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Cardiologists with Great Reviews in Upland, CA

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Verified Cardiologists in Upland, CA

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139 providers

Availability last updated 06/16/2026

Dr. Ramakrishna Reddy
4.88
(292)
Dr. Ramakrishna Reddy Cardiovascular Disease Physician
45.6 mi
4.88 (292)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Ramakrishna Reddy

Ram Reddy, MD, is board-certified in cardiology, nuclear cardiology, and internal medicine. With more than 38 years of experience, Dr. Reddy serves the Los Angeles communities of at COR Healthcare Medical Associates in Torrance and San Pedro, California,

Dr. Reddy graduated from Rangaraya Medical College, Dr. NTR University of Health Sciences, in Kakinada, India, in 1982. He completed an internship at Rajiv Gandhi Government General Hospital in Chennai, India, before relocating to the United States. Dr. Reddy moved to Detroit, Michigan, and completed his internal medicine residency at Wayne State University.

Passionate about his work, Dr. Reddy pursued additional education by completing cardiology and nuclear cardiology fellowships at the Medical College of Virginia in Richmond. He has treated a variety of cardiac cases ever since, including cardiac rehabilitation, heart attack, carotid ultrasound, hypertension, heart disease, and more.

When he is not working with patients at COR Healthcare Medical Associates, Dr. Reddy enjoys art, gardening, gourmet cooking, playing tennis, and spending time with his family.

Practice
COR Healthcare Medical Associates
Latest Review
“prompt and courtous”
Dr. Ramakrishna Reddy

Dr. Ramakrishna Reddy

Internist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.88 (292)
Dr. Gene Kim, MD
4.89
(339)
Dr. Gene Kim, MD Clinical Cardiac Electrophysiologist
45.6 mi
4.89 (339)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Gene Kim, MD

Gene Kim, MD, is a board-certified cardiologist at COR Healthcare Medical Associates in Los Angeles. At the practice’s locations in Torrance and Manhattan Beach, California, he treats patients of all ages and specializes in cardiac electrophysiology, general cardiology, interventional cardiology, and adult congenital heart disease.

Dr. Kim earned his medical degree at Brown University in Providence, Rhode Island, before moving to California to complete an internal medicine residency at Los Angeles County+USC Medical Center. Dr. Kim continued his advanced medical training with fellowships in cardiology at Harbor-UCLA Medical Center in West Carson, California, and cardiac electrophysiology at the Good Samaritan Hospital in Los Angeles and Harbor-UCLA Medical Center.

He maintains certification in both cardiovascular disease and clinical cardiac electrophysiology by the American Board of Internal Medicine. He is fluent in English and Korean.

When he’s not diagnosing and treating patients with heart issues, Dr. Kim and his wife enjoy spending time with their two young sons and participating in all types of sports.

Practice
COR Healthcare Medical Associates
Latest Review
“helpful and answers all questions you may have, friendly staff”
Dr. Gene Kim, MD

Dr. Gene Kim, MD

Cardiologist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.89 (339)
Dr. Matthew Ostrom, MD
4.89
(431)
Dr. Matthew Ostrom, MD Clinical Cardiac Electrophysiologist
45.6 mi
4.89 (431)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Matthew Ostrom, MD

A triple diplomate of the American Board of Internal Medicine, Matthew Ostrom, MD, is board-certified in clinical cardiac electrophysiology, cardiovascular disease, nuclear cardiology, and internal medicine. Dr. Ostrom, who has more than 15 years of experience, serves the Los Angeles communities of Torrance and Redondo Beach, California, at COR Healthcare Medical Associates.

Born and raised in Seattle, Dr. Ostrom received his Bachelor of Science in microbiology from the University of Washington in 1999. Throughout his undergraduate studies, Dr. Ostrom was actively involved in cardiovascular research at the university and at the local biotechnology company ZymoGenetics, Inc.

Shortly after graduating, Dr. Ostrom began his medical studies at Loyola University Chicago Stritch School of Medicine. He completed an internal medicine internship and residency through the University of California, Los Angeles (UCLA) system. In addition, Dr. Ostrom pursued cardiology and electrophysiology fellowships at Harbor-UCLA Medical Center in West Carson, California, and at Kaiser Permanente Los Angeles Medical Center in Los Angeles. He is a fellow of the American College of Cardiology and the Heart Rhythm Society. 

