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Accepting New Patients

Celso L. Diaz, MD

Cardiology

Average rating: 5.0

| 258 ratings | 111 reviews

Star ratings are displayed only for those physicians who participate in UCLA Health’s patient experience survey program and have received a minimum of 30 survey responses.

Torrance Lomita Specialty Care |

3500 Lomita Boulevard, Suite M100, Torrance, CA 90505 US

310-517-8578

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What insurance is accepted?

Locations

Insurance

Reviews

Languages

English

Education

Medical Board Certifications

Cardiovascular Disease, American Board of Internal Medicine, 2023

Internal Medicine, American Board of Internal Medicine, 2020

Fellowship

Cardiovascular Disease, University of California, Los Angeles, 2023

Residency

Internal Medicine, McGaw Medical Center of Northwestern University, Feinberg School of Medicine, 2020

Degree

MD, UC San Francisco School of Medicine, 2017

Locations

South Bay

Torrance Lomita Specialty Care

Cardiology| Pain Medicine| Podiatry +5 more specialties

3500 Lomita Boulevard, Suite M100
Torrance, CA 90505 US

310-517-8578

Fax:310-517-8588

Location Details

Hospital Affiliations

Ronald Reagan UCLA Medical Center

757 Westwood Plaza
Los Angeles, CA 90095 US

Insurance

Aetna
Anthem Blue Cross
Blue Shield of California
Centivo
Cigna
First Health
Health Net of California
Interplan (part of HealthSmart)
Medicare Advantage
MultiPlan
UFCM Health System
Prime Health Services
Private Healthcare Systems (PHCS)
TRICARE
UnitedHealthcare

The list of health care plans above may not be comprehensive and could change.
Please contact your benefits coordinator or health insurance company directly to verify coverage.

Visit our health insurance information page for more details.

Reviews

Overall Rating:

5.0

Star ratings are displayed only for those physicians who participate in UCLA Health’s patient experience survey program and have received a minimum of 30 survey responses.

258 total ratings | 111 reviews

5.0

September 30, 2025

Excelent service I was well taken Care of

5.0

September 30, 2025

Excellent listener. Engaged and empathetic. Very professional- really one of the finest doctors I’ve met.

5.0

September 30, 2025

Met my expectation

5.0

September 29, 2025

Prompt to appt time. Thorough

5.0

September 12, 2025

Did not feel rushed. Took his time to discuss possible solutions.

5.0

September 10, 2025

Good

5.0

September 10, 2025

My doctor is always present and makes me feel heard

5.0

September 9, 2025

He was very easy to speak to and understand. Answered my questions clearly

5.0

September 9, 2025

He was very very concern about my health Very profesional Thank You

5.0

September 9, 2025

Excellent visit. The doctor explained everything thoroughly to me.

5.0

September 8, 2025

A technician doing a heart monitoring test noted an elevated heart rate and alerted my doctor. He has put me on two new medications. My doctor. Is very patient with me.

5.0

September 8, 2025

Excellent as always

5.0

September 5, 2025

Dr Diaz is always very attentive

5.0

August 27, 2025

Dr. Diaz was well informed of recent test results Very helpful discussing my prognosis and medications

5.0

August 25, 2025

Dr . Diaz, listens carefully & offers clarity when addressing a resolution for my concerns. He was quick to help & order further testing.

5.0

August 20, 2025

Dr Diaz was great.

5.0

August 20, 2025

He listens & is compassionate

5.0

August 20, 2025

I always have good experiences with Dr. Diaz.

5.0

August 18, 2025

Dr Diaz was very friendly and attentive. He asked pertinent questions and listened to my responses. We agreed to meet again in a year.

5.0

August 13, 2025

Dr Diaz is always wonderful. He is kind and always helpful. And always explains everything clearly to me.

5.0

August 13, 2025

Dr. Diaz took time to listen and explain things to me. He ensured my questions were answered

5.0

August 13, 2025

Listens well, doesn’t rush me

5.0

August 12, 2025

I love Dr Diaz. He's smart, helpful, listens and I know I'm in good hands

5.0

August 12, 2025

On time Answered all my questions. Explained things clearly

5.0

August 12, 2025

Everyone at the location are very welcoming and professional.

5.0

August 8, 2025

Comfortable, informative and built a solid game plan

5.0

August 6, 2025

Dr. Diaz is professional and kind. I feel that he truly cares about my well-being. He took the time to listen to me and answer my questions. I am very happy that he is my new cardiologist.

5.0

August 6, 2025

Dr. Diaz was timely, thorough and spot on with addressing all my concerns and explained all the next steps leaving me with no questions. The front office team was great and quick as well.

