
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. 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.

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.
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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. Pathipat Durongkasem
Medical Gastroenterologist
- Dr. Pathipat Durongkasem is a well-known Gastroenterologist in Bangkok, Thailand.
- He has 13 years of experience in his field.
- He completed his MD with second-class honours from Siriraj Hospital, Mahidol University, Thailand, in 2009 and Diploma of Thai Board of Internal Medicine. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2015.
- He also did a Diploma of Thai Subspecialty Board of Gastroenterology. Faculty of Medicine Prince of Songkla University, Thailand, in 2017.
- He received a Certificate of Advanced Endoscopy. NKC Institute of Gastroenterology and Hepatology, Songklanagarind Hospital, Thailand, in 2018.
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- Dr. Pathipat Durongkasem is a well-known Gastroenterologist in Bangkok, Thailand.
- He has 13 years of experience in his field.
- He completed his MD with second-class honours from Siriraj Hospital, Mahidol University, Thailand, in 2009 and Diploma of Thai Board of Internal Medicine. Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand, in 2015.
- He also did a Diploma of Thai Subspecialty Board of Gastroenterology. Faculty of Medicine Prince of Songkla University, Thailand, in 2017.
- He received a Certificate of Advanced Endoscopy. NKC Institute of Gastroenterology and Hepatology, Songklanagarind Hospital, Thailand, in 2018.
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