Experience
2019 - 2022 Medipol University
2010 Private Nisa Hospital
2008 - 2010 Kaman State Hospital
Education
2008
Istanbul University Cerrahpaşa Faculty of Medicine, Obstetrics and Gynecology
2002
Istanbul University, Istanbul Faculty of Medicine
Experience
2019 - 2022
University of Health Sciences, Faculty of Medicine, Ankara City Hospital, Cardiology Clinic, Ankara
2017 - 2019
University of Health Sciences, Faculty of Medicine, Turkey Higher Specialization Training and Research Hospital, Cardiology Clinic, Ankara,
2012 - 2017
Türkiye Higher Specialization Training and Research Hospital, Cardiology Clinic, Ankara,
2012 - 2017
T.R. Karabük University, Faculty of Medicine, Department of Cardiology
2006 - 2006
Türkiye Higher Specialization Training and Research Hospital, Cardiology Clinic, Ankara,
2001 - 2006
Türkiye Higher Specialization Training and Research Hospital, Cardiology Clinic, Ankara,
1996 - 2001
Türkiye Higher Specialization Training and Research Hospital, Cardiology Clinic, Ankara,
Education
2017 Karabük University, Faculty of Medicine, Department of Cardiology
2006 Türkiye Higher Specialization Training and Research Hospital, Cardiology Clinic
2001 Türkiye Higher Specialization Training and Research Hospital, Ankara, Cardiology
1996 Ankara University, Faculty of Medicine
Experience:
2023 -
Medipol Bahçelievler
2017 - 2023
Özel İstinye Üniv. Gaziosmanpaşa Medical Park Hopspital
2015 - 2017
DPÜ Evliya Çelebi Eğitim ve Araştırma Hastanesi
2012 - 2015
Süleyman Demirel Üniversitesi Tıp Fakültesi
2008 - 2011
Kırıkkale Devlet Hastanesi
2007 - 2007
Elazığ Eğitim ve Araştırma Hastanesi
2007 - 2008
Eskişehir Asker Hastanesi
2005 - 2007
Elazığ Karakoçan Devlet Hastanesi
2001 - 2001
Batman Beşiri İkiköprü Sağlık Ocağı
2001 - 2005
Dicle Üniversitesi Tıp Fakültesi İç Hastalıkları Ana Bilim Dalı
Education:
2015
Süleyman Demirel University Faculty of Medicine, Nephrology
2005
Dicle University Faculty of Medicine, Internal Medicine
2000
Ege University, Faculty of Medicine
Title: Prospective Surveillance Study For Risk Factors Of Central Venous Catheter-Related Bloodstream Infections.
Title: Serum C-Reactive Protein (CRP) Levels And Insulin Resistance In Non-Obese Women With Polycystic Ovarian Syndrome, And Effect Of Bicalutamide On Hirsutism, CRP Levels And Insulin Resistance.
Title: Spontaneous Rupture Of The Spleen In A Hemodialysis Patient.
Title: The Effects Of Viral Cirrhosis On Cardiac Ventricular Function.
Title: Multipl Atrial Thrombus Developing in a Splenectomized Thalassemia Major Patient.
Title: Fenofibrate Treatment In Two Adults With Crigler-Najjar Syndrome Type II.
Title: Hypochromic Microcytic Anemia Presenting with Thalassemia Minor and Lead Intoxication.
Title: The Effects Of Allopurinol On Metabolic Acidosis And Endothelial Functions In Chronic Kidney Disease Patients.
Title: Vaginal Leakage Of Peritoneal Dialysate In A Peritoneal Dialysis Patient.
Title: The Effect Of Biocompatible Peritoneal Dialysis Solutions On Neutrophil To Lymphocyte Ratio.
Title: Utility Of Serum Creatinine/Cystatin C Ratio In Diagnosis Of Kidney Dysfunction In Type 2 Diabetes Mellitus Patients.
Title: The Relationship Between Serum C-Reactive Protein Levels And Insulin Resistance In Non-Obese Women With Polycystic Ovary Syndrome.
Title: The Effects Of Viral Cirrhosis On Cardiac Ventricular Function.
