
Bonnie Sun, MD
Breast Surgical OncologyBreast Surgery
Highlights
Age Groups Seen
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- Korean
- English
In-Network Plans
View All Accepted Plans (12)Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Bonnie Sun
Professional Titles
- Breast Surgery Clinical Associate
Primary Academic Title
Assistant Professor of Surgery
Johns Hopkins Physician
Background
Dr. Bonnie Sun is an assistant professor of surgery and breast surgeon at Suburban Hospital and a faculty member of Johns Hopkins School of Medicine. She practices in Washington, D.C. and Bethesda, MD as a Johns Hopkins Community Physician.
Dr. Sun has an expertise in breast cancer and is skilled in surgical techniques to improve cosmetic outcomes, such as nipple and skin sparing mastectomy, minimally invasive breast surgery and breast conservation with oncoplastic techniques.
Dr. Sun earned her medical degree from Pennsylvania State University College of Medicine. She completed a residency in general surgery, followed by a fellowship in breast surgery at University of Southern California Medical Center.
Dr. Sun is a fellow of the American College of Surgeons and a member of the Society of Surgical Oncology, the American Society of Breast Surgeons, the Association of Women Surgeons and the American Society of Clinical Oncology.
Dr. Sun has conducted research focusing on surgical treatment that improves clinical outcomes, long-term outcomes and postoperative quality of life, as well as clinical advancements in the practice of breast oncologic surgery. She has published numerous scientific papers in national peer-reviewed journals and presented at national meetings.
To support Dr. Sun's research, visit: https://secure.jhu.edu/form/BonnieSun
Locations
- Johns Hopkins Health Care & Surgery Center — Bethesda
- 6420 Rockledge Drive, Suite 4100, Bethesda, MD 20817
- Get Directions
- phone: 301-530-5151
- fax: 410-367-2751
Expertise
Education
- Fellowship: Keck School of Medicine of USC, Breast Surgery, 2012
- Residency: Keck School of Medicine of USC, General Surgery, 2011
- Medical Education: Penn State College of Medicine, MD, 2006
Board Certifications
- Surgery (General Surgery): American Board of Surgery, 2011
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.9 out of 5
178 ratings, 85 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 3/18/2026
I feel very comfortable with Dr Sun. She explained to me my options to make a choice.
- 5 out of 5 starsReviewed on 3/18/2026
Dr. Sun is wonderful , she is very smart and meticulous. I can feel she is also protective and wanting the best/safest outcome for me. I am healing well from the bilateral mastectomies .
- 5 out of 5 starsReviewed on 3/13/2026
This was my first visit with Dr. Sun. Her demeaner was most calming and reassuring. I have total confidence in her plan for my care.
- 5 out of 5 starsReviewed on 3/11/2026
She explained from day one about my care and set-up other care providers to continue my recovery. She is the best.
- 5 out of 5 starsReviewed on 3/11/2026
I trust Dr. Sun. I feel that she is knowledgeable, evidence-based and emphatic. Thank you.
- 5 out of 5 starsReviewed on 3/5/2026
Dr. Sun cares about her patients and explains in a way that is easy to understand.
- 5 out of 5 starsReviewed on 3/4/2026
Dr Bonnie Sun is a wonderful caring person, very calm and very intelligent.
- 5 out of 5 starsReviewed on 3/4/2026
Dr. Sun is professional and caring. My needs and concerns were heard.
- 5 out of 5 starsReviewed on 2/26/2026
Dr. Sun was very thorough in answering questions.
- 5 out of 5 starsReviewed on 2/26/2026
Personable and professional
- 5 out of 5 starsReviewed on 2/19/2026
Dr B. Sun besides being high-level medical expertise, she shows compassion, empathy and calmness. Amazing!
- 5 out of 5 starsReviewed on 2/18/2026
She is wonderful
- 5 out of 5 starsReviewed on 2/18/2026
Dr Sun explained carefully what my condition was and what approach she would take to ""fix"" it. She explained risks and what I needed to do on my part to ensure a successful recovery.
- 5 out of 5 starsReviewed on 2/12/2026
Dr explained things beautifully. She wax so thorough and organized
- 5 out of 5 starsReviewed on 2/11/2026
Dr Sun is outstanding
- 5 out of 5 starsReviewed on 2/11/2026
Dr. Sun considered all the information and scans provided. She then talked through the findings and next steps. She actually drew diagrams as she explained her approach, upcoming actions, and follow up care. She was very thorough and I am now very confident about the upcoming procedure.
- 5 out of 5 starsReviewed on 2/6/2026
Well I'm happy with a visit because it was on my last appointment thank you Jesus
- 5 out of 5 starsReviewed on 2/5/2026
Dr. Sun = excellent
- 5 out of 5 starsReviewed on 2/5/2026
Dr Bonnie Sun is a great person and understands me very well. She gave me a good Advice, Thank you Dr Bonnie Sun.
