Best Metabolic surgery endocrinologists: TOP 54 doctors

NAME: VAROL ESATOĞLU

TITLE: OP.DR. GENERAL SURGERY SPECIALIST

FACULTY OF MEDICINE GRADUATED FROM: ANKARA UNIVERSITY FACULTY OF MEDICINE

GENERAL SURGERY SPECIALTY: HAYDARPAŞA NUMUNE TRAINING AND RESEARCH HOSPITAL

ADVANCED TRAINING: IRCAD STRASBOURG UNIVERSITY

AREAS OF INTEREST: SINCE 2012, HE HAS FOCUSED HIS CAREER MAINLY ON CANCER SURGERY, ADVANCED LAPAROSCOPY AND OBESITY SURGERY.

HAVING GAINED MORE THAN 7500+ BARIATRIC SURGERY EXPERIENCE IN HIS PROCESS. HE CONTINUES HIS MEDICAL PRACTICE AT DR. SUAT GÜNSEL UNIVERSITY HOSPITAL.

HE IS ONE OF THE PHYSICIANS WHO SUCCESSFULLY PERFORMED SURGERIES IN THE FIELD OF ADVANCED LAPAROSCOPIC SURGERY, BARIATRIC AND METABOLIC SURGERY IN CYPRUS.

HE IS ONE OF THE FIRST MEMBERS OF THE LEADING INTERNATIONAL BARIATRIC AND METABOLIC SURGERY IN OUR COUNTRY.

HE HAS GIVEN NUMEROUS TRAININGS, SEMINARS AND SYMPOSIUMS TO HIS DOMESTIC AND INTERNATIONAL COLLEAGUES IN THE FIELD OF BARIATRIC AND METABOLISM SURGERY, AND IS THE LEAD  OF OBESITY SURGERY IN OUR COUNTRY AND IN THE MANY COUNTRY AROUND THE WORLD.

Born in Trabzon in 1972, Dr. İzzettin Kahraman began his medical studies at Karadeniz Technical University Faculty of Medicine in 1989 and earned his Medical Doctor degree in 1995. Following two years as a general practitioner, he embarked on his specialization training in 1997. He completed his residency at Ankara Oncology Training and Research Hospital, becoming a General Surgery Specialist in 2002.

Dr. Kahraman worked as a General Surgery Specialist in public hospitals, including Trabzon Numune Hospital and Bakırköy Dr. Sadi Konuk Training and Research Hospital, for 13 years. From 2016 to 2018, he served as a Lecturer at University of Health Sciences. In 2019, he transitioned to the private sector, continuing his career in private hospitals.

Throughout his career, Dr. Kahraman has engaged in a wide range of training programs both in Turkey and abroad. In 2007, he earned a Surgical Endoscopy Certificate and furthered his expertise in laparoscopic hernia treatments in Hamburg, Germany, in 2008. He also completed a course on Nutrition Practices and Training at Ondokuz Mayis University and a specialized course in laparoscopic hernia repair in Istanbul in 2010.

In 2011, after completing the "Emergency Surgery" course in Istanbul organized by the European Society for Trauma and Emergency Surgery (ESTES), Dr. Kahraman received training in SILS (Single Incision Laparoscopic Surgery) Cholecystectomy at Gazi University in Ankara. Since then, he has specialized in advanced laparoscopic techniques, with a particular focus on endoscopy, gastric diseases, obesity, and metabolic surgery.

In 2021, Dr. Kahraman obtained certificates in Ozone Therapy and Mesotherapy from Medipol University. 

Since 2023, he has been serving at Estexper Clinic, Istanbul.

Education and Experience

• 1992 - 1998, Gaziantep University, Faculty of Medicine
• 2002 – 2015, Cumhuriyet University, Faculty of Medicine, Department of Internal Medicine
• 2015 – 2024, Bağcılar Medipol Mega University Hospital
• 2024 – Present, Medipol Acıbadem Hospital

Dr. Ahmed Saad Khalil is a highly experienced bariatric surgeon specializing in obesity surgery with over 20 years of experience in the field. He has practiced and got trained as well as many training workshops and scientific activities and conferences in the UK, USA, Kuwait, Belgium ,Switzerland and currently and for the last decade operates in Alexandria, Egypt. Dr. Khalil is known for providing top-quality bariatric surgery at a competitive cost, with standards comparable to those in the UK. His expertise and commitment to patient care have established him as a reputable figure in the field of obesity surgery in Egypt and neighboring countries

Dr Ahmed Saad Khalil

MBBCh(Alex.) ,MRCS (eng),MRCS(glasg)

Consultant bariatric and laparoscopic surgeon

member of Egyptian society of bariatric surgery(ESBS)

member of Egyptian society of laparoscopic surgery(ESLS)

member of international federation for the surgery of obesity(IFSO)

Current and previous registration bodies:

Egyptian medical syndicate consultant registry.

