Dr. Oscar Zambrano, MD
Cardiology*•Male•Age 79
Cardiology*
Dr. Oscar Zambrano, MD is a cardiologist in Bell, CA. He specializes in Cardiology and Internal Medicine.

Practice
6513 Atlantic Ave Bell, CA 90201Accepting new patients
Hospital Highlight
Dr. Zambrano is affiliated with PIH Health Whittier Hospital Whittier, a highly rated and top awarded hospital for cardiology.
At a Glance
- Areas of ExpertiseDr. Zambrano specializes in the areas of Cardiovascular Disease & Internal Medicine. • See board certifications
- Practices at Top Hospital
- Hospital Satisfaction
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Dr. Zambrano's Reviews
Likelihood to recommend Dr. Zambrano
2.7
5 Star | 33% | 33% |
4 Star | 0% | 0% |
3 Star | 0% | 0% |
2 Star | 33% | 33% |
1 Star | 33% | 33% |
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Claim your profileOverall Patient Satisfaction
Likelihood of recommending Dr. Zambrano to family and friends is 2.6666667 out of 5
About Me
care philosophy
I am proud to be part of the Optum family of primary care doctors, specialists, and care teams focused on providing care for people ages 65+. At Optum, my team and I help you reach your personal health goals. We focus on your total well-being while...read moreCardiology
Internal Medicine
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Kaiser-permanente
Fellowship Hospital, 1976Berkshire Medical Center
Internship Hospital, 1973
Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.
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Locations
Practice
Affiliated Hospitals
- Recipient of 7
hospital awardsAmerica’s 50 Best Hospitals for Cardiac Surgery Award™ (2024, 2023)
Superior clinical outcomes in heart bypass surgery and heart valve surgery
View all awardsOutstanding Patient Experience Award™ (2024, 2023, 2022)
Superior clinical outcomes in heart bypass surgery and heart valve surgery
View all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
77%Patients said that doctors always listened to them and explained things well1% higher than the national average
- Recipient of 18
hospital awardsAmerica's 250 Best Hospitals Award™ (2025, 2024, 2023)
Top 5% in the nation for consistently delivering clinical quality
View all awardsPatient Safety Excellence Award™ (2025, 2024, 2023)
Top 5% in the nation for consistently delivering clinical quality
View all patient feedbackHow patients felt about the care they received at this hospital.
84%Patients said they were given information about recovering at home75%Patients said that nurses always listened to them and explained things well - Recipient of 1
hospital awardView all patient feedbackHow patients felt about the care they received at this hospital.
84%Patients said they were given information about recovering at home77%Patients said that nurses always listened to them and explained things well2% higher than the national average
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