Personal Information:
Education & Training:
Professional Experience:
Medical Expertise & Achievements:
Positions Held:
Interests
Robotic surgery,
Advanced laparoscopic surgery(Colorectal and GERD Surgery included),
Laparoscopic hernia surgery,
Breast and thyroid surgery,
Gastrointestinal surgery,
Anal region diseases,
Hepatobiliary surgery
Memberships:
Turkish Medical Association
Turkish Surgical Society
American Society of Colon and Rectal Surgery
Dr. Robert Schmidhammer is a leading specialist in peripheral nerve surgery, brachial plexus injuries, reconstructive surgery, and hand surgery. He holds a doctoral degree with a focus in human genetics. He is accredited by the Austrian and German Societies for Hand Surgery and the American Society for Peripheral Nerve Damage.
Dr. Schmidhammer has led research in nerve regeneration. His work explores how movement and bioabsorbable materials affect nerve repair. He has made important contributions to neurolysis, nerve transplantation, muscle transfer, and nerve tumor treatment. He is known for achieving high success rates in complex nerve injury cases.
Education:
Teaching course on “Lymphatic mapping and sentinel node”
June 1998, MDA Cancer Center, Houston, Texas, USA
General Surgery
Feb. 1993 – Dec. 1996, Şişli Etfal Hospital, Istanbul, Turkey
General Surgery
May 1990 – Jan. 1993, Lille University Hospital, Lille, France
M.D.
1983 – 1990, Cerrahpasa School of Medicine, Istanbul, Turkey
Experience
Attending General Surgeon, Jan. 1998 – present
F.N. Metropolitan Hospital, Istanbul, Turkey
American Cancer Center, Breast Surgery
Attending General Surgeon, 1996 – present
Medmar Diagnostic Center, Istanbul, Turkey
Diagnosis and monitoring with sophisticated techniques
General Surgeon, 1996 – 1998
Guzelbahce Medical Center and Yeditepe Hospital, Istanbul, Turkey
Specializing in breast and thyroid surgery
Dr. Harald Rosen is a leading abdominal surgeon. He specializes in endocrine, gastrointestinal, liver, colon, and bariatric surgeries. His expertise includes complex procedures such as sleeve gastrectomy and gastric anastomosis. Dr. Rosen is known for his research on improving the quality of life for rectal cancer patients after surgery. He also has a strong academic background in surgical oncology, with a focus on gastroenterology and breast cancer.
Dr. Rosen is President of the European Society of Surgery. He is also a Professor of Surgery at Vienna Medical School. He is accredited by the European Council for Surgical Qualifications and the Austrian Medical Council. Dr. Rosen has performed over 5,000 advanced surgeries with excellent results. He has published widely and is often invited as a visiting professor around the world.
Dr. Neslihan Demirci is a hair transplant specialist. She has practiced since 2014 and has led more than 2,500 hair transplant procedures. Her work focuses on precision, safety, and natural results.
She heads the Hair Transplant Team. In the operating room, she sets clear quality standards and plans each case individually. She has experience with patients from Canada, the United States, and Europe.
Her approach combines careful planning, an eye for aesthetics, patient-centered care, and strict safety and hygiene standards.
Prof. Dr. Alaettin Çelik graduated from Adapazarı İlyaslar Primary School in 1960, from Haydarpaşa High School in 1966, and from Istanbul University Faculty of Medicine in 1972. In the same year, he became an assistant in the 2nd Surgery Department of the Faculty of Medicine. Between November 1975 and February 1976, he completed his military service for 4 months at the Gelibolu Military Hospital as a Reserve Officer. In 1977, he became a General Surgery Specialist in the Department of Surgery.
To establish the pediatric surgery department at the faculty and to specialize further, he worked as a registrar at the University of London's "The Hospital for Sick Children" from 01.12.1978 to 01.12.1980. After returning to the faculty, he continued his pediatric surgery studies and became an associate professor in 1982.
In the same year, he was appointed as the founding chairman of the Pediatric Surgery Department at Istanbul Faculty of Medicine on 06.09.1982. He established the department, which included a 30-bed inpatient unit, an ICU, a polyclinic, and an operating room for students, assistants, and specialists. In 1988, he became a professor. In addition to leading the Pediatric Surgery Department, he served as the Vice President of the Department of Surgical Medical Sciences between 1990 and 1995. From 1995 to 1998, he was the Head of the Department of Surgical Medical Sciences at Istanbul Faculty of Medicine.
He is a specialist in General Surgery, Pediatric Surgery, and Pediatric Urology. He has numerous cited and published clinical and experimental research articles, case reports, expert theses, and free papers presented at domestic and international congresses. He is the author of several books, including Pediatric Surgery Book of Pediatric Surgery (2014), Newborn Surgery (2008), and Pediatric Surgery Book (2013).
He is a member of various professional medical associations, including the Turkish Ministry of Health Pediatric Surgery Society. He established, developed, and trained a large number of students, assistants, specialists, and faculty members at the Istanbul Faculty of Medicine, Department of Pediatric Surgery. He left the Department of Pediatric Surgery in 2013 and retired due to age limits on 16.03.2016. His contracted working period at the same faculty ended on 22.10.2016. He continues to work as a Pediatric Surgery Specialist at Istanbul Florence Nightingale Hospital and participates in weekly meetings of the Council of Children's Tumors.
2017 - 2018
University of Health Sciences, Tepecik Health Practice Research Hospital
2015 - 2018
University of Health Sciences, Tepecik Health Practice Research Hospital
2013 - 2018
University of Health Sciences, Tepecik Health Practice Research Hospital
2013
Articles Published in 28 International Refereed Journals
Papers and Posters Presented at 17 International Scientific Meetings
Articles Published in 55 National Refereed Journals
56 Papers and Posters Presented at National Scientific Meetings
14 Referenced Publications in National and International Refereed Journals
35 Domestic Panel Conference Moderators Live Surgery
10 Domestic Courses Attended
8 International Conferences Attended
32 Meetings with Domestic Participants
6 International Meetings
Dr. Gerhard Prager is a leading bariatric surgeon. He has performed over 3,000 bariatric operations using advanced techniques such as gastric bypass, sleeve gastrectomy, and biliopancreatic diversion. He serves as Chairman of the Scientific Advisory Board for Bariatric Surgery at IFSO. Dr. Prager has played a key role in shaping international standards in obesity surgery.
Dr. Prager’s practice uses a multidisciplinary approach. He works closely with endocrinologists, psychologists, nutritionists, and other specialists to provide complete patient care. He is active in research, education, and advanced surgical training. Dr. Prager has trained surgeons from more than 50 countries.
He is accredited by the International Federation for the Surgery of Obesity and Metabolic Disorders and the American Society for Metabolic and Bariatric Surgery.
Job Experience
2000 - 2006 Physician Biophysicist
Traumatology Institute, Baku, Azerbaijan
2016 Research Assistant
Gazi University, Department of Obstetrics and Gynecology, Ankara,Turkey
2016-2020 Assistant Doctor
Kocaeli Derince Training and Research Hospital,
Department of Obstetrics and Gynecology, Kocaeli Turkey
2020-2022 Obstetrician-Gynecologist Specialist Doctor
Erzincan Binali Yildirim University Mengucek Gazi Training and
Research Hospital, Department of Gynecology and Obstetrics,
Erzincan, Turkey
2022-2023 Obstetrician-Gynecologist Specialist Doctor
Kandıra State Hospital / Kocaeli Derince Training and Research Hospital, Turkey
2023 - present Obstetrician-Gynecologist Specialist Doctor
Florence Nightingale Hospital
OA Dr. Mark Schurz is a trauma surgeon and sports traumatologist based in Vienna. He has more than 20 years of experience. Since 2002, he has focused on trauma surgery, arthroscopy, and sports injury care.
At Wiener Privatklinik (Ordinationszentrum), he uses minimally invasive techniques and prioritizes joint preservation. He also manages rehabilitation after accidents and sports injuries. He is known for modern sports medicine and personalized care. His approach combines precise surgery with structured rehabilitation.
Dr. Emanuel Sporn is a specialist in surgery, abdominal surgery, and vascular surgery. He is internationally recognized for his work in hernia, breast cancer, and intestinal surgery. Dr. Sporn is known for developing minimally invasive surgical techniques. He made important research contributions while at the University of Missouri-Columbia in the U.S.
Dr. Sporn has over 20 years of experience and has treated thousands of patients. He runs two private offices in Vienna and performs surgeries in leading European clinics. He is accredited in general, visceral, and vascular surgery. Dr. Sporn is also a published author and a regular speaker at major medical conferences worldwide.
Dr. Christoph Neumayer is a Professor of Vascular Surgery at the Medical University of Vienna. He specializes in complex aortic aneurysms, chest aortic diseases, prosthetic infections, carotid artery surgery, peripheral vascular surgery, and endothoracic sympathectomy. He brings over ten years of experience, focusing on advanced surgical procedures and new treatment methods.
Dr. Neumayer has published widely in top scientific journals. He also serves as a reviewer for national and international conferences. He has received the Finland Award, the European Surgery Award, and the Science Award of the Medical Society of Lower Austria. As a visiting professor at Jagiellonian University, he has helped shape vascular surgery education in Austria and authored the national training catalog.
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.
Dr. Michael Matzner is an orthopedic surgeon based in Vienna. He has over 20 years of experience. He has been a certified specialist since 2001. He trained at the University Orthopedic Clinic of the Vienna General Hospital.
His expertise includes orthopedic and spine surgery, minimally invasive joint replacement, arthroscopy, treatment of osteoporosis and osteoarthritis, disc surgery, and fracture care. He practices at the Ordinationszentrum of Wiener Privatklinik. He provides musculoskeletal care with advanced surgical techniques and individualized plans. His focus is to restore mobility and improve quality of life.
Dr. Florian Fitzal is a senior physician at Vienna General Hospital and Vienna Medical University. He specializes in breast and abdominal surgery. He is a certified surgeon and holds a Master of Public Health (MBA). Dr. Fitzal leads the Breast Health Center. He also serves as Scientific Director of the Surgical Center of the Breast.
He is an auditor for the European Council of Surgeons. He is also a board member of the Austrian Breast Cancer and Colorectal Cancer Research Group. Dr. Fitzal has published over 143 scientific papers and has an h-index of 24. He has written four books on breast cancer surgery. He is known for his work in breast-conserving, oncoplastic, and reconstructive surgery.