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Bonnie Sun

Bonnie Sun, MD

Breast Surgical OncologyBreast Surgery

Accepting New Patients

Highlights

Age Groups Seen

  • Adolescent 13-17
  • Young Adult 18-25
  • Adult 26-64
  • Older Adult 65+

Languages

  • Korean
  • English

Gender

Female

Johns 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

Logo for 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, visithttps://secure.jhu.edu/form/BonnieSun

Locations

  1. Johns Hopkins Health Care & Surgery Center — Bethesda

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

Please contact the location directly to confirm your health plan is accepted.
Search plans
  • 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 reviews

The 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.

Overall Rating by Patient
Provider Listened Carefully
Provider Explained Things Clearly
Provider Knew Medical History
Provider Showed Respect
Provider Spent Enough Time
Search reviews
    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 3/11/2026

    I trust Dr. Sun. I feel that she is knowledgeable, evidence-based and emphatic. Thank you.

    5 out of 5 stars
    Reviewed on 3/5/2026

    Dr. Sun cares about her patients and explains in a way that is easy to understand.

    5 out of 5 stars
    Reviewed on 3/4/2026

    Dr Bonnie Sun is a wonderful caring person, very calm and very intelligent.

    5 out of 5 stars
    Reviewed on 3/4/2026

    Dr. Sun is professional and caring. My needs and concerns were heard.

    5 out of 5 stars
    Reviewed on 2/26/2026

    Dr. Sun was very thorough in answering questions.

    5 out of 5 stars
    Reviewed on 2/26/2026

    Personable and professional

    5 out of 5 stars
    Reviewed on 2/19/2026

    Dr B. Sun besides being high-level medical expertise, she shows compassion, empathy and calmness. Amazing!

    5 out of 5 stars
    Reviewed on 2/18/2026

    She is wonderful

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 2/12/2026

    Dr explained things beautifully. She wax so thorough and organized

    5 out of 5 stars
    Reviewed on 2/11/2026

    Dr Sun is outstanding

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 2/5/2026

    Dr. Sun = excellent

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 2/4/2026

    Dr. Sun has shown me utmost respect during my visits and subsequent surgery.

    5 out of 5 stars
    Reviewed on 1/22/2026

    Very clear explanation of condition. Courteous and reassuring. Positive tone.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 1/21/2026

    Dr. Sun was very friendly and helpful during my visit.

    5 out of 5 stars
    Reviewed on 1/21/2026

    Much more informative than previous consult. Gave options .

    5 out of 5 stars
    Reviewed on 1/16/2026

    Expertise

    5 out of 5 stars
    Reviewed on 1/15/2026

    She was very thorough, caring very bedside manner

    5 out of 5 stars
    Reviewed on 1/15/2026

    Professional and careful

    5 out of 5 stars
    Reviewed on 1/14/2026

    I felt immense gratitude and respect for Dr Sun. Thanks Dr Sun !

    5 out of 5 stars
    Reviewed on 1/14/2026

    Dr. Sun explained everything clearly.

    5 out of 5 stars
    Reviewed on 1/9/2026

    Very pleasant and informative. Felt very comfortable with you.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 1/8/2026

    Dr.Sun s very good . She explained all about my situation.

    5 out of 5 stars
    Reviewed on 1/7/2026

    Very professional and confident. Satisfactorily answered questions I had

    5 out of 5 stars
    Reviewed on 1/7/2026

    Dr Sun is excellent. She is very knowledgeable and caring. Excellent bedside manner. Highly recommend.

    5 out of 5 stars
    Reviewed on 1/7/2026

    Very caring and personable

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 12/24/2025

    She as personable and took time to explain all the information.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 12/12/2025

    Very pleasant, very direct and thorough.

    5 out of 5 stars
    Reviewed on 12/5/2025

    Excellent stafff and Dr.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 12/3/2025

    Very caring, empathetic, thorough

    5 out of 5 stars
    Reviewed on 11/14/2025

    Dr Sun is thoughtful and caring. You can tell she genuinely cares about her patients.

    5 out of 5 stars
    Reviewed on 11/14/2025

    She was friendly, professional, and encouraging.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 11/6/2025

    Excellent, empathetic, considerate, knowledgeable, confident and expert in her field

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 10/23/2025

    Dr Sun was very knowledgeable and kind.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 10/22/2025

    Feel I was well cared for with full understanding of future surgery

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 10/8/2025

    Very detailed.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 10/1/2025

    I love the provider,explained all the information and surgery details.

    5 out of 5 stars
    Reviewed on 9/18/2025

    Dr. Bonnie Sun is honest, knowledgeable, straightforward, respectful, sensitive, and kind.

    5 out of 5 stars
    Reviewed on 9/11/2025

    I would highly recommend Dr. Bonnie Sun to anyone who is experiencing breast cancer.

    5 out of 5 stars
    Reviewed on 9/4/2025

    I love and respect Dr. Sun.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 8/28/2025

    Very good

    5 out of 5 stars
    Reviewed on 8/13/2025

    Dr. Sun is a awesome doctor

    5 out of 5 stars
    Reviewed on 7/31/2025

    Excellent! Super caring, thorough, patient!

    5 out of 5 stars
    Reviewed on 7/30/2025

    She listened and explained procedure in clear manner. She saw me!

    5 out of 5 stars
    Reviewed on 7/10/2025

    Dr Sun was outstanding. I scheduled my surgery with her immediately after my meeting with her.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 7/2/2025

    Dr Sun is very nice and patient, thanks to her !

    5 out of 5 stars
    Reviewed on 6/19/2025

    Excellent! Made me feel very comfortable.

    5 out of 5 stars
    Reviewed on 6/12/2025

    She was kind, informative and helpful

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 6/5/2025

    Very informative provided options going forward

    5 out of 5 stars
    Reviewed on 6/5/2025

    Very personable and a wonderful listener

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 5/22/2025

    She is excellent, and explained everything that I needed to know.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 4/17/2025

    Excellent. Patient. Thorough.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed 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.