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Dr Sebastian Kwon

Specialist Upper-GI & General Surgeon

Experienced Upper-GI and General Surgeon providing laparoscopic (“keyhole”) surgical care in the Hills District and Greater Western Sydney regions. Special interest in hernia, reflux and gallbladder surgery, as well as endoscopy.


Dr Sebastian Kwon completed his medical education (MBBS) at UNSW, graduating with Honours in 2001.  He then undertook training in General Surgery and became a Specialist in 2009 when he obtained his Fellowship of the Royal Australasian College of Surgeons (FRACS).

Dr Kwon then undertook an additional 3-years of sub-specialised training in Upper-GI and Bariatric Surgery with ANZGOSA, graduating in 2013, where he completed multiple surgical training fellowships domestically and abroad at leading training hospitals. These included completing Fellowships at John Hunter Hospital (Newcastle), St George Hospital (Sydney), Seoul National University Hospital (South Korea), Cancer Institute Hospital (Japan) and the Royal Victoria Infirmary (UK).

Dr Kwon specialises in laparoscopic (“keyhole”) minimally invasive surgery and adopts many pioneering technologies. He utilised the On-Q Pain Relief system with hernia surgery with reduced post-op pain and length of stay in hospital, and the tack-less mesh fixation technique with groin hernia repair to reduce incidence of post-surgical chronic pain. He also routinely uses Narrow Band Imaging and magnification in endoscopy, allowing for targeted biopsies.

Dr Kwon is a dedicated father of 5 children (and one in heaven) and enjoys playing tennis, swimming and fishing. He works as an Uber driver for his kids on weekends.

Areas of Expertise

Hernia Surgery: Abdominal (umbilical, incisional, vental, hiatal, etc) and groin (inguinal, femoral, etc) hernias.
Gastro-Oesophageal Reflux Disease (GORD): Anti-reflux surgery (fundoplication), complex hiatus hernia repair / paraesophageal hernia, Barrett’s Oesophagus surveillance.
Upper-GI: Heller myotomy for achalasia, splenectomy.
Gallbladder Surgery: Gallstone removal, Gallbladder removal (Cholecystectomy).
Endoscopy: Gastroscopy and colonoscopy (colorectal cancer screening).
General Surgery: Lumps and bumps, removal of lipoma, skin cancer excision.
Cancer Surgery: Radical D2 (extended lymphadenectomy) gastrectomy, resection of GIST (gastro-intestinal stromal tumours).


Accreditation with Gastroenterology Society of Australia for Gastroscopy and Colonoscopy (GESA) 2013
Fellowship of the Royal Australasian College of Surgeons (FRACS) 2009
Bachelor of Medicine & Bachelor of Surgery (MBBS), UNSW 2001
Bachelor of Science (Medicine), UNSW 2001

Professional Memberships

Australian New Zealand Gastro-Oesophageal Surgery Association (ANZGOSA)
Royal Australasian College of Surgeons (RACS)

Consulting Locations

Horsley Park

Operating Hospitals

Norwest Private Hospital Bella Vista, NSW
Nepean Private Hospital Kingswood, NSW
Minchinbury Community Hospital Rooty Hill, NSW
Lakeview Private Hospital Norwest, NSW
Healthwoods Endoscopy Centre Granville, NSW



  • May 2018

    Competitive grant awarded for “Enhanced participation in Bowel Cancer Screening Program by Korean Australians in NSW.” by Cancer Institute NSW. Grant activity: June 2019 – Aug 2019.


  • 2014

    Suh, Y. S., Han, D. S., Kong, S. H., Kwon, S., Shin, C. I., Kim, W. H., … & Yang, H. K. (2014).
    Laparoscopy-assisted pylorus-preserving gastrectomy is better than laparoscopy-assisted distal
    gastrectomy for middle-third early gastric cancer. Annals of surgery, 259(3), 485-493.

    Chan, D. L., Talbot, M. L., Chen, Z., & Kwon, S. C. M. (2014). Simultaneous ventral hernia
    repair in bariatric surgery. ANZ journal of surgery, 84(7-8), 581-583.

    Byun, J., Kwon, S., Oh, S. Y., Lee, K. G., Suh, Y. S., Kong, S. H., … & Lee, H. J. (2014).
    Laparoscopic management of hypertrophic hypersecretory gastropathy with protein loss: A case
    report. Asian journal of endoscopic surgery, 7(1), 48-51.

    Le Page, P. A., Kwon, S., Lord, S. J., & Lord, R. V. (2014). Esophageal Dysmotility After
    Laparoscopic Gastric Band Surgery. Obesity surgery, 24(4), 625-630

    Oh, S. Y., Kwon, S., Lee, K. G., Suh, Y. S., Choe, H. N., Kong, S. H., … & Yang, H. K. (2014).
    Outcomes of minimally invasive surgery for early gastric cancer are comparable with those for
    open surgery: analysis of 1,013 minimally invasive surgeries at a single institution. Surgical
    endoscopy, 28(3), 789-795.

  • 2013

    Yang, H.K, Kwon, S. (2013). Laparoscopic Gastric Surgery. In J.L. Cameron & A.M. Cameron
    (Eds.), Current Surgical Therapy: Expert Consult-Online. Elsevier Health Sciences.

    Kong SH, Suh YS, Kwon S. Lee HJ, Kim HH, Yang HK. (2013) Stable purse-string suturing
    using an anterior esophagotomy for reconstruction with a circular stapler during laparoscopic total
    gastrectomy. Asian J Endosc Surg. 6(2):82-9.

    Kwon, Y. H., Lee, K. G., Oh, S. Y., Kwon, S., Jang, M. Y., Cho, Y. M., … & Lee, H. J. (2013).
    Laparoscopic Sleeve Gastrectomy for Super Obese Patient: A Case Report. Journal of Metabolic
    and Bariatric Surgery, 2(1), 15-19.

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