Best Thyroid disease endocrinologists: TOP 120 doctors

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 

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

Specializations

Diabetes (Sugar)

Thyroid

Hypertension

cholesterol

stomach diseases

intestinal diseases

osteoporosis

Experience

Azerbaijan Gusar Central Hospital

Vreden Russian Research Institute of Traumatology and Orthopedics

Azerbaijan Göranboy, First Lieutenant Doctor

Hospital Park Darıca Hospital

BAH

Education

Azerbaijan Medical Faculty (2015)

Kocaeli Derince Training and Research Hospital (2016-2020)

Vocational Trainings, Courses and Conferences Attended

Internal Medicine Congress

Gastro Academy

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™ ”: Efficacy and Safety of Liraglutide 3.0 mg in Overweight or Obese Patients with Type 2 Diabetes Treated with Basal (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 Aspart, When Taken Together With Metformin and 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.

Endocrinologist

Thyroid diseases

Thyroid diseases

Diabetes mellitus (type 1, type 2, gestational diabetes)

Diabetes without sugar

Adrenal diseases

Diseases of the pituitary gland

Hyperprolactinemia

Endocrine obesity (in collaboration with a nutritionist)

Polycystic ovary syndrome (in collaboration with a gynecologist)

Calcium metabolism disorder

Osteoporosis

Metabolic syndrome

SPECIALIZATION:

Endocrinologist

EDUCATION:

Azerbaijan Medical University

COURSES:

Participant of many conferences and seminars held in Turkey with the participation of German doctors in Azerbaijan.

Specializations

Cancer Surgery

Pancreatic Surgery

Bile Duct Surgery

Bariatric Metabolic Surgery

Oncological Surgery

Breast Surgery

Gastric cancer

Colon cancer

Thyroid Cancer

Obesity Surgery

Diabetes Surgeries

Education

Ondokuz Mayıs University Faculty of Medicine (1991)

KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)

Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)

Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)

Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)

Specializations

Cancer Surgery

Pancreatic Surgery

Bile Duct Surgery

Bariatric Metabolic Surgery

Oncological Surgery

Breast Surgery

Gastric cancer

Colon cancer

Thyroid Cancer

Obesity Surgery

Diabetes Surgeries

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

Employment and experience

2023-Present

Military University Hospital Prague
Medical First Aid Service
Physician

2021-Present

Hygeia s.r.o.
Medical practice of MUDr. Zita Čermáková
General practitioner

2018-2023

Poliklinika IPP, s.r.o. (formerly The Clinic Medical s.r.o.)
General practitioner in a facility providing premium medical care

2013-2018

University Hospital Královské Vinohrady, Department of Occupational and Travel Medicine
General practitioner, occupational outpatient care, treatment of occupational diseases, and travel medicine

First Department of Internal Medicine
Physician in the patient processing centre of departments of internal medicine and medical emergency service

2016-2018

Charles University in Prague, Third Faculty of Medicine
Teaching assistant, teaching courses under bachelor's and master's programs in Czech and English

2013-2016

Bulovka Hospital, Department of Forensic Medicine
Physician, emergency medical service for the Police of the Czech Republic

Education

2007-2013

Charles University in Prague, Third Faculty of Medicine
Ludwig-Maximilians-Universität München, Germany (Erasmus programme)
General Medicine
Academic title: "MUDr."  ("doctor of medicine")

2013-

Both fields attracted me already at the high school. My enthusiasm also lasted during my studies at the 1st Faculty of Medicine at the Charles University. After graduating from the university, I joined the Institute of Endocrinology in Prague. At the same time I trained at the Third Internal Clinic of the General University Hospital in Prague. Both institutions are highly specialized centres with a wide range of diagnoses. I had the best teachers. I very much appreciate the two foreign experiences, the internship at the University Clinic in Düsseldorf and at the St. Barts Clinic in London. In 2013, I defended my Ph.D. and after a short maternity break, I successfully passed the attestation in 2015.

Work is also my hobby. I follow the latest trends and participate in both domestic and foreign congresses and seminars.

I assess clients individually, I rely on a calm and friendly approach, a thorough case history, the search for connections and a comprehensive view.

In endocrinology, I monitor the state of hormones (chemical messengers) that are produced by the endocrine glands and circulate in the blood to regulate a large number of bodily functions. The disease comes when the production of a particular hormone is too high or too low. Furthermore, the field of endocrinology includes the care of reduced bone density - osteopenia or osteoporosis.

When caring for diabetic patients, the most important thing for a diabetic is to understand what is going on in his/her body and what results a good lifestyle and treatment might bring. I am open to discussions about various dietary measures, I try to motivate positively and to find the right solution for everyone individually, so that we can reach the target glycemic range.

Education

2003 – 2009

Charles University, 1st Faculty of Medicine, General Medicine 

2009 – 2013

Postgraduate study of the 1st Faculty of Medicine at the Charles University at the Institute of Endocrinology

Topic: Neurosteroids in Endocrine Regulation

Supervisor: prof.  Karel Vondra, MD, DrSc.

Trainer-consultant:  Michaela Dušková, MD, PhD.

2015

Attestation in the field of Diabetology and Endocrinology

Head of Teaching at the Puerto Vallarta Regional Hospital

2020-2023

Medical records manager at the Regional Hospital of Puerto Vallarta 2 months 2020

General practitioner in private medical office

2015-2022

Doctor in charge of weight control clinic

2013-2014

Medical assistant in dermatology clinic

2008-2013

Medical Assistant in Dermatological procedures.

 Medical Assistant in minimally invasive surgical procedures

 Operation of fractional laser machine - IPIXEL-ER and

facial rejuvenation with IPL.

 Experience in laser hair removal with Intense Pulsed Light and

radiofrequency

 Experience with ultrasonic cavitation

 Experience with ultraviolet (UV) light phototherapy machine for the

treatment of psoriasis and vitiligo.

 Experience assisting in Botox and Fillers procedures.

 Biomagnet certified by the Higher Institute of Biomagnetism

doctor ISAAC GOIZ DURAN

 Experience in clinical records

 Training in continuing education and professional development of teachers

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.

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.

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

Prof Spiezia works for our private clinic in Naples, Clinica Ruesch. He is also the Head of the Endocrine Surgery Operative Unit at Ospedale del Mare Hospital, specializing in surgical procedures related to endocrine disorders, particularly thyroid and adrenal surgeries. He is also the Head of the Endocrine Surgery Regional Network, and consultant in the field of diagnostics and ultrasound-interventional therapy. 

Professor specializes in all endocrine pathologies with minimally invasive thyroid-saving interventions, on the parathyroids and lymph nodes, through video-assisted techniques, thermoablation with radio frequency for thyroid nodules, microwave thermoablation, and with laser.

He diagnoses the thyroid and lymph nodes by means of ultrasound-guided needle aspiration. Qualified as a robotic surgeon, coordinates training schools in endocrine ultrasound and has promoted various scientific meetings and training courses, emphasizing the care pathways for patients with thyroid pathologies. 

EDUCATION

Prof Stefano Spiezia holds a degree in Medicine and Surgery from the University of Naples, graduating cum laude in 1981. He specialized in Emergency Surgery at the same university, obtaining his diploma in 1986. In 1993, he completed a six-month specialization course in Minimally Invasive Surgery, followed by a managerial course in 1996 focused on healthcare organization management. He received accreditation for ultrasound units in 1997 and achieved a II level University Master’s Degree in Endocrine Surgery from the Seconda Università degli studi di Naples in 2007. This extensive educational background underscores his expertise in surgical practice and healthcare management.

PROFESSIONAL ACTIVITY

Stefano Spiezia has held several significant roles both in Italy and internationally, including:

• Head of the Endocrine Surgery Operative Unit, Naples, Italy
• Adjunct Professor at the University of Turin, Italy (2011-2025)
• Professor at Second University of Naples for Endocrine surgery, and Interventional diagnostics of the neck (1998-2014)
• Coordinator of the Training School at the Italian Society of Ultrasound in Medicine and Biology (SIUMB).
• Director and founder of the "Save Your Thyroid" International School of SIUMB, operating in Naples, Italy, and Cairo, Egypt
• Consultant in the Visiting Professor program at the Saudi German Hospital in Cairo, Egypt.
• Speaker and Organizer at various international congresses, including the ACTA Congress in Taipei, and the American Thyroid Association Congress in Chicago 

RESEARCH, PUBLICATIONS, MEMBERSHIP

Prof. Stefano Spiezia's research primarily focuses on endocrine disorders, particularly in the context of thyroid and adrenal surgeries: the development and application of minimally invasive surgical techniques, particularly for thyroid and adrenal surgeries, and is recognized as an expert in thermal ablation of the thyroid. 

In Clinical Trials, he is the Principal Investigator (PI) of the first in-human clinical trial (NP-TF-024) aimed at treating benign thyroid nodules, which highlights his commitment to advancing treatment options in endocrine surgery.

Stefano Spiezia is a member of several professional societies, including:

• Founder member of the EUROMIT in Minimally Invasive Thyroid Treatments
• American Thyroid Association: A leading organization focused on thyroid health and research.
• North American Society for Interventional Thyroidology: This society is dedicated to advancing the field of interventional thyroidology.
• Italian Society of Endocrine Surgery (SIUEC): He is a member and serves as a regional delegate in this society, which focuses on endocrine surgical practices in Italy.
• Italian Society of Ultrasound in Medicine and Biology (SIUMB): He is a member and currently serves as the General Secretary of this society, which promotes the use of ultrasound in medical practice

His  Editorial Roles:  Review Editor on the Editorial Board of Thyroid Endocrinology and a member of the Video Endocrinology editorial board in the ATA. 

Author of 7 books and 68 scientific publications.

His work has been cited 3,466 times across 2,256 documents, indicating a significant impact in his field.