Best endocrinologists: TOP 408 doctors

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 sys.

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

• Undergraduate: Çukurova University, Faculty of Medicine 1992-1998
• Specialty Education: Istanbul Training and Research Hospital 1998-2003
• Subspecialization: IU Istanbul Faculty of Medicine 2004-2007
•  

Experience

• Istanbul Training and Research Hospital 1998-2003
• IU Istanbul Faculty of Medicine 2004-2007
• Istanbul Training and Research Hospital 2007-2009
• Şanlıurfa Training and Research Hospital 2009-2011
• Bağcılar Training and Research Hospital August 2011- November 2011
• Istanbul University, Istanbul Faculty of Medicine, Department of Internal Medicine, Endocrinology and Metabolic Diseases December 2011- 2014
• Istanbul University, Istanbul Faculty of Medicine, Department of Internal Medicine, Endocrinology and Metabolic Diseases 2014-2020
• Istanbul University, Istanbul Faculty of Medicine, Department of Internal Medicine, Endocrinology and Metabolic Diseases 2020-2024

Scientific Memberships
 

• Turkish Society of Endocrinology and Metabolic Diseases (Vice President)
• European Society of Endocrinology;
• Endosociety

Awards

1. 1. Bestclinical scientific publication support award (53rd National Diabetes Congress, 2017)
2. 2. 54th National Diabetes Congress (2018) with the study titled "The effects of adding pre-probiotics to the diets of patients with gastric bypass (GBP) on metabolic parameters, icretin levels and hunger, satiety and appetite scores of patients".

Medical Intrests

• Diabetes
• Thyroid diseases (hypothyroidism, hyperthyroidism, thyroid nodules)
• Pituitary diseases
• Adrenal gland diseases
• Osteoporosis

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.

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.

ABOUT THE DOCTOR:

Director of the National Society of Chinese Medicine

Member of the Professional Committee on Encephalopathies

Member of the Professional Committee on Internal Medicine

Member of the Professional Committee of Traditional Chinese Medicine

Member of the Professional Committee on Collateral Diseases

Member of the Brain Diseases Department of the Beijing Society of Traditional Chinese Medicine

President of the China Health Professionals Association

Director of the International Association for the Promotion of Scientific Medical Exchange

Head of the Integrative Chinese and Western Medicine Group, National Clinical Center for Neurological Diseases

Deputy Director of the Department of Integrative Traditional Chinese and Western Medicine, Capital Medical University

Deputy Director of Beijing Institute of Integrative Traditional Chinese and Western Medicine

• Editor of the Traditional Chinese Medicine and Polypathology in the Elderly Sections of the Austin Journal of Multiple Sclerosis and Neuroimmunology

Project Manager of the National and Beijing Natural Science Foundations

Author of more than 180 scientific articles and 8 scientific books

Winner of the Beijing Science and Technology Prize and the China Academy of Chinese Medicine

National Outstanding Clinical Talent of Chinese Medicine

Leader in clinical integrative Chinese and Western medicine

• Head of Scientific Doctors of Chinese Medicine

SPECIALIZATION:

• -demyelinating diseases of the nervous sy
• - multiple sclerosis
• - neuromyelitis opticus
• - brain tumors
• -traumatic brain injury
• -encephalopathy
• -stroke
• -dizziness
• -insomnia
• -headache
• -motor neuron disease
• -complex diseases of the nervous sy
• -endocrine disorders
• -metabolic syndrome
• - a state of semi-illness
• - chronic fatigue

