Dr. Karl Sun, MD

Dr. Karl Sun, MD

Cardiology  ·  
Male  ·  
Age 60
Dr. Karl Sun, MD is a cardiology specialist in San Diego, CA and has been practicing for 23 years. He graduated from University of Zurich / Medical Faculty in 1982 and specializes in cardiology and internal medicine.

5555 Reservoir Dr Ste 112

San Diego, CA 92120

Contact Information

(619) 287-7060

Insurance Accepted

  • Aetna
  • Amerigroup (Wellpoint)
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • CareSource
  • Cigna
  • Commercial Insurance Company
  • 18 More

*Please verify this information when scheduling an appointment.

Learn about Dr. Sun

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Sun performs your care needs compared to other doctors.

Heart Palpitations
very high
more than 95% of peers
Chest Pain
very high
more than 92% of peers
Heart Disease
more than 88% of peers

Dr. Sun's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Care Philosophy

This content was provided by Dr. Sun "My goal is to provide the highest quality patient-centered care by promoting a culture of caring and empathy; educating my patients utilizing evidence-based practice. Secondary Specialties: Nuclear Cardiology; Internal Medicine"

2  Specialties

  • Cardiology
  • Internal Medicine

1  Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

41  Conditions Treated

  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Ectasia
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arrhythmias
  • Atrial Fibrillation
  • Atrial Flutter
  • Bradycardia
  • Cardiac Arrest
  • Cardiomegaly
  • Cardiomyopathy
  • Cardiovascular Disease
  • Carotid Artery Disease
  • Chest Pain
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Congenital Aortic Valve Disorders
  • Congestive Heart Failure
  • Coronary Artery Disease (CAD)
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Heart Murmur
  • Heart Palpitations
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Heart Disease
  • Hypotension
  • Limb Swelling
  • Limb Swelling Caused by Fluid Overload
  • Mitral Valve Disease
  • Mitral Valve Stenosis
  • Pericardial Disease
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Septal Defect
  • Syncope
  • Thrombosis
  • Tricuspid Valve Disease
  • Vascular Disease
  • Weight Loss
Read Less

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University of Zurich / Medical Faculty
    Medical School | Graduated 1982
  • The University of Texas at San Antonio
    Internship Hospital | Completed 1997
  • University of Texas San Antonio
    Residency Hospital | Completed 1999
  • Zurich University Hosp
    Residency Hospital | Completed 1989
  • UCLA Medical Center
    Fellowship Hospital | Completed 1995
  • University Hospital, Zurich
    Fellowship Hospital | Completed 1991

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
  • Society of Nuclear Medicine-Young Investigators Award, 1993
Media & Publications
  • Effects of dobutamine stimulation on myocardial blood flow, glucose metabolism, and wall motion in normal and dysfunctional myocardium., 1996 Dec
  • Compartment model for measuring myocardial oxygen consumption using [1-11C]acetate., 1997 Mar
  • Simultaneous measurement of myocardial oxygen consumption and blood flow using [1-carbon-11]acetate., 1998 Feb
  • Effects of exposure to altitude on men with coronary artery disease and impaired left ventricular function., 1998 Feb

Languages Spoken

  • English
  • Chinese, Cantonese
  • Chinese, Mandarin
  • German

Memberships & Professional Affiliations

Dr. Sun does not have any memberships or affiliations listed. If you are Dr. Sun and would like to add memberships or affiliations, please update your profile.

Dr. Sun's Reviews

Likelihood of recommending Dr. Sun to family and friends
8 total reviews (4 have comments)

Likelihood to Recommend (8)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Sun's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (4)

Dr. Sun has provided outstanding care to me over the last 5 years. His staff is also excellent and friendly.
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Dr. Sun is truly the best doctor I've ever had. He is knowledgeable, trustworthy and informative. He always responds promptly to my phone calls and his staff is on top of everything.
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I went to Dr. Sun to have a stress test on my heart as I have problems breathing he told me I have pulmonary hypertension, which I relayed to my pulmonary doctor that I have been seeing for eight years and my pulmonary doc did nothing I called Dr. Sun he told me to come in and he...more
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Dr. Sun is not only a great doctor but also very kind. He provides a high level of care for my 90 year-old mother and she trusts him implicitly. My mom was hospitalized for a heart condition about five years ago and after she met Dr. Sun and he was so kind to her, she immediately wanted him to be...more
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