Title: Multipl Atrial Thrombus Developing in a Splenectomized Thalassemia Major Patient.
Title: Hypochromic Microcytic Anemia Presenting with Thalassemia Minor and Lead Intoxication.
Title: The Effects Of Allopurinol On Metabolic Acidosis And Endothelial Functions In Chronic Kidney Disease Patients.
Title: Vaginal Leakage Of Peritoneal Dialysate In A Peritoneal Dialysis Patient.
Title: The Effect Of Biocompatible Peritoneal Dialysis Solutions On Neutrophil To Lymphocyte Ratio.
Title: Utility Of Serum Creatinine/Cystatin C Ratio In Diagnosis Of Kidney Dysfunction In Type 2 Diabetes Mellitus Patients.
Academic Details
Faculty / University
19 Mayis University, Faculty of Medicine, Samsun – Turkey
Date of Graduation
1992
Postgraduate Training
Institution: Department of Radiology, Faculty of Medicine, Erciyes University, Kayseri – Turkey
Supervisor in Charge of Training: Mustafa Ozturk
Training Period: From 1993 to 1998
Title of Thesis: Evaluation of Lower Extremity Artery-Occlusive Disease by MR Angiography
Accreditation
Radiology Specialist: 1998, The Ministry of Health of Turkey
Associate Professor: 2003, Interuniversity Committee
Academic Experience
Residency: Department of Radiology, Erciyes University, Kayseri – Turkey (1993 to 1998)
Private Practice: Maternal and Children Hospital, Sivas – Turkey (1998–2000)
Academic Positions:
2000 to 2003: Assistant Professor of Radiology, Firat University, Elazig – Turkey
2003 to 2009: Associate Professor of Radiology, Firat University, Elazig – Turkey
2009 to 2010: Professor of Radiology, Firat University, Elazig – Turkey
2010 to 2015: Professor of Radiology, Chairman, Bezmialem Vakif University, Istanbul – Turkey
2015 to 2016: Professor of Radiology, Chairman, Yeditepe University, Istanbul – Turkey
2017 to Present: Professor of Radiology, Interventional Radiology Unit, Bahçelievler Medical Park Hospital, Altınbaş University, Istanbul – Turkey
Fellowship
Institution: Department of Radiology, University Hospital of Cleveland, Case Western Reserve University, Cleveland, Ohio, USA
Duration: 2004 to 2005
Position: Research Fellow – Ultrasound & CT (Body)
Professional Memberships
-Turkish Society of Radiology
-Medical Ultrasound Society of Turkey
-Turkish Society of Radiology, Abdominal Radiology Study Group
-ESGAR – European Society of Gastrointestinal and Abdominal Radiology (Fellow)
-ESUR – European Society of Urogenital Radiology (Fellow)
-ESR – European Society of Radiology
-Turkish Society of Magnetic Resonance
-Turkish Society of Radiology, Urogenital Radiology Study Group
-Turkish Society of Interventional Radiology
-Korean Society of Radiology (International Member)
-Radiological Society of North America (RSNA) – Corresponding Member
Prizes and Awards
European Congress of Radiology (ECR) 2002, Vienna – Image Interpretation, 3rd Prize
Interpretation Corner of European Radiology 2003 – 2nd Prize
Cases of the Day – ESGAR 2007, Lisbon, Portugal – 2nd Prize
Cases of the Day – ESGAR 2009, Valencia, Spain – 1st Prize
Experience
2018
Private Istanbul Medipol Hospital
2018
Medipol University Camlica Hospital
2018
Medipol Camlica Hospital
2013 - 2018
Medipol Mega University Hospital
2011 - 2013
Yuzuncu Yil University Hospital
2010 - 2011
Gulhane Military Medical Academy
2010 - 2013
Yuzuncu Yil University Hospital
2010 - 2011
Gulhane Military Medical Academy
2010 - 2011
Gulhane Military Medical Academy
2010 - 2013
Yuzuncu Yil University Faculty of Medicine
2009
University of Toronto SickKids Hospital
2004 - 2008
Private Van-Etfal Pediatric Diseases
1999 - 2004
Yuzuncu Yil University Hospital
Education
2010
Yuzuncu Yil University, Pediatric Nephrology
2004
Yuzuncu Yil University, Pediatrics
1998
Ege University, Faculty of Medicine
Experience
2018 - 2022
Health Sciences University – Şişli Hamidiye Etfal Training and Research Hospital
2016 - 2018
Diyarbakır Memorial Dicle Hospital Cardiology Clinic
2010 - 2010
Dicle University Faculty of Medicine, Department of Cardiology
2010 - 2016
Private Veni Vidi Hospital, Cardiology Clinic Supervisor
2006 - 2010
Dicle University Faculty of Medicine, Department of Cardiology
2005 - 2006
Urfa State Hospital
1999 - 2005
Turkey High Specialization Training and Research Hospital
1998 - 1999
Duruca Health Center
Education
2018
Health Sciences University, Cardiology
2010
Dicle University, Department of Cardiology
2005
Cardiology Turkey High Specialization Training and Research Hospital, Medical Specialization
1998
Ege University, Faculty of Medicine
Dr. Fatih Gumus is a Cardiovascular Surgery Specialist at Memorial Göztepe Hospital (2025–present). He previously served at Memorial Ankara (2023–2025) and Bartın State Hospital (2018–2022). He completed his Cardiovascular Surgery residency at Ankara University (2013–2018). He was a Clinical Fellow at Johns Hopkins University in 2010. He observed Vascular Surgery at the Cleveland Clinic in 2014. He earned his MD from Hacettepe University (English program, 2005–2012).
He has authored five peer-reviewed papers on minimally invasive valve surgery, right heart and LVAD assessment, and DVT therapy. He is a member of EACTS, ISMICS, MIRC, the Turkish Society of Cardiovascular Surgery, and the Turkish Society of Vascular Surgery. He served as faculty at the 19th ICCVS. He gave oral talks at EACTS 2017, ISMICS 2018, and UIP 19th.
Dr. Mahir Cengiz is a Professor of Internal Medicine and an Internal Medicine Specialist. He works at Memorial Göztepe Hospital (2025–present). He previously served at Istanbul Aydın University–Medical Park Florya (2022–2025). He held roles at Biruni University Hospital as Lecturer and Chief Physician (2018–2022). Earlier, he was a Lecturer at Istanbul University–Cerrahpaşa Faculty of Medicine (2013–2018) and Chief Physician at Şarkışla State Hospital (2012–2013).
His track record includes 12 years as a lecturer and 5 years as a chief physician. He earned his MD from Istanbul University, Istanbul Faculty of Medicine (2000–2006). He completed an Internal Medicine residency at Istanbul University–Cerrahpaşa (2006–2011). He served as Chief Resident in Internal Medicine (2013–2017). He became an Associate Professor in 2017 and a Professor in 2022.
Dr. Deniz Goren is a specialist in internal medicine and hematology at Memorial Göztepe Hospital (Istanbul). Dr. Goren previously worked at Memorial Şişli, Istanbul Florence Nightingale, and Eskişehir Yunus Emre State hospitals.
Dr. Goren served as an associate professor at Demiroglu Bilim University from 2020 to 2024 and earlier as an assistant professor from 2017 to 2020. Dr. Goren completed a hematology subspecialty at Eskişehir Osmangazi University. Dr. Goren completed an internal medicine residency and earned an MD at Ankara University. Dr. Goren later completed a postdoctoral fellowship at Harvard Medical School and the Joslin Diabetes Center.
Awards include TÜBİTAK 2219, the Turkish Hematology Association Young Participant and Fuat Aydınlı Young Researcher awards, and the SOHO Young Investigator Grant. Dr. Goren has published 32 international and 14 national peer‑reviewed articles and delivered 88 presentations. Dr. Goren completed the EBMT International Transplant Course, the Lymphoma Master Class, and the Advanced Life Support Course.
Dr. Aygul Aliyeva Onen is a specialist in obstetrics and gynecology at Memorial Göztepe Hospital (2025–present). She previously worked at Medical Park Göztepe (2023–2025) and at Celal Bayar University Hafsa Sultan Hospital (2018–2023). She completed her obstetrics and gynecology residency at Celal Bayar University Faculty of Medicine (2018–2023). She graduated from Azerbaijan Medical University (2010–2016) and completed an observership at Ege University (2017).