Today, Dr. Ostrom is a practicing electrophysiologist, specializing in catheter and device-based therapies in the treatment of complex arrhythmias, syncope, sudden cardiac death, and heart failure.

His research interests include the ablation of complex arrhythmias and device-based treatments for sudden cardiac death and congestive heart failure. Dr. Ostrom has authored or co-authored numerous articles in peer-reviewed cardiology and electrophysiology journals.

In addition to his work at COR Healthcare Medical Associates, Dr. Ostrom is on staff at Providence Little Company of Mary Medical Center and Torrance Memorial Medical Center.

Away from work, Dr. Ostrom loves spending time outdoors with his wife and children.

Practice
COR Healthcare Medical Associates
Latest Review
“Kind, thorough, understanding, thoughtful. Thank you, Betty Lou”
Dr. Matthew Ostrom, MD

Dr. Matthew Ostrom, MD

Cardiologist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.89 (431)
Dr. Ray Wyman, MD
4.85
(260)
Dr. Ray Wyman, MD Cardiologist
45.6 mi
4.85 (260)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Ray Wyman, MD

Ray Wyman, MD, is a board-certified cardiologist specializing in general cardiology, internal medicine, interventional cardiology, and adult congenital heart disease. An experienced cardiologist with more than 20 years in his field, Dr. Wyman serves the community of Los Angeles at COR Healthcare Medical Associates in Torrance, California.

Dr. Wyman earned his medical doctorate from Johns Hopkins University School of Medicine in Baltimore before completing his internal medicine residency at Johns Hopkins Hospital in the same city. Dr. Wyman developed an interest in cardiology early in his career and later completed dual cardiology fellowships through Boston’s Beth Israel Hospital and Harvard Medical School in Cambridge, Massachusetts.

In addition to heart disease and heart attack treatment, anticoagulation management, and high blood pressure treatment, Dr. Wyman performs ongoing research in coronary artery stenting.

Dr. Wyman has many interests and hobbies outside of work. When he isn’t spending time with his wife and four children, he loves playing outdoor sports and cooking gourmet meals at home.

Practice
COR Healthcare Medical Associates
Latest Review
“Dr Wyman is extraordinarily gifted in his field. I know I’m in the best hands under his care and patients from all over the country seek him for his wisdom in cardiac surgery.”
Dr. Ray Wyman, MD

Dr. Ray Wyman, MD

Cardiologist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.85 (260)
Dr. Wilson Kwan, MD
4.83
(130)
Dr. Wilson Kwan, MD Cardiovascular Disease Physician
45.6 mi
4.83 (130)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Wilson Kwan, MD

Wilson Kwan, MD, MS, is a board-certified internist and cardiologist at COR Healthcare Medical Associates. He specializes in general cardiology and advanced imaging. 

Dr. Kwan earned his medical doctorate at the Keck School of Medicine of USC. He completed his internal medicine residency and cardiovascular disease fellowship at LAC+USC Medical Center / Keck Hospital of USC. 

He has been certified by the American Board of Internal Medicine and Cardiovascular Disease in addition to subspecialty boards of Echocardiography, Cardiovascular CT, Nuclear Cardiology, and Vascular Interpretation. Dr. Kwan has authored multiple peer-reviewed publications in medical and basic science journals as well as contributed to several book chapters. 

Dr. Kwan is fluent in English and Mandarin and proficient in conversational Spanish. 

A SoCal native, Dr. Kwan enjoys fishing, freediving, tennis, basketball, and gardening. He is also an avid traveler and aspiring home chef. 

Practice
COR Healthcare Medical Associates
Latest Review
“Dr. Kwan answered all my questions, made excellent suggestions and was generous with his time.”
Dr. Wilson Kwan, MD

Dr. Wilson Kwan, MD

Internist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.83 (130)
Dr. Salman Azam, MD
4.82
(284)
Dr. Salman Azam, MD Cardiologist
45.6 mi
4.82 (284)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Salman Azam, MD

Salman Azam, MD, is a board-certified internist and cardiologist at COR Healthcare Medical Associates in Los Angeles. He currently sees patients at the Torrance and Redondo Beach, California, offices, where he specializes in structural heart disease and interventional cardiology diagnosis and treatment for patients of all ages.

