
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. Somkiat Ussavarojpong
Colorectal Surgeon
- Dr. Somkiat Ussavarojpong is a General Surgeon with experience of 28 years.
- He completed Medical degree, from the faculty of medicine, Siriraj Hospital, Mahidol University 1995 and Diplomate from Thai board of General surgery in 2001
- He is specialized in Colorectal Surgery, Laparoscopic & Endoscopic surgery
- Dr. Somkiat has written several extensive publications for international and national journals.
- He also Certificates in Endoscopic Surgery, Advanced traumatic life support, and Breast reconstruction.
- His special clinical interest lies in General Surgery, and Colorectal Surgery.
- He is fluent in English and Thai.
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- Dr. Somkiat Ussavarojpong is a General Surgeon with experience of 28 years.
- He completed Medical degree, from the faculty of medicine, Siriraj Hospital, Mahidol University 1995 and Diplomate from Thai board of General surgery in 2001
- He is specialized in Colorectal Surgery, Laparoscopic & Endoscopic surgery
- Dr. Somkiat has written several extensive publications for international and national journals.
- He also Certificates in Endoscopic Surgery, Advanced traumatic life support, and Breast reconstruction.
- His special clinical interest lies in General Surgery, and Colorectal Surgery.
- He is fluent in English and 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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Assoc. Prof. Varayu Prachayakul
Hepatopancreatobiliary Surgeon
- Dr. Varayu Prachayakul is an accomplished Gastroenterologist having 27+ years of experience in this field.
- He is adept in performing cholangioscopy / pancreatoscopy and single balloon assisted enteroscopy.
- His area of interest is gastrointestinal bleeding, colon cancer screening, endoscopic ultrasound (EUS) in both diagnosis and therapeutic procedures.
- He has done Certification in Advanced Therapeutic Endoscopy and Endosonography, University Medical Center Hamburg-Eppendorf, Germany (2008).
- He was awarded for the outstanding medical student (1993).
- He had published some case reports, case series and articles in various Journals.
- He is a member of Thai Board of Gastroenterology.
- He pursued MD from Faculty of Medicine, Siriraj Hospital, Mahidol University (1993).
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- Dr. Varayu Prachayakul is an accomplished Gastroenterologist having 27+ years of experience in this field.
- He is adept in performing cholangioscopy / pancreatoscopy and single balloon assisted enteroscopy.
- His area of interest is gastrointestinal bleeding, colon cancer screening, endoscopic ultrasound (EUS) in both diagnosis and therapeutic procedures.
- He has done Certification in Advanced Therapeutic Endoscopy and Endosonography, University Medical Center Hamburg-Eppendorf, Germany (2008).
- He was awarded for the outstanding medical student (1993).
- He had published some case reports, case series and articles in various Journals.
- He is a member of Thai Board of Gastroenterology.
- He pursued MD from Faculty of Medicine, Siriraj Hospital, Mahidol University (1993).

Dr. Nutthiwut Wattanaraksakul
Medical Gastroenterologist
- Dr. Nutthiwut Wattanaraksakul is a well-known Medical Gastroenterologist.
- He has 26 years of rich experience in his field.
- He completed his MD., Faculty of Medicine from Siriraj Hospital, Mahidol University, Thailand, in 1995, Diploma of the Thai Board of General Medicine in 2001, and Diploma of The Thai Board of Gastroenterology in 2003 from Siriraj Hospital, Mahidol University, Thailand.
- He specializes in treating digestive issues.
- He speaks Thai and English.
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- Dr. Nutthiwut Wattanaraksakul is a well-known Medical Gastroenterologist.
- He has 26 years of rich experience in his field.
- He completed his MD., Faculty of Medicine from Siriraj Hospital, Mahidol University, Thailand, in 1995, Diploma of the Thai Board of General Medicine in 2001, and Diploma of The Thai Board of Gastroenterology in 2003 from Siriraj Hospital, Mahidol University, Thailand.
- He specializes in treating digestive issues.
- He speaks Thai and English.