Kuwaiti medical association.

Saudi health .

General medical council (UK).

Born in Ankara in 1978, Dr. Umut R. Gündüz began his medical career at the Cerrahpaşa Faculty of Medicine.

Later, he became a General Surgery Specialist at Okmeydanı Training and Research Hospital.

From 2011 onwards, they worked as a General Surgery Specialist at Antalya Training and Research Hospital.

In 2018, they became a Clinical Education Instructor. Dr. Umut Rıza Gündüz primarily focused on metabolic, breast, endocrine & other general surgeries.

In 2021, they worked as both a manager and a physician in the General Surgery department at Özel Termessos Hospital.

Since 2023, Umut R. Gündüz has been continuing to accept patients at their own clinic, mainly specializing in metabolic surgery and performing general surgery operations.

• Gastric Sleeve
• Bypass Surgeries
  • Gastric Bypass
  • Mini Gastric Bypass
  • SASI-S Bypass
  • Roux en-y Bypass
• Endoscopic Procedures
  • Gastric Balloon
  • Gastric Botox
• Revision Surgeries
• Diabetes Surgery
• Complication Surgeries

Some of Dr.Umut R. Gunduz’ Trainings;

• Neck Dissection Course (2019)
  
  – Da Vinci Xi System for Surgeons Training,
  Orsi Academy, Belgium (2018)
  
  – Advanced course in revisional
  bariatric surgery & the management of
  complex cases, Belgium (2017)
  
  – Advance Endoscopy Course, Turkish
  Surgical Association, Turkey (2017)
  
  – Turkish Society of Surgery Advanced Endoscopy Course (2016)

Medical Interests 

Diabetes 

Thyroid Diseases 

Obesity 

Hyperlipidemia 

Secondary Hypertension (Resistant Hypertension) 

Pituitary Gland Diseases 

Adrenal Gland Diseases 

Hirsutism (Increased Hairiness) 

Irregular period 

Delayed Puberty (Delayed Puberty) 

Metabolic Bone Diseases 

Osteoporosis 

Menopause 

Gynecomastia 

Excessive Sweating (Hyperhidrosis) 

Developmental Retardation

Education 

Ziya Gokalp High School / 1993 - 1996 

Gazi University Faculty of Medicine / 1997 - 2004 

Ankara Numune Training and Research Hospital / 2005-2009 / (Internal Medicine Clinic) 

Ankara Numune Training and Research Hospital / 2010-2013 / (Endocrinology and Metabolic Diseases Clinic)

Experience 

Ankara Numune Training and Research Hospital / Clinic of Internal Medicine / Assistant / 2005 -2010 

Bala District State Hospital / Specialist / State Service Obligation / 2010 -2010 

Ankara Numune Training and Research Hospital / Clinic of Endocrinology and Metabolism Diseases / Minor Assistant / 2010- 2013  

Ankara Numune Training and Research Hospital / Clinic of Endocrinology and Metabolism Diseases / Specialist / 2013 - 2014  

Kocaeli Darıca Farabi State Hospital / Clinic of Endocrinology and Metabolism Diseases / Specialist / 55th Term State Service Obligation / 2014 - 2015  

Health Sciences University Derince Training and Research Hospital / Clinic of Endocrinology and Metabolism Diseases / Specialist / 2015- 2016

Health Sciences University Derince Training and Research Hospital / Clinic of Endocrinology and Metabolism Diseases / Associate Professor / 2016-2017

Health Sciences University Derince Training and Research Hospital / Clinic of Endocrinology and Metabolism Diseases / Associate Professor 

Diyarbakır Private Practice / Associate Professor / 2020-2022

Liv Hospital Vadistanbul 2022-

Memberships 

Turkish Endocrine and Metabolism Society 

European Society of Endocrinology

Medical Interests 

Obesity 

resistance 

Diabetes 

Hypoglycemia (low sugar) 

