INTERNAL MEDICINE / GASTROENTEROLOGIST AND HEPATOLOGIST
Graduation (M.D. From)
Bachelor of Medicine, Faculty of Medicine, Chiang Mai University
Certificates
Diploma in Internal Medicine, Faculty of Medicine, Chulalongkorn Memorial Hospital, Thai Red Cross Society
Diploma of Internal Medicine in Gastroenterology and Hepatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University
Current Positions
INTERNAL MEDICINE / GASTROENTEROLOGIST AND HEPATOLOGIST AT INTRARAT HOSPITAL
General Internal Medicine
Graduated (M.D. From)
Doctor of Medicine, Faculty of Medicine, Srinakharinwirot University
Working in general internal medicine treat patients with a wide range of acute and long-term medical conditions.
Certificates
Certificate of Internal Medicine, Faculty of Medicine, Bhumibol Adulyadej Hospital, Directorate of Medical Services, Royal Thai Air Force
Current Positions
General Internal Medicine doctor at Intrarat Hospital
Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology
Education:
Professional Experience:
Clinical Trials, Courses, Certifications:
Clinical Trials:
Courses:
Certifications:
Memberships:
Areas of Interest
Education
1980–1986: Istanbul University Cerrahpaşa Faculty of Medicine
1976–1980: Kabataş Boys' High School
Work Experience
Professional Training
Memberships
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Dr. Osman Aktas has been serving as a general surgeon at Ataşehir Avicenna Hospital since 2005. Born in Kayseri in 1960, he graduated with his medical degree from Ankara University in 1983. Following his graduation, he fulfilled his military service in medical units for two years. He completed his general surgery residency at GATA from 1986 to 1990. After specializing in general surgery, He held key positions as head of general surgery departments and chief physician in several prominent military hospitals, including Tatvan, Diyarbakır, Ankara, and Manisa.
Dr. Osman has had a special focus on endoscopic surgery since 1995. He received advanced training in laparoscopic surgery techniques in Germany and has successfully performed a wide range of laparoscopic procedures. His expertise extends to gallbladder surgery, abdominal wall and inguinal hernia repairs, appendicitis, reflux and stomach surgeries, as well as complex cases such as gastrointestinal tumors, intestinal obstructions, and various other intestinal diseases, all managed through minimally invasive methods.
In 2002, Dr. Osman transitioned to the private sector, where he broadened his practice to include modern treatments for anal diseases like hemorrhoids, fistulas, and fissures, utilizing advanced techniques such as laser therapy.
Dr. Osman is also recognized for his significant contributions to oncological surgery. He has a wealth of experience in the surgical treatment of various cancers, including breast and thyroid cancer, where he has implemented new treatment methods that reduce the risk of complications. His surgical expertise spans critical cancer surgeries, such as the Whipple procedure for pancreatic cancer, colorectal cancer resections, gastric cancer, and other complex malignancies. Additionally, his skills in metabolic surgery have led to lasting outcomes for patients suffering from obesity and diabetes, ensuring a better quality of life through sustained weight loss and reduced risk of diabetes.
With his vast experience and advanced skills in both laparoscopic and cancer surgeries, Dr. Osman remains at the forefront of surgical excellence, offering innovative and comprehensive care to all his patients.
Doctor: Kilis Merkez No. 1 Health Center, 2006-2008
Assistant Doctor: Mersin University Faculty of Medicine, 2009-2013
Specialist Doctor: Bingöl Genç State Hospital, 2013-2014
Minor Assistant: Akdeniz University Faculty of Medicine, 2014-2017
Minor Specialist: Erzurum Regional Training and Research Hospital, 2017-2018
Subspecialist: Gaziosmanpaşa Training and Research Hospital, 2018-2020
Attending Specialist: Başakşehir Çam and Sakura City Hospital, 2020-2022
Associate Professor: Başakşehir Çam and Sakura City Hospital, 2023
Associate Professor: Istinye University Medicalpark Gaziosmanpaşa Hospital, 2023-2024
Turkish Pediatric Society
Turkish Society for Pediatric Gastroenterology Hepatology and Nutrition
ESPGHAN - European Society for Pediatric Gastroenterology Hepatology and Nutrition.
Cumhuriyet University Faculty of Medicine, 2004
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine Residency, 2010
Karadeniz Technical University Faculty of Medicine Medical Oncology Residency, 2015
MD Andeson Cancer Center, USA, 2008
Sunnybrook Odette Cancer Center Breast Cancer Clinic, Canada, 2017
Moffit Cancer Center , USA 2022
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine, 2010
İdil State Hospital Internal Medicine Clinic, 2011
Karadeniz Technical Universityniversitesi Faculty of Medicine, Medical Oncology Clinic, 2015
Istanbul Göztepe Training and Research Hospital, Medical Oncology Clinic, 2018
Yeniyüzyıl University Gaziosmanpaşa Hospital, Medical Oncology Clinic, 2020
Ataşehir Medicana Hospital, Medical Oncology Clinic, 2022
Turkish Medical Association (TTB)
Turkish Society of Medical Oncology (TTOD)
European Society for Medical Oncology (ESMO)
American Society of Medical Oncology (ASCO)
Medical Intrests
Dr. Shawn Khodadadian, a best in class board certified gastroenterologist in NYC (GI doctor), is a specialist in the diagnosis and treatment of conditions of the gastrointestinal tract (the digestive tract from the mouth through anus, including the stomach and bowel), liver, pancreas and gall bladder.
Dr. Khodadadian is currently an attending physician at Lenox Hill Hospital in NYC. He is also a clinical instructor at NYU Langone Medical Center in NYC. Dr. Khodadadian has been voted by his peers as a Castle Connolly Top Doctor as well as New York Super Doctors and selected to the prestigious group of New York Magazine Best Doctors. Dr. Khodadadian’s private practice is located on NYC’s Union Square, Upper East Side and Midtown Manhattan.
Manhattan Gastroenterology
55 W. 17th St, Ste 102,
New York, NY 10011
Web Address https://www.manhattangastroenterology.com/
Union Square Office: https://www.manhattangastroenterology.com/gastroenterologist-union-square/
Our Location on the map: https://goo.gl/maps/iyoSymzvWrhou8EG8
https://plus.codes/87G8P2Q4+M4 New York
Nearby Locations:
Union Square
Greenwhich Village | East Village | West Village | Kips Bay | Stuyvesant Town | Gramercy Park | Rose Hill | Nomad | Murray Hill | Koreatown
10009 | 10010 | 10011 | 10014 | 10016 | 10017 | 10453
Working Hours: (Union Square)
Monday: 8:00 am - 7:00 pm
Tuesday: 8:00 am - 7:00 pm
Wednesday: 8:00 am - 7:00 pm
hursday: 8:00 am - 7:00 pm
Friday: 8:00 am - 5:00 pm
Saturday: CLOSED
Sunday: CLOSED
983 Park Ave, Ste 1D,
New York, NY 10028
Upper East Side Office https://www.manhattangastroenterology.com/gastroenterologist-upper-east-side/
Our Location on the map: https://goo.gl/maps/6m8pgy24rDzCxTxX6
https://plus.codes/87G8Q2HR+7R New York
Nearby Locations:
Upper East Side
Lenox Hill, Manhattan Valley, Upper West Side, Carnegie Hill, Yorkville
10021, 10028, 10065, 10075, 10128, 10029
Find Your Nearest Location Below:
Lower East Side
SoHo
Chinatown
Battery Park City
Tribeca
Lincoln Square
Hells Kitchen
Midtown West
Working Hours: (Upper East Side)
Monday: 8:00 am - 6:00 pm
Tuesday: 8:00 am - 6:00 pm
Wednesday: 8:00 am - 6:00 pm
Thursday: 8:00 am - 6:00 pm
Friday: 8:00 am - 6:00 pm
Saturday: CLOSED
Sunday: CLOSED
Payment: cash, check, credit cards.
Prof. Kıvanç Derya Peker completed his medical education and general surgery specialization at Istanbul University Istanbul Faculty of Medicine (Çapa). After his major specialization, he got his Gastroenterology Surgery Specialization from the Gastroenterology Surgery Clinic of Kartal Koşuyolu Yüksek İhtisas Training and Research Hospital by entering the top 3 in the minor examination.
During his sub-branch assistantship, he received a scholarship from the Turkish Surgery Association and worked at Mayo Clinic (Rochester, USA) Hepatopancreatobiliary Surgery Clinic and Obesity-Metabolic Surgery Clinic. After returning to Turkey, He was one of the founders of the Hepatopancreatobiliary Surgery unit at Bakırköy Dr. Sadi Konuk Training and Research Hospital. Peker provided Hepatopancreatobiliary Surgery training to general surgery residents and gastroenterology surgery residents in this hospital, which is accepted as a training unit by the Turkish HPB Association.
On the other hand; In order to learn stem cells, cancer biology, cellular properties of obesity and aging, he did his doctorate and thesis on aging at Istanbul University, Istanbul Faculty of Medicine (Çapa), Department of Medical Biology. Then, he moved to Başakşehir Çam and Sakura City Hospital to establish the Gastroenterology Surgery Clinic.
Especially in his career; He is interested in Pancreatic Diseases and Surgery, Gallbladder and Bile Duct Diseases Surgery, Liver Cancer Surgery, Stomach Cancer Surgery and Obesity-Metabolic Surgery. Peker has carried out many successful operations. He has performed over 400 pancreatic and gastric cancer surgeries, over 200 liver surgeries, many surgeries related to gallbladder and biliary tract diseases, obesity – metabolic surgery and endoscopic treatments, and kidney transplants so far. He is also interested in aging and stem cell treatments.
Education and Specialization
Work Experience
Expertise
Education and Specialization
Experience
Education and Specialization
Professional Memberships
• Turkish Medical Association
• Mediterranean Health Foundation
• Akdeniz University Development and Health Foundation
• Transplantation Organizations Coordination Association
• National Surgical Association
Education and Specialization
Experience
Education
Studied at the Medical School of the University of Giessen, Germany (1996 - 2003)
Specialization in Pathology (2009)
Specialization in Gastroenterology (2012)
Professional Experience
Resident in Special Pathology at Klinikum Offenbach, Germany (Jul 2003 - Aug 2009)
Resident in Gastroenterology at Klinikum Offenbach, Germany (Aug 2009 - Dec 2012)
Commissioner of the Gastroenterology Clinic at Klinikum Offenbach, Germany Apr 2010 - Aug 2014 (Director: Prof. Dancygier Apr 2010-Mar 2014, Prof. Ell Apr 2014 - Aug 2014)
Senior Attending Physician (Deputy Director) at the Department of Gastroenterology, Kreiskliniken Darmstadt-Dieburg Hospital, Germany Sep 2014 - Dec 2020 (Director Dr. Dotzel)
Director of the Gastroenterology Department at the German Oncology Centre in Limassol, Cyprus (Jan 2021 to date)