Professional memberships include the Istanbul Medical Chamber, the Turkish Society of Gynecology and Obstetrics, and the Pelvic Floor and Cosmetic Gynecology Association. Additional training includes Current Approaches in Cosmetic Gynecology (TJOD Izmir); CCI HADYEK Laparoscopic Gynecologic Surgery; Sexual Health Federation—Vaginismus and Dyspareunia; the 1st–3rd International Pelvic Floor and Cosmetic Gynecology Congresses; and the TJOD Obstetric Simulation Course.
Dr. Ahmet Mutlu is an ENT specialist at Memorial Göztepe Hospital (2025–present). He holds European Board certification in ORL‑HNS (FEBORL‑HNS, 2018) and National ENT Board certification (2016). Education: MD, Kocaeli University (2011). ENT residency, Kocaeli University (2011–2016). Master’s in Audiology, Başkent University (2017).
Previous posts: Istanbul Medeniyet University (2019–2025). Üsküdar State Hospital (2016–2019). Kocaeli University (2011–2016). Training: Otology‑Neurotology School (2019–2020). Laryngology & Phoniatrics School (2021–2022). Portmann Institute microsurgery course (2013). Memberships: Turkish ORL‑HNS, Istanbul ENT Assoc., Otology‑Neurotology, Phoniatrics, Turkish Medical Association.
Dr. Mehmet Semih is a cardiology specialist at Memorial Göztepe Hospital (2025–present). He previously served as a specialist at Koşuyolu High Specialty Training and Research Hospital (2024–2025) and Sivas Numune Hospital (2023–2024). He completed his cardiology residency at Istanbul University Cerrahpaşa (2018–2023). He earned his MD at Istanbul University (2006–2012).
He is a member of the Turkish Society of Cardiology, the European Society of Cardiology, and the European Heart Rhythm Association. He has delivered oral case presentations at EHRA and TKD congresses. He also completed the TKD Bifurcation Lesions Management Course and the TKD Echocardiography Symposium.
Dr. Tolga Sinan Guvenc is a cardiologist at Memorial Göztepe Hospital (2025–). He previously worked at VM Medical Park Pendik (2019–2025) and at Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital (2014–2018).
He has authored over 200 scientific articles and book chapters. He serves on the Editorial Board of Scientific Reports.
He is a Fellow of the ESC Heart Failure Association. He is also a member of the Turkish Society of Cardiology, the European Society of Cardiology, and Sigma Xi.
Advanced training includes a clinical fellowship in the Advanced Heart Failure Unit at the University of Alberta. He also served as a visiting scientist at the Echocardiography Station at the University of Alabama at Birmingham. Education: MD, Istanbul University Cerrahpaşa (English). Cardiology residency, Dr. Siyami Ersek.
Dr. Sabahattin Gunduz is a cardiologist at Memorial Göztepe Hospital (2025–present). He previously worked as a cardiology specialist at VM Medical Park Pendik Hospital (2018–2025). He also served at Kartal Koşuyolu Heart Hospital (2014–2018), Tuzla State Hospital (2012–2014), and Ümraniye Training and Research Hospital (2010–2012).
He is a Professor of Cardiology at Bahçeşehir University, Faculty of Medicine (2022). He became an Associate Professor at Istanbul Kartal Koşuyolu High Specialty Training and Research Hospital (2017). He completed his cardiology residency at the same institution (2005–2009). He earned his MD from Istanbul University (1999–2005).
Professional memberships: TTB, TKD, ESC, EAPCI, EACVI.
Dr. Muslim Sahin is a cardiology specialist at Memorial Göztepe Hospital (2025–present). He previously worked at VM Medical Park Pendik Hospital (2018–2025), Kartal Koşuyolu High Specialty Training and Research Hospital (2010–2018), Kartal Yavuz Selim State Hospital (2007–2010), and Kayseri Military Hospital (2006–2007).
He completed his cardiology residency at Maltepe University Faculty of Medicine (2001–2005). He earned his MD from Istanbul University Cerrahpaşa Faculty of Medicine (1995–2001).
