Education and Expertise

• 1979 - DR - ANKARA UNIVERSITY FACULTY OF MEDICINE
• 1984 - SPECIALIST DR. - EGE UNIVERSITY FACULTY OF MEDICINE INTERNAL DISEASES
• 1992 - SUB-BRANCH SPECIALIST DR. - EGE UNIVERSITY FACULTY OF MEDICINE GASTROENTEROLOGY CLINIC
• 1994 - ASSOC. PROFESSOR - EGE UNIVERSITY
• 2000 - PROFESSOR DR. - EGE UNIVERSITY

Diseases

• Inflammatory Bowel Diseases (Ulcerative Colitis, Crohn's Disease)
• Large Intestine Diseases
• Liver Diseases
• Liver Inflammation
• Liver Cancer
• Fatty Liver
• Stomach Diseases
• Pancreatitis
• Pancreas Cancer
• Digestive System Diseases
• Digestive system cancer
• Cirrhosis
• Diseases of the Esophagus

Treatment Methods

• Balloon Stent Applications in Achalasia
• Spark Plug Applications
• ERCP
• Endoscopic Treatments for Digestive System Canal Strictures
• Endoscopic Treatment of Digestive System Polyps
• Stent 

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)

教育と上級トレーニング コース

• 1989年 - ヘブライ大学で高等医学教育を受ける;
• 1995年 - ハダッサ大学病院で内科および消化器科の研修を修了する。
• 2001年 - 2002年 - ニューヨークのシナイ医学部肝疾患部門でスコット・フリードマン教授とのインターンシップを行う。

現在、リファート・サファディ教授は肝疾患治療の分野で優れた専門家であり、体細胞移植センターの開発委員会のメンバーで、ハダッサ医療センター肝疾患ユニットの責任者です。教授は複数の国際肝研究協会のメンバーであり、専門分野で多くの論文を執筆しています。サファディ教授は、科学医学ジャーナル「Clinical Science」の編集委員会メンバーです。

リファート・サファディ氏は、多くの科学賞の受賞者です。特に彼は、mRNAを用いた肝線維化の免疫調節過程の研究でハダッサ賞を繰り返し受賞しています。同じ分野での業績により、教授はシャロン・ドンスキー賞およびイスラエル消化器病学と肝臓学協会の賞も受賞しました。

Dr. José Miguel Esteban López-Jamar is a gastroenterologist. He has led the Digestive Endoscopy and Digestive Diseases Units at Hospital Ruber Internacional since 2007. He has more than 20 years of experience. He is a Spanish pioneer in endoscopic ultrasound (EUS). His work covers diagnostic and interventional endoscopy. He uses innovative, minimally invasive techniques for complex gastrointestinal disease.

He was Head of Endoscopy (2008–2012) and Head of Endoscopic Innovation (2012–2014) at Hospital Clínico San Carlos. He completed international training at AMC Amsterdam, Institut Paoli-Calmettes in Marseille, and Zhongshan Hospital in Shanghai. He holds an MD and a PhD from the Complutense University of Madrid. He is a specialist in gastroenterology. He takes part in multicenter European studies and clinical trials. He is a member of SEPD, SEED, and ESGE.

Viral hepatitis A, B, C, D

Cirrhosis

Autoimmune liver diseases

Fatty liver

Diseases of the stomach and intestines

Diseases of the pancreas

Services in the field of biological medicine:

Treatment of various drug-induced liver poisonings, viral hepatitis (hepatitis B, hepatitis C), hepatosis, hepatosterosis, autoimmune hepatitis.

EDUCATION: Azerbaijan Medical University

EXPERIENCE:

2009-2010 General practitioner in a private clinic.

Clinic of biological medicine since 2011.

TRAINING AND MEMBERSHIP:

In 2013-2014, internship on viral hepatitis at the Department of Microbiology and Infection, as well as at the Department of Gastroenterology, Faculty of Medicine, Ege University, Turkey.

Ankara Hacettepe Hospital

Gastroenterology

Pendik Medipol University Hospital

Education

1999 Karadeniz Technical University, Gastroenterology

1997 Atatürk University, Internal Diseases Professorship

1992 Atatürk University, Internal Diseases Associated Professorship

1985 Atatürk University, Internal Diseases Specialist

1981 Atatürk University Faculty of Medicine

Publications

1- Nihat Okçu Gülçin Polat, Arif Yılmaz, Mehmet Koruk, The demographic features of gastric cancers in Erzurum(Eurasian J Med 2000; 32: 63-65)

2- An Evaluation of Upper Gastrointestinal Bleeding Cases. Clinical Sciences-Doctor.2000, - E.akarsu,N.Okçu,et Ark.Northeast Anatolia 6:4:435-438

3-N.Okçu, A.yılmaz. İ.kiki,MDonuk, C.gündoğdu, H.uzunismail. Our Diagnostic Upper Gastrointestinal Endoscopy Results. Atatürk University Medical Journal 1997,29 (2):486

4-N. Okçu, M.gündoğdu, MD onuk, İ.kiki, l.cerrahoğlu, k.yılmaz, I. çapoğlu. The Role of Misoprostol in Preventing Gastroduodenal Lesions in Patients Using Nonsteroidal Anti-Inflammatory Drugs (NSAIDs). Atatürk University Medical Journal 1997,29 (2):453-455.

5-N.Okçu, A. Öz, MD Onuk, E.Akarsu, B. Tekin, Hz Tonbul, H.Kaya. Plasma Fibronectin Levels in Chronic Active Hepatitis and Decoction of Liver Parenchymal Insufficiency and Their Relationship with Liver Functional Status. Turkish J. Gastroenterol 1995;27(4): 422-426.

6-N.Okçu, Tahir Buran, MD Onuk, A. Yılmaz, E.Akarsu, G. Akçay. Prevalence of Helicobacter Pylori in Patients with Duodenal Ulcer in Erzurum and Surrounding Area. Turkish J. Gastroenterol 1995;27(4): 447-450.

7-N.Okçu, bs awake, e. akarsu, e. bakan, z. tonbul. Importance of Carbohydrate Antigens (CA-19-9, CA-125), Carcinoembryonic Antigen (CEA) and Alkaline Phosphatase in Gastric and Colorectal Cancers. Turkish J. Gastroenterol 1995;6:467-471.

8-N. Okçu, MD Onuk, E. Akarsu, H. Doğan, C. Gündoğdu. Major Risk Factors in Patients with Hepatocellular Carcinoma in Our Region. Gastroenterology 1994;5(2):154-157

9-N.Okçu, md. Onuk, e. akarsu, h. doğan, c.gündoğdu, tahir buran. Frequency of gastric carcinoma in Erzurum region, endoscopic and histological features. Gastroenterology 1994;5(2):263-267.

10-N. Okçu, MD Onuk, Tahir Buran, E. Akarsu, MA Çiftçioğlu. Frequency of Helicobacter Pylori in Nonspecific Gastritis Cases in Erzurum Province. Gastroenterology 1994;5(2):211-213.

11-N.Okçu, MD Onuk, Ö. Ünal, E. Akarsu, L. İncesu, K. Akgöz. Diagnostic Value of Ultrasound-Guided Fine Needle Aspiration Biopsy in Intra-Abdominal Mass Lesions. Gastroenterology 1993;4(1):166-68.

12-NOkçu, md. onuk, m. polat, a. yılmaz, m. gündoğdu, m. paç. Budd-Chiari Syndrome (2 Cases). Turkish J Gastroenterhepatol 1993; 4(1):77-80.

13-N.Okçu, H. Koçak, MD Onuk, M. Gündoğdu, E. Bakan, A. Yılmaz, A. Başoğlu, A. Ateş, F.A. Paç. The Effect of Atrial Pressure Changes and Cardiac Nerves on Plasma Atrial Natriuretic Peptide (ANP) Levels. Vascular Surgery 1993; 27(2): 128-132

15-N.Okçu, MD Onuk, A.Yılmaz, M. Gündoğdu, T. Buran. Effects of Omeprozole and Ranitidine on Peptic Ulcer Healing. Doğa-Tr.J. of Medical Sciences 1992;16:657-658.

16-N. Okçu, Mr. Yiğitoğlu, B. Adam, E. Bakan. The Effect of Digixin on Plasma Atrial Natriuretic Peptic Level in Patients with Congestive Heart Failure. S.Ü. Medical Faculty Journal 1991;7(2):243-247..

17-N.Okçu, A. Yılmaz. The Effect of Histamine H2 -Receptor Antagonists in Upper Gastrointestinal System Bleeding. Endoscopy Journal 1991;2(4):17-23.

18-N.Okçu, E. Bakan, B. Adam, A. Yılmaz, Mr. Yiğitoğlu. Sex Hormones and Sex Hormone Binding Globulin Levels in Patients with Chronic Hepatitis and Liver Cirrhosis (Letter to the Editor). Nature-Tr. J. Of Medical Sciences 1991;15:1-2.

19-N.Okcu Ömer Yılmaz.Helıcobacter pylori and related gastrointestinal system diseases. Turkish Clinics JMed Sci. 2013;33(3):806-13

20-Nihat Okçu, Ömer Yılmaz, Hakan Dursun, Gülçin Polat. The relationship between dyspeptic symptoms, nutritional habits, endoscopic and histological findings (Eurasian J Med 2006; 38: 13-17)

21-Mehmet Bilici,1Nihat Okcu,1Kerim Cayir,1Ibrahim Pirim,2Salim B. Tekin,1andCemal Gundogdu3 - Distribution of HLA Tissue Groups in Patients with Gastric Cancer Eurasian J Med. 2010 Apr; 42(1): 9.11.

22-Nihat Okcu,Abdulhalim Bak,Mehmet Sari,Mehmet Arslan,Sait Kapicioglu:The fibroblast proliferation, relationship of hepatocyte growth factor (HGF) and interferon-A2A Gastroenterology April 2000Volume 118,Issue 4, Part 2, PageA1404

23-Kubra Kaynar,Sait Kapicioglu,Mehmet Sari,Nihat Okcu,Abdulhalim Baki. The effect of fish oil on stress ulcer prophylaxis GastroenterologyVolume 118, Issue 4, Part 2, PageA1255

フェルリッチ博士は、彼の専門分野でのリーディングスペシャリストです。フェルリッチ教授は1998年にウィーンでの医学学位を取得しました。2000年から2006年の間、彼はウィーン総合病院で内科のインターンシップを完了しました。2006年から2008年まで、医師はウィーン総合病院で胃腸病学および肝臓病学の追加の専門訓練を受け、2008年から2010年まで - 内部蘇生の専門家としても訓練されました。

研究賞と奨学金: 

• ベストアブストラクト賞 UEGW 2003, 2005, 2008, 2009, 2010, 2012 

• ÖGGH内視鏡グループのポスター賞 2003 

• ÖGGHのフェリング賞 2006 •ベストナショナルアブストラクトUEGW 2010（ノミネート） 

• ÖGGHによる「消化器病学におけるUEGWライジングスター」2012の全国候補 

• オーストリア中央銀行2005周年記念基金 

• オーストリア内科学会の2011年シュコダ賞 

トレーニングと臨床作業: 

• 1992-1998 ウィーン大学での医学研究、UCLA（1ヶ月）、ロサンゼルスとペンシルベニア大学、フィラデルフィア（3ヶ月）での研修を含む 

• 1999-2000 胃腸病学/インターベンショナル内視鏡部門の研究助手 

• 2000-2006 内科の専門家としての訓練 

• 2006-2008 胃腸病学および肝臓病学の追加専門家 

• 2008-2010 内部集中治療の追加専門家 

• 2003年にウィーン大学医学部での肝臓血行動態研究所と肝硬変のための外来診療所の設立と管理 

• 2018年にウィーンバルメルツィゲン・ブルーダー病院の内科I部門の責任者

Dr. Cagdas Erdogan is a gastroenterologist at Ankara Etlik City Hospital. He trained in Internal Medicine and Gastroenterology. He earned his MD from Dokuz Eylul University. He completed his Internal Medicine residency from 2014 to 2019. He then completed a Gastroenterology fellowship at Ankara City Hospital from 2019 to 2022. His clinical focus includes advanced endoscopy (ERCP, EUS, EMR, ESD, POEM, EGD, colonoscopy, double-balloon enteroscopy), inflammatory bowel disease, and hepatology.

