHAMPVA, MultiPlan PPO, SEIU - Local 4 PPO, Union Medical Care PPO, AAH UMR Select - Team Member Plan, HST Care Connect EPO, United Surest (previously Bind), Blue Cross HMO Illinois, Union Health Services, Inc., Blue Cross Med Select PPO, Benefits Services and Systems, Inc, FirstHealth, BCBS Commercial PPO, Blue Precision HMO, Provider Network of America (PNOA), AAH UMR Preferred - Team Member Plan, UFCW Local 1546 Health and Welfare Fund (UMC), Blue Cross Community FHP, SEIU - Local 4 HMO, Meridian MMAI, Meridian, HST Care Connect PPO, Zing Health, Blue Cross Community MMAI, BlueCare Direct HMO, Benefit Plan Administrators (BPA), Blue Cross Medicare Supplement PPO and SIHO PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Thomas Edwin Klarquist, MD accepts the following insurance providers:

CIGNA Choice Fund PPO

United Healthcare Select Plus POS

Magellan Health Services

United Healthcare Options PPO

Humana HMO Premier

United Healthcare Indemnity

Humana POS

Humana National POS - Open Access

Humana HMO

Unicare PPO

Blue Choice

Aetna POS

Aetna QPOS

TRICARE Prime

Aetna Open Choice PPO

Aetna Open Access HMO

Aetna Medicare HMO

Golden Rule

Great-West Healthcare

Community Care Network (CCN)

TRICARE

Aetna Open Access Aetna Select

Aetna Select

Aetna EPO

Humana National HMO

Humana National EPO

Aetna HMO

CIGNA Open Access POS

Humana ChoiceCare PPO

CIGNA PPO

Aetna Medicare PPO

United Healthcare Choice Plus PPO

WellCare

AARP

Medicare Advantage

Humana Medicare Choice PPO

Blue Advantage HMO

Blue Cross Medicare Advantage PPO

United Healthcare

Medicare

Humana

Cigna

United Healthcare Navigate HMO

First Health

Beech Street

HealthLink PPO

HealthSmart

Humana PPO

Aetna

CIGNA Open Access Plus POS

PHCS PPO

CHAMPVA

MultiPlan PPO

SEIU - Local 4 PPO

Union Medical Care PPO

AAH UMR Select - Team Member Plan

HST Care Connect EPO

United Surest (previously Bind)

Blue Cross HMO Illinois

Union Health Services, Inc.

Blue Cross Med Select PPO

Benefits Services and Systems, Inc

FirstHealth

BCBS Commercial PPO

Blue Precision HMO

Provider Network of America (PNOA)

AAH UMR Preferred - Team Member Plan

UFCW Local 1546 Health and Welfare Fund (UMC)

Blue Cross Community FHP

SEIU - Local 4 HMO

Meridian MMAI

Meridian

HST Care Connect PPO

Zing Health

Blue Cross Community MMAI

BlueCare Direct HMO

Benefit Plan Administrators (BPA)

Blue Cross Medicare Supplement PPO

SIHO PPO

Show More

Ratings & Reviews

Dr. Thomas Edwin Klarquist, MD has a high overall rating with an average of 4.25 out of 5 stars based on 4 ratings. We collect ratings and reviews of Dr. Thomas Edwin Klarquist, MD from all over the web to help you find the right in Chicago, IL.

4.25

Overall Rating

(4 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
ViiV Healthcare Company	$104 CABENUVA $46	TIVICAY $25	TRIUMEQ $20	APRETUDE $13
GlaxoSmithKline, LLC.	$65 $65
Janssen Products, LP	$50 PREZCOBIX $50
Janssen Pharmaceuticals, Inc	$28 $28
Gilead Sciences Inc	$22 $22
Other	$15 NON-PRODUCT $15

**Types of Payments**
Food and Beverage	$126
Education	$94
Consulting Fee	$65

Biography

Dr. Thomas Klarquist graduated from Michigan State University College of Human Medicine. Clinical interests for Dr. Klarquist include gastrointestinal problems (digestive disorders), depression, and travel medicine. Patients rated Dr. Klarquist highly, giving him an average of 4.0 stars (out of 5). Aetna EPO, Blue California, and Coventry are among the insurance carriers that Dr. Klarquist honors. Dr. Klarquist is professionally affiliated with Advocate Illinois Masonic Medical Center.