Dr. Mark Thel, MD

CardiologyMaleAge 61

Dr. Thel
Accepting new patients

The Chattanooga Heart Institute

2501 CITICO AVE Chattanooga, TN 37404

Make an Appointment

(423) 697-2000

Dr. Mark Thel, MD is a Cardiology Specialist in Chattanooga, TN and has over 35 years of experience in the medical field. Dr. Thel has more experience with Adult Congenital Cardiac Disorders than other specialists in his area. He graduated from Georgetown University medical school in 1986. He is affiliated with CHI Memorial Hospital Chattanooga. He is accepting new patients. Be sure to call ahead with Dr. Thel to book an appointment.

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Hospital Highlight

Affiliated with CHI Memorial Hospital Chattanooga Chattanooga, a highly rated hospital.

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Practices at Top Hospital
    Outstanding Patient Experience Award™ See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. See hospitals

Experience and Background Checks


Background Check

No malpractice claims found for Tennessee
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Frequently Treated by Dr. Thel

Based on treatment records, we have identified the following as areas of care that Dr. Thel treats more often than their peers. If you are unsure whether Dr. Thel treats other conditions, please contact the office at (423) 697-2000.

Adult Congenital Cardiac Disorders

Adult congenital cardiac disorder specialists diagnose and treat heart disorders, such as arrythmias and mitral valve disease, that have been present from birth to adulthood.Compare with other Adult Congenital Cardiac Disorders specialists.

Dr. Thel typically treats 67% more often than similar doctors

Based on claims data for 3 conditions and procedures

Aortic Valve Disease
Mitral Valve Disease
Aortic Valve Regurgitation
Normal Frequency
High Frequency
Very High Frequency
Dr. Thel
Similar Providers

Check Dr. Thel's experience treating your condition or procedure

Dr. Thel's conditions and procedures:

  • Aneurysm
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Ectasia
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Aortic Valve Surgery
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Myocardial Perfusion Imaging
  • Cardiomegaly
  • Cardiomyopathy
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Carotid Artery Disease
  • Coarctation of the Aorta
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Angioplasty, Atherectomy and Stent
  • Coronary Artery Disease (CAD)
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypotension
  • Impella Device
  • Marfan Syndrome
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Mitral Valve Surgery
  • Non-Coronary Angioplasty, Atherectomy, and Stenting
  • Pericardial Disease
  • Peripheral Artery Catheterization
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Septal Defect
  • Syncope
  • Thoracentesis
  • Transcatheter Aortic Valve Replacement (TAVR)
  • Transcatheter Mitral Valve Repair
  • Tricuspid Valve Disease
  • Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary)
  • Vascular Disease
  • Vascular Duplex Ultrasonography and Plethysmography

Insurance Check

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Dr. Thel accepts

Accepted insurance can change. Please double-check when making an appointment.

(423) 697-2000

Dr. Thel accepts the following insurance:

Choice Plus POS II
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Georgia
Blue Open Access POS
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna HMO
Cigna PPO
Open Access Plus
Choice Care PPO

Dr. Thel's Reviews

Likelihood to recommend Dr. Thel


Based on 14 ratings

5 Stars
4 Stars
3 Stars
2 Stars
1 Star
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How likely are you to recommend
Dr. Thel?
(Select your rating)
What went well
  • Office environment (11)
  • Staff friendliness (11)
  • Appointment scheduling (10)
What could be improved
  • Didn't listen or answer questions (4)
  • Appointment was rushed (3)
  • Didn't explain conditions well (3)
RecentHighestLowestMost Helpful
Reply Flag
the best there is
What went well
No results
What could be improved
No results
May 08, 2019
×Post a ResponseAre you Dr. Mark Thel, MD?
Reply Flag
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
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Cleveland – Apr 17, 2018
×Post a ResponseAre you Dr. Mark Thel, MD?
Reply Flag
He has great bedside manners and is very attentive.
What went well
No results
What could be improved
No results
Sally Atkins in Chattanooga, TN – Jan 30, 2018
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About Me

Care Philosophy

The Chattanooga Heart Institute's 22 board-certified cardiologists ensure that patients have an entire team of highly-skilled specialists committed to...Read more


  • Cardiology
  • Interventional Cardiology

Board Certifications


Duke University Medical Center
Fellowship Hospital
Duke University Med Center
Residency Hospital
Portsmouth Naval Hosp
Internship Hospital
Georgetown University
Medical School
University of Virginia
Undergraduate School


Frequently Asked Questions

Is Dr. Mark Thel, MD accepting new patients?

Dr. Mark Thel, MD generally accepts new patients on Healthgrades. You can see Dr. Thel's profile to make an appointment.

Does Dr. Mark Thel, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Thel accepts your insurance.

What are Dr. Mark Thel, MD's top areas of care?

Dr. Thel frequently treats Adult Congenital Cardiac Disorders. See all practice areas where Dr. Thel specializes.

Where is Dr. Mark Thel, MD's office located?

Dr. Thel's office is located at 2501 CITICO AVE, Chattanooga, TN 37404. Find other locations and directions on Healthgrades.

Does Dr. Mark Thel, MD offer telehealth services?

Dr. Thel has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. Mark Thel, MD?

Find contact information here to make an appointment.


The Chattanooga Heart Institute

The Chattanooga Heart Institute2501 CITICO AVE Chattanooga, TN 37404

Affiliated Hospitals

Check the quality of care at hospitals where Dr. Thel treats patients.

Learn more

CHI Memorial Hospital Chattanooga

Chattanooga, TN

79% Patient experience rating, 10% higher than the national average

  • Outstanding Patient Experience Award™ (2020, 2019, 2018)