- 5 out of 5 starsReviewed on 2/4/2026
Dr. Sun has shown me utmost respect during my visits and subsequent surgery.
- 5 out of 5 starsReviewed on 1/22/2026
Very clear explanation of condition. Courteous and reassuring. Positive tone.
- 5 out of 5 starsReviewed on 1/22/2026
I am very pleased with Dr. Sun. She treated me with respect and explained everything very clearly and detailed. She listened to me and answered my questions.
- 5 out of 5 starsReviewed on 1/21/2026
Dr. Sun was very friendly and helpful during my visit.
- 5 out of 5 starsReviewed on 1/21/2026
Much more informative than previous consult. Gave options .
- 5 out of 5 starsReviewed on 1/16/2026
Expertise
- 5 out of 5 starsReviewed on 1/15/2026
She was very thorough, caring very bedside manner
- 5 out of 5 starsReviewed on 1/15/2026
Professional and careful
- 5 out of 5 starsReviewed on 1/14/2026
I felt immense gratitude and respect for Dr Sun. Thanks Dr Sun !
- 5 out of 5 starsReviewed on 1/14/2026
Dr. Sun explained everything clearly.
- 5 out of 5 starsReviewed on 1/9/2026
Very pleasant and informative. Felt very comfortable with you.
- 5 out of 5 starsReviewed on 1/8/2026
Dr. Sun was very friendly and professional, and explained my medical situation clearly. She also responded promptly to a question I submitted through MyChart.
- 4 out of 5 starsReviewed on 1/8/2026
Dr.Sun s very good . She explained all about my situation.
- 5 out of 5 starsReviewed on 1/7/2026
Very professional and confident. Satisfactorily answered questions I had
- 5 out of 5 starsReviewed on 1/7/2026
Dr Sun is excellent. She is very knowledgeable and caring. Excellent bedside manner. Highly recommend.
- 5 out of 5 starsReviewed on 1/7/2026
Very caring and personable
- 5 out of 5 starsReviewed on 1/2/2026
Dr.Sun is knowledgeable and compassionate about what she does. She took her time and explained the disease, the stage, and what to expect next. She was patient and caring. You can tell from her voice and demeanor that she just wants to do the right thing for the patient. The information she provided was explained well so patient can make the appropriate decision without feeling anxious
- 4 out of 5 starsReviewed on 12/31/2025
She is very knowledgeable and did a great job explaining how the cancer grows and the different treatment options.
- 5 out of 5 starsReviewed on 12/31/2025
Dr. Sun -- as I told her -- is indeed sunny. She is warm, friendly, and thoughtful -- but at the same time she is clear and direct and very clearly highly qualified and experienced.
- 5 out of 5 starsReviewed on 12/24/2025
She as personable and took time to explain all the information.
- 5 out of 5 starsReviewed on 12/17/2025
Dr Sun listened to my concern and thought of something that would make me feel better. She sent me home with extra supplies, tpp
- 5 out of 5 starsReviewed on 12/12/2025
Very pleasant, very direct and thorough.
- 5 out of 5 starsReviewed on 12/5/2025
Excellent stafff and Dr.
- 5 out of 5 starsReviewed on 12/4/2025
Dr. Sun was just terrific. Friendly and warm, very patient with my questions, very careful to provide me with all the information I might need.
- 5 out of 5 starsReviewed on 12/3/2025
Very caring, empathetic, thorough
- 5 out of 5 starsReviewed on 11/14/2025
Dr Sun is thoughtful and caring. You can tell she genuinely cares about her patients.
- 5 out of 5 starsReviewed on 11/14/2025
She was friendly, professional, and encouraging.
- 5 out of 5 starsReviewed on 11/13/2025
Dr Bonnie Sun is remarkable as far as her professionalism, compassion and excellence as surgeon. She performed my double mastectomy and did superior job. I was in the best hands possible.
- 5 out of 5 starsReviewed on 11/7/2025
Dr. Sun is a lovely doctor. She's personable, a skilled surgeon and I have the utmost confidence in her.
- 5 out of 5 starsReviewed on 11/6/2025
Excellent, empathetic, considerate, knowledgeable, confident and expert in her field
- 5 out of 5 starsReviewed on 11/6/2025
Dr. Sun was very pleasant and professional. She answered my questions thoroughly and provided the guidance I needed to help guide my decision making about the next step for my condition.
- 5 out of 5 starsReviewed on 10/29/2025
Dr. Sun is a very good Doctor. She made me feel better during the consultation. She explained all about the my situations.