He is a member of the Turkish Medical Chamber, the Turkish Society of Cardiology, the EuroCTO Club, and the European Society of Cardiology. He has completed training in TAVI, MitraClip, and renal denervation.
Dr. Ahmet Ekmekci is a cardiology specialist at Memorial Göztepe Hospital in Istanbul, since 2025. He earned the title of Associate Professor of Cardiology (Doçent) in 2014.
He served as Chief Assistant in Cardiology at Dr. Siyami Ersek Training and Research Hospital in 2010. He completed his cardiology residency at the same hospital in 2009. He finished his internal medicine residency at the Istanbul Faculty of Medicine from 2002 to 2007. He received his MD from Istanbul University, Istanbul Faculty of Medicine, in 2002.
He is a member of the Turkish Society of Cardiology, the European Society of Cardiology, and the European Heart Failure Association (Gold Member). He is also a member of the Istanbul Internal Medicine Association, the Stem Cell and Cellular Therapies Association, the Istanbul Medical Chamber, and the Turkish Medical Association. He served on the Board of the Turkish Society of Cardiology Heart Failure Working Group in 2016.
Dr. Hidayet Demir is a Cardiovascular Surgery Specialist at Memorial Göztepe Hospital (2025–). He previously served as an Assistant Professor at Okan University Hospital (2021–2025). He was also a specialist at Ağrı I. Ç. University Training and Research Hospital (2019–2021). Earlier, he worked at City Health Group as Medical Director and ECMO Specialist (2015–2018). He later served as CEO (2018–2025).
Education: MD, Istanbul University Cerrahpaşa (2007–2013). Cardiovascular Surgery residency, SBÜ Kartal Koşuyolu (2013–2019). Beating‑Heart Coronary Bypass observer, Royal Brompton & Harefield Hospital (2018).
Memberships: TKDCD, UVECD, Turkish Medical Association, ESVS, EACTS. Courses: MIRC 2017 (minimally invasive/robotic). UVECD & EVC 2017 Venous Workshop. European Vascular Course 2017: Open Abdominal Aortic Aneurysm Treatment. TKDCD advanced aortic surgery. ESVS aortic arch techniques.
Dr. Haluk Caglar Karakaya is a specialist in cardiovascular surgery at Memorial Göztepe Hospital in Istanbul (2025–). He previously worked as a specialist at the University of Health Sciences Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital (2022–2025). He completed residency training at the University of Health Sciences Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital and at Ankara University. He earned his MD from Hacettepe University (English program).
Professional memberships: European Society for Cardiothoracic Surgery (EACTS), European Society for Vascular Surgery (ESVS), Turkish Society of Cardiovascular Surgery, National Society of Vascular and Endovascular Surgery.
Continuing education: 27th European Vascular Course (2024); Cardiac Memorial Robotic/Minimally Invasive Cardiac Surgery Summit (2024); 18th Turkish Cardiovascular Surgery Congress (2024); 24th ASVS Congress (2023); TKDCD Endovascular Course (2023); “Grey Areas in Vascular Surgery” Symposium (2023); Basic and Advanced Doppler Ultrasonography Course (2023).
Dr. Berrak Beyoglu Oruc is a specialist in obstetrics, gynecology, and IVF at Memorial Göztepe Hospital (2025–). She previously worked at Bahçeşehir University Medical Park Göztepe Hospital and Ağrı Training and Research Hospital. She also served as a research physician in gynecologic oncology at Bologna University S. Orsola (2022).
Accreditations and key training include: Certified ART Clinical Training, American Hospital (2025); GESEA MIGS Level 1 – European Certified Minimal Invasive Gynaecological Surgeon (2024). She also completed the Harvard Women’s Health and Menopause Course (2025), ESGO ORSI Robotic Surgery (2022), ESGO Masterclass (2022), and TMFTP Second Trimester Ultrasound (2024).
Awards: First prize, oral presentation—Transperineal Ultrasonography in Predicting Operative Delivery (13th Maternal–Fetal Medicine and Perinatology Congress, 2023). Third prize—Aortic Dissections (2016). Memberships: ISUOG, ESGE, MIJID, TJOD.