Dan Sun, MD
Cardiology
Piedmont Heart of Perimeter
6115 Peachtree Dunwoody Road, Suite 300
Sandy Springs, GA 30328 Directions
4.9 out of 5
974 verified ratings
974 Ratings, 378 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Mar 18, 2026
Dr. Sun is very thorough and professional. He is very clear and decisive about care and prevention strategies. At the same time Dr. is very approachable and personable. I have great confidence in his skills as a medical practitioner.
Mar 14, 2026
Great
Mar 6, 2026
Excellent Doctor
Feb 5, 2026
Listened to me and was very detailed.
Jan 31, 2026
Good man
Jan 31, 2026
Dr Sun is amazing. He has worked diligently to solve my dizziness and passing out issues. He took excellent care of me after my stints.
Jan 30, 2026
He listens to you, and is very help full when you talk to him.
Jan 29, 2026
Dr Sun is always very nice and thorough with his patients. I feel very comfortable and confident in his support and medical decisions. Thankful to have him as my heart Dr.
Jan 24, 2026
Very thorough.
Jan 23, 2026
Very caring - straight forward
Jan 22, 2026
Dr. Sun listens and explains well and is very thorough considering my diagnosis and lifestyle.
Jan 21, 2026
Great doctor, thorough, good bedside manner
Jan 21, 2026
He really stops and listens to your issues and explains clearly his plan for you care.
Jan 19, 2026
Dr. Sun was very professional, understanding, and caring. He took his time to listen to my needs and provided me woth very good feedback and instructions. I think he is great.
Jan 16, 2026
He is very concerned with improving my health and mentioned a cutting edge but basic option for treatment.
Jan 10, 2026
He was thorough, honest, and informative.
Jan 10, 2026
He is very nice and very helpful.
Jan 10, 2026
He's a wonderful physician, caring and explains things well.
Jan 9, 2026
Dr. Sun is fabulous, warm, cheerful, approachable. I feel i could discuss all my health issues with him abd he would take his time to listen carefully and be honest with me. I really have great trust in him
Dec 24, 2025
I didn't see dr sun. I had an ECHO. The technician was Good.
Nov 17, 2025
Straight to the point very welcoming and informative. I look forward in my next visit.
Nov 15, 2025
Very professional and takes time to answer any questions I have.
Oct 28, 2025
He is emphatic and was thorough. He explains well and answered my questions to my understanding and satisfaction. He also set the expectation on how long it will take to get my diagnosis well.
Oct 11, 2025
pleasant, respectable demeanor, clear questions and explanations.
Oct 10, 2025
Very good
Oct 7, 2025
Great doc.
Oct 7, 2025
Very patient, clear, and concise with future expectations stated.
Oct 7, 2025
He listens and takes his time explaining what is going on, he answers my questions and always makes me feel heard.
Sep 20, 2025
Pleasant,thorough,
Sep 19, 2025
Very caring, explains everything easy to understand no long wait
Sep 17, 2025
Very good!
Sep 17, 2025
Great Dr. Professional friendly knowledgeable. Alex the nurse was very good as well.
Sep 17, 2025
In the limited time given, he was thorough and very good. No complaints!
Sep 16, 2025
Nothing more. I am glad he is my doctor.
Sep 15, 2025
He a great doctor.
Cares about his patients.
Explained tests results thoroughly for patients to understand.
Very professional & the best
Sep 12, 2025
Dr Sun is incredible!! I knew the moment I met him I had the perfect Dr. He is so caring, and he spoke to me like I mattered. He listened to me and examined me and he came up with a plan. I am so confident in Dr Sun because he is a man of knowledge and experience. I look forward to my treatment.
Sep 12, 2025
Very kind and personable, professional.
Sep 10, 2025
I have confidence in him.
Sep 9, 2025
Great Doctor. Very caring and knowledgeable and understanding
Sep 9, 2025
He’s the best
Sep 4, 2025
Dr. Sun has a warm and friendly manner. We discussed my lab results and set personal goals. He answered any questions I had.
He was 30 minutes late for our appointment.
Sep 3, 2025
Dr. Sun is an excellent doctor. He gives clear recommendations and explains my medical challenges in simple terms. He cares about his patients.
Sep 3, 2025
Dr. Sun was very informative and has a great disposition and bedside manner.
Aug 28, 2025
I didn’t meet with Dr Sun this visit - just spoke with Renee and Scott during stress test and Stephanie during echo.
Aug 24, 2025
He was very thorough and explains everything
Aug 22, 2025
Always good to see him and he’s very thoughtful of my health.
Aug 22, 2025
He is so polite and caring and really wants to help me keep my heart healthy.
Aug 18, 2025
Dr Sun explained possible causes for my symptoms but also ordered an in-depth study of several tests to find the answers. I appreciate that he is so thorough and look forward to getting to the final answers.
Aug 18, 2025
He explains everything in detail which you can understand
Aug 7, 2025
Dr Sun treated me like was a close friend great to have a Doctor like that