Growth retardation and short stature 

Anorexia 

growth hormone deficiency 

Puberty problems (early puberty, delayed puberty, excessive hair growth, menstrual irregularity, polycystic ovary syndrome) 

Turner syndrome 

Thyroid diseases (Goiter, hypothyroidism, hyperthyroidism, Hashimoto’s disease, thyroid nodule) 

Sexual development disorders (small penis, undescended testis, gender ambiguity, hypospadias) 

Adrenal gland diseases (Congenital adrenal hyperplasia, Addison’s disease, Cushing’s syndrome) 

Bone and calcium metabolism diseases (rickets, vitamin D deficiency, osteoporosis) 

Education 

Bachelor’s - Master’s: Ankara University Faculty of Medicine (1998-2004) 

Ph.D. - Specialization in Medicine: Child Health and Diseases, Dr. Sami Ulus Gynecology and Childhood Health and Diseases Training and Research Hospital (2005-2010) 

Ph.D. - Minor specialization: Pediatric Endocrinology, Dokuz Eylul University Faculty of Medicine (2010-2013) 

Experience 

Child Health and Diseases Specialist Diyarbakır Children’s Hospital 2010 

Pediatric Endocrine Minor Assistant Dokuz Eylül University Medical Faculty Hospital 2010-2014 

Pediatric Endocrinology Specialist İzmir Tepecik Training and Research Hospital 2014-2015 

Assistant Professor Izmir Katip Celebi University Faculty of Medicine 2015-2016 

Associate Professor Izmir Katip Celebi University Faculty of Medicine 2016-2021 

Pediatric Endocrinology Associate Professor Ulus Liv Hospital 2021- Present 

Pediatric Endocrinology Associate Professor Vadistanbul Liv Hospital 2021- Present

Memberships 

Aegean Child Endocrine and Diabetes Association, Member, 2010 

Pediatric Endocrinology and Diabetes Association, Member, 2010 

Growing Child Association, Member, 2014 

European Society of Pediatric Endocrinology (ESPE), Member, 2016

Dr. Cüneyt Çiftdoğan was born in Ankara in 1971. After completing primary school in Gaziantep, he settled in Izmir and completed his secondary and high school education in Izmir. In the last years of his high school education, with his passion for white coats, he took the university exam and was accepted to Ege University Faculty of Medicine.

Cüneyt Çiftdoğan, who started his medical education at Ege University in 1988, graduated as a medical doctor in 1994 after an intensive and successful medical education. Cüneyt Çiftdoğan, who passed the Medical Specialization Examination (TUS) in 1997 and started his specialization training in the Department of General Surgery at Celal Bayar University Faculty of Medicine, took part in many successful operations until 2002 and had serious experience in the branch of general surgery. After his specialist training, Op. Dr. He was entitled to receive the title.

Dr. Cüneyt Çiftdoğan has been working as a General Surgery Specialist since 2002. He has equipped his professional skills and abilities with technological developments by working in many public and private hospitals.

Professional Interests

Metabolic and Obesity Surgery

Gastric Botox

Reflux Surgery

Goiter Surgery

Breast Diseases

Intestinal Tumor Surgery

Laparoscopic Gallbladder Surgery

Laparoscopic and Open Hernia Surgery

Liver Cystic Diseases

Colon Cancer Surgery

Rectum Cancer Surgery

Perinal Fistula

Fissure and Hemorrhoidal Diseases

Pilonidal Sinus Surgeries

Soft Tissue Tumors

Diagnostic Endoscopy and Colonoscopy

Memberships to Scientific Organizations

Izmir Medical Chamber

Turkish Surgical Association

Aegean Region Surgical Association

Aegean Region Breast Diseases Association

Plastic Surgery: We offer plastic surgery services with our experienced surgeons using up-to-date techniques. We aim to achieve natural and aesthetic results by producing solutions specific to each individual's needs.

Hair, Beard and Eyebrow Transplantation: We offer special solutions to those struggling with hair loss, sparse beard or eyebrow problems. Our expert team aims to achieve natural results that suit the person's facial features.

Filling Applications: We safely perform filling applications used for facial rejuvenation and contouring with our expert aesthetic surgeons. With our approach that prioritizes naturalness, we help our customers achieve the look they want.

