
Dr. Asada Methasate
Surgical Gastroenterologist
- Dr. Asada Methasate is a respected Surgical Gastroenterologist with +32 years of experience in the field of GI surgeries and performing colonoscopy.
- He completed his MD in 1989 from the Tokyo Medical and Dental University and then did his 1994 did a diploma from the Japanese Board of General Surgery. In 1996, he did a diploma from the Japanese Sub-Board of Gastroenterological Surgery, followed by a certification in diagnostic and therapeutic endoscopy.
- Dr. Methasate performs adrenalectomy, appendectomy, bariatric surgery, cholecystectomy, colo-rectal surgery, foregut surgery, hiatal hernia repair, nephrectomy, pancreatic surgery, retroperitnoeum surgery, and splenectomy.
- Findings from his surgical practice can be found in some of the published papers of Dr. Methasate.
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- Dr. Asada Methasate is a respected Surgical Gastroenterologist with +32 years of experience in the field of GI surgeries and performing colonoscopy.
- He completed his MD in 1989 from the Tokyo Medical and Dental University and then did his 1994 did a diploma from the Japanese Board of General Surgery. In 1996, he did a diploma from the Japanese Sub-Board of Gastroenterological Surgery, followed by a certification in diagnostic and therapeutic endoscopy.
- Dr. Methasate performs adrenalectomy, appendectomy, bariatric surgery, cholecystectomy, colo-rectal surgery, foregut surgery, hiatal hernia repair, nephrectomy, pancreatic surgery, retroperitnoeum surgery, and splenectomy.
- Findings from his surgical practice can be found in some of the published papers of Dr. Methasate.

Dr. Boonlert Imraporn
Surgical Gastroenterologist
- Dr. Boonlert Imraporn is one of the best Surgical Gastroenterologists in Thailand, having 23 years of experience in this field.
- His areas of expertise include Hepatology, Abdominal Pain, Crohn's Disease, Inflammatory Bowel Diseases, Pancreatitis and Motility.
- He completed his MD, Faculty of Medicine from Chulalongkorn University, in 1999 and Clinical Gastroenterology Fellowship from Chulalongkorn University, in 2009.
- In 2009, he received a Master's degree of Science from Chulalongkorn University and Certificate training in Gastroenterology from the University of Michigan Health System, Ann Arbor, Michigan, USA.
- He also received a certificate training in High-resolution manometry and Motility disorder from Cedars Sinai Hospital, LA, California, USA, in 2012.
- He is an active member of The Royal College of Physicians of Thailand (RCPT).
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- Dr. Boonlert Imraporn is one of the best Surgical Gastroenterologists in Thailand, having 23 years of experience in this field.
- His areas of expertise include Hepatology, Abdominal Pain, Crohn's Disease, Inflammatory Bowel Diseases, Pancreatitis and Motility.
- He completed his MD, Faculty of Medicine from Chulalongkorn University, in 1999 and Clinical Gastroenterology Fellowship from Chulalongkorn University, in 2009.
- In 2009, he received a Master's degree of Science from Chulalongkorn University and Certificate training in Gastroenterology from the University of Michigan Health System, Ann Arbor, Michigan, USA.
- He also received a certificate training in High-resolution manometry and Motility disorder from Cedars Sinai Hospital, LA, California, USA, in 2012.
- He is an active member of The Royal College of Physicians of Thailand (RCPT).

Dr. Sukprasert Jutaghokiat
Surgical Gastroenterologist
- Dr. Sukprasert Jutaghokiat is one of the renowned Gastroenterologists and Hepatologists in Bangkok, Thailand.
- He has 24 years of experience in his field.
- He completed his MD, Faculty of Medicine, from Chulalongkorn University, in 1998 and has a board certification of the Thai Board of Medicine, Chulalongkorn University in 2004.
- In 2009, he gained a Fellowship in Clinical Gastroenterology and a Master's degree in Science from Chulalongkorn University.
- He did a certificate training in Gastroenterology from the University of Michigan Health System, Ann Arbor, Michigan, USA, in 2009.
- After that, he did training in high-resolution esophageal and anorectal manometry and gastrointestinal motility disorder at Cedars-Sinai Medical Center, Los Angeles, CA, USA, in 2012.
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- Dr. Sukprasert Jutaghokiat is one of the renowned Gastroenterologists and Hepatologists in Bangkok, Thailand.
- He has 24 years of experience in his field.
- He completed his MD, Faculty of Medicine, from Chulalongkorn University, in 1998 and has a board certification of the Thai Board of Medicine, Chulalongkorn University in 2004.
- In 2009, he gained a Fellowship in Clinical Gastroenterology and a Master's degree in Science from Chulalongkorn University.
- He did a certificate training in Gastroenterology from the University of Michigan Health System, Ann Arbor, Michigan, USA, in 2009.
- After that, he did training in high-resolution esophageal and anorectal manometry and gastrointestinal motility disorder at Cedars-Sinai Medical Center, Los Angeles, CA, USA, in 2012.

Dr. Pitulak Aswakul
Surgical Gastroenterologist
- Dr. Pitulak Aswakul is a leading and an experienced General Surgeon with a practice of +25 years.
- She completed her MD in 1996 from the Khon Kaen University, Thailand and then did a graduate diploma in 1998. In 2000 she studied internal medicine at the Thai Board of Internal Medicine. In 2005, she earned a board certification from the Thai Sub Board of Gastroenterology while studying at the Siriraj Hospital, Mahidol University, Thailand. In 2011, she earned a certificate in advanced endoscopy from the Siriraj Hospital, Mahidol University, Thailand.
- Dr. Aswakul is a specialised surgeon with specialised focus on laparoscopic surgeries for bile duct stones, does liver resection, and also does pancreatic gastrostomy. She particularly treats liver diseases, colorectal diseases with surgery too. She also performs endoscopies.
- She has co-authored a few research papers on the surgical and clinical aspects of her field of expertise.
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- Dr. Pitulak Aswakul is a leading and an experienced General Surgeon with a practice of +25 years.
- She completed her MD in 1996 from the Khon Kaen University, Thailand and then did a graduate diploma in 1998. In 2000 she studied internal medicine at the Thai Board of Internal Medicine. In 2005, she earned a board certification from the Thai Sub Board of Gastroenterology while studying at the Siriraj Hospital, Mahidol University, Thailand. In 2011, she earned a certificate in advanced endoscopy from the Siriraj Hospital, Mahidol University, Thailand.
- Dr. Aswakul is a specialised surgeon with specialised focus on laparoscopic surgeries for bile duct stones, does liver resection, and also does pancreatic gastrostomy. She particularly treats liver diseases, colorectal diseases with surgery too. She also performs endoscopies.
- She has co-authored a few research papers on the surgical and clinical aspects of her field of expertise.
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Dr. Chingyiam Panjapiyakul
Colorectal Surgeon
- Dr. Chingyiam Panjapiyakul is a well-known Laparoscopic Colo-Rectal Surgeon with +21 years of experience in performing MIS of the abdominal and the GI region.
- He is a highly qualified surgeon who pursued advanced medical training in Malaysia, Switzerland and Austria. After earning his MD in 1980 from Ramathibodi Hospital, Mahidol University he did a diploma in 1986 from the Thai Board of General Surgery. In 1991, he earned a certification in 'stapled haemorrhoidectomy and Starr procedure'. in Malaysia. His other major academic milestone was completing a fellowship in laparoscopic and endoscopic surgery in the University of Innsbruck, Austria. Till 2004 he also did two certifications in colorectal surgery in 1994 and bariatrics in 2004.
- Before his MD he did a certification from the International Society of Surgery, Switzerland and a degree in medical science too in 1978.
- Dr. Panjapiyakul is an expert laparoscopic surgeon with specialised focus on surgically treating patients that need colo-rectal surgeries. He is particularly sought to perform abdominal surgery and cholecystectomy. Some of the other procedures he performs are, colectomy, colostomy, hemorrhoidectomy, internal sphincterotomy and rectoprexy among a few other procedures.
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- Dr. Chingyiam Panjapiyakul is a well-known Laparoscopic Colo-Rectal Surgeon with +21 years of experience in performing MIS of the abdominal and the GI region.
- He is a highly qualified surgeon who pursued advanced medical training in Malaysia, Switzerland and Austria. After earning his MD in 1980 from Ramathibodi Hospital, Mahidol University he did a diploma in 1986 from the Thai Board of General Surgery. In 1991, he earned a certification in 'stapled haemorrhoidectomy and Starr procedure'. in Malaysia. His other major academic milestone was completing a fellowship in laparoscopic and endoscopic surgery in the University of Innsbruck, Austria. Till 2004 he also did two certifications in colorectal surgery in 1994 and bariatrics in 2004.
- Before his MD he did a certification from the International Society of Surgery, Switzerland and a degree in medical science too in 1978.
- Dr. Panjapiyakul is an expert laparoscopic surgeon with specialised focus on surgically treating patients that need colo-rectal surgeries. He is particularly sought to perform abdominal surgery and cholecystectomy. Some of the other procedures he performs are, colectomy, colostomy, hemorrhoidectomy, internal sphincterotomy and rectoprexy among a few other procedures.