Assoc. Prof. Siwaporn Chainuvati
Hepatopancreatobiliary Surgeon
- Dr. Siwaporn Chainuvatiis is an eminent Gastroenterologist having 25+ years of experience in this field.
- She is proficient in performing Endoscopy and treating digestive disorders.
- Her area of interest is Internal Medicine and Gastroenterology.
- She has reputed articles published in various Journals.
- She held the post of Resident (Internal Medicine) in 2001 at The Mary Imogene Bassett Hospital (Columbia University), Cooperstown, New york.
- She pursued MD (1995) in Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand and completed Fellowship in Gastroenterology (2004), from Yale University, New Haven.
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- Dr. Siwaporn Chainuvatiis is an eminent Gastroenterologist having 25+ years of experience in this field.
- She is proficient in performing Endoscopy and treating digestive disorders.
- Her area of interest is Internal Medicine and Gastroenterology.
- She has reputed articles published in various Journals.
- She held the post of Resident (Internal Medicine) in 2001 at The Mary Imogene Bassett Hospital (Columbia University), Cooperstown, New york.
- She pursued MD (1995) in Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand and completed Fellowship in Gastroenterology (2004), from Yale University, New Haven.

Assoc. Prof. Watcharasak Chotiyaputta
Medical Gastroenterologist
- Dr. Watcharasak Chotiyaputta is an accomplished Gastroenterologist having 24+ years of experience in this field.
- He is adept in performing cholangioscopy / pancreatoscopy and single balloon assisted enteroscopy.
- His area of interest is gastrointestinal bleeding, colon cancer screening, endoscopic ultrasound (EUS) in both diagnosis and therapeutic procedures.
- He has done Certification from Thai Board of Internal Medicine (2002), Thai Board of Gastroenterology (2005), and Research fellowship (2010).
- He has published many papers in various Journals.
- He is member of various esteemed Associations which include: The Thai Medical Council, The Royal College of Physician of Thailand, and The Gastroenterological Association of Thailand.
- He pursued MD from Faculty of Medicine, Siriraj Hospital, Mahidol University (1996).
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- Dr. Watcharasak Chotiyaputta is an accomplished Gastroenterologist having 24+ years of experience in this field.
- He is adept in performing cholangioscopy / pancreatoscopy and single balloon assisted enteroscopy.
- His area of interest is gastrointestinal bleeding, colon cancer screening, endoscopic ultrasound (EUS) in both diagnosis and therapeutic procedures.
- He has done Certification from Thai Board of Internal Medicine (2002), Thai Board of Gastroenterology (2005), and Research fellowship (2010).
- He has published many papers in various Journals.
- He is member of various esteemed Associations which include: The Thai Medical Council, The Royal College of Physician of Thailand, and The Gastroenterological Association of Thailand.
- He pursued MD from Faculty of Medicine, Siriraj Hospital, Mahidol University (1996).

Assoc. Prof. Nonthalee Pausawasdi
Medical Gastroenterologist
- Assoc. Prof. Nonthalee Pausawasdi is a well-known Gastroenterologist having 23+ years of experience in this field.
- She is dexterous in performing Endoscopy and treating digestive disorders.
- Her area of interest is Internal Medicine and Gastroenterology.
- She held the post of Resident (Physician) at Department of Internal Medicine, University of Michigan Health system, Michigan (2004).
- She completed MD from Prince of Songkla University (1997), and got Research Fellowship (Gastroenterology) from University of Michigan Health system, Michigan (2001).
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- Assoc. Prof. Nonthalee Pausawasdi is a well-known Gastroenterologist having 23+ years of experience in this field.
- She is dexterous in performing Endoscopy and treating digestive disorders.
- Her area of interest is Internal Medicine and Gastroenterology.
- She held the post of Resident (Physician) at Department of Internal Medicine, University of Michigan Health system, Michigan (2004).
- She completed MD from Prince of Songkla University (1997), and got Research Fellowship (Gastroenterology) from University of Michigan Health system, Michigan (2001).