Dr. Azam earned his medical degree from Wayne State University School of Medicine in Detroit, Michigan. After earning his medical degree, he moved to Colorado to complete an advanced interventional cardiology fellowship at the University of Colorado in Denver, and the Swedish Medical Center in Seattle, WA. 

To ensure he stays up-to-date with the latest advances in treatments, Dr. Azam is board-certified in internal medicine, cardiovascular disease, and interventional cardiology. For the convenience of his patients, Dr. Azam speaks Hindi and English.

When not treating patients at COR Healthcare Medical Associates, Dr. Azam enjoys spending time with his wife and young children, playing sports, and going to the beach.

Practice
COR Healthcare Medical Associates
Latest Review
“Good communicator!! Professional and caring!!”
Dr. Salman Azam, MD

Dr. Salman Azam, MD

Cardiologist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.82 (284)
Dr. Erol Kosar, MD
4.85
(363)
Dr. Erol Kosar, MD Clinical Cardiac Electrophysiologist
45.6 mi
4.85 (363)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
About Dr. Erol Kosar, MD

As a triple diplomate with the American Board, Erol Kosar, MD, holds board certifications in clinical cardiac electrophysiology, cardiovascular diseases, and internal medicine. At COR Healthcare Medical Associates in Los Angeles, Dr. Kosar proudly brings his 30 years of experience to patients of all ages at the practice’s location in Torrance, California.

He is also certified by the International Board of Heart Rhythm Examiners (IBHRE). 

After earning his medical doctorate at Sidney Kimmel Medical College, Thomas Jefferson University, in Philadelphia in 1989, Dr. Kosar completed an internal medicine internship and residency at the University of Pittsburgh in 1992. He later received additional training through a cardiology and electrophysiology fellowship at the University of Southern California (USC) in Los Angeles. After completing his fellowship, Dr. Kosar served as a full-time assistant professor of medicine at USC.

Continuing education is a top priority for Dr. Kosar, who is a Western regional trainer for excimer laser lead extraction — developed by Spectranetics® — which uses laser technology to remove permanent pacemaker lead.

Dr. Kosar is highly trained in all aspects of cardiology and cardiac electrophysiology, but his special research interests include cardiac resynchronization, sudden cardiac arrest, lead extraction, and atrial fibrillation.

As a leader in his field, Dr. Kosar has authored numerous publications in Circulation, Journal of the American College of Cardiology, and Cardiac Electrophysiology Review.

Not only does Dr. Kosar work with patients at COR Healthcare Medical Associates in San Pedro, CA, but he is also on staff at Providence Little Company of Mary Medical Center in Torrance, and Torrance Memorial Medical Center

Practice
COR Healthcare Medical Associates
Latest Review
“WONDERFUL Doctor! Deserves 10 stars!!”
Dr. Erol Kosar, MD

Dr. Erol Kosar, MD

Cardiologist

1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732

4.85 (363)
Healthcare specialist
Wisam Alfay Cardiovascular Disease Physician
45.7 mi
35470 Whitewood Road
Murrieta, CA 92563

Wisam Alfay

Internist

35470 Whitewood Road
Murrieta, CA 92563

Sinan Sarsam, MD
4.98
(1252)
Sinan Sarsam, MD Cardiologist
45.7 mi
4.98 (1252)
35470 Whitewood Road
Murrieta, CA 92563
About Sinan Sarsam, MD
Dr. Sarsam received his medical education at the University of Baghdad / College of Medicine in Iraq. Following the second Gulf War, he moved to the United States and attended the Wayne State University / Detroit Medical Center where he completed his Internal Medicine Residency. He then completed his fellowship in General and Interventional Cardiology at Michigan State University / Providence Providence-Park Hospitals in Detroit, MI. Dr. Sarsam also specializes in advanced heart failure.
Practice
SARSAM CARDIOLOGY A PROF CORP
Latest Review
“Very professional and efficient”
Sinan Sarsam, MD

Sinan Sarsam, MD

Cardiologist

35470 Whitewood Road
Murrieta, CA 92563

4.98 (1252)
Healthcare specialist
Dr. Jenica Thangathurai Internist
47.1 mi
2901 Wilshire Blvd
Suite 300
Santa Monica, CA 90403
About Dr. Jenica Thangathurai

At Commons Clinic, Dr. Ortega offers personalized cardiology care to adults in Santa Monica, California. Our mission is to prevent, diagnose, and manage heart disease through tailored treatment plans that prioritize your health and well-being.