Dr. Charlie Laohapand
Medical Gastroenterologist
- Dr. Charlie Laohapand is one of the leading Gastroenterologists in Bangkok, Thailand.
- He has been practicing for the past 14 years.
- His expertise lies in the treatment of Viral hepatitis, Liver Diseases, and Cirrhosis.
- He completed his MD Faculty of Medicine from Siriraj Hospital, Mahidol University, Thailand, in 2008.
- After that, he did Diploma of Thai Board of Internal Medicine. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2014 and Diploma of Thai Sub Board of Gastroenterology. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2016.
- He speaks English and Thai.
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- Dr. Charlie Laohapand is one of the leading Gastroenterologists in Bangkok, Thailand.
- He has been practicing for the past 14 years.
- His expertise lies in the treatment of Viral hepatitis, Liver Diseases, and Cirrhosis.
- He completed his MD Faculty of Medicine from Siriraj Hospital, Mahidol University, Thailand, in 2008.
- After that, he did Diploma of Thai Board of Internal Medicine. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2014 and Diploma of Thai Sub Board of Gastroenterology. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2016.
- He speaks English and Thai.

Dr. Aroon Siripun
Medical Gastroenterologist
- Dr. Aroon Siripun has nearly 18 years of clinical experience as a Medical Gastroenterologist.
- He is focused on Gastroenterology, Hepatology and Internal Medicine.
- He is a member of the Thai Medical Council.
- Dr. Aroon Siripun has completed MD (2002) from Chiang Mai University, Thailand.
- He has been trained in Internal Medicine (2008) and Gastroenterology (2010) from Rajavithi Hospital, Thailand.
- He has been trained in Advanced Therapeutic Endoscopy (2014) at Prince of Songkla University, Thailand.
- He practised Gastroenterology (2013) at Nagoya University Graduate school of Medicine, Japan.
- He enrolled in EUS Program (2014) at BIDS - Baldota Institute of Digestive Sciences, India.
- Dr. Aroon Siripun is well-versed in English, Japanese and Thai.
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- Dr. Aroon Siripun has nearly 18 years of clinical experience as a Medical Gastroenterologist.
- He is focused on Gastroenterology, Hepatology and Internal Medicine.
- He is a member of the Thai Medical Council.
- Dr. Aroon Siripun has completed MD (2002) from Chiang Mai University, Thailand.
- He has been trained in Internal Medicine (2008) and Gastroenterology (2010) from Rajavithi Hospital, Thailand.
- He has been trained in Advanced Therapeutic Endoscopy (2014) at Prince of Songkla University, Thailand.
- He practised Gastroenterology (2013) at Nagoya University Graduate school of Medicine, Japan.
- He enrolled in EUS Program (2014) at BIDS - Baldota Institute of Digestive Sciences, India.
- Dr. Aroon Siripun is well-versed in English, Japanese and Thai.

Dr. Rewat Boonanuwat
Medical Gastroenterologist
- Dr. Rewat Boonanuwat is one of the renowned Gastroenterologists having 14 years of experience.
- His areas of expertise are the digestive system and liver disease treatment.
- After completing his MD with first class honours from Siriraj Hospital, Mahidol University, Thailand, in 2008, he did Diploma of Thai Board of Internal Medicine., Thailand, in 2014, and Diploma of Thai Sub Board of Gastroenterology., Thailand, in 2016.
- He speaks Thai and English.
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- Dr. Rewat Boonanuwat is one of the renowned Gastroenterologists having 14 years of experience.
- His areas of expertise are the digestive system and liver disease treatment.
- After completing his MD with first class honours from Siriraj Hospital, Mahidol University, Thailand, in 2008, he did Diploma of Thai Board of Internal Medicine., Thailand, in 2014, and Diploma of Thai Sub Board of Gastroenterology., Thailand, in 2016.
- He speaks Thai and English.