- 5 out of 5 starsReviewed on 10/23/2025
Dr Sun was very knowledgeable and kind.
- 5 out of 5 starsReviewed on 10/23/2025
She spent a full hour with us, educating my husband and me about my breast cancer diagnosis and recommendations. Presented options and discussed them thoroughly.
- 5 out of 5 starsReviewed on 10/22/2025
Feel I was well cared for with full understanding of future surgery
- 5 out of 5 starsReviewed on 10/8/2025
Dr.Sun is one the best doctors I ever had! I would recommend her highly to everyone!!
- 5 out of 5 starsReviewed on 10/8/2025
Very detailed.
- 5 out of 5 starsReviewed on 10/2/2025
Dr Sun is amazing. She is thorough, she explains everything in detail, she spends a lot of time with you.
- 5 out of 5 starsReviewed on 10/2/2025
I feel so fortunate to have had my cancer surgery with someone as skilled and responsive as Dr. Sun.
- 5 out of 5 starsReviewed on 10/2/2025
Dr. Sun is the breast surgeon who performed a lumpectomy on me six years ago for a condition that I had. She was excellent then, so I called her office immediately to schedule an appointment with her upon the findings of a recent biopsy with more irregular cells.
- 5 out of 5 starsReviewed on 10/1/2025
I love the provider,explained all the information and surgery details.
- 5 out of 5 starsReviewed on 9/18/2025
Dr. Bonnie Sun is honest, knowledgeable, straightforward, respectful, sensitive, and kind.
- 5 out of 5 starsReviewed on 9/11/2025
I would highly recommend Dr. Bonnie Sun to anyone who is experiencing breast cancer.
- 5 out of 5 starsReviewed on 9/4/2025
I love and respect Dr. Sun.
- 5 out of 5 starsReviewed on 8/28/2025
Excellent, caring and professional. She's very easy to talk with and understand. She makes you feel very comfortable even though you are going through a terrible situation.
- 5 out of 5 starsReviewed on 8/28/2025
Very good
- 5 out of 5 starsReviewed on 8/13/2025
Dr. Sun is a awesome doctor
- 5 out of 5 starsReviewed on 7/31/2025
Excellent! Super caring, thorough, patient!
- 5 out of 5 starsReviewed on 7/30/2025
She listened and explained procedure in clear manner. She saw me!
- 5 out of 5 starsReviewed on 7/10/2025
Dr Sun was outstanding. I scheduled my surgery with her immediately after my meeting with her.
- 5 out of 5 starsReviewed on 7/3/2025
Dr. Sun was personable, kind, empathetic and clear and easy to understand. She was not rushed, and explained everything thoroughly.
- 5 out of 5 starsReviewed on 7/2/2025
Dr Sun is very nice and patient, thanks to her !
- 5 out of 5 starsReviewed on 6/19/2025
Excellent! Made me feel very comfortable.
- 5 out of 5 starsReviewed on 6/12/2025
She was kind, informative and helpful
- 5 out of 5 starsReviewed on 6/12/2025
Dr. Sun made me feel cared for and listened to. She presented the medical information in a manner that I could understand and follow.
- 5 out of 5 starsReviewed on 6/6/2025
Dr Sun was amazing and very helpful. She took an extra ordinary amount of time to make me feel comfortable and cared for
- 5 out of 5 starsReviewed on 6/5/2025
Very informative provided options going forward
- 5 out of 5 starsReviewed on 6/5/2025
Very personable and a wonderful listener
- 5 out of 5 starsReviewed on 5/23/2025
Dr. Bonnie Sun operated on my left breast to perform a mastectomy many years ago. She is an excellent surgeon.
- 5 out of 5 starsReviewed on 5/22/2025
She is excellent, and explained everything that I needed to know.
- 5 out of 5 starsReviewed on 5/16/2025
Very straightforward and clear concerning prognosis and what is needed moving forward. Calm and respectful and extremely attentive
- 5 out of 5 starsReviewed on 5/15/2025
Dr. Sun listened and answered my questions. Ordered the tests I needed. She could use more compassion towards her patients.
- 5 out of 5 starsReviewed on 4/17/2025
Excellent. Patient. Thorough.
- 5 out of 5 starsReviewed on 4/17/2025
Dr Sun is compassionate and a great educator giving info and details during a very frightening time. She made me feel confident and at ease.
- 5 out of 5 starsReviewed on 4/17/2025
Dr. Sun is exactly the type of sirgeon you would want for breast disease: knowledgeable,Kind, compassionate. I felt at ease as soon as she greeted me.
- 5 out of 5 starsReviewed on 4/17/2025
Dr. Sun is excellent. She spent over an hour explaining my breast cancer diagnosis and next steps. I couldn't have asked for a better experience.