Educational Status

• 1998-2004 Karadeniz Technical University Faculty of Medicine
• 2008-2014 Mayıs University, Department of General Surgery

Institutions He Works For

• 2004 Gümüşhane Private Medical Center
• 2004-2006 Gümüşhane-Torul State Hospital Emergency Service
• 2006-2008 Torul Health Group Directorate
• 2014-2016 Van Erciş State Hospital (General Surgery Specialist)
• Büyükçekmece Kolan Hospital
• Özel Florya Hospital

Skills And Expertise

• Obesity and Metabolic Surgery
• Thyroid Diseases
• Gallbladder and Liver Diseases
• Oncological Surgery
• Anal Region Diseases
• Breast Diseases
• Stomach Botox and Gastric Balloon Applications

He was born in Istanbul in 1982. He graduated from Kocaeli University, Faculty of Medicine. In 2012, he worked as an emergency medical assistant at Taksim First Aid EAH.

Between 2013-2018, he specialized in general surgery at Haseki EAH. Then, between 2018-2020, he completed his compulsory service at Bitlis Tatvan State Hospital. 

Since 2020, with Dr. Hasan Lice, they have worked with the Sava team for bariatric surgeries. He is married and has two kids.

He is also the deputy chief physician of the hospital.

He was born in 1967 in Istanbul. He completed primary, secondary, and high school in Istanbul. 

He graduated from Capa Medical Faculty in 1993.He worked as an assistant at Taksim Training and Research Hospital between 1994-1998. Between 1998 and 2012, 

he served on diagnosis and therapeutic solutions in General Surgery, Cancer Surgery, Laparoscopy Surgery, and Endoscopy in the 2nd Surgery Clinic at Haseki Training and Research Hospital. He is married and has 2 children. He speaks Turkish and English.

Gallbladder and bile duct surgery

Breast disease treatment and surgery

Anal region disease treatment and surgery (hemorrhoids, anal fissure, perianal abscess and fistula surgery)

Obesity treatment (Gastric balloon, botox and surgical treatment)

Thyroid diseases and surgical treatment

Hernia surgery (open and laparoscopic) (groin, umbilical, wound hernias)

Colon, rectum, stomach diseases and surgical treatment

Endoscopic diagnosis and treatment interventions (gastroscopy, colonoscopy, ercp, peg)

2009- Atlas University Medicine Hospital

2004-2009 Tosya State Hospital

1994-2004 Taksim Education and Research Hospital

1999-2004 Taksim Education and Research Hospital General Surgery Clinic

1992-1998 Istanbul University Istanbul Faculty of Medicine

Courses and Conferences

Bakırkoy Dr. Sadi Konuk Education and Research Hospital General Surgery Clinic Endoscopy Unit Videoendoscopy Application Certificate (March 2006)

Education

-Undergraduate Education (6 years) İstanbul University

-Cerrahpaşa Faculty of Medicine 2000 - 2006

-Specialization in Medicine İstanbul University Cerrahpaşa Faculty of Medicine 2007

Medical Field of Interests

-Gastric sleeve

-Gastric bypass

-Gastric balloon 

-Swallowable Gastric balloon Metabolic surgery

-Revision Surgery

Experience

-20 Years of Surgical Experience 3000+ Obesity and Metabolic Surgery

PUBLISHMENTS

3 Articles Published in National Refereed Journals

18 Papers Presented at International Scientific Meetings and Published in the Proceedings Book

Dr. Ayman is a Medical Doctor and Surgeon specializing in General and Bariatric Surgery, with extensive training and experience in minimally invasive surgery and obesity management.

Doctor earned his Master's Degree in Medicine and Surgery from the University of Brescia in 2005. He then completed his specialization in General Surgery at the same university in 2016, with a thesis titled "Fast track in minimally invasive colon surgery. He has complete autonomy in the clinical management of complex patients and extensive experience in performing a variety of surgical procedures, including major surgeries. His expertise includes gastric and colorectal surgery, bariatric surgery, abdominal wall surgery, videolaparoscopic (VLC) and laparotomic (VLA) procedures, and proctology. He is particularly skilled in performing medium and major surgeries in emergency settings.

Currently, he practices at Maria Cecilia Hospital in Bologna, where he evaluates the degree of obesity and associated conditions. Based on these assessments, he determines the most suitable surgical intervention, such as sleeve gastrectomy, gastric bypass, and mini laparoscopic bypass.

He has advanced training in colorectal and abdominal wall surgery from top institutions in Italy and Belgium.

He is an active member of the Italian Society of Obesity Surgery and Metabolic Disorders (S.I.C.OB.) and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), contributing to the advancement of bariatric surgery on an international level.