5.0

August 6, 2025

Engaged in my care, aware of the holistic approach of my team and letting this inform his insight and recommendation.

5.0

August 4, 2025

Excellent visit. I like Dr. Diaz and he was thorough and professional for my visit. Clearly, he cares about my health and recommended a new prescription to help with my condition.

5.0

August 4, 2025

Excellent discussion on future health care needs

5.0

August 1, 2025

In order to clear me for a colonoscopy, the doctor reviewed the EKG and vitals. He also examined my chest and back. This comprehensive examination gives me peace of mind.

5.0

July 29, 2025

Concerned and thorough about my health

5.0

July 25, 2025

He is very kind and wonderful and cares for his patients.

5.0

July 22, 2025

Did took time and explained

4.0

July 22, 2025

Dr. Diaz was very professional and answered all the questions we asked about my recent heart attack as well as treatments and next steps.

5.0

July 22, 2025

Compassionate

5.0

July 21, 2025

Got in early. Dr friendly. Answered questions and addressed concerns. Did not feel rushed.

5.0

July 21, 2025

First appointment. Doctor Diaz and staff are very friendly. Was seen quickly and not rushed

5.0

July 21, 2025

He explained very thoroughly so that I understood my test results

5.0

July 18, 2025

Knowledgeable, pleasant,easy to talk too.

5.0

July 18, 2025

Detailed and informative regarding the issues.

5.0

July 17, 2025

Dr. Diaz has a really good bedside manner. He answered all of our questions regarding my test. He made suggestions and talk them over with me.

5.0

July 17, 2025

Informative, pleasant manner. Very satisfied!

5.0

July 14, 2025

Dr. Diaz is personable, caring and professional. He always answers all my questions /concerns and makes me feel comfortable and heard.

5.0

July 13, 2025

Answered my questions, gave me good options

5.0

July 11, 2025

I had many questions for Dr Diaz . He was patient with me and explained how the heart works . He answered everything I asked. Good Work

5.0

July 11, 2025

Dr Diaz was Oustanding during our appointment.. He engaged me in a conversation about my test results and the path forward. We discussed my daily events, to get a deeper insight for the present results. Professional but friendly

5.0

July 11, 2025

Thorough, professional, personable. I feel like I get great care.

5.0

July 10, 2025

I felt respected, and valued as a patient, and above all the doctors expertise kept me well informed. He took time to go over my medication’s and give me advice about what to do going forward. He’s a wonderful doctor.

5.0

July 10, 2025

The doctor was prompt, courteous, caring, and very thorough. I felt he had my best interest for my health in mind and also listen to my concerns. I had a very good experience.

5.0

July 10, 2025

The staff was great and the wait was fast today. The Dr was pleased that we finally figured out the medication that has brought my blood pressure down. All was good

5.0

July 9, 2025

Conferred about results and steps still warranted. Nephrology getting involved to decide if I can handle contrast is per Dr Diaz directive and appreciated.

5.0

July 7, 2025

He was very informative and helpful.

5.0

July 7, 2025

Dr Diaz was very professional and responsive to my problem and the recommended treatment. Appointment was on time and efficient. Satisfied with the visit.

5.0

July 7, 2025

Wait time after check in and to see Dr was minimal and on time.

5.0

July 6, 2025

Dr. Diaz listens to you and answers all your questions. He is knowledgeable and is up-to-date with my care, meds, etc. His staff is professional and easy to work with.

5.0

July 2, 2025

Productive: Minimal wait time. Good communication w Doctor, tech, and student assistant. Follow up planning.

5.0

July 1, 2025

Dr Diaz was wonderful, very knowledgeable, and answered my questions. I felt he had excellent communication skills.

5.0

June 30, 2025

Dr. Diaz is an excellent physician. He takes time with his patient and explains treatments and other aspects of care very thoroughly and professionally always making sure the patient doesn’t have any questions and feels involved in the plan of care.

5.0

June 30, 2025

Dr Diaz was very thorough and recommended a heart monitor to check for arrhythmia.

5.0

June 27, 2025

Thorough, efficient and thoughtful

5.0

June 27, 2025

Efficient, caring and listens

5.0

June 25, 2025

Very understanding and listened to my concerns

5.0

June 24, 2025

very kind, professional, patient. Takes time to explain clearly and takes time to answer any questions or concerns.

5.0

June 24, 2025

Very thorough and patient

5.0

June 24, 2025

Good visit which addressed current health issues with some urgency. Recommended appropriate follow on actions.