Dr. Nathavut Sirimontaporn
Medical Gastroenterologist
- Dr. Nathavut Sirimontaporn is a prominent Gastroenterologist with over 24+ of experience in the medical field.
- He specializes in diagnosing and treating disorders related to the gastrointestinal tract and liver.
- His areas of expertise are treating Liver Diseases, Colonoscopy, Colorectal, Endoscopy, etc.
- He has various board certifications including a Diploma of the Thai Board of Internal Medicine, The Medical Council of Thailand, 2005, and a Diploma of the Thai Sub Board of Gastroenterology and Hepatology, 2009.
- He is proficient in various dialects mainly English, Thai, and Teo Chew.
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- Dr. Nathavut Sirimontaporn is a prominent Gastroenterologist with over 24+ of experience in the medical field.
- He specializes in diagnosing and treating disorders related to the gastrointestinal tract and liver.
- His areas of expertise are treating Liver Diseases, Colonoscopy, Colorectal, Endoscopy, etc.
- He has various board certifications including a Diploma of the Thai Board of Internal Medicine, The Medical Council of Thailand, 2005, and a Diploma of the Thai Sub Board of Gastroenterology and Hepatology, 2009.
- He is proficient in various dialects mainly English, Thai, and Teo Chew.

Dr. Thanyadej Nimmanwudipong
Surgical Gastroenterologist
- Dr. Thanyadej Nimmanwudipong is one of the best surgical gastroenterologists in Thailand and has over 30 years of experience in this field.
- Areas of expertise include Gastroenterology Surgery, Advanced Laparoscopic Abdominal and Gastrointestinal Surgery and Minimal Invasive Surgery.
- His caring behaviour has earned him a stellar patient record.
- He completed Fellowship in Surgical Research from the University of Lousville and a Diplomate from the Thai Board of Critical Care Medicine.
- The Doctor holds a Certificate of Proficiency in General Surgery from Mahidol University in 1986.
- Dr. Thanyadej is proficient in English & Thai.
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- Dr. Thanyadej Nimmanwudipong is one of the best surgical gastroenterologists in Thailand and has over 30 years of experience in this field.
- Areas of expertise include Gastroenterology Surgery, Advanced Laparoscopic Abdominal and Gastrointestinal Surgery and Minimal Invasive Surgery.
- His caring behaviour has earned him a stellar patient record.
- He completed Fellowship in Surgical Research from the University of Lousville and a Diplomate from the Thai Board of Critical Care Medicine.
- The Doctor holds a Certificate of Proficiency in General Surgery from Mahidol University in 1986.
- Dr. Thanyadej is proficient in English & Thai.

Dr. Rattana Boonsirichan
Medical Gastroenterologist
- Dr. Rattana Boonsirichan is one of the best gastroenterologists in Thailand and has over 28 years of experience in this field.
- Areas of expertise include acid-peptic disorders, IBD, IBS and other functional gastrointestinal disorders like constipation, diarrhoeal disorders with or without malabsorption syndrome like celiac disease and liver diseases
- She holds a certificate in advanced therapeutic endoscopy from Germany.
- Dr. Rattana completed Doctor of Medicine (MD.) from Mahidol University.
- Her caring behaviour has earned her a stellar patient record.
- The doctor is proficient in English & Thai.
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- Dr. Rattana Boonsirichan is one of the best gastroenterologists in Thailand and has over 28 years of experience in this field.
- Areas of expertise include acid-peptic disorders, IBD, IBS and other functional gastrointestinal disorders like constipation, diarrhoeal disorders with or without malabsorption syndrome like celiac disease and liver diseases
- She holds a certificate in advanced therapeutic endoscopy from Germany.
- Dr. Rattana completed Doctor of Medicine (MD.) from Mahidol University.
- Her caring behaviour has earned her a stellar patient record.
- The doctor is proficient in English & Thai.

Assoc. Prof. Phunchai Charatcharoenwitthaya
Medical Gastroenterologist
- Assoc. Prof. Phunchai Charatcharoenwitthaya is a skilled Gastroenterologist having 27+ years of experience in this field.
- He is adept in performing Endoscopy and treating digestive disorders.
- His area of interest is Internal Medicine and Gastroenterology.
- He has reputed articles published in Journals.
- He held the post of Associate Prof. (Medicine), Mahidol University, Faculty of Medicine, Siriraj Hosp., Bangkok, Thailand.
- He completed MD, and Internal Medicine (Faculty of Medicine) from Siriraj Hospital Mahidol University, Thailand, in 1993 and 1999 respectively.
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- Assoc. Prof. Phunchai Charatcharoenwitthaya is a skilled Gastroenterologist having 27+ years of experience in this field.
- He is adept in performing Endoscopy and treating digestive disorders.
- His area of interest is Internal Medicine and Gastroenterology.
- He has reputed articles published in Journals.
- He held the post of Associate Prof. (Medicine), Mahidol University, Faculty of Medicine, Siriraj Hosp., Bangkok, Thailand.
- He completed MD, and Internal Medicine (Faculty of Medicine) from Siriraj Hospital Mahidol University, Thailand, in 1993 and 1999 respectively.
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