Page 2 - Best Thyroid disease doctors: TOP 50 doctors

Dr. Klaus Kaczirek is a senior physician at the University Clinic for Surgery, Medical University of Vienna. He specializes in general and visceral surgery. He is known for his skill in hepatobiliopancreatic, oncological visceral, and endocrine surgery. His main focus is on complex operations involving the liver, pancreas, gastrointestinal tract, and endocrine organs.

Dr. Kaczirek holds board certifications in both general and visceral surgery. Since 2008, he has led the liver, gallbladder, and pancreas working group at the Austrian Society for Surgical Oncology. He is a member of the Austrian Society for Surgery, the European Society of Endocrine Surgeons, and other international surgical organizations. Dr. Kaczirek also reviews articles for leading medical journals and has helped advance surgical oncology and endocrine surgery.

Prof. Martin Clodi is a senior endocrinology and diabetology professor with over 25 years of experience, focusing on complex hormonal and metabolic disorders.

• Specialized in internal medicine, endocrinology, and diabetology
• Focuses on treating thyroid, adrenal diseases, and diabetes
• Senior consultant at the Wiener Privatklinik in Vienna
• Contributes to clinical research on metabolic syndrome
• Trained at the Medical University of Vienna

Dr. Victor Alexander Krol - Chief of Gastroenterology, Internal Medicine and Obesity Treatment Center at Martinus Hospital

Dr. Victor Alexander Krol is a highly qualified specialist, heading the departments of gastroenterology and internal medicine. With many years of experience and deep knowledge in his field, Dr. Krol has established himself as an outstanding expert, providing patients with comprehensive treatment and an individual approach. He actively uses the latest methods of diagnosis and treatment of diseases of the gastrointestinal tract, metabolism, as well as diseases of the cardiovascular and respiratory systems.

Dr. Krol is also the director of the certified Obesity Treatment Center at Martinus Hospital, which provides surgical and endoscopic treatments for obesity. The center uses advanced technology to diagnose and treat obesity (adiposis), including methods such as bariatric surgery, endoscopic weight loss, and specialized programs for patients with different stages of obesity. The center is certified to high standards and has excellent results in the treatment of this serious disease.

The Gastroenterology Department, headed by Dr. Krol, diagnoses and treats diseases of the stomach, intestines, liver, pancreas, and gallbladder. The doctors of the department use a wide range of methods, including endoscopic procedures, ultrasound, and other modern diagnostic technologies.

The Department of Internal Medicine covers a wide range of diseases, including cardiology, diabetology, infectology, and therapy of respiratory and renal diseases. Dr. Krol and his team provide a comprehensive approach to treatment using the most advanced methods of medicine.

Thanks to his high professionalism and humane approach to each patient, Dr. Krol deservedly enjoys the respect of colleagues and patients.

Education:

• Degree: Faculty of Medicine, Trakya University, 2009
• Medical Specialty: Internal Medicine, Bakırköy Dr. Sadi Konuk Training and Research Hospital, 2010-2014
• Specialist Doctor: Internal Medicine, Kanuni Sultan Süleyman Training and Research Hospital, 2014-2019
• Specialist Doctor: Internal Medicine, Turkish Hospital Internal Medicine Clinic, Qatar, 2019-2020
• Specialist Doctor: Internal Medicine, Istanbul Medipol University Hospital Mega Hospital Internal Medicine Department, 2020-2024
• Associate Professor Doctor: Internal Medicine, Istanbul Medipol University Medipol Acıbadem Regional Hospital, 2024-Present.

Roles in Projects:

Sub investigator (Assistant Researcher) in the SOUL Study: Cardiovascular Outcome Research of Semaglutide in Type 2 Diabetic Patients, approved by the Turkish Medicines and Medical Devices Agency on May 22, 2019.

Sub investigator (Assistant Researcher) in the international study “SCALE™ Insulin”: Efficacy and Safety of Liraglutide 3.0 mg in Overweight or Obese Patients with Type 2 Diabetes Treated with Basal Insulin (Study Code: NN8022-4272), conducted by Novo Nordisk A.Ş.

Subinvestigator (Assistant Researcher) in the international study NN5401-4266 StepByStep Intensification conducted by Novo Nordisk.

Assistant Researcher in the study "A Research Study to Compare Semaglutide to Insulin Aspart, When Taken Together With Metformin and Insulin Glargine, in People With Type 2 Diabetes (SUSTAIN 11)" (2019-2020).

