Dr. Arthur Loussararian, MD

Cardiology*MaleAge 60

Cardiology*

Dr. Arthur Loussararian, MD is a cardiologist in Mission Viejo, CA and has over 30 years of experience in the medical field. He graduated from University of California, Los Angeles David Geffen School of Medicine in 1991. He specializes in Cardiology.

Dr. Arthur Loussararian, MD

Mission Heritage Mission Viejo-Cardiology Suite 120

26800 Crown Valley Pkwy Ste 120 Mission Viejo, CA 92691
Telehealth availableTelehealth services available
Telehealth availableTelehealth services available
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Accepting new patients

Hospital Highlight

Dr. Loussararian is affiliated with Providence Mission Hospital Mission Viejo Mission Viejo, a highly rated and top awarded hospital for cardiology.

Dr. Loussararian is a Healthgrades Choice provider in Cardiology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Areas of Expertise
    Dr. Loussararian specializes in the areas of Cardiovascular Disease, Internal Medicine & Interventional Cardiology. See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    Patient Safety Excellence Award™ See hospitals

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Dr. Loussararian's Reviews

Likelihood to recommend Dr. Loussararian

4.4
19 ratings, 9 with a written review
5 star
79%
79%
4 star
5%
5%
3 star
0%
0%
2 star
5%
5%
1 star
11%
11%

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Horrible Experience
My primary care physician set this appointment for me, it was a routine Pre-Surgery cardio clearance ... I was scheduled for an orthopedic surgery after two weeks and this step Is the final clearance before the surgery ... I had an EKG done before my visit and it shows everything Is fine ... To my surprise this provider did not clear me for no reason and said that he want to do more testing, so he ordered a Nuclear Stress Test and a complete ECHO ... Of course to scheduled these testing It requires weeks In advance and of course results came back normal and still he did not clear me an order a third test which Is breathing test ... And of course I passed with flying colors since I did not suffer from any symptoms ... Due to the complexly and the time frame needed to order these testing my surgery got cancelled and now we are waiting to find another slot to open for my NEEDED surgery ... There In no explanation of why did he order all these tests which costing thousands of dollars and m
What went well
No results
What could be improved
No results
2 others found this helpful
Helpful
Mohamed Mostafa – Aug 30, 2023
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Great Doctor
Can't say enough about Dr.Lou, My father was his patient for 15 years. He is very detailed and professional. May come across as a very cold person but not at all. He is a very kind and caring Doctor. We are grateful for his care for my father up until his last days!
What went well
  • I felt respected
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Difficult to schedule appointment
Helpful
May 20, 2023
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This quiet, intelligent, informed and responsive interventionist cardiologist has been largely responsible for the fact that, after 20 years under his care, I continue to live a normal and enjoyable life in my 95th year. Dr Loussararian is an honor to his profession, and I give him my unqualified recommendation.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
William Connell – Nov 30, 2019
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Dr Loussararian did an excellent procedure on both lower legs opening up closed arteries. i came in from nevada where other drs were either unable or too risk adverse to do the surgeries. i was in extreme pain and my legs were very swollen and black and blue from the lack of blood flow. immediately after i was able to walk without pain where i was unable to previous.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
kerry kirson in henderson, NV – Feb 21, 2019
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I was first treated by Dr. Lou in 2004 when I was able to reach Mission Hospital’s Emergency Room while having a heart attack. There, Dr. Lou quickly and expertly cleared a heart valve blockage, installed a stent and thereby saved my life, extending it, as of this writing, by 14 years. Since then, Dr. Lou has continually improved the quality of my life by very accurately diagnosing and surgically resolving multiple vascular problems. Dr. Lou’s diagnostic and surgical skills are truly impressive.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
6 others found this helpful
Helpful
Paul M. in Laguna Niguel, CA – Jul 31, 2018
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14 years ago he saved my fathers life and extended it by 6 wonderful years. Now he’s done it again by directing my boyfriends care and saving his life. I will be forever grateful to Dr. Lou and his assistant, Billie, who’s is always there to answer my questions and peel me off the ceiling.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
5 others found this helpful
Helpful
Susie kimball in Mission Viejo, CA – Dec 04, 2017
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The office does not respond. My father is a patient andbit should not take multiple calls and faxes to have a simple form returned to another doctor.
What went well
  • Office environment
  • Explained conditions well
What could be improved
  • Difficult to schedule appointment
  • Staff wasn't friendly
  • Didn't trust the provider's decisions
6 others found this helpful
Helpful
Ladera Ranch, CA – Oct 23, 2017
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Saved my husbands life. Thank you for catching this in time.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Tammy Prentiss for Jeff Phipps in Irvine, CA – Oct 13, 2017
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Very thankful to have a caring doctor that is focused on my concerns and provides answers to my questions. Dr. Lou is very compassionate and thorough. His medical staff is also great to work with and demonstrates care for their patients. This is a excellent team.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 others found this helpful
Helpful
Ken Welch in Mission Viejo, CA – Mar 17, 2017
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About Me

care philosophy

One of the most rewarding things about being a cardiologist is that I have the opportunity to make a difference in people's lives.  I get tremendous gratification in seeing patients get through a difficult illness and return to a productive...read more
  • Cardiology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Harbor / Ucla

    Residency Hospital
  • Ucla

    Undergraduate School
  • University Of California, Los Angeles David Geffen School Of Medicine

    Medical School, 1991
American Board of Medical Specialties®
American Board of Internal Medicine®
Cardiovascular Disease
Internal Medicine
Interventional Cardiology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
  • English

  • Armenian

Dr. Loussararian is a Healthgrades Choice provider in Cardiology

    Read our methodology

    Locations

    Mission Heritage Mission Viejo-Cardiology Suite 120

    Mission Heritage Mission Viejo-Cardiology Suite 12026800 Crown Valley Pkwy Ste 120 Mission Viejo, CA 92691
    1

    Affiliated Hospitals

    • Providence Mission Hospital Mission Viejo

      27700 Medical Center Rd
      Mission Viejo, CA 92691
      Recipient of 5
      hospital awards

      Patient Safety Excellence Award™ (2025)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      Cardiac Surgery Excellence Award™ (2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      84%
      Patients said they were given information about recovering at home
      76%
      Patients said that nurses always listened to them and explained things well

      1% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality