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Dr. Mark Zaremba, MD

Dr. Mark Zaremba, MD

Cardiology*
45+ years of experience

Dr. Mark Zaremba, MD is a cardiologist in Laguna Hills, CA and has over 45 years of experience in the medical field. He graduated from Boston University in 1975. He is affiliated with medical facilities MemorialCare Saddleback Medical Center and Providence Mission Hospital Mission Viejo. He is accepting new patients.

3.5 Star Rating
Based on 11 reviews 3.5 Star Rating (11 reviews)

Mark S. Zaremba, MD

25401 Cabot Rd Ste 107 Laguna Hills, CA 92653
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Dr. Zaremba 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.
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  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions

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Dr. Zaremba's Reviews

Likelihood to recommend Dr. Zaremba

3.5
11 ratings, 4 with a written review
5 star
64%
64%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
36%
36%

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Missed diagnosis
I presented to Dr. Zaremba on annual follow-up for atrial fibrillation with a very slow heart rate. After echocardiogram and Holter monitor that did not show asystole or extra systole, he firmly denied that the bradycardia was clinically significant. Would not answer questions.I did not believe him a sought a second opinion.On second opinion it was determined that the medications for atrial fibrillation needed to be adjusted because with age they were causing a slow heart rate as a side effect.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Wait times
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
ARF – Jan 12, 2024
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I have been going to Dr. Zaremba for over 10 years. He is always kind and takes his time with me. He has monitored my heart condition with great care and knowledge. Everything is safe and clean for COVID visits. My only complaint, is the staffing at the front desk. Hopefully the new receptionist will grow into her position and become a great asset to his office. 12.7.2020
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
Kathy R. – Dec 08, 2020
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Very patient. Very thoughtful. Great Medical Assistant. Very informative. Amy. Windsor CT/Laguna Niguel
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Apr 06, 2019
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Bad bad bad Doctor. He only looks at you as $$$ in his pocket. He doesn't care for his patients.
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
8 others found this helpful
Helpful
Shirin in Lake Forest, CA – Sep 15, 2016
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About Me

biography

Dr. Mark Zaremba, MD is a cardiologist in Laguna Hills, CA and has over 45 years of experience in the medical field. He graduated from Boston University in 1975. He is affiliated with medical facilities MemorialCare Saddleback Medical Center and Providence Mission Hospital Mission Viejo. He is accepting new patients.

  • 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.

  • Boston University

    Medical School, 1975
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Cardiovascular Disease
- 
Internal Medicine
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.

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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Dr. Zaremba is a Healthgrades Choice provider in Cardiology

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    Locations

    Mark S. Zaremba, MD

    Mark S. Zaremba, MD25401 Cabot Rd Ste 107 Laguna Hills, CA 92653
    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

    • MemorialCare Saddleback Medical Center

      24451 Health Center Dr
      Laguna Hills, CA 92653
      Recipient of 25
      hospital awards

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

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

      Patient Safety Excellence Award™ (2025, 2024)

      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.

      86%
      Patients said they were given information about recovering at home

      2% higher than the national average

      77%
      Patients said that doctors 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

    Compare Dr. Mark Zaremba, MD with other Cardiologists near you

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