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Department Cardiovascular Medicine
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages Cantonese, English, Malay, Mandarin Chinese
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Ablation of Atrial Arrhythmias
  • Ablation of Complex Arrhythmias
  • Ablation of Ventricular Arrhythmias
  • Ablation Therapy for Atrial Fibrillation
  • Abnormal Rhythm Ablation
  • Biventricular (BIV) ICD Implantation
  • Biventricular Pacemaker
  • Cardiac Electrophysiology and Pacing Section
  • Cardiac Resynchronization Therapy (CRT)
  • Cardiac Resynchronization Therapy (CRT) Defibrillator
  • Cardiac Resynchronization Therapy (CRT) Pacemaker
  • Catheter Ablation
  • Implantable Cardioverter Defibrillator (ICD)
  • Pacemaker - Permanent
  • Pacemaker Implant
  • Pacemaker Lead Replacement
  • Pacemaker Revision
  • Pulmonary Vein Ablation Procedure
View all 18 Treatment & Services +

Specialty in Diseases & Conditions

  • Abnormal Heart Rhythms
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrial Tachycardia
  • Bradyarrhythmias
  • Heart Palpitations
  • Post Maze Arrhythmia
  • Premature Ventricular Complexes
  • Sinus Node Dysfunction
  • Supraventricular Tachycardia
  • Ventricular Fibrillation
  • Ventricular Tachycardia
  • Wolff-Parkinson-White Syndrome (WPW)
View all 13 Specialties +


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About Justin Lee, MD

Justin Lee, MD, is a clinical cardiac electrophysiologist in the Section of Cardiac Electrophysiology and Pacing of the Robert and Suzanne Tomsich Department of Cardiovascular Medicine in the Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute. Dr. Lee sees patients at Main Campus.

Specialty Interests: Atrial fibrillation, ventricular tachycardia, premature ventricular complexes (PVC), conduction system pacing

Experience: Physicians in the Section of Cardiac Electrophysiology and Pacing use specialized approaches to diagnose and treat thousands of patients each year with a wide variety of abnormal heart rhythms. Dr. Lee is experienced in the diagnosis and management of these disorders, including pacing, implantable cardioverter defibrillation and cardiac resynchronization therapy. 

Success Rates: Cleveland Clinic is nationally and internationally renowned for the world’s best cardiovascular care, drawing patients from across the country and around the world. To learn about patient outcomes for specific conditions and procedures at Cleveland Clinic, go to http://my.clevelandclinic.org/heart/about-heart-vascular-institute/treatment-outcomes.aspx

Education: Dr. Lee earned his medical degree from International Medical University, Kuala Lumpur, Malaysia. He completed his internal medicine residency at the University of Arizona, Tucson, Arizona, followed by a cardiology fellowship at Mayo Clinic, Phoenix, Arizona. After serving as chief fellow in his final year of training there, he continued his training through a clinical cardiac electrophysiology fellowship at Mayo Clinic, Rochester, Minnesota.

Dr. Lee returned to Mayo Clinic in Phoenix as a clinical cardiac electrophysiologist and assistant professor of medicine at the Mayo Clinic College of Medicine in 2021. He joined the Cleveland Clinic medical staff in 2022.

Dr. Lee is board certified in clinical cardiac electrophysiology, cardiovascular diseases, adult comprehensive echocardiography, and internal medicine.

Research, Publications and Speaking: Dr. Lee is an avid clinical researcher in the areas of procedural outcomes and procedural innovation. He has coauthored more than 50 research papers published in leading peer-reviewed cardiology journals since 2013. He also has coauthored a number of textbook chapters related to cardiac pacing and lead extraction.

Dr. Lee frequently presents poster abstracts of his research at national medical meetings, including scientific sessions of the Heart Rhythm Society, American College of Cardiology and American Heart Association.

About Dr. Lee: “I consider it a privilege to serve patients by managing complicated heart rhythm disorders. My greatest strength as an electrophysiologist is my ability to offer patients the latest therapeutic approaches for their arrhythmias geared towards maximizing safety and optimizing outcomes.”

