Thomas Klarquist, MD

Specialty: Internal Medicine

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Advocate Medical Group

3134 North Clark Street

Chicago, IL 60657

Get directions

Office: 312-766-4949

Fax: 312-766-4908

Meet Thomas Klarquist, MD

About me

  • Primary Care
  • AnxietyAnxiety DisordersCholesterolDepressionDiabetesGI DiseasesHIVHIV MedicineHypertensionHypertensionLGBTQ HealthMen's HealthObesityPreventive HealthRespiratory CareSexually Transmitted DiseaseSmoking CessationSTI Screening and TreatmentTGNC - Hormone/Surgery/ProceduresTravel MedicineUrinary Tract Infection



  • Michigan State University
  • University Of Louisville School Of Medicine
  • Michigan State University

Board certifications

  • Internal Medicine

Hospital affiliations

  • Advocate Illinois Masonic Medical Center

Insurance accepted

  • AAH Preferred – Team Member Plan
  • AAH Select – Team Member Plan
  • AARP Medicare Advantage Access HMO
  • Aetna Better Health Premier Plan MMAI
  • Aetna Coventry (Aetna Medicare) HMO
  • Aetna EPO
  • Aetna HMO
  • Aetna Managed Choice (MC) POS
  • Aetna Medicare HMO
  • Aetna Medicare POS
  • Aetna Medicare PPO
  • Aetna Medicare Value Plan PPO
  • Aetna NAP - PPO
  • Aetna Open Choice PPO
  • Aetna POS
  • Aetna Premier Care Network
  • Aetna Select
  • Aetna Signature Administrators PPO
  • Aetna State of Illinois HMO
  • Aetna State of Illinois Open Access Plus
  • Aetna State of Illinois PPO
  • Aetna Value Performance Network
  • Beech Street Network PPO
  • Benefit Plan Administrators (BPA)
  • Benefits Services and Systems, Inc
  • Blue Advantage HMO
  • Blue Cross Community FHP
  • Blue Cross Community ICP
  • Blue Cross Community MMAI
  • Blue Cross HMO Illinois
  • Blue Cross Med Select PPO
  • Blue Cross Medicare Advantage HMO
  • Blue Cross Medicare Advantage HMO-POS
  • Blue Cross Medicare Advantage PFFS
  • Blue Cross Medicare Advantage PPO
  • Blue Cross Medicare Supplement PPO
  • Blue Medicare Advocate Health HMO
  • Blue Precision HMO
  • BlueCare Direct
  • Cigna APWU Health Plan Open Access Plus
  • Cigna EPO
  • Cigna Health Partners POS
  • Cigna Healthspring True Choice PPO
  • Cigna HMO
  • Cigna NALC Health Benefits Plan
  • Cigna Open Access Plus
  • Cigna Open Access POS
  • Cigna POS
  • Cigna PPO
  • Cigna-HealthSpring Medicare Advantage HMO
  • Cofinity PPO
  • Coventry / FirstHealth
  • Coventry Health Care HMO
  • Coventry Health Care Open Access POS
  • Coventry Health Care POS
  • Coventry Health Care PPO
  • First Health Network PPO
  • FirstHealth / Coventry Personal Care
  • Galaxy Health Network PPO
  • Great West Healthcare - Cigna EPO
  • Great West Healthcare - Cigna PPO
  • HealthLink PPO
  • HealthSmart Preferred PPO
  • HST Care Connect EPO
  • HST Care Connect PPO
  • Humana Choice POS
  • Humana Community Select HMO
  • Humana HMO
  • Humana Illinois CCN HMO
  • Humana Medicare Advantage HMO
  • Humana Medicare Choice PPO
  • Humana Medicare Gold Plus HMO
  • Humana Medicare Supplement Plan
  • Humana MMAI
  • Humana National HMO
  • Humana National POS
  • Humana National POS - Open Access
  • Humana POS
  • Humana PPO
  • Medicare
  • Meridian
  • Meridian MMAI
  • MultiPlan PPO
  • SEIU – Local 4 HMO
  • SEIU – Local 4 PPO
  • Tricare Prime
  • UFCW Local 1546 Health and Welfare Fund (UMC)
  • UHC / AARP Medicare Advantage Value HMO - POS
  • UHC / AARP Medicare Complete HMO
  • UHC / AARP Medicare Complete Plan 1 HMO
  • UHC / AARP Medicare Complete Plan 2 HMO
  • UHC / AARP Medicare Supplement
  • UHC National Railway Carriers & United Transportation Union Health and Welfare
  • UHC Railroad Employees National Health & Welfare Plan
  • UHC/ AARP Medicare Advantage Choice PPO
  • UniCare PPO
  • Union Health Services, Inc.
  • Union Medical Care PPO
  • United Health One Golden Rule
  • United Healthcare Charter HMO
  • United Healthcare Choice Plus PPO
  • United Healthcare Choice PPO
  • United Healthcare Core PPO
  • United Healthcare Group Medicare Advantage PPO
  • United Healthcare Indemnity
  • United Healthcare Medica
  • United Healthcare Medicare Complete Assure PPO
  • United Healthcare Navigate HMO
  • United Healthcare NexusACO OA
  • United Healthcare NexusACO R
  • United Healthcare Options PPO
  • United Healthcare Oxford
  • Wellcare Health Plans HMO

