Highlights
Age Groups Seen
- Adult 19-64
- Older Adult >65
Gender
MaleHospital Affiliation
- St George Regional Hospital
- Cedar City Hospital
About
About The Provider
Kenneth Lightheart is a cardiologist with subspecialty expertise in nuclear cardiology and a particular interest in transesophageal echocardiography—a relatively low-stress test that lets clinicians see the heart from a unique vantage point. He believes the best decisions are made together, taking time to explain the “why” behind every recommendation so patients can confidently choose the next step in care.
Dr. Lightheart earned a BA in Korean Studies from Brigham Young University and an MD from Oregon Health & Science University. He completed internship at Legacy Portland Hospitals and residency at David Grant Medical Center, Travis Air Force Base. He is board-certified by the American Board of Internal Medicine in Cardiovascular Disease and by the Certification Board of Nuclear Cardiology. A U.S. Air Force veteran, he achieved the rank of Major—experience that honed his focus on preparation, precision, and staying on time for patients.
Originally from Springfield, Oregon, he enjoys golf, tennis, jogging, traveling, and time spent playing games with his family.
Locations
- St. George Cardiology Clinic
- 1380 East Medical Center Drive, Suite 1500, Saint George, UT 84790
- Get Directions
- Phone: 435-251-2500
- Fax: 385-297-2167
- Mesquite Clinic - Cardiology
- 786 West Pioneer Boulevard, Suite A, Mesquite, NV 89027
- Get Directions
- Phone: 435-251-3570
- Fax: 435-251-3501
- Mesquite Clinic - Heart Rhythm
- 786 West Pioneer Boulevard, Suite A, Mesquite, NV 89027
- Get Directions
- Phone: 435-251-3570
- Fax: 435-251-3501
Expertise
Education
- Fellowship: San Antonio Uniformed Services Health Education, Cardiovascular Disease, 2000
- Residency: David Grant USAF Medical Center, Internal Medicine, 1997
- Internship: Legacy Emanuel Medical Center, Internal Medicine, 1995
- Medical School: Oregon Health & Science University School of Medicine, 1994
Board Certifications
- Cardiovascular Disease: American Board of Internal Medicine, 2000
Licensed States
- License ID: 21932, State: NV
- License ID: MD22698, State: OR
- License ID: 12330716-1205, State: UT
Reviews
4.9 of 5 stars
458 Ratings, 34 ReviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 7/31/2026
Dr Lightheart actually cares about you. Very friendly and explains everything so I can understand. Never makes me feel like he is rushing me.
- 5 out of 5 starsReviewed on 7/12/2026
Very trustworthy.
- 5 out of 5 starsReviewed on 6/25/2026
He is great about being concerned about my health and needs, I am thankful for his attention when need arrives.
- 5 out of 5 starsReviewed on 5/27/2026
Great service
- 5 out of 5 starsReviewed on 5/26/2026
Very good explanation
- 5 out of 5 starsReviewed on 4/28/2026
A great doctor who cares and listened to my concern. Made me feel less stressed.
- 5 out of 5 starsReviewed on 4/24/2026
I'm still alive because of Dr Lightheart.
- 4 out of 5 starsReviewed on 4/22/2026
Comfortable atmosphere with him.
- 5 out of 5 starsReviewed on 4/14/2026
Highly informative to learn of developing problems and learn ways to alleviate and possibly improve
- 5 out of 5 starsReviewed on 4/9/2026
Excellent communications
- 5 out of 5 starsReviewed on 4/7/2026
Good appointment
- 5 out of 5 starsReviewed on 4/6/2026
He was very clear on explaining my concerns and making adjustments where needed with my meds...
- 5 out of 5 starsReviewed on 4/2/2026
Trust his professionalism and overall care with all my heart.
- 5 out of 5 starsReviewed on 3/29/2026
Listened to me and asked what questions I might have.
- 5 out of 5 starsReviewed on 3/29/2026
I trust him
- 5 out of 5 starsReviewed on 3/5/2026
Dr. Lightheart was very kind and informative. My experience was pleasant.
- 5 out of 5 starsReviewed on 3/3/2026
He listens and explains
- 5 out of 5 starsReviewed on 3/1/2026
I appreciate the Dr taking the time to answer questions and concerns.
- 5 out of 5 starsReviewed on 2/28/2026
Easy to talk to
- 5 out of 5 starsReviewed on 2/21/2026
Positive...
- 5 out of 5 starsReviewed on 2/20/2026
I left with a very positive feeling that I would get the best of care from him.
- 5 out of 5 starsReviewed on 1/26/2026
He is easy to talk to & explains everything very well.
- 5 out of 5 starsReviewed on 1/25/2026
Knowable thourght full and able to communicate too.
- 5 out of 5 starsReviewed on 1/21/2026
Friendly and easy to talk to.
- 5 out of 5 starsReviewed on 1/16/2026
He knew what needed to be done.
- 5 out of 5 starsReviewed on 1/16/2026
Very pleasant person yes all the right questions and he asked me if I had any questions
- 5 out of 5 starsReviewed on 1/3/2026
I received all my answers and concerns
- 5 out of 5 starsReviewed on 12/14/2025
Very good at patient interaction
- 5 out of 5 starsReviewed on 11/28/2025
Dr. Lightheart is excellent.
- 5 out of 5 starsReviewed on 11/26/2025
The more I visit with him, the better I like and trust him.
- 5 out of 5 starsReviewed on 11/21/2025
I think he takes a very well rounded but conservative approach. I like that
- 5 out of 5 starsReviewed on 11/20/2025
Listened to my concerns and prescribed a plan for follow up.
- 4 out of 5 starsReviewed on 11/6/2025
Very thorough.
- No RatingReviewed on 10/31/2025
They have put a monitor on my chest for five days. I haven’t talked to the doctor yet no feedback on that at this time.