John Hollowed, MD, FACC

Preventative & Interventional Cardiology Care

Prevention First. Advanced Coronary Care When Needed.

UCLA-trained interventional cardiologist with expertise in preventive cardiology, advanced coronary intervention, cardiogenic shock, and personalized cardiovascular care.

Practicing at Pacific Cardiovascular Associates in Orange County

Patient Reviews

⭐⭐⭐⭐⭐

241 Ratings | 149 Reviews

“Dr. Hollowed is an outstanding doctor who cares deeply for his patients. He makes himself readily available to talk to you about your concerns and is very supportive and understanding. I couldn’t have asked for a better doctor! He is amazing! So glad to be his patient!!.”

“Dr. Hollowed is the best. He is extremely knowledgeable, quite professional and very friendly. My family and I just love him”

“Awesome Doctor very good at what he does trust him with my life”

Why Patients Choose Dr. Hollowed

A man jogging on a paved path along the beach at sunset, with houses and palm trees in the background.

Prevention First

Identify risk early and help patients stay healthy for decades.

A desk with medical documents, including an open patient plan notebook, a photo print of a heart ultrasound, and two eye scans labeled with technical data. There is a stethoscope, three medical books about cardiology, a cup, and a potted plant near a window with sunlight.

Advanced Coronary Expertise

Complex PCI, IVUS, OCT, physiology-guided intervention, atherectomy, mechanical circulatory support (Impella, Balloon Pump), and calcium modification.

Wooden table with a cup of coffee, a notebook titled 'Q1 Meeting Notes' with a pen, a pamphlet titled 'STEMI Transfer Workflow,' a report with charts and graphs showing quality metrics, and a stack of medical journals related to cardiology.

Dedication to Quality Improvement

UCLA-trained physician, quality improvement leader, educator, and researcher.

Preventative Cardiology Emphasis

CT scan of the chest showing coronary arteries, with labels for right coronary artery, left main coronary artery, left anterior descending artery, and left circumflex artery, along with a table displaying calcium scores for each artery and the total score.

Laboratory report titled 'NMR Lipoprotein Results' for patient John Doe, showing lipid panel results, interpretation, and overall cardiovascular risk as lower risk. Includes measurements of LDL particle number, small LDL, LDL size, HDL particle number, lipoprotein(a), and insulin resistance score.

Person reviewing personalized nutrition plan on clipboard, surrounded by salad, almonds, water, green apple, and measuring tape.

Integrating CT coronary calcium testing, advanced lipid testing, as well as nutritional and weight loss counselling into the comprehensive risk profile allowing targeted preventative therapy.