Assistant Researcher in the PIONEER 1 study: Randomized Clinical Trial of the Efficacy and Safety of Oral Semaglutide Monotherapy in Comparison With Placebo in Patients With Type 2 Diabetes.

Dr. Tülay Omma, Associate Professor

Specialization: Endocrinology and Metabolic Diseases

Academic Background

• Medical Education: İnönü University, Faculty of Medicine (English Program), 1994–2001.
• Internal Medicine Residency: Haseki Training and Research Hospital, 2004–2010.
• Subspecialty in Endocrinology and Metabolism: Ankara Training and Research Hospital, 2013–2017.

Professional Experience

• Clinical Expertise: 
  • General Practitioner with administrative responsibilities, 2002–2004.
  • Specialist in Internal Medicine during mandatory service, 2010–2013.
  • Endocrinologist and Metabolic Disease Specialist at Ankara Training and Research Hospital (2017–2023).
  • Earned the title of Associate Professor in 2023, reflecting her academic and clinical excellence.
    Lokman Hekim Health Group 2023 (present) 

Scientific Contributions & Publications

• Research Output: 
  • Published over 20 articles in peer-reviewed international journals, with a strong focus on diabetes, thyroid disorders, and polycystic ovary syndrome.
  • Delivered numerous oral presentations and posters at national and international conferences.
• Citation Metrics: 
  • Total Citations: 166
  • H-index: 6
  • i10-index: 4

Awards & Recognitions

• Multiple prestigious accolades, including: 
  • Best Oral Presentation Award (2023): For groundbreaking research on COVID-19 vaccines and Graves’ Disease.
  • Best Poster Award (2021): For clinical insights into hypoparathyroidism in Turkey (HiPOPARATURK-NET Study).

Professional Memberships & Certifications

• Active member of leading organizations: 
  • European Society of Endocrinology (ESE) and its Young Endocrinologists & Scientists Committee (EYES).
  • Turkish Society of Endocrinology and Metabolism.
• Completed numerous advanced training programs, including certifications in clinical trials, biostatistics, and thyroid ultrasonography.

Clinical & Research Focus

Dr. Omma’s expertise spans:

• Diabetes management and its complications.
• Advanced thyroid disease diagnosis and treatment.
• Polycystic Ovary Syndrome (PCOS) and its metabolic implications.
• Investigating the relationship between diet and endocrine/metabolic disorders.

After the internal medicine examination, he also practiced in the United Kingdom, mainly treating patients with diabetes and endocrinological problems.

Diploma:

• 2002. Semmelweis University of Medicine General Medicine

Professional exam:

• 2007. Internal medicine
• 2014. Diabetology

Workplace

• 2015-2017 Mens Mentis Health Center
• 2017- EndoCare Endocrinology Center

Endocrinologist

Head of the Head and Neck Surgery Department at Samsung Medical Center – Dr. Baek specializes in thyroid disease.

• Otorhinolaryngologist with extensive experience
• Leads a dedicated team for head and neck surgeries
• Works at one of South Korea's top medical centers

Dr. Philipp Riss is the Team Leader in Surgical Endocrinology at the Medical University of Vienna. He specializes in general and visceral surgery. Dr. Riss earned his Doctorate in Medicine in 2005. He is a Senior Physician and a University Professor. He leads the Surgical Endocrinology Working Group. Dr. Riss has also organized several major international congresses.

He has received the Venia Docendi Award and the Sandoz Award for Thyroid Research. Dr. Riss is a member of leading societies, such as the European Society of Endocrine Surgeons and the International Society of Surgery. He also serves on advisory boards for neuroendocrine and endocrine surgery in Austria.

NUTRITION AND DIET SPECIALIST 

Ezgi Sevic graduated from Hacettepe University, Department of Nutrition and Dietetic as Honor Student. During her education, she conducted studies on “'The Effect of Hedonic Eating Behavior on Obesity', 'Total Parenteral Nutrition in Children' and 'The Relationship Between Insulin Resistance and Obesity'.” During her education, she took part in the field in studies on determining the nutritional status of the society. She worked as intern dietitian in Hospitals of Hacettepe University (Oncology Hospital, Adults Hospital, İhsan Doğramacı Child Hospital), Dışkapı Yıldırım Beyazıt Training and Research Hospital and many Community Health Centres. 
She worked in Izmir Private Ekol Hospital. She successfully completed the 'Bariatric Nutrition Course' and the 'Innovations in Obesity Course'. She has participated in many training and seminar programs in her field. 