He has about 40 publications. His work appears in The Turkish Journal of Gastroenterology, Scientific Reports, Endoscopy, and Digestive Diseases and Sciences. Notable studies address vedolizumab in IBD and prophylaxis for post-ERCP pancreatitis. He also reported a 13-year Crohn’s cohort comparing infliximab and adalimumab. Additional work covers outcomes with an adalimumab biosimilar and innovative endoscopic therapies (MCA via double-balloon enteroscopy, holmium laser for Bouveret syndrome, POEM for Zenker’s diverticulum, and ESD for esophageal papillomatosis).

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

教育情報：

1984-1990 イスタンブール大学セラハパシャ医学部、医学博士

1991-1992 アンカラヌムネトレーニング・リサーチホスピタル、内科第五クリニック

1992-1995 ハイダルパシャヌムネトレーニング・リサーチホスピタル、内科専門家第三クリニック

1998-2002 五月ハイダルパシャヌムネトレーニング・リサーチホスピタル、専門家胃腸科クリニック。

専門的経験：

ユニメッドプライベートポリクリニック 2005-2012

ホスピタリウムチャムリカ 2005-2012

ハイダルパシャヌムネトレーニング・リサーチホスピタル-胃腸科アシスタントおよび専門家 (1998-2005)

シシュリエトファルトレーニング・リサーチホスピタル、内科専門家 1996-1998

シシュリエトファル教育および研究

シレ国立病院 (1996 6ヶ月一時任務)

ハイダルパシャヌムネ病院内科 1993-1995

アンカラヌムネトレーニング・リサーチホスピタル内科 1991-19 1993.

専門分野 :

食道胃十二指腸鏡検査

大腸内視鏡検査

柔性S字結腸直腸鏡検査

クロモエンドスコピー

食道静脈瘤結紮

食道静脈瘤硬化療法

アカラシアバルーン拡張術

上部および下部消化管出血におけるヒータープローブおよび注射による治療

上部および下部消化管狭窄をバルーンおよびブジーで拡張

上部および下部消化管ポリープの除去（ポリペクトミー）

異物除去

経皮内視鏡的胃瘻造設術（PEG）

腹部内のコレクションの経皮ドレナージ

肝針生検。

Dr. Abu Shamsiya Rami Nuamanovych is a specialist in general and laparoscopic surgery, oncology, and ultrasound diagnostics. He is a Candidate of Medical Sciences, an associate professor, and a doctor of the highest category. Dr. Nuamanovych is a member of the Ukrainian Association of Bariatric Surgeons and the World Organization of Bariatric Surgeons (IFSO).

He works as a WHO consultant on laparoscopic surgery. He is also President of the Association of Arab Doctors of Ukraine. Dr. Nuamanovych has performed thousands of surgeries, including hernia repairs, bariatric procedures, and cancer operations. His skills are recognized internationally. He speaks English and Arabic fluently.

准教授アリ・ソルマズ博士は、20年以上の経験を持つ一般外科および肥満外科専門医です。一般外科、代謝外科、肥満外科を専門としています。トルコ有数の高等教育機関であるマルマラ大学にて医学教育および外科研修を修了しました。准教授の称号はバージュラル教育研究病院にて取得しました。

ソルマズ博士は、チャムルジャ・エルデム病院およびバージュラル教育研究病院をはじめとする複数の医療機関において、数千件の手術を執刀してきました。腹腔鏡手術および低侵襲外科の分野において高い技術を有しており、患者の早期回復と良好な治療成績に貢献しています。

積極的に学術研究活動に従事しており、複数の学術誌の編集委員会に参加しています。IFSO（国際肥満・代謝外科連盟）、トルコ外科学会、および肥満代謝外科学会を含む専門職業団体の会員です。

パレプ博士は、上部胃腸（GI）および体重減少手術において17年の経験を有しています。彼は、バンド付きバイパス、バンド付きスリーブ胃切除術、およびインドにおける体重減少手術としてミニ胃バイパスについて、米国ロサンゼルスで訓練を受けた最初の外科医の一人です。また、彼はスリーブ胃切除術と十二指腸空腸バイパスを実施しており、体重超過と特に菜食主義患者における2型糖尿病の解消に関して優れた結果を持つ新しく人気のある体重減少手術です。彼はまた、イタリアでのロボット胃腸手術（2006-7）をトレーニングを受けており、より大きな精度とより高速な回復を備えた高度に発展した外科技術です。

肥満手術の経験: パレプ博士は、2009年以来、最小侵襲技術（ロボットおよび腹腔鏡手術）による体重減少と代謝の手術を実践しています。開始以来、手続きに関連する重大な罹患率を持つ患者はわずか1％であり、これは世界の基準に並んでいます。彼の糖尿病患者の90％以上がインスリンと経口抗糖尿病薬を治療しながら健康的な生活を維持しています。

ケースの範囲: これには、スリーブ胃切除術（従来型およびバンド付き）、ルーYバイパス胃手術（従来型およびバンド付き、胃バイパスとしても知られる）、ミニ胃バイパス、SG-DJB、 修正肥満手術（調整可能な胃バンドからスリーブ胃切除術へ、スリーブからミニ胃バイパスへ、ルーYバイパス胃手術とミニ胃バイパスのリバーサルと胃内バルーンを含む）。我々は、複雑で以前に失敗または複雑な体重減少手術症例を扱っています。彼の症例はさまざまな国際会議でライブで実証されています。肥満手術に加えて、パレプ博士は上部GI手術（胃、十二指腸、脾臓）および胆膵外科手術において高度な最小侵襲およびロボット技術による手術を実施するのに熟練しています。彼は国際的なジャーナルで複数の査読付き論文を発表しており、国内外で彼の関心分野について講義を行うよう招待されています。

肥満および最小侵襲手術部門: 肥満手術部門は、提供される包括的で高品質なケアのために、IEF（国際エクセレンス財団）によって優秀センターとして認定されています。部門には、肥満外科医、内分泌学者、栄養士チームおよびカウンセラーが含まれています。

Education

Undergraduate Faculty of Medicine Trakya University 1995-2001
Medical Residency Internal Medicine Uludağ University 2001-2006
Subspecialty Gastroenterology Medeniyet University, Göztepe Training and Research Hospital / Gastroenterology Clinic 2007-2011

Experience

Internal Diseases
Assistant doctor Uludağ University Faculty of Medicine
Internal Diseases USA 2001-2006

Internal Diseases Specialist Şanlı Urfa Mehmet Akif İnan
Training and Research Hospital 2007
(Jul-Dec)

Gastroenterology Minor
Assistant Istanbul Medeniyet Universityniversitesi
Göztepe Training and Research Hospital
Gastroenterology Clinic 2007-2011
Gastroenterology Specialist Sivas Numune Hospital 2011-2013

Gastroenterology
Chief Resident Health Sciences University
Ümraniye Training and Research Hospital 2013-2017

Assoc. Dr.
Chief Assistant of Gastroenterology Clinic University of Health Sciences
Ümraniye Training and Research Hospital
2017-2021

Assoc. Dr.
Gastroenterology Clinic Administrative Responsible University of Health Sciences
Ümraniye Training and Research Hospital
2021-2024

Scientific Memberships
 

Turkish Society of Gastroenterology
Turkish Association of Liver Research
Gastrointestinal Endoscopy Society

Awards

Third Prize for Oral Presentation, 32nd National Gastroenterology Week, Turkish Gastroenterology Association, November 25-29, 2015. Turkish J. Gastroenterol 2015;26(suppl 1): Oral Presentation 03, S:11
Oral Presentation Third Prize. XVth Eurasian Congress of Gastroenterology and Surgery, 27 apr-01 May 2016, Antalya P:89

Medical Interests and Activities 

Hepatic Cirrhosis and Portal Hypertension 

Hepatic Cancer 

Viral Hepatitides (Chronic Hepatitis B, C and Delta Infections) 

Alcoholic Chronic Liver Disease 

Non-Alcoholic Fatty Liver Disease 

Stomach and Duodenal Ulcer 

Gastrointestinal Hemorrhage (Ulcer and Varicose Vein Bleeding) 

Functional Digestive System Disorders (Irritable Bowel Syndrome, Functional Intestinal Obstruction and Diarrhea...) 

Inflammatory Bowel Diseases (Ulcerative Colitis, Crohn’s Disease) 

Malabsorption Syndromes (Celiac Disease and Alike) 

Gastrointestinal Tract Malignancies

Education and Experience 

Liv Hospital, Ulus, Gastroenterohepatology Department (2013 ...) 

Associate Professor of Medicine, Obligatory Service at Gastroenterology, Şanlıurfa Training and Research Hospital (2010 - 2012) 

Subspecialty in Gastroenterohepatology, Department of Gastroenterohepatology, İstanbul Faculty of Medicine, İstanbul University (2004 - 2010) 

Research Fellow, Physician, Department of Internal Diseases, 

İstanbul Faculty of Medicine, İstanbul University (1992 - 1998)

Memberships 

Turkish Association For The Study of The Liver 

Turkish Society of Gastroenterology 

Inflammatory Bowel Disease Society 

Internal Diseases Specialty Association

Dr. Homayoon is a Specialist Gastroenterologist with more than 11 years of experience in the fields of gastroenterology, hepatology, endoscopy, and colonoscopy, and more than 16 years of experience in the field of internal medicine. She has graduated from Shiraz University of Medical Sciences which is one of the best universities in Iran, and has one of the most equipped and advanced transplant centres in the world (Abu-Ali Sina Hospital). Dr. Homayoon has vast experience in treating patients with all types of gastrointestinal and hepatic disorders such as oesophageal motility disorders, all types of hepatitis, ulcerative colitis, Crohn’s disease, gastric and duodenal ulcers, constipation, H pylori infection, irritable bowel syndrome, fatty liver, cirrhosis, gastroesophageal reflux disorders, occult blood in stool, melena, fresh rectal bleeding, celiac disease, acute and chronic diarrhoea, food intolerance, flatulence, liver cysts, liver abscess, pancreatitis, and abdominal pain. She has expertise in upper gastrointestinal endoscopy, total colonoscopy, and liver elastography.

EXPERTISE:

• Upper GI endoscopy
• Total lower GI colonoscopy
• Liver fibro scan
• Oesophageal Gastric, small bowel, large bowel, pancreatic, hepatic, and biliary tract disease
• Gastrointestinal disorders
• Hepatic disorders
• Management of gastrointestinal emergencies

Education

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

Scientific Memberships

Turkish Pediatric Society
Turkish Society for Pediatric Gastroenterology Hepatology and Nutrition
ESPGHAN - European Society for Pediatric Gastroenterology Hepatology and Nutrition.

Medical Intrests

• 
  -Irritable (Restless) Bowel Syndrome
• -Food allergies associated with the digestive system
• -Constipation, faecal incontinence
• -Acute and chronic diarrhoea, malabsorption
• -Chronic abdominal pain
• -Gastroesophageal reflux disease
• -Celiac disease
• -Ulcerative colitis, Crohn's disease
• -Treatment before and after liver transplantation
• -Acute and chronic pancreatitis

Dr. Cheon Won Seok is the Director of the Department of Gastroenterology at Naeun Hospital. His expertise includes gastrointestinal diseases; upper gastrointestinal endoscopy and colonoscopy; polypectomy; ESD (Endoscopic Submucosal Dissection); small-bowel capsule endoscopy; digestive disorders; gastric and esophageal cancer; Helicobacter pylori infection; liver diseases; and inflammatory bowel disease, including Crohn’s disease and ulcerative colitis.

He graduated from Kyung Hee University College of Medicine. He completed his internship at Kyung Hee Medical Center and his internal medicine residency at Hallym University Sacred Heart Hospital. He later served as a Clinical Instructor in Gastroenterology at Chung-Ang University Hospital. He is a full member of the Korean Association of Internal Medicine and a life member of the Korean Society of Gastrointestinal Endoscopy. He is also a board-certified subspecialist in gastrointestinal endoscopy and serves as a medical advisor to KBS, MBC, SBS, JTBC, and MBN.

Dr. Holovyna Svitlana is a gastroenterologist and nutritionist with more than 23 years of experience. She is a member of the Association of Dietitians and Gastroenterologists of Ukraine. She also belongs to the European Association for the Study of the Liver (EASL) and the Association of Preventive and Anti-Age Medicine.

Dr. Holovyna diagnoses and treats gastrointestinal disorders, metabolic diseases, and nutrition-related issues. She uses an integrated and evidence-based approach. Her focus is on restoring digestive health, managing chronic conditions, and improving patient well-being with personalized diet and treatment plans.