Siam Oottamasathien, MD, Urology, Boston, MA, Massachusetts General Hospital


Urology Boston, MA

Pediatric Urology

Associate Professor of Surgery, Harvard Medical School - Director of Pediatric Urology Basic Science Research

Dr. Oottamasathien is on Doximity

As a Doximity member you'll join over a million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. Oottamasathien's full profile

Already have an account?


  • Dr. Siam Oottamasathien is a pediatric urologist in Boston, MA and is affiliated with multiple hospitals in the area, including Massachusetts General Hospital and Tufts Floating Hospital for Children. He received his medical degree from the University of Colorado School of Medicine and completed his fellowship training from Vanderbilt University. He has been in practice 18 years.

Education & Training

  • Vanderbilt UniversityFellowship, Pediatric Urology, 2005 - 2007
  • University of ColoradoResidency, Urology, 2001 - 2005
  • University of ColoradoResidency, General Surgery, 1999 - 2001
  • University of Colorado Denver School of MedicineClass of 1999
  • University of ColoradoBA, Molecular Biology and Biochemistry, Magna Cum Laude, 1990 - 1993

Certifications & Licensure

  • ME State Medical License
    ME State Medical License 2020 - 2021
  • MA State Medical License
    MA State Medical License 2017 - 2022
  • UT State Medical License
    UT State Medical License 2007 - 2020
  • CO State Medical License
    CO State Medical License 2002 - 2005
  • American Board of Urology Urology
  • American Board of Urology Pediatric Urology

Awards, Honors, & Recognition

  • Early Career Investigator Representative Society of Pediatric Urology, 2013-2014
  • Second Place Honors American Urologic Association Early Career Investigators Forum, 2013
  • First Place Basic Science Prize American Academy of Pediatrics - Section on Urology, 2012
  • Join now to see all

Publications & Presentations


Journal Articles

  • Unilateral open extravesical ureteral reimplantation with contralateral dextronomer/hyaluronic acid injection performed as an outpatient therapy  
    Lau G, Anderson R, Cartwright P, Wallis MC, Schaeffer A, Oottamasathien S, Snow B, Journal of Pediatric Urology, 1/1/2018
  • Prevention of sinonasal inflammation by a synthetic glycosaminoglycan  
    Pulsipher A, Qin X, Thomas AJ, Prestwich GD, Oottamasathien S, Alt JA, International Forum Allergy Rhinology, 1/1/2017
  • Childhood cancer risk in the siblings and cousins of men with poor semen quality  
    Anderson RE, Hanson HA, Lowrance WT, Redshaw J, Oottamasathien S, Schaeffer A, Johnstone E, Aston KI, Carrell DT, Cartwright P, Smith KR, Hotaling JM, Journal of Urology, 1/1/2017
  • Join now to see all

Books/Book Chapters

  • Join now to see all


  • Silk-Elastinlike Polymers Enhance the Anti-inflammatory and Analgesic Properties of Semisynthetic Glycosaminoglycans.
    Oottamasathien S, American Urologic Association Annual Meeting, San Francisco, CA, 1/1/2018
  • Controlled Delivery of a Therapeutic Glycosaminoglycan for Amelioration of Radiation-Induced Proctitis-Associated Pain. (moderated poster and podium presentation - awa...
    Oottamasathien S, Institute of Biological Engineering Conference, Salt Lake City, UT, 1/1/2017
  • Localized Delivery of Semisynthetic Glycosaminoglycan Ethers via an Injectable Silk-Elastinlike Protein Polymer Matrix for Prevention of Radiation Induced Proctitis [A...
    Jensen MM, Isaacson KJ, Jia W, Cappello J, Oottamasathien S, Ghandehari H, NanoDDS Annual Nanomedicine and Drug Delivery Symposium, Baltimore, MD, 1/1/2016
  • Join now to see all


  • Thermoresponsive Biopolymers and Urologic Applications. 
    Snowbird, UT - 1/1/2019
  • Lower Urinary Tract Genitourinary Injuries. 
    Massachusetts General Hospital/Harvard Medical School - 1/1/2018
  • Inflammation Pathways. 
    Phoenix, AZ - 1/1/2016
  • Join now to see all


  • Pediatric Urology Handbook for residents and students rotating on the pediatric urology service. 
    Wallis MC, Oottamasathien S, Primary Children's Hospital
    Salt Lake City, UT

Grant Support

  • Localized Delivery of Glycosaminoglycan Ethers for the Treatment of Radiation-Induced ProctitisNational Institutes of Health - NCI2018–2023
  • Treatment of Bladder Pain by Novel Glycosaminoglycan DerivativesNational Institutes of Health - NIDDK2013–2015


  • Associate Section Editor, Journal of Urology - Editorial Board 2019 - Present
  • New England Section Representative, American Urologic Association - Research Council 2019 - Present

Professional Memberships

Hospital Affiliations