• Wang He Tian
• Head of the Department of Traditional Chinese Medicine
• Executive Director of the Beijing Association of Traditional Chinese Medicine
• Deputy Director of the Working Committee on the Inheritance and Development of Chinese Medicine, Chinese Medical Association
• Deputy Director of the Professional Committee of Chinese Medicine, Chinese Geriatric Society
• Secretary General of the Geriatric Committee of the Beijing Association of Traditional Chinese Medicine
• Permanent Member of the Professional Andrology Committee of Beijing Association of Integrative Traditional Chinese and Western Medicine
• Executive Director of the Andrology Department of the Society of Traditional Chinese Medicine
• Director of Beijing Medical Preventive Association
• Leading expert of the Beijing Group of Experts on Chinese Medicine
• Beijing's leading expert on traditional Chinese medicine and inheritance of academic experience
• Achievement Assessment Expert of the State Administration of Traditional Chinese Medicine
• Medical Director of Beijing Hospital of Traditional Chinese Medicine, Capital Medical University
• Author and co-author of more than 10 clinical books on traditional Chinese medicine.
• Winner of the Beijing Science and Technology Commission Award for Scientific and Technological Progress in Clinical Research
• Deputy Director of the Department of Medical Affairs of Beijing Municipal Administration of Traditional Chinese Medicine

Achieved outstanding success in the treatment of the following pathologies:

• chronic inflammatory processes
• chronic dystrophic-degenerative processes
• diseases of the digestive sy
• diseases of the spleen
• kidney disease
• prostate diseases
• sexual dysfunction
• female in
• urological diseases
• andrological diseases
• pathological processes accompanied by circulatory disorders and blood stagnation
• bedsores
• spinal diseases
• complex clinical cases
• intractable diseases
• rehabilitation treatment

Education and Expertise

• 1989 BORNOVA ANATOLIAN HIGH SCHOOL
• UNDERGRADUATE DEGREE 1995 EGE UNIVERSITY/ FACULTY OF MEDICINE
• SPECIALIZATION IN MEDICINE 2001 DOKUZ EYLÜL UNIVERSITY/MEDICAL FACULTY INTERNAL MEDICINE DEPARTMENT
• MEDICAL SPECIALIST 2005 DOKUZ EYLÜL UNIVERSITY FACULTY OF MEDICINE ENDOCRINE AND METABOLISM DISEASES

Biography

Our doctor admits patients aged or older than 15.

Medical Education

School of Medicine, Ege University

Medical Residency

Department of Internal Medicine, School of Medicine, Dokuz Eylül University

Department of Endocrinology, School of Medicine, Dokuz Eylül University

Areas of Interest

Diabetes Mellitus

Thyroid Diseases

Pituitary Diseases

Hirsutism

Osteoporosis

Membership

Turkish Society of Endocrinology and Metabolism

Experience

• 2005-2009 Private Western Anatolia Central Hospital
• 2009-2011 Private Healing Hospital
• 2011-2016 Private Izmir Sifa University
• 2016-2023 Izmir Medical Point Hospital

Professional Memberships

• Turkish Medical Association
• Turkish Endocrinology and Metabolism Association

Education and Expertise

• ISTANBUL UNIVERSITY FACULTY OF MEDICINE

Diseases

• Adrenal gland diseases
• Diabetes
• Hypertension
• Pituitary Diseases
• High Cholesterol
• Parathyroid diseases
• Diabetes
• Thyroid gland diseases
• Pubescence

Experience

• Izmir Ataturk Training and Research Hospital – Internal Medicine
• Kırıkkale Faculty of Medicine – Endocrinology

Education

• Undergraduate: Faculty of Medicine, Istanbul University, 1993-1997
• M.Sc: Faculty of Medicine, Istanbul University, 1997-1999
• Specialization: Pediatrics, Ondokuz Mayıs University, 1999-2004
• Subspecialty: Pediatric Endocrinology, Ondokuz Mayıs University, 2004-2007
•  

Experience

• Ar.Gör. (Research Assistant): Ondokuz Mayıs University Faculty of Medicine, 1999-2004
• Research Assistant (Minor Research Assistant): Ondokuz Mayıs University Faculty of Medicine (Pediatric Endocrinology), 2004-2007
• Assist. Assoc. Dr.: Ondokuz Mayıs University Faculty of Medicine, 2007
• Uzm. Dr.: Gulhane Military Medical Academy (Military Service), 2007-2008
• Uzm. Dr.: Bakırköy Obstetrics and Gynecology Training and Research Hospital (Compulsory Service), 2008-2011
• Assoc: Bezmialem Vakif University Faculty of Medicine, 2011-2013
• Assoc. Dr.: Bezmialem Vakif University Faculty of Medicine, 2013-2018
• Prof. Dr.: Bezmialem Vakif University Faculty of Medicine, 2018-2023
• Prof. Dr.: Biruni University, 2023-
•  

Scientific Memberships

• National Pediatric Association
• Pediatric Endocrinology and Diabetes Association
•  

Awards

• Growth curves of Turkish girls with Turner syndrome: FAVOR Turner syndrome study group: 59th national pediatric congress 4-8 November 2015 ANTALYA PRIZE FIRST PRIZE FOR AN ORAL PRESENTATION
• Anthropometric findings and karyotype in Turner syndrome: National Turner syndrome database. 19TH UPEK 22-25 OCTOBER 2015. POSTER SECOND PRIZE
• Investigation of the Role of Irisin in the Pathophysiology of Puberty Precox in Female Rats. Esra Kutlu, İlker Tolga Özgen, Huri Bulut 24th UPEK Short Oral Presentation First Prize.
•  

Medical Interests

• -Growth Retardation
• -Puberty Problems (Early or Late Puberty)
• -Menstrual Irregularities in Adolescent Girls
• -Increased Hair Growth in Adolescent Girls
• -Diabetes
• -Obesity
• -Thyroid Problems
• -Pituitary Disorders
• -Genital Abnormalities
• -Micropenis and Gynaecomastia in Boys
• -Adrenal Gland Disorders

Education and Expertise

• 2009 – ERCİYES UNIVERSITY FACULTY OF MEDICINE – MEDICAL EDUCATION

Diseases

• Hypertension
• Breast Cancer
• Stomach Cancer
• Pancreatic Cancer
• Prostate Cancer
• Thyroid Diseases

Experience

• 2014 – Erciyes University Faculty of Medicine – Specialization, Internal Medicine

Professional Member

Publishments

• A1. Sivgin S, Karamustafaoglu MF, Yildizhan E, Zararsiz G, Kaynar L, Eser B, Cetin M, Unal A. Clin Lymphoma Myeloma Leuk. 2016 Aug;16 Suppl: S152-8. doi: 10.1016/j.clml.2016.02.006. The Prognostic Significance of Elevated Serum Ferritin Levels Prior to Transplantation in Patients with Lymphoma Who Underwent Hematopoietic Cell Transplantation (autoHSCT): Role of Iron Overload.

Education and Expertise

• DOKUZ EYLÜL UNIVERSITY FACULTY OF MEDICINE

Diseases

• Hernia Surgery
• Breast Diseases
• Stomach Cancer
• Gallbladder Diseases
• Thyroid Diseases
• Esophageal Cancer

Treatment Methods

• Gastric Bypass
• Laparoscopic Hernia Surgery
• Laparoscopic Gallbladder Surgery
• Breast Surgery
• Gastric Balloon
• Mini Gastric Bypass
• Reflux Surgery
• Revision Surgery
• SADI-S Surgery
• Thyroid Surgery
• Gastric Sleeve
• Swallowable Gastric Balloon

Experience

• Bulent Ecevit University General Surgery
• Van Education and Research Hospital
• Izmir Private Egeşehir Hospital
• Izmir Private Egepol Hospital
• Izmir Private Central Hospital
• Izmir University of Economics Medical Point Hospital

Professional Memberships

• National Turkish Surgical Association
• National Society of Hepato Pancreatico Biliary Surgery
• National Society of Colon Rectal Surgery
• National Society for Minimally Invasive Surgery
• National Society of Robotic Surgery
• National Society of Endocrine Surgery
• Ifso (International Federation Of Surgery Of Obesity)
• National Turkish Association of Obesity Surgery
• National Turkish Obesity Research Association
• Espen (European Society For Clinical Nutrition And Metabolism)
• Kepan (Association of Clinical Enteral Parenteral Nutrition)

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

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)

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 Rive Sy 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

Specialist in bariatric surgery

Surgeon. Laparoscopic and bariatric surgery specialist.