5.0

June 23, 2025

Very professional and friendly

5.0

June 20, 2025

Dr Diaz is very knowledgeable and listens well. I’m comfortable with him and confident in him

5.0

June 17, 2025

I feel confident that Dr Diaz is following through to be sure that I’m ok

5.0

June 15, 2025

He is not giving up on trying to fine and answer to keep my high blood pressure down. I am in hopes that we can get here.

5.0

June 13, 2025

Answers questions

5.0

June 13, 2025

Attentive , personable , knowledgeable. Sense of humor.

5.0

June 13, 2025

on time, yo the oint. Dr dDiaz addressed his concerns and explained well. The Doctor listened to my heart and he reviewed past history. He discussed his plan going forward.

5.0

June 13, 2025

Dr Diaz was prepared, knowledgeable, responsive and reassuring,

5.0

June 13, 2025

I appreciate how the UCLA doctors and particularly Dr. Diaz listen to you and makes you feel heard

5.0

June 12, 2025

I’m a new patient of Dr Diaz and I can see he is thorough.

5.0

June 12, 2025

The doctor was patient and answered all questions where you could understand them. By this, I mean, he explained medical terms so that a person who was not in the medical field, could understand them.

5.0

June 11, 2025

Everything went well

5.0

June 11, 2025

It was a very good doctor visit. Very polite explains everything very well friendly very helpful receptionist very friendly and enjoy. Enjoy visit. Could not get any better.

5.0

June 10, 2025

Answered all my questions, clear on his recommendations

5.0

June 10, 2025

The cardio dept at UCLA seems to be a well run facility staffed by friendly and competent people. Dr Diaz answers all my questions and I feel confident with his treatment and advice.

5.0

June 9, 2025

Very kind and knowledgeable.

5.0

June 9, 2025

Very clear explanations of my treatment plan

5.0

June 6, 2025

Dr, Happy, good experience,

5.0

June 6, 2025

Went super good

5.0

May 27, 2025

It went efficiently and I was addressed as well as I could have expected.

5.0

May 16, 2025

The best

5.0

May 15, 2025

I felt comfortable, he answered my questions and he seemed knowledgeable.

5.0

May 14, 2025

Today was my first appointment with Dr. Diaz. He is a keeper! He addressed all of my concerns. I am comfortable with the tests that he ordered. I look forward to our next consultation.

5.0

May 14, 2025

Professional informative Good teacher

5.0

May 14, 2025

Fue muy buena gracias

5.0

May 12, 2025

Very helpful. Answered all questions. Very clear discussion and instructions. Appreciate the time and insights.

5.0

May 9, 2025

All my questions/concerns were addressed

5.0

May 6, 2025

Super nice and explains everything.

5.0

April 29, 2025

Dr. Diaz is very knowledgeable and professional. He was thorough and made sure to answer all questions.

5.0

April 28, 2025

He was quick and knowledgeable.

5.0

April 25, 2025

Dr Diaz came in prepared to chat, looked at MyChart before he met with us. Answered all our questions

5.0

April 25, 2025

Knowledgeable and concise. Considerate of all variables!

5.0

April 23, 2025

Dr Diaz is compassionate, empathetic and a good listener. He spent a good amount of time looking at my health and my concerns as i was extremely nervous and fearful. He is very professional and thorough and suggested a good path of action. I am so grateful.

5.0

April 23, 2025

Nice guy. Listens

5.0

April 22, 2025

Pleasant professional and clear.

5.0

April 21, 2025

He’s an outstanding physician. Takes his time, answers all my questions. Highly recommend him

5.0

April 17, 2025

Very responsive and concerned & knowledgeable

5.0

April 17, 2025

Quick fast and easy

5.0

April 15, 2025

Via video follow up visit. All went well

5.0

April 10, 2025

Very thorough with my visit today.

5.0

April 9, 2025

Cardiologist appointment for first time, Dr Diaz had read my pertinent data and that allowed for an informed start to our work. He listened to my insight and history and gave input as well as decisions for future clinical labs.

5.0

April 8, 2025

My usual doctor is on vacation this week so I saw Dr. Celso Diaz. He was patient and listened well. He also explained things well regarding medication and what he was going to do today in terms of testing.

5.0

April 7, 2025

The doctor and staff were friendly and efficient. The doctor listened to what I had to say.

5.0

April 4, 2025

They went over my stress test and did an EKG test on me right away. They showed me how concerned they were.

Celso L. Diaz, MD

Languages

Education

Medical Board Certifications

Fellowship

Residency

Degree

Locations

Torrance Lomita Specialty Care

Hospital Affiliations

Ronald Reagan UCLA Medical Center

Insurance

Reviews

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