Led by Dr. Ortega, a board-certified cardiologist specializing in preventive cardiology, our practice combines advanced technology with a patient-centered approach to deliver exceptional care.

Dr. Ortega earned a Bachelor of Science in Neurobiology, Physiology, and Behavior, with a minor in Spanish, from the University of California, Davis. She went on to pursue her Doctor of Medicine at the Keck School of Medicine of USC in Los Angeles, California, and completed her internship and residency. She served as chief resident at USC during her internal medicine residency and as chief cardiology fellow at Harbor-UCLA. 

She is board-certified in internal medicine and cardiovascular disease, with additional certifications in adult echocardiography and cardiovascular computed tomography. Dr. Ortega is an active member of the Alpha Omega Alpha Honor Medical Society and a recipient of multiple honors, including Physician of the Year at Harbor-UCLA and the Excellence in Primary Care Award from LAC+USC.

The practice of Jenica L. Ortega, MD, offers a full range of diagnostic and preventive services, including ECG/EKG, echocardiography, Holter monitoring, cardiac stress testing, and nuclear stress testing, as well as advanced imaging with CT angiography and calcium scoring. Our specialized programs in atrial fibrillation management, hypertension, lipid disorders, and heart attack prevention help you work proactively toward lasting heart health.

Recognizing the underserved cardiovascular needs of women, we also provide dedicated women’s heart health targeting changes throughout a woman's life, with targeted cardiovascular care around pregnancy, post-partum, the menopause transition, and beyond. Additionally, our preoperative risk assessments and comprehensive wellness evaluations ensure you receive tailored guidance for your anticipated outcomes.

To schedule your next appointment with Dr. Ortega, please use our online scheduler or contact our friendly staff today.

Practice
Jenica L. Ortega, MD

Dr. Jenica Thangathurai

Internist

2901 Wilshire Blvd
Suite 300
Santa Monica, CA 90403

Healthcare specialist
Dr. Candice Kim, MD Cardiovascular Disease Physician
47.5 mi
25395 Hancock Ave
Suite 230
Murrieta, CA 92562
About Dr. Candice Kim, MD

Candice Kim, MD, is a highly trained physician who is available to assist in all of your cardiology needs. She provides the best care possible to patients at Candice Kim Cardiology in Murrieta, California. 

Dr. Kim attended the University of California in Berkeley for her undergraduate studies, where she received her bachelor's degree in integrative biology. She then earned her medical degree at the University of Illinois Chicago.

Dr. Kim completed her internal medicine residency training at Cedars-Sinai Medical Center in Los Angeles, California. She went on to complete her cardiology fellowship at the University of Arizona, where she served as the chief cardiology fellow.

Dr. Kim is board-certified in internal medicine, cardiovascular disease, echocardiography, and nuclear cardiology. Her special interests include women’s heart disease, cardiac imaging, preventive cardiology, and heart failure.

Dr. Kim is currently accepting new and existing patients at his Murrieta, California, office. You can schedule an appointment today by phone or online.

Practice
Candice Kim Cardiology

Dr. Candice Kim, MD

Internist

25395 Hancock Ave
Suite 230
Murrieta, CA 92562

Healthcare specialist
Wisam Alfay Cardiovascular Disease Physician
47.6 mi
25500 Medical Center Drive
Murrieta, CA 92562

Wisam Alfay

Internist

25500 Medical Center Drive
Murrieta, CA 92562

Sinan Sarsam, MD
4.98
(1252)
Sinan Sarsam, MD Cardiologist
47.6 mi
4.98 (1252)
25500 Medical Center Drive
Murrieta, CA 92562
About Sinan Sarsam, MD
Dr. Sarsam received his medical education at the University of Baghdad / College of Medicine in Iraq. Following the second Gulf War, he moved to the United States and attended the Wayne State University / Detroit Medical Center where he completed his Internal Medicine Residency. He then completed his fellowship in General and Interventional Cardiology at Michigan State University / Providence Providence-Park Hospitals in Detroit, MI. Dr. Sarsam also specializes in advanced heart failure.
Practice
SARSAM CARDIOLOGY A PROF CORP
Latest Review
“Very professional and efficient”
Sinan Sarsam, MD

Sinan Sarsam, MD

Cardiologist

25500 Medical Center Drive
Murrieta, CA 92562

4.98 (1252)