Ponnandai Somasundar, MD

Associate Professor, Boston University Chobanian & Avedisian School of Medicine

Biography

Ponnandai Somasundar, MD, is Associate Chief of Surgical Oncology and Director of Geriatric Oncology at Roger Williams. He received his Fellowship training at Roger Williams Medical Center/Chobanian and Avedisian School of Medicine. After graduating from Madras Medical College, Dr. Somasundar completed residencies at Maimonides Medical Center in Brooklyn, New York,
and West Virginia University. Dr. Somasundar’s clinical expertise is in the areas of liver surgery, pancreas surgery, melanoma, thyroid cancer, colorectal surgery, HIPEC, and abdominal wall reconstruction.

Publications

  • Published 6/12/2026

    Morocho B, Lightfoot S, Somasundar P, Kwon S. Refining adjuvant therapy options in patients with stage II melanoma. Immunotherapy. 2026 Jun 12; 1-9. PMID: 42284107.

    Read at: PubMed

  • Published 6/3/2026

    Su AY, Koness J, Calvino AS, Somasundar P, Kwon S. Parotidectomy: 10-Year Experience in the Hands of Surgical Oncologists. J Surg Oncol. 2026 Jun 03. PMID: 42236664.

    Read at: PubMed

  • Published 5/21/2026

    Abu-Hashish H, Morocho B, Espat NJ, Somasundar P, Kwon S. Age-stratified impact of microsatellite instability on lymph node positivity and survival in stage I-III colon cancer. J Geriatr Oncol. 2026 May 21; 17(6):103008. PMID: 42166995.

    Read at: PubMed

  • Published 5/1/2026

    Morocho B, Lightfoot S, Somasundar P, Kwon S. ASO Visual Abstract: Trends and Outcomes of Liver-First Surgical Approach in Patients with Colorectal Cancer and Isolated Liver Metastases. Ann Surg Oncol. 2026 May; 33(5):3982-3983. PMID: 41772246.

    Read at: PubMed

  • Published 4/4/2026

    Talathi R, Hubbard RA, Somasundar P, Espat NJ, Kwon S. STRASS 2 target trial emulation: Bridging the gap between trial efficacy and real-world effectiveness. Surgery. 2026 Jun; 194:110187. PMID: 41936769.

    Read at: PubMed

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Websites

Education

  • University of Madras, MBBS
  • University of Massachusetts Amherst, MPH
  • Tamil Nadu Dr. M.G.R. Medical University, MS

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