Leisure Activities: Outside of work, Dr. Lee enjoys spending time with his family, playing board games, and listening to audiobooks. 

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Mayo Clinic
Clinical Cardiac Electrophysiology Fellowship
Rochester, MN USA

Fellowship - Mayo Clinic
Cardiovascular Diseases
Phoenix, AZ USA

Residency - University of Arizona College of Medicine
Internal Medicine
Tucson, AZ USA

Medical Education - International Medical University, Malaysia
Bukit Jalil, Malaysia

Undergraduate - Taylor's University College
Cambridge A-Levels
Subang Jaya, Malaysia

Additional Training


  • Internal Medicine - Cardiovascular Disease
  • Adult Comprehensive Echocardiography
  • Internal Medicine
  • Internal Medicine - Clinical Cardiac Electrophysiology
Research & Publications

Research & Publications

See publications for Justin Lee, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 4/2/2024, Dr. Lee has reported the financial relationships with the companies listed below. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

261 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.8 out of 5
Explains 4.8
Listens 4.7
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.8

50 Patient Comments

Reviewed on Mar 22, 2024

Dr. Lee is very knowledgeable about his field of study.. Took the time to explain and answer questions. He had incredible bedside manner.I would definitely recommend him to anyone

Reviewed on Mar 22, 2024

I appreciated Doctor Lee's approach, making sure that I was aware of the risks involved. He explained the situation with a drawing which I was grateful for. It helped me understand.

Reviewed on Mar 18, 2024

Outstanding Dr Lee is very understanding, provides in depth explanations, provides great assurance

Reviewed on Mar 18, 2024

We loved Dr Justin Lee

Reviewed on Mar 8, 2024

Dr. Lee is incredible!

Reviewed on Mar 1, 2024

If I could give Dr. Justin Z Lee a better rating than "very good" I would!

Reviewed on Feb 23, 2024

Very nice physician. Very thorough, kind, extremely intelligent and I felt very comfortable with his explanations to my questions.

Reviewed on Feb 22, 2024

Dr lee was excellent

Reviewed on Feb 2, 2024

Dr. Lee is brilliant & always so professional & explains your medical issues so you understand easily. Gives you the opportunity to participate & explains the plan for treatment. I was impressed he initiated the phone call. Very comforting. The clinic staff is always friendly & eager to help.

Reviewed on Feb 2, 2024

100% Recommend Dr.Lee. He is so caring and explains things in a way to understand.

Reviewed on Jan 8, 2024

Dr. Lee is absolutely amazing & has the best bedside manner of any practitioner I have ever seen. He is a great listener, he is patient, kind, extremely thorough. I never feel rushed at my appointments. He takes his time & explains everything thoroughly making sure I understand & addresses all of my concerns. My family & I are very pleased with Dr. Justin Lee & his team.

Reviewed on Dec 15, 2023

Dr Lee is very conscientious in providing care

Reviewed on Dec 1, 2023

Great visit with Dr Lee

Reviewed on Nov 27, 2023

Dr. Lee is great.

Reviewed on Nov 27, 2023

I was disappointed in Dr Lee . The reason why is they change the pacemaker reading but I'm still feeling bad . He said will just live with it . I decided that I will be going to another Dr in the clinic.

Reviewed on Oct 30, 2023

My video visit worked out very well for me. It saved me a long, long trip and speaking with the staff and doctor was as if I was in the office with them. I'm very pleased.

Reviewed on Oct 27, 2023

Dr Justin Lee is a fantastic doctor and a wonderful human being. He listens, be teaches and explains, and involves you totally. We have 100% confidence in him and are extremely thankful to have him for my physician.

Reviewed on Oct 20, 2023

I was very impressed with how thorough Dr. Lee was in explaining my problem and making sure I understood my treatment options.

Reviewed on Oct 20, 2023

Dr J Lee is Exceptional, He Listens & seeks patients input including any and all questions. Explains his assessment &!includes drawings that add to understanding. He's aware of the most recent research. Excellent physician

Reviewed on Oct 13, 2023

The interaction with care provider was outstanding.

Reviewed on Oct 13, 2023

Dr. LEE is a Excellent doctor that cares about his patients and answers all your questions and listens to you when you have a question or concerns. He had a very calming effect on me. I would recommend him as a number one choice for your doctor. He truly knows what he he talking about and cares about his patients. He is the BEST. Thank you.

Reviewed on Oct 13, 2023

I had a wonderful experience at Cleveland Clinic. Dr. Lee is caring, thoughtful, and great at his job. THANK YOU!!

Reviewed on Oct 13, 2023

I love Dr. Lee!

Reviewed on Sep 18, 2023

Dr. Lee is very thorough and took his time.

Reviewed on Sep 18, 2023

Dr. Justin Lee was a pleasant surprise and a conscientious doctor. He read and understood my questions and responded with care.

Reviewed on Sep 15, 2023

Dr. Lee is an excellent physician and he appeared genuinely concerned and addressed all my questions specifically and succinctly. Thank you!

Reviewed on Aug 25, 2023

Dr is very understanding and helpful. I felt that I was in great hands.

Reviewed on Aug 21, 2023

Very informative conversation with Dr. Lee on my options for treating my Afib

Reviewed on Aug 18, 2023

Cleveland Clinic and Dr. Lee were both outstanding. I felt like I had 8 years of questions answered in one appointment in a detailed fashion. I felt comfortable with Dr. Lee and he was considerate of every concern that I had. I was impressed and overall happy with the outcome of my visit.

Reviewed on Aug 11, 2023

Dr Lee was very informative and very pleasant in explanation. The best I have had in a very long time. I would recommend him.

Reviewed on Aug 7, 2023

Dr lee was very informative and took the time to explain my condition in detail.

Reviewed on Aug 4, 2023

Love dr Lee.

Reviewed on Jul 10, 2023

Dr Lee and his staff are very efficient, concerned and kind. Great group of care givers. Highly recommend.

Reviewed on Jul 10, 2023

GREAT Doctor!

Reviewed on Jun 30, 2023

Dr.Justin Lee was very compassionate and explains well and even in picture form!!!

Reviewed on Jun 30, 2023

I really enjoyed the personal visit with Doctor on 6/30/23 and staff for Echo stress test, EKG and ultrasound was excellent

Reviewed on Jun 26, 2023

I greatly appreciated Dr. Lee's kindness and patience. He promptly responded to my questions in My Chart.

Reviewed on Jun 26, 2023

I highly recommend Dr. Lee!

Reviewed on Jun 23, 2023

Doctor Lee was very good with explanations and making sure that I understood what he was saying and asked me several times if I had any questions

Reviewed on Jun 16, 2023

Exceptional, world-class medical organization! I have supreme confidence in Dr. Lee and staff while managing my care.

Reviewed on Jun 16, 2023

First experience with Dr. Lee. I really like him. I only wish that he was doing my procedure but apparently he doesn't do surgeries on Fridays.

Reviewed on Jun 12, 2023

Dr. Lee was one of the best visits I've had. He was very instructive and helpful. Top quality doctor.

Reviewed on Jun 12, 2023

Best doctor visit ever.

Reviewed on Jun 12, 2023

Dr. Lee did an outstanding job explaining my test results and had a treatment regimen already to go for me.

Reviewed on Jun 12, 2023

Very much liked the fact that dr lee spells out the options very clearly (literally)

Reviewed on Jun 9, 2023

I'm very pleased with Dr Lee

Reviewed on Jun 9, 2023

Everyone was friendly and helpful, Dr was friendly and informative, over all experience was all I hoped it would be

Reviewed on Jun 9, 2023

Dr. Lee is an amazing doctor with a gift for instilling calm into a nervous patient and their family.

Reviewed on May 26, 2023

Dr Lee carefully explained everything.

Reviewed on May 15, 2023

Dr. Lee was very friendly, caring and very knowledgable.

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