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Dr. Mark Thel, MD

Dr. Mark Thel, MD

Cardiology*
35+ years of experience
(423) 225-5327

Dr. Mark Thel, MD is a cardiologist in Chattanooga, TN and has over 35 years of experience in the medical field. Dr. Thel has extensive experience in Adult Congenital Heart Conditions, Interventional Cardiac Procedures, and Heart Conditions. He graduated from Georgetown University School of Medicine in 1986. He is affiliated with CHI Memorial Hospital Chattanooga. He is accepting new patients.

3.6 Star Rating
Based on 19 reviews 3.6 Star Rating (19 reviews)
(423) 225-5327
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Accepting New PatientsSecure Call
2501 Citico Ave
Chattanooga, TN 37404

Brought to you by and on staff at

CHI Memorial Hospital Chattanooga

Office Hours

Monday

8 am
to
4 pm

Tuesday

8 am
to
4 pm

Wednesday

8 am
to
4 pm

Thursday

8 am
to
4 pm

Friday

8 am
to
4 pm

Saturday

Closed

Sunday

Closed
(423) 225-5327
Call us 24/7 to securely book an appointment
2501 Citico Ave
Chattanooga, TN 37404

Locations

The Chattanooga Heart Institute

The Chattanooga Heart Institute - Chattanooga2501 Citico Ave Chattanooga, TN 37404
1
  • Call
  • Fax
  • Hours
    • Mon: 8:00am - 4:00pm
    • Tue: 8:00am - 4:00pm
    • Wed: 8:00am - 4:00pm
    • Thu: 8:00am - 4:00pm
    • Fri: 8:00am - 4:00pm
    • Sat: closed
    • Sun: closed
  • Directions
New Patient?
(423) 225-5327

Hospital Highlight

Dr. Thel is affiliated with CHI Memorial Hospital Chattanooga Chattanooga, a highly rated and top awarded hospital for cardiology.

Dr. Thel is a Healthgrades Choice provider in Cardiology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Areas of Expertise • Dr. Thel specializes in the areas of Cardiovascular Disease & Interventional Cardiology. See board certifications
  • Friendly Staff • Patients said the staff was friendly. See reviews
  • Practices at Top Hospital • America’s 100 Best Hospitals for Coronary Intervention Award™ See hospitals
  • Hospital Satisfaction • Patients said they were highly satisfied at this doctor's hospital. See hospitals

More Cardiology Specialists at The Chattanooga Heart Institute

Experience Check

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Dr. Thel's Reviews

Likelihood to recommend Dr. Thel

3.6
19 ratings, 6 with a written review
5 star
63%
63%
4 star
0%
0%
3 star
0%
0%
2 star
5%
5%
1 star
32%
32%

Your trust is our top concern.

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He was very rude and needs to learn how to talk to people .
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
Helpful
Gloria westmoreland – May 20, 2024
Our goal is to provide the best possible care and... Read More
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Arrogant “Know it All” Attitude.
I am a 75 year old male. I experienced mild chest pain and saw Dr. Thel. He told me he didn’t think it was my heart but still ordered expensive test. During my initial visit he was short with me but I thought he had more serious cases to deal with. During my next 5 minute visit, to get the test results, he was again short with me and this time insulted me about the supplements that I was taking. When I tried to explain my reasons for taking them he cut me off and stated that he was the professional and should know what was good to take or not. In my opinion he is an arrogant person who thinks he knows everything about every field of medicine and cares more about supporting the system than he cares about patients. I have ask for my records to be sent to a different Dr. who works at the Chattanooga Heart and Rhythm Center.
What went well
  • Appointment scheduling
  • Explained conditions well
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
David L. Cunningham – May 07, 2024
Thank you for your feedback. We are always... Read More
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Great dr
Great Dr kind and good to me and my family. My heart is a very complicated case and he's doing all he can to keep me alive.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Krissie N Deweese – Jul 11, 2022
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the best there is
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
May 08, 2019
×Post a ResponseAre you Dr. Thel?
Dr. Thel was a wonderful doctor. He was on call the night I had my heart attack and I am so glad he was. I would recommend him to any of my family and friends. He will be my cardiologist as long as I can keep him.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Cleveland – Apr 17, 2018
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He has great bedside manners and is very attentive.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
2 others found this helpful
Helpful
Sally Atkins in Chattanooga, TN – Jan 30, 2018
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About Me

Watch Dr. Thel's Video

care philosophy

The Chattanooga Heart Institute's 22 board-certified cardiologists ensure that patients have an entire team of highly-skilled specialists committed to providing comprehensive cardiovascular care and to enhancing the quality of life for each person we s

  • Cardiology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Duke University Medical Center

    Fellowship Hospital, 1993

  • Duke University Medical Center

    Residency Hospital, 1992

  • Portsmouth Naval Hospital

    Internship Hospital, 1987

  • Georgetown University School Of Medicine

    Medical School, 1986
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Cardiovascular Disease
- 
Interventional Cardiology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Dr. Thel is a Healthgrades Choice provider in Cardiology

    Read our methodology

    Affiliated Hospitals

    • CHI Memorial Hospital Chattanooga

      2525 Desales Ave
      Chattanooga, TN 37404
      Recipient of 23
      hospital awards

      America’s 100 Best Hospitals for Coronary Intervention Award™ (2025)

      Top 5% in the nation for consistently delivering clinical quality

      America's 250 Best Hospitals Award™ (2025, 2024)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      86%
      Patients said they were given information about recovering at home

      2% higher than the national average

      84%
      Patients said that doctors always listened to them and explained things well

      8% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality