Best Thyroid function tests (including T3, T4, TSH) doctors: TOP 89 doctors

The doctor graduated from the School of Medicine at Hacettepe University and completed residency at Istanbul Sisli Etfal Training and Research Hospital, followed by a fellowship at the Hacettepe University Cancer Institute.

Specializing in oncology, the doctor has extensive experience in treating various cancers, including breast, testicular, ovarian, lung, head and neck, and gastrointestinal cancers.

The doctor has worked at prestigious institutions such as The University of Texas MD Anderson Cancer Center, Hitit University Corum Training Hospital, and Medical Park Hospital.

Dr. Kemal Raşa is an experienced general surgeon with over 20 years of practice, specializing in breast cancer, pancreatic and thyroid cancer surgery, and glucose metabolism and infection treatment. He is the President of the Surgical Infection Society - Europe and a lecturer in several departments. He is also a member of The Surgical Infection Society Europe (SIS-E), The World Society of Emergency Surgery (WSES), The World Surgical Infection Society, The Turkish Medical Association and The Turkish Surgical Association.

The doctor completed medical education at Istanbul University, Cerrahpaşa Faculty of Medicine, and conducted clinical studies at Baylor College of Medicine and The University of Texas Medical School. He passed the USMLE exams and obtained the ECFMG Certificate to practice in the USA. After returning to Turkey, he specialized in general surgery at Istanbul University and earned a diploma in Laparoscopic Surgery from the University of Strasbourg. He passed the European Board of Endocrine Surgery exam and is one of five surgeons in Turkey with this certification. The doctor has over 10 years of experience in laparoscopic and minimally invasive surgeries, performing over 2000 successful operations.

Nuclear medicine specialist

Dr. Sertkaya graduated from Konya Meram Science High School in 2001 and entered Gazi University Medical Faculty the same year, graduating in 2008. He completed his urology specialization at Haydarpaşa Numune Training and Research Hospital in 2014, becoming a urology specialist.

Since becoming a specialist, he has focused on the sub-branch of Andrology, attending various training sessions and conferences and performing surgeries with some of the world's leading Andrology professors. In 2017, he passed the written and oral proficiency exams conducted by the European Association of Urology, earning the title of "FEBU."

In 2020, Dr. Sertkaya achieved the rank of Associate Professor of Urology. His journey in Urology and Andrology, which began in 2008, continues at the Andro Expertise Male Health and Aesthetics Center, which he founded in 2022. He sees patients in his own clinic and performs surgeries at affiliated hospitals.

Doctor Brenda Pastrana is a mexican surgical Oncologist. 

Medical background.

Centro Medico Nacional 20 de Noviembre Issste, Surgical Oncologist in 2020.

Title by Universidad Autónoma de México UNAM.

Surgical Residency Instituto Mexicano del Seguro Social. 2015.

Title by Universidad de Quintana Roo. 

Board Certified by Conacem from 2020 to 2025 number 2171 

Board Certified by Conacem from 2025 to 2030 number 2171

Member of SMEO. Sociedad Mexicana de Oncología. 

University teacher at Universidad Anahuac of Medicine since 2020.

The doctor serves as the Chief Physician of the Otolaryngology, Head and Neck Surgery, and Plastic Surgery Departments at Solingen Clinic in Germany. Specializing in the sparing treatment of tumors in the head, neck, and upper airways, the doctor employs advanced techniques such as endoscopic operations through the nose and robotic interventions with incisions as small as 1 cm.

With over 11 years of surgical experience, the doctor is also an accomplished academic, contributing to 78 scientific publications. The doctor completed medical studies in the USA and Germany, and has held significant roles in various German medical institutions.

Eduardo Fernandez, MD

Medical Doctor & Stem Cell Expert

Dr. Eduardo Fernandez is a distinguished medical professional specializing in stem cell therapies and regenerative medicine. He is a certified member of the Mexican College of Stem Cells and Regenerative Medicine, as well as the Mexican Council of Stem Cells for Therapeutic and Research Purposes. Dr. Fernandez’s certifications are the result of a rigorous 8-hour examination process, reserved for a select group of doctors who possess advanced knowledge and experience in these cutting-edge treatments. With only 50 certified doctors in Mexico, Dr. Fernandez’s expertise is highly sought after and respected.

In addition to his national recognition, Dr. Fernandez is awaiting international certification from the renowned International Society for Stem Cell Research (ISSCR). Membership in this prestigious organization signifies Dr. Fernandez’s extensive experience and expertise in stem cell treatments. The ISSCR includes prominent scientists from renowned universities such as Harvard, Yale, Stanford, and other esteemed institutions worldwide. Being a part of this elite society represents the pinnacle of honor and prestige in the field of stem cell therapies.