Dr. Ayman is distinguished by his dedication to patient care and his advanced skills in minimally invasive and bariatric surgery.

Professor Burhan Mayir isespecially interested in metabolic and bariatric surgery, also. He performs single port (scarless) sleeve gastrectomy, gastric by pass procedures and revisional bariatric surgeries. He has experience about metabolic-bariatric surgery, gastro-esophagus reflux surgery, endoscopic thyroid surgery (scarless thyroidectomy), cancer surgery, hernia surgery, adrenal gland surgery, other gastrointestinal surgical procedures, liver surgery, spleen surgery, hemorrhoid surgery and anal fissure surgery. He has speeches in various congresses and meetings, over 60 articles published in national and international refereed journals, and over 100 abstracts presented at congresses.

Born in 1982 in Istanbul, Dr. Fatih Can Karaca completed his high school education at Bahçelievler Super High School in 2000 and then entered Cerrahpaşa Medical Faculty, graduating in 2006. During his medical training, he was a key player on the faculty's basketball team, winning the 14 March Medical Tournament twice.

In 2007, he began his residency in General Surgery at Istanbul University, developing a keen interest in laparoscopic surgery. He contributed to Turkey's first laparoscopic metabolic surgery for Type 2 diabetes at the Special Metabolic Surgery Clinic in 2009. He continued his education in metabolic surgery at Universal Hospitals’ Taksim German Hospital in 2011 and completed his residency in General Surgery in 2012.

From 2012 to 2014, Dr. Karaca worked as a General Surgery Specialist at Kanuni Sultan Suleyman Training and Research Hospital, followed by a role at a Metabolic Surgery Clinic in Şişli from 2014 to 2017. He gained extensive experience in obesity surgery and the surgical treatment of diabetes during this period. In 2015, he became a lecturer at Istanbul Bilgi University, sharing his knowledge and experiences with younger colleagues, and he was promoted to Assistant Professor in 2016 and Associate Professor in 2021.

Dr. Karaca has held various positions as a General Surgery Specialist in different hospitals, where he established obesity clinics and performed numerous successful surgeries. He is an active member of several professional organizations, including the International Federation for the Surgery of Obesity (IFSO) and the Turkish Obesity Surgery Association (TOSS).

An avid sports enthusiast, particularly in basketball and soccer, Dr. Karaca encourages his patients to incorporate sports into their lives. He also enjoys chess and nature walks. He is proficient in English, married, and a father of two.

Dr. Karaca has participated in numerous national and international conferences on obesity surgery, where he has presented his findings and experiences. He has published numerous scientific articles in prestigious international journals in the field of obesity surgery.

Dr. Erdem Can Yardımcı, MD

Accredited Metabolic, Bariatric, and Weight-Loss Surgeon

Dr. Erdem Can Yardımcı is a highly skilled, accredited bariatric surgeon with extensive experience in metabolic, bariatric, and weight-loss surgery. He earned his medical degree from the prestigious 19 Mayıs University Faculty of Medicine in Samsun (2005-2011) and completed his surgical specialization at Antalya Training and Research Hospital (2013-2018). Over the years, he has become a trusted expert in performing complex surgical procedures.

Dr. Yardımcı has served in prominent positions, including at Istinye University Bahçeşehir Liv Hospital's Organ Transplant Clinic in Istanbul (2021-2022) and Tokat Medical Park Hospital (2020-2021). Since 2022, he has been an essential part of the Clinics United team in Antalya, where he continues to transform lives through safe and effective bariatric surgeries.

As an accredited bariatric surgeon, Dr. Yardımcı has participated in numerous international training programs and conferences, staying at the forefront of the latest advancements in obesity surgery. His dedication to patient care, combined with his continuous professional development, ensures that every patient receives world-class treatment and compassionate support throughout their journey.

Anyarat Vichayawannakul, M.D.

Expertise

INTERNAL MEDICINE / ENDOCRINOLOGIST AND METABOLISM 

Graduation (M.D. From)

Bachelor of Medicine, Faculty of Medicine, Chulalongkorn University (Second Class Honor)

Certificates

Diploma in Internal Medicine, Faculty of Medicine, Chulalongkorn University

Diploma in Endocrinology and Metabolism, Rajavithi Hospital, Department of Medical Services .

Current Positions

INTERNAL MEDICINE / ENDOCRINOLOGIST AND METABOLISM AT INTRARAT HOSPITAL