Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Eric Castleman, MD, is a board-certified cardiologist and internist at COR Healthcare Medical Associates in Los Angeles. He currently sees patients at the practice’s locations in Torrance and Redondo Beach, California, where he brings more than 35 years of experience specializing in general cardiology, and adult congenital heart disease.
Dr. Castleman earned his medical degree at Mount Sinai School of Medicine in New York City before moving to California for his medical training. He completed his internal medicine residency at the University of California, Los Angeles (UCLA) Medical Center and a cardiology fellowship from UC Irvine Medical Center in Orange, California.
Dr. Castleman has many interests outside of work. He loves spending time with his wife, who is a nurse, and their four children. He loves gardening, traveling, and tinkering in the garage repairing things.
“I cannot say enough good things about my cardiologist Dr. Castleman. Heart disease runs in my family—my grandmother passed away at a young age, my mother has heart disease and a pacemaker, and I am living with mild heart failure myself. Having a doctor I trust completely is not optional—it’s essential.
Dr. Castleman has been both my cardiologist and my mom’s, and I truly believe we are in the best possible hands. He is incredibly knowledgeable and clearly brilliant at what he does, but what sets him apart is how much he genuinely cares. He’s honest, straightforward, and doesn’t sugarcoat things—but he delivers the truth with compassion, kindness, and respect.
He takes the time to listen, explains things clearly, and makes you feel seen and heard, not rushed or dismissed. His calm confidence and expertise bring real peace of mind in situations that can otherwise feel overwhelming.
I trust him wholeheartedly with both my health and my mother’s, and that trust means everything. If you’re looking for a cardiologist who is exceptionally skilled, deeply caring, and tells it like it is—this is the doctor you want.”
Dr. Eric Castleman, MD
Internist
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
4.92(241)
4.9
(326)
Dr. Matthew Ostrom, MD
Clinical Cardiac Electrophysiologist 9.0 mi
4.9(326)
1360 W. 6th St.
Ste. 315 North Building
San Pedro, CA 90732
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.
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