


Dr. John Sunew, MD
Dr. John Sunew, MD is a cardiologist in Katy, TX and has over 30 years of experience in the medical field. Dr. Sunew has extensive experience in Adult Congenital Heart Conditions and Heart Conditions. He graduated from State University of New York Downstate Health Sciences University College of Medicine in 1994. He is affiliated with medical facilities such as Houston Methodist West Hospital and Memorial Hermann Katy Hospital. He is accepting new patients and telehealth appointments.
Memorial Katy Cardiology Associates
1331 W Grand Pkwy N Ste 130 Katy, TX 77493Compare with other Cardiologists
Compare Dr. Sunew with our nearby Cardiologists at North Cypress Medical Center.
Make an appointment at North Cypress Medical Center today at
(832) 669-3903.
Dr. Sunew 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
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Dr. Sunew's Reviews
Likelihood to recommend Dr. Sunew
5 star | 85% | 85% |
4 star | 0% | 0% |
3 star | 0% | 0% |
2 star | 0% | 0% |
1 star | 15% | 15% |
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- Appointment scheduling
- Staff friendliness
- I didn't feel respected
- Didn't listen or answer questions
- Didn't explain conditions well
- Appointment was rushed
- Didn't trust the provider's decisions
- Long wait times
- Office environment
- Appointment scheduling
- Listened & answered questions
- Explained conditions well
- Staff friendliness
- Appointment wasn't rushed
- Trusted the provider's decisions
- Wait times
- Office environment
- Appointment scheduling
- Listened & answered questions
- Explained conditions well
- Staff friendliness
- Appointment wasn't rushed
- Trusted the provider's decisions
Leave a review
How was your experience with Dr. Sunew?Overall Patient Satisfaction
Likelihood of recommending Dr. Sunew to family and friends is 4.3846154 out of 5
About Me
care philosophy
Dr. Sunew believes in providing effective, compassionate, high quality cardiovascular care to all his patients.biography
Dr. Sunew is listed among "Top Doctors 2017" in Houstonia Magazine and "Top Doctors 2016" in H Texas Magazine. He is triple board certified with Board certifications in Interventional Cardiology, Cardiovascular Disease and Nuclear Cardiology. ...read moreCardiology
Interventional Cardiology
Internal Medicine
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Northwestern University-interventional Cardiology
Fellowship Hospital, 2001George Washington University Medical Center-cardiology
Fellowship Hospital, 2000Mary Shields Eye Hospital|university Hospital
Residency Hospital, 1997State University Of New York Downstate Health Sciences University College Of Medicine
Medical School, 1994Amherst College
Undergraduate School, 1990
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.
Learn more about medical license public record checkThe Journal of Invasive Cardiology, Sept 2001
Catheterization and Cardiovascular Interventions, Oct 2000
Catheterization and Cardiovascular Interventions, Aug 2001
Dr. Sunew is a Healthgrades Choice provider in Cardiology
Iams Memorial Quality Leadership Award: Certificate of Recognition Gold Medal Winner - Operating Unit "Door to balloon time", 12/09/2010
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Locations
Memorial Katy Cardiology Associates
Practice
- Call
- Fax
- Hours
- Mon: 8:00am - 5:00pm
- Tue: 8:00am - 5:00pm
- Wed: 8:00am - 5:00pm
- Thu: 8:00am - 5:00pm
- Fri: 8:00am - 5:00pm
- Directions
Practice
- Call
- Fax
- Hours
- Mon: 8:00am - 5:00pm
- Tue: 8:00am - 5:00pm
- Wed: 8:00am - 5:00pm
- Thu: 8:00am - 5:00pm
- Fri: 8:00am - 5:00pm
- Directions
- Call
- Fax
- Hours
- Mon: 8:00am - 5:00pm
- Tue: 8:00am - 5:00pm
- Wed: 8:00am - 5:00pm
- Thu: 8:00am - 5:00pm
- Fri: 8:00am - 5:00pm
- Directions
Affiliated Hospitals
- Recipient of 9
hospital awardsView all awardsPatient 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 patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
79%Patients would recommend the hospital to friends and family14% higher than the national average
- Recipient of 2
hospital awardsView all awardsPatient 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 patient feedbackHow patients felt about the care they received at this hospital.
84%Patients said they were given information about recovering at home75%Patients said that doctors always listened to them and explained things well1% lower than the national average
- Recipient of 1
hospital awardView all awardsPatient Safety Excellence Award™ (2025)
Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications
View all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
73%Patients said that doctors always listened to them and explained things well3% lower than the national average
Compare with other Cardiologists
Compare Dr. Sunew with our nearby Cardiologists at North Cypress Medical Center.
Make an appointment at North Cypress Medical Center today at
(832) 669-3903.