Ratings and reviews

Overall rating

based on 742 patient ratings.


July 27, 2020 9:28 PM

He is ok. I usually communicate with him in the Advocate Aurora Portal and he responds promptly.

July 27, 2020 2:18 PM

Caring and attentive.

July 27, 2020 2:18 PM

Always a good experience with Dr. Klarquist.

July 27, 2020 2:17 PM

Dr. Klarquist is a very fine and knowledgable doctor.

July 9, 2020 9:37 AM

I have been a patient of Dr. Thomas Klarquist for more than 6 years at this time I am very satisfied with his service and treatment.

June 27, 2020 6:55 AM

He is outstanding. I trust him 100% for good care.

June 23, 2020 8:05 AM

he is a fairly new provider and I feel we are becoming more comfortable with each other.

June 22, 2020 7:51 PM

No feedback on unusual occurrence of chest pain. No explanation of blood test results, particularly high chloride and blood sugar levels.

June 18, 2020 11:24 AM

Visit was comprehensive. Dr. Klarquist is a good doctor who answered all my questions.

May 28, 2020 4:26 AM

Dr. Klarquist is very responsive with email. I hugely appreciate this and it is an important component of successful treatment. Thank you very much!

May 28, 2020 4:26 AM

A typical experience. I got in when I needed to and was thoroughly, efficiently, thoughtfully, and knowledgeably treated. Effective, pleasant, responsive, and hassle-free.

May 21, 2020 8:00 AM

Dr. Klarquist is so easy to talk to and non-judgmental! I feel like I can share private details and health related questions and he explains details very clearly.

May 21, 2020 8:00 AM

I have been a patient of Dr. Klarquist for 5 years and have enjoyed having a positive patient relationship. He is very understanding and knows how to make me feel comfortable.

May 18, 2020 7:04 PM

Dr Klarquist is the best. He is knowledgeable, friendly and always listens to what I'm saying.

May 15, 2020 9:41 AM

Provider seems disconnected and somewhat impersonable. I feel some things I share are judged unreasonable & dismissed.

May 15, 2020 9:41 AM

It is okay, I would like to find a more interactive doctor who shows more proactive interests in my health.

May 11, 2020 4:26 PM

The Doctor was very patient and answered all of my questions and listen to any concerns I mentioned.

April 27, 2020 4:16 PM

This. Was my first telemedicine appointment. It went well.

April 22, 2020 8:16 AM

Great experience. Thorough and respectful.

April 19, 2020 4:45 PM

always have a good experience with Dr. Thomas Klarquist

April 9, 2020 10:38 AM

Dr. Klarquist is a caring and comfortable man. I'm lucky to have found him and that he is my physician.

April 1, 2020 12:25 PM

Very responsive and professional

March 30, 2020 2:04 PM

Dr. Klarquist is the best doctor I've ever had.

March 30, 2020 1:25 PM

This was a virtual visit due to the pandemic. I appreciated that fact that he and his team kept my appoint time as scheduled.

March 30, 2020 1:25 PM

I've been seeing Dr Klarquist for more than a decade. While is practice has grown, he still maintains a personal approach to my care. This stands out from any other providers/specialists I've seen. I truly value the contributions he's made to my health and happiness.

March 23, 2020 3:18 PM

Dr Klarquist is very professional and presents a positive image.

March 15, 2020 5:48 PM

Dr. Klarquist is a very professional and capable doctor. I appreciate his openness to listen to my health concerns and give me his advice on how to stay healthy.

March 14, 2020 11:30 AM

I'm very happy with Dr. Klarquist. I'm 100% open about my lifestyle and habits, both good and bad. I feel Tom gives very good guidance without judgment.

March 14, 2020 11:30 AM

I feel like over my 20-year experience with you all as my primary provider you have improved significantly. You are much better organized and your systems are now at a current level. Integrate your billing would be your next big service step forward. Your billing folks are great but nothing is easy, for them or me.

March 10, 2020 11:18 AM

Excellent as always

March 7, 2020 1:55 PM

Very patient and considerate

March 7, 2020 4:23 AM

I really like the way Dr. Klarquist runs his office.

March 7, 2020 4:23 AM

He has been my provider for a very long time. I don't know what I will do when he retires.

March 2, 2020 8:58 PM

feels very structured and industrialized. I'm going to look for another provider.

March 2, 2020 2:28 PM

Dr Tom is great ! he always make sure everything with me is good and that I understand and he always answers all my questions/concerns

March 2, 2020 2:28 PM


February 25, 2020 7:15 AM

Dr Klarquist is always excellent -- personable, engaged, willing to answer any questions and very responsive both in office and through messages in-between visits. I recommend him frequently to others. His resident was also very good and made an excellent impression.

February 24, 2020 4:19 PM

I love my doctor but that being said, I'm a little disillusioned as of late with his "bedside manor "

February 18, 2020 8:20 AM

Dr. Klarquist is consistent in his excellent provision of high quality care.

February 18, 2020 8:20 AM

Only positive experience. I have never had a negative experience with Dr. Klarquist. He always provides quality care.

February 15, 2020 7:53 AM

Dr. Klarquist is easy to talk to and understand. The last appointment was my first with him, and though I mainly spoke with a doctor who was shadowing him, Dr. Klarquist was fully aware of and attentive to my medical and health needs.

February 15, 2020 7:53 AM

This appointment was a positive experience. I felt comfortable and safe, so I will continue with Dr. Klarquist and follow up on his recommended specialists.

February 13, 2020 11:05 AM

Good visit.

February 10, 2020 6:34 PM

it was good

February 10, 2020 6:34 PM

all good

February 8, 2020 10:46 PM

Was attentive, review my health progress.

February 3, 2020 4:22 PM

Terrible getting provider to respond via the Aurora Advocate Portal.

January 25, 2020 12:32 PM

Tom is great

January 25, 2020 9:37 AM

he is very friendly. At times seems quick to make a judgment and stops listening. he is quick to refer instead of finding out if it can be solved. sometimeses I feel Ny concerns were not addressed.

January 25, 2020 9:37 AM

location is convenient. wait time for lab is upsetting and too high.

January 25, 2020 6:44 AM

It was great being taken care of by Tim again. he is always pleasant and professional. Dr. Karlquist is always very nice, personable, and professional. I appreciate his calm demeanor and dialogue during a visit.

January 19, 2020 2:52 PM

always on top of matters with good suggestions.

January 19, 2020 8:20 AM

Dr. Tom is awesome. Thank you!

January 17, 2020 5:57 AM

Please work on the wait time for taking lab test. The amount of time we have to wait to give blood and or urine can be extensive.

January 14, 2020 9:49 PM

Good. Runs like a well oiled machine.

January 10, 2020 8:57 AM

Dr. Klarquist and his CMA are great - no issues or concerns.

January 8, 2020 7:32 AM

He is one of the best doctors, always is on top of everything.

January 6, 2020 1:51 PM

Dr Klarquist is a very attentive doctor. He listens and always has an answer. I'm very satisfied with him.

January 6, 2020 1:41 PM

I love Dr. Klarquist!

January 4, 2020 6:11 AM

always thorough and competent

January 3, 2020 12:11 PM

Dr. Klarquist always has my health records with him during my visit and he treats me with what I feel is special treatment.

January 1, 2020 7:22 PM

Always a fun visit with my doctor and his staff.

December 30, 2019 6:44 PM

Tom has always been a an effective and friendly provider. I know I can trust himwith any problem.

December 30, 2019 6:44 PM

The environment definitely feels like healthcare for the masses, but once you are in the room with your provider, the care feels personal.

December 30, 2019 1:45 PM

Very much so liked Dr. Klaquist. Though he was professional, courteous, listened well to my health concerns and gave me good advice on what to do moving forward.

December 30, 2019 1:45 PM

Great experience overall, looking forward to the next time i have to see him.

December 23, 2019 1:23 PM

Dr. Tom is the finest doctor and provides the absolute best care for me

December 21, 2019 9:31 PM


December 21, 2019 9:31 PM

I'm a RN, MS retired. I have excellent relationship with my Dr. & his medical group.

December 9, 2019 8:21 PM

On-time, friendly.

December 2, 2019 12:17 PM

Nothing additional to add. Dr. Klarquist is ALWAYS pleasant, knowledgeable and professional. I hope he never retires!

November 30, 2019 1:46 AM

Ok care, but bed side manner is a little distant and not so concerning. Wanting things to be done ASAP. Not wanting to involve self too deeply.

November 26, 2019 4:40 PM

It went well.

November 25, 2019 1:50 PM

Nice and easy... as always. No complaints, only compliments.

November 25, 2019 1:50 PM

Wasn't happy with the 1-hour wait for the blood & urine tests...

November 24, 2019 8:20 PM

I have been seeing Dr. Klarquist for about 15 years or more. Unfortunately my health insurance does not accept Advocate, however I like the Dr. so much that I pay out of pocket. He is very through and a great doctor

November 20, 2019 9:42 AM

I love Dr. Tom. I have some issues with compassion and actual listening but I would not trade him for anything! He is awesome, cares tremendously about his patients. I think he is very sympathetic and kind but it doesn't always shine through...guarded as it were emotionally which is understandable since he is saving the world and can't get emotionally involved with every patient! some of his staff I do not care for since they need retraining in their personalities and when I reported it, it was summarily dismisses with no follow up as if it never happened or was minuscule. still bot over that one issue and will never be so now I am a bit guarded and it's all business for me from here in out with no room for personal feelings anymore which is rather sad but necessary. it's as if you've realized that someone you put on a pedestal is not the god you revere them to be...only human with traits and characteristics just like everyone else that makes them a mere mortal.

November 18, 2019 10:47 AM

Dr. Klarquist and the team at Advocate Medical Center are fantastic! They are always courteous and help my family in our medical care.

November 16, 2019 5:10 PM


November 16, 2019 5:10 PM

Good interaction

November 15, 2019 11:00 PM

My last visit was very good & myself was satisfied, Dr. is friendly and experienced professional

November 15, 2019 11:00 PM

Nice experience

November 15, 2019 11:00 PM


November 15, 2019 9:50 AM

Very happy with all _____ providers at I. Masonic Advocate. They are life savers!

November 12, 2019 9:29 AM

I really liked Dr. Klarquist. I felt comfortable speaking with him about all of my health concerns, and the way he communicated was clear and easy for me to understand.

November 11, 2019 1:21 PM

doctor excellent. office and advocate health horrible.

November 10, 2019 11:00 PM

I have been a patient of Dr. Klarquist's for approximately 12 years and he is absolutely the best - kind, understanding and always ready to listen to what I have to say. I believe it is rare to find such a great doctor and I feel very lucky that I am his patient.

November 8, 2019 11:00 PM

Dr. Klarquist has always had my best interests in mind.

November 8, 2019 11:00 PM

Always treated with respect and kindness

October 28, 2019 7:00 PM

I think he is wonderful. He always helps me with what I need. He has a great "bedside manner." He is very knowledgeable.

October 27, 2019 7:00 PM

Dr. Klarquist is an excellent physician, listens to his patients and explains clearly all questions asked.

October 25, 2019 7:00 PM

Love coming to this facility and the staff are great.

October 20, 2019 7:00 PM

He is always prompt, good natured, and knowledgeable.

October 20, 2019 7:00 PM

It is very noticeable that Advocate can only allow their doctors a certain amount of time to spend with each patients and to try and sell additional test without explaining the reason for these additional tests. Reveune seems now to be more important then spending 5 more minutes with the patient.

October 18, 2019 7:00 PM

Always an excellent experience.

October 14, 2019 7:00 PM

I trust you with my health care.You treat me with respect and listen as to what my concerns are.Give me advise on what can better me ion my health.I feel I have finally found a doctor that listens. Truly a very nice doctor.

October 14, 2019 7:00 PM

Dr. Klarquist is great. Always spends adequate time with me.

October 14, 2019 7:00 PM

Good experience

October 13, 2019 7:00 PM

I will be looking for a new provider outside of Illinois Masonic. Between Dr. Klarquist and Dr. X, I can honestly say I haven't received such terrible service before.

October 11, 2019 7:00 PM

Dr K is a friendly, knowledgeable provider looking at a holistic health perspective.

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Information listed under the "clinical interests" columns was supplied by the physicians. It is provided to you for informational purposes only, and neither Advocate Health Care nor the Advocate facility has independently verified the information. If you wish to confirm the information contained herein, or if you have any other questions about a particular physician, please contact the physician’s office.

Unless otherwise stated, physicians are independent practitioners who are not employees or agents of Advocate Health Care or the Advocate facility where the care is being provided. Neither Advocate Health Care nor the Advocate facility shall be liable for the medical care provided or decisions made by these independent physicians.

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