Need a Trusted Cardiologist to Help You Take Control of Your Heart Health?

Cardiology care for Diamond Bar and the SGV/OC border

If chest pressure has been waking you up at night, if your smartwatch flagged an irregular rhythm during a Schabarum Park trail run, or if your internist in Diamond Bar told you it’s time to see a cardiologist — our LA Beverly Hills office sees cases like yours every week.

Most Diamond Bar patients we see at CACVI fall into two groups: working professionals in their 40s and 50s following up on a stress test their internist flagged, and retirees in The Country and Diamond Bar Country Estates who want to keep golfing without worrying about how their heart will hold up. Dr. Mehran J. Khorsandi and Dr. Moinakhtar Lala have performed more than 15,000 cardiac and vascular procedures across thirty-plus years. They walk through the echocardiogram with you in the room — not a fellow, not a PA — while you’re still there.

Find out the cause of your heart condition.

From the 91765 and 91789 ZIP codes our LA Beverly Hills office is roughly a 40-minute drive west on CA-60, faster off-peak. Most Diamond Bar patients pick a midday slot so they’re past the morning crawl through the City of Industry. In one visit we can run an in-office cardiac evaluation, EKG, and echocardiogram, then go through the findings before you leave. Conditions we treat regularly for Diamond Bar patients include coronary artery disease, atrial fibrillation (AFib), heart failure, aortic valve disease, and heart arrhythmia.

Schedule an appointment.

Diamond Bar Cardiac Specialists

For Diamond Bar, the practical question is which cardiology group you can actually get into without a six-week wait. Our Beverly Hills office holds same-week appointments for patients in 91765 and 91789 presenting with acute symptoms. Dr. Khorsandi or Dr. Lala reads every new Diamond Bar chart personally before your visit, which keeps the first half-hour focused on what’s actually new rather than re-reading the referral note.

Be prepared.

If you live in Diamond Bar and your heart rhythm goes wrong tonight, the closest emergency room is Pomona Valley Hospital Medical Center on North Garey Avenue — about 15 minutes east via CA-60 and CA-71 — with cath-lab capability for STEMI. That’s where 911 will most often route you, and you should not drive yourself.

Keeping a basic AED in larger homes in The Country or in a Diamond Bar HOA clubhouse pays for itself the one time it matters. Survival from sudden cardiac arrest drops roughly 10% for every minute without defibrillation. Once you’re stable, our Beverly Hills office handles the cardiology follow-up.

A first visit at our Beverly Hills office — about 40 minutes west of Diamond Bar via CA-60 — typically runs 60 to 90 minutes. We collect your history, the symptoms you’ve actually noticed, family history of early heart disease, and any current cardiac medications. Most Diamond Bar patients leave with an EKG and echocardiogram done the same day, and we order any blood work before you go. We send the visit summary back to your Diamond Bar primary care doctor within the week so your team stays in the loop.

Protect your heart.

Trust Your Heart to Our Expert Care

On average, someone dies of cardiovascular disease (CVD) every 37 seconds in the U.S. There are 2,353 deaths from CVD each day, based on 2017 data.

American Heart Association

High blood pressure, high blood cholesterol, and smoking are key risk factors for heart disease. About half of Americans (47%) have at least one of these three risk factors.

Centers for Disease Control and Prevention

Diamond Bar skews older and more affluent than the LA County average. That means we catch more coronary disease early enough for medical management — but it also means more of you are managing five or more cardiac medications by 65. Our job is to keep the regimen lean: confirm what’s actually needed, drop what isn’t, and check in twice a year so a statin-and-beta-blocker pair doesn’t quietly stack into a seven-drug pile.

CACVI’s experienced cardiologists are determined to provide each patient with experienced, compassionate care as they work diligently to improve your health.

Dr. Moinakhtar Lala and Dr. Mehran J. Khorsandi

Meet Your Diamond Bar Cardiologists

The Center for Advanced Cardiac and Vascular Interventions (CACVI) is led by Dr. Khorsandi and Dr. Lala, who have over thirty years of practice with over 15,000 vascular and cardiac procedures performed. Our physicians are determined to provide each patient with experienced, compassionate care as they work diligently to improve your health.