Furthermore, Dr. Fernandez is also seeking membership and international certification from the International Society for Extracellular Vesicles (ISEV), the largest community of extracellular vesicle researchers globally. With only two thousand members worldwide, ISEV’s select nature underscores Dr. Fernandez’s exceptional dedication to advancing scientific knowledge in the study of exosomes and cellular messengers. By pursuing membership in ISEV, Dr. Fernandez continues to demonstrate his commitment to staying at the forefront of research and innovation in the field of regenerative medicine.

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. Einat Shacham‑Shmueli is a senior medical oncologist at the Gastrointestinal Clinic, Cancer Center, Sheba Medical Center. She treats cancers of the colon, stomach, and pancreas. She also manages metastatic disease. She uses precision diagnostics and biomarkers, systemic therapies, and radiotherapy. Care is provided within a multidisciplinary team.

She has authored more than 25 peer‑reviewed papers on GI oncology, tumor biology, and new treatments. Her work includes studies on stenting for malignant colonic obstruction. She serves as an investigator in international programs, including the NCI, the Radiation Therapy Oncology Group, and the Cancer Therapy Evaluation Program.

Education: MD, Tel Aviv University. Oncology residency, Tel Aviv Sourasky Medical Center. Advanced training in GI oncology, UCSF. Accreditations: Board certified in Oncology and Gastroenterology. Member, Israel Society of Oncology and Radiotherapy.

Education and Specialization

• Faculty of Medicine, Hacettepe University
• 1999 - Akdeniz University, Faculty of Internal Medicine, Internal Medicine Specialization Training
• Internal Medicine Specialization Training in the USA, Akdeniz University (2013 - 2014)
• Internal Medicine Specialization Training in the USA (2013 - 2014) - Medical Oncology Department
• Akdeniz University, Faculty of Medicine, Department of Medical Oncology (Received Associate Professorship title)

Work Experience

• 2009 - Kayseri Training and Research Hospital, Hospital
• Acıbadem Kayseri
• 2017 - 2018 - Lara Private Anadolu Hospital
• 2018 - Medical Park Antalya Hospital Complex

Expertise

• Diagnosis of organ tumors
• Chemotherapy in cancer treatment
• Targeted cancer therapies
• Immunotherapy in cancer treatment
• Next-generation genetic research in cancer treatment
• Complementary medicine in cancer treatment
• Medical oncology

The doctor graduated from Cerrahpaşa School of Medicine, Istanbul University in 1999 and completed a residency in Internal Medicine there in 2005. Further specializing in Endocrinology and Metabolic Diseases, the doctor completed a fellowship at Selçuk University in 2010 and achieved Associate Professorship in 2016.

Recognized for excellence in scientific research, the doctor received awards at the National Diabetes Congress and Selçuk University in 2014. With 42 international and 16 local scientific articles, the work has been cited 230 times. The doctor has contributed to 80 presentations and participated in numerous scientific projects, including those funded by TUBİTAK.

Clinical interests include diabetes, thyroid diseases, and hormone disorders.

The doctor graduated from Istanbul University's Çapa School of Medicine in 1998 and completed a residency in Radiodiagnostics and Interventional Radiology at Cerrahpaşa School of Medicine in 2002. Specializing in Diagnostic Radiology and Teleradiology, as well as Interventional Radiology, the doctor has participated in 12 local and one international congress, contributing numerous oral and written presentations. The doctor has held positions at Hisar Intercontinental Hospital, Merzifon Air Hospital, Istanbul Emar Center, and Haseki Training and Research Hospital.

Prof. Dr. Ayla Güven graduated from Gazi University Faculty of Medicine in 1986 and completed her mandatory service at Ege University Chest Diseases Bornova Tuberculosis Dispensary. Following that, she started her specialization training in the Department of Child Health and Diseases at Hacettepe University Faculty of Medicine and became a specialist in 1993. After working as a specialist physician, she began her subspecialty training in Pediatric Endocrinology at Gazi University Faculty of Medicine in September 2000 and became a Pediatric Endocrinology specialist in December 2002. In April 2003, she started working as an assistant professor at Ondokuz Mayıs University Faculty of Medicine and worked in the Pediatric Endocrinology and Diabetes Department at the Children’s Hospital of Pittsburgh, USA, between May and November 2003. After returning to Turkey, she continued to work at Ondokuz Mayıs University Faculty of Medicine. This clinic was the first to offer Pediatric Endocrinology subspecialty training in the country. During her time there, one person became a Pediatric Endocrinology specialist. On March 13, 2006, she successfully passed the exam and received the title of Associate Professor. Since December 2006, she has been working at Göztepe Training and Research Hospital. In this hospital, she was appointed as the head of the Pediatric Endocrinology clinic in November 2008 and started providing Pediatric Endocrinology subspecialty training for the first time in the hospital in March 2009. Between 2009 and 2017, she trained five Pediatric Endocrinology specialists. Most of the physicians she currently provides subspecialty training to have gained academic titles as professors and associate professors. After working as a training instructor at Health Sciences University Zeynep Kamil Hospital for Children and Women from 2017 to 2021, she retired at her request from public service. Between 2021 and 2024, she worked as a Pediatric Endocrinology specialist at Başkent University Faculty of Medicine, Department of Child Health and Diseases, at Istanbul Hospital.

MEDICAL INTERESTS

• Menstrual disorders and increased hair growth in girls, polycystic ovary syndrome
• Adrenal diseases
• Sexual development disorders
• Type 2 diabetes
• Thyroid diseases
• Growth disorders: short stature and tall stature
• Puberty disorders: precocious puberty-delayed puberty

The doctor completed medical education at Trakya University Medical School, Cerrahpaşa Medical School, and Kocaeli University Medical School. Specializing in endocrinology, the doctor focuses on diabetes, obesity, thyroid disorders, and diseases of the pituitary and adrenal glands.

With a robust academic background, the doctor has contributed to the medical field with more than 25 national and international publications, showcasing expertise and commitment to advancing medical knowledge in these areas.

Prof. Dr. Sezer Sağlam is a medical oncologist at Gayrettepe Florence Nightingale Hospital. He specializes in gastrointestinal and breast cancers. He has contributed to cancer care through research, especially with his study on the best timing for surgery after neoadjuvant therapy in rectal cancer. This work has influenced global treatment protocols.

Dr. Sağlam has led clinical trials in targeted therapies and precision medicine. His research on liver-transplanted patients with hepatocellular carcinoma was nominated for the 2024 International Best Researcher Award. He is a member of ASCO, ESMO, and ENET. Dr. Sağlam provides personalized and evidence-based oncology care.

Experience

• Resident physician at the Princess of Spain Hospital, Bellvitge (until December 1996).
• Scholarship from the Ciutat Sanitària i Universitària de Bellvitge (1997), focused on the treatment of type I diabetes.
• Physician in the Department of Internal Medicine at the Bellvitge Hospital (until March 1999).
• Endocrinologist at the Dr. Josep Trueta Hospital in Girona (until September 2000).
• Member of the medical staff of the Teknon Centre since 2002.

Education

• Degree in Medicine and Surgery from the University of Valencia (1992).
• Specialist in endocrinology and nutrition (since 1997).

Scientific activity

• Dissertation : "Study of the pituitary-adrenal axis in pituitary diseases."

Teaching

• Lecturer in Endocrinology and Metabolism at the International University of Catalonia.
• Participation in conferences and publications on diabetes and the pituitary-adrenal axis in national and international journals.

The doctor is a leading figure in medical oncology, hematology, and cancer immunotherapy, with a career spanning over four decades. After earning a medical degree from the University of Vienna in the 1970s, the doctor completed specialist training in internal medicine and oncology in the 1980s.

In the 1990s, the doctor was appointed Head of the Clinical Division of Oncology at the Medical University of Vienna, leading Austria's largest oncology department. The 2000s saw the founding of the Comprehensive Cancer Center Vienna, integrating patient care, research, and education.

The doctor served as President of the Central European Cooperative Oncology Group in the 2010s and currently holds positions as Chairman of the Vienna Cancer Center and Medical Director of Wiener Privatklinik’s International Oncology Center.

Dr. Saban Sec is a medical oncologist with experience at leading hospitals, including Haseki Training and Research Hospital, Prof. Dr. Cemil Taşcıoğlu City Hospital, and Bahçelievler Medikalpark Hospital. He currently represents specialist physicians in the Turkish Medical Oncology Association. He is also a member of the Istanbul Medical Chamber and the Turkish Medical Oncology Association.

Dr. Sec treats breast, lung, gastrointestinal, prostate, urogenital, head and neck cancers, as well as sarcomas and rare tumors. He has published many peer-reviewed articles on cancer prognosis, treatment outcomes, and survival rates. His research includes studies with large patient groups, such as 138 patients with HER2-positive metastatic gastric cancer. Dr. Sec focuses on prognostic factors and treatment responses in different cancers. He is dedicated to improving cancer care.