Dr. Theeratus Jongboonyanuparp
Hepatopancreatobiliary Surgeon
- Dr. Theeratus Jongboonyanuparp is a Gastroenterologist and Hepatologist having more than 22 years of expertise.
- Services provided by him includes Ulcer, Celiac Disease, Liver Cancer, Inflammatory Bowel Diseases, Pancreatitis, Jaundice, Gastrointestinal Cancer, Crohn's Disease, Gastrointestinal Bleeding, Abdominal Pain, and many more.
- Dr Aramwong Thaveelap pursued Doctor of Medicine from M.D. Faulty of Medicine, Chulalongkorn University Thailland, in 2002.
- He is a member of American Gastroenterological Association.
- He has publications credited to his name.
- He has more than 800 ERCP cases experience.
- Dr. Theeratus Jongboonyanuparp is fluent in English, and Thai.
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- Dr. Theeratus Jongboonyanuparp is a Gastroenterologist and Hepatologist having more than 22 years of expertise.
- Services provided by him includes Ulcer, Celiac Disease, Liver Cancer, Inflammatory Bowel Diseases, Pancreatitis, Jaundice, Gastrointestinal Cancer, Crohn's Disease, Gastrointestinal Bleeding, Abdominal Pain, and many more.
- Dr Aramwong Thaveelap pursued Doctor of Medicine from M.D. Faulty of Medicine, Chulalongkorn University Thailland, in 2002.
- He is a member of American Gastroenterological Association.
- He has publications credited to his name.
- He has more than 800 ERCP cases experience.
- Dr. Theeratus Jongboonyanuparp is fluent in English, and Thai.

Dr. Tanyawat Prangboonyarat
Medical Gastroenterologist
- Dr. Tanyawat Prangboonyarat is a prominent Gastroenterologist having 20 years of experience in this field.
- He is proficient in performing Endoscopy and treating digestive disorders.
- His area of interest is Internal Medicine and Gastroenterology.
- He was awarded a certificate of EUS-ERCP Training from Siriraj Hospital, Mahidol University. Thailand.
- He completed MD (2001) Faculty of Medicine, Thammasat University, diploma in Thai Board of Medicine and Thai Board of Gastroenterology from Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand in 2007 and 2008, respectively.
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- Dr. Tanyawat Prangboonyarat is a prominent Gastroenterologist having 20 years of experience in this field.
- He is proficient in performing Endoscopy and treating digestive disorders.
- His area of interest is Internal Medicine and Gastroenterology.
- He was awarded a certificate of EUS-ERCP Training from Siriraj Hospital, Mahidol University. Thailand.
- He completed MD (2001) Faculty of Medicine, Thammasat University, diploma in Thai Board of Medicine and Thai Board of Gastroenterology from Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand in 2007 and 2008, respectively.

Dr. Wichai Yooyongwattana
Medical Gastroenterologist
- Dr. Wichai Yooyongwattana is an established Medical Gastroenterologist in Thailand.
- His special interests are Endoscopy, Gastrointestinal Diseases, and Hepatic Diseases.
- He completed his MD from Mahidol University Ramathibodi Hospital, Thailand, in 2001. After that, he did a Diploma of the Thai Board of General Medicine in 2007 and a Diploma of the Thai Board of Gastroenterology in 2009 from Ramathibodi Hospital, Thailand.
- He also gained Fellowship in Gastroenterology and Hepatology Unit from Ramathibodi Hospital, Thailand, in 2009.
- Many patients recommend him because of satisfactory results.
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- Dr. Wichai Yooyongwattana is an established Medical Gastroenterologist in Thailand.
- His special interests are Endoscopy, Gastrointestinal Diseases, and Hepatic Diseases.
- He completed his MD from Mahidol University Ramathibodi Hospital, Thailand, in 2001. After that, he did a Diploma of the Thai Board of General Medicine in 2007 and a Diploma of the Thai Board of Gastroenterology in 2009 from Ramathibodi Hospital, Thailand.
- He also gained Fellowship in Gastroenterology and Hepatology Unit from Ramathibodi Hospital, Thailand, in 2009.
- Many patients recommend him because of satisfactory results.
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