What our patients say

4.3 Based on 22 Google reviews

Michael Prae

A little blonde Russian woman named Natasha asked me to post about her renal procedure. It was done by Dr. Khorsandi at CACVI. They took absolutely amazing care of her and went above and beyond to treat her terribly high blood pressure. They lasered her renal artery. After the procedure it wouldn’t stop bleeding so they ended up staying w her at the center until 9pm. That’s when they finally had to call the ambulance to move her to E.R. All of the staff were incredibly professional and their care was second to none. Dr. Lala promised her that her high blood pressure would go away. It has and now she’s throwing out all her old med’s just like Lala promised. This group of Doctors is like no other. If you have any of these cardiac issues then you’ve found your saving grace. No need to look any further. They were incredibly patient and helpful in every medical way possible. Natasha has found a new way of living. Without her terrible pounding migraines she had on a daily basis. 5 stars all the way. They deserve all the praise possible. They provided a miracle. Thank you Dr’s Lala & Khorsandi.

3 weeks ago Tarzana Read on Google

Nick Derian

On behalf of my father, a patient of CACVI, I wanted to acknowledge and praise the entire team of this organization for its outstanding surgical expertise and knowledgeable/warm supporting staff. We had gone through countless recommendations that all claimed there was only one last option for treatment, amputation. That news is devastating for anyone to hear, and resulted in my father having little faith that the quality of his life would ever be the same... All that changed the moment we had our first interaction with this organization. The care, knowledge, and most importantly hope that there was still options if we acted fast was single moment that turned this entire nightmare around. Thank you CACVI for being the single most important piece to solving my father's health crisis. Dont think twice, make the appointment and atleast go meet and see them-- for us it was the moment that changed the trajectory of our situation forever for the better.

a month ago Tarzana Read on Google

Matt Golad

I’m 41 years old, and I have something called May-Thurner’s Syndrome. However, it wasn’t until I saw Dr. Vasim Lala a couple years ago that I was diagnosed with it. May-Thurner’s syndrome is when the main veins that split off into your legs is compressed by the main arteries that split off into your legs. The result is that the blood that should be coming back up through the leg veins pools at your ankles. My whole life until I was diagnosed, I was lethargic. My legs felt heavy. I started to develop purple bruising around my ankles in my twenties. I started to get varicose veins on my calves. I thought this was normal. I was living on “hard mode” and didn’t know it. If I was on my feet for extended periods of time, my legs would swell a lot. I thought maybe I need to lose some weight. When I started teaching a few years ago, I would be on my feet 6-8 hours a day. One day, I got home, and my left leg was so swollen my wife was concerned I had a blood clot. I went to the emergency room, and thankfully it was just superficial. I temporarily went on blood thinners and was recommended to see Dr. Lala. He changed my life. I’d shown my purpling ankles to GP’s. They’d seen my varicose veins. But none if them put all the signs together until I saw Dr. Lala. He diagnosed me with May-Thurner’s syndrome and recommend we put stents in my veins to prevent them from being compressed by the arteries. So we did the surgeries. Out patient procedures. My legs stopped swelling a lot. I started wearing compression socks. I had to be on blood thinners for a year, but eventually I was able to stop taking them which was great. But I still had varicose veins in my legs because they had widened from the blood pooling in them for years. I’ve had two ablations per leg since them, which closes the affected veins, and I’ve got a new lease on life. My legs feel lighter. They don’t swell nearly as much. The varicose veins have disappeared. Now, I’m lighter on my feet. I’m not lethargic. There’s a pep in my step. I have one more ablation each being scheduled. I’m thankful for Dr. Lala and his incredible team at CACVI for their diagnosis and treatment. It truly changed my life.

4 months ago Tarzana Read on Google

PAK SHIP ALL

On August 27, 2025, I had my leg Angio done with Dr. K. who is best of the best. Amazing Doctor and extremely knowledgeable. The nurse who helped me, JULIAN she has a very kind heart. She has a lot of knowledge and made me feel extremely relaxed. She went above and beyond her responsibilities. It seems God made her to be kind and caring for all the patients. I salute her and look forward to having same nurse for procedure in my other leg. I came home with a big Smile. Thank you Thank you Thank you

10 months ago Tarzana Read on Google

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Dr. M Lala, Dr. Mehran J. Khorsandi and Dr. V Lala

Meet Your Specialists

The Center for Advanced Cardiac and Vascular Interventions (CACVI) is led by Dr. M Lala, Dr. Khorsandi, and Dr. V Lala, who have over thirty years of practice with over 15,000 vascular and cardiac procedures performed. Our physicians are determined to provide each patient with experienced, compassionate care as they work diligently to improve your health.