Interests: Post- Metabolic and Bariatric Surgery Nutrition, the Nutrition in Chronicle Diseases, Nutrition in Individuals with Diabetes, Nutrition in Cancer, Nutrition in Congenital Metabolic Diseases, Food Intolerances, Body Weight Control, Child and Adolescent Nutrition, Nutrition in Old Age, Nutrition in Pregnancy and Lactation.

Dietit. Ezgi Sevic knows advanced English. 

Dr. Serena Piacentini is a specialist in Endocrinology and Metabolic Diseases. She holds a Degree in Medicine and Surgery and a PhD from the Catholic University of the Sacred Heart in Rome. She has strong clinical and research experience in thyroid and parathyroid disorders, hypothalamic-pituitary and adrenal disorders, osteoporosis, menstrual cycle issues, neuroendocrine tumors, pediatric endocrinology, diabetes, and dyslipidemia.

Dr. Piacentini has improved endocrine diagnostics and treatments. She has published many articles in peer-reviewed journals and presented at medical conferences. She is accredited by top Italian medical boards. Dr. Piacentini has managed over 2,000 endocrine cases, with high patient satisfaction and clear improvements in health outcomes.

Dr. Maksim Sazonov brings 25+ years of surgical expertise to thyroid care at ON Clinic Kharkiv Gagarina.

• Specializes in thyroid surgery, endocrinology, and oncology
• Holds a Ph.D. in Medicine
• Member of Ukrainian and European Associations of Surgeons

Dr. Yaroslav Miroshnykov brings 22 years of medical expertise, specializing in urology and andrology. He leads the Renaissance Technology clinic Medical Center.

• Chief andrologist in Kiev
• Member of the European Association of Sexual Medicine
• Director of Kyiv branch of the Interdepartmental Scientific and Practical Center of Cryobiology and Cryomedicine
• Chief Scientific Officer at the Coordination Center of the Ministry of Health of Ukraine for Organ, Tissue and Cell Transplantation

Dr. Olga Krast leads BIOAGE Clinic, specializing in Anti-Aging Medicine and Non-Surgical Facial Aesthetics.

• Chief Executive of BIOAGE Clinic
• Specializes in Anti-Aging Medicine and Beauty Therapy
• Fluent in English and Russian

2014 : The world's first robotic oral thyroidectomy developed by Kim Hoon-yub

2011 ~ : Fellow of the International Society of Neuro Monitoring Research

2008 ~ : Permanent member of Korean Society of Endoscopic & Laparoscopic Surgeons

2008 ~ : Permanent member of Korean Society of Surgical Oncology

2008 ~ : Permanent member of the Asia Oceania Thyroid Association

2014 ~ : Research Professor, the Korean Society of Endoscopic & Laparoscopic Surgeons

2014 ~ : Member of planning Committee at the Korean Association of Thyroid and Endocrine Surgeons, member of the Medical Rights Advisory Committee

2012 ~ : Member of the International Surgery Research Forum

2015 ~ : Member of the American Thyroid Association

2015 ~ 2016: Research Professor, Division of Head and Neck Surgery, Johns Hopkins University School of Medicine, USA

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

Medical Interests and Activities 

• Internal Diseases, Endocrinology and Metabolic Diseases 

• Diabetes 

• Thyroid Diseases 

• Pituitary Gland Diseases 

• Adrenal Gland Diseases 

• Osteoporosis and Metabolic Bone Diseases 

• Female and Male Reproductive System Diseases 

Educational Background 

• Cerrahpaşa Medical School, 1997 

• Assistant Education for Internal Medicine Haydarpaşa Numune Hospital, 2003 

• Education for Endocrine and Metabolic Diseases: Cerrahpaşa Medical School, 2008 

Professional Experience 

• Göztepe Research & Training Hospital, 2008 - 2010 (mandatory service) 

• Bayındır Hospital, 2010 - 2014 

• Kolan İnternational Hospital, 2014 - 2018 Memberships 

• Turkish Association of Endocrinology and Metabolism 

• Turkish Society of Diabetes 

• European society of Anesthesiology 

• European Association for the Study of Diabetes 

Researches and Publications 

• International articles: 20; national articles: 20; international papers: 15; national papers: 18 Translation of 5 book sections