José Miguel Esteban Lopez-jamar

Dr. José Miguel Esteban López-Jamar

Gastroenterologist | Digestive Endoscopy Specialist
Head of Digestive Endoscopy Unit
Hospital Ruber Internacional

Professional Summary

Dr. José Miguel Esteban López-Jamar is a highly experienced gastroenterologist and one of the leading experts in digestive endoscopy in Spain. With more than two decades of clinical practice, he is recognized as a pioneer in ecoendoscopy (endoscopic ultrasound), contributing to both its diagnostic and therapeutic development.

He specializes in advanced endoscopic procedures, minimally invasive treatments, and the management of complex gastrointestinal diseases. His work combines clinical excellence, innovation, and participation in international research projects.

Areas of Expertise

• Advanced digestive endoscopy (diagnostic & interventional)
• Endoscopic ultrasound (EUS / ecoendoscopy)
• Barrett’s esophagus and early neoplasia
• Endoscopic treatment of obesity
• Gastrointestinal oncology diagnostics
• Inflammatory bowel disease (Crohn’s disease, ulcerative colitis)
• Functional digestive disorders (IBS, dyspepsia)

He is considered one of the pioneers of ecoendoscopy in Spain and has implemented multiple innovative endoscopic techniques.

Professional Experience

• Head of Digestive Endoscopy Unit & Digestive Diseases Unit
  Hospital Ruber Internacional
  (2007 – Present) 
• Head of Endoscopy Unit
  Hospital Clínico San Carlos, Madrid
  (2008 – 2012) 
• Head of Endoscopic Innovation Unit
  Hospital Clínico San Carlos, Madrid
  (2012 – 2014) 
• International training and clinical experience at:
  • Academic Medical Center (Amsterdam)
  • Institut Paoli-Calmettes (Marseille)
  • Zhongshan Hospital, Fudan University (Shanghai) 

Education & Qualifications

• PhD in Medicine and Surgery – Complutense University of Madrid
• MD (Medicine & Surgery) – Complutense University of Madrid
• Specialist in Gastroenterology (Digestive System) 

Research & Academic Activity

Dr. Esteban López-Jamar is actively involved in international clinical research, particularly in:

• Barrett’s esophagus and early cancer detection
• Endoscopic therapies and innovative technologies
• Pancreatic and biliary disease management

He has participated in multiple multicenter European studies and clinical trials focused on advanced endoscopic treatments and diagnostic technologies.

Professional Memberships

• Spanish Society of Digestive Diseases (SEPD)
• Spanish Society of Digestive Endoscopy (SEED)
• European Society of Gastrointestinal Endoscopy (ESGE)
• Other national and international gastroenterology associations 

Clinical Approach

Dr. Esteban López-Jamar is known for:

• Precision diagnostics using advanced endoscopic techniques
• Minimally invasive treatments
• Personalized care for complex digestive conditions
• Integration of innovation and clinical research into daily practice

Why Choose Dr. Esteban López-Jamar

• Pioneer in endoscopic ultrasound in Spain
• Head of a leading Digestive Endoscopy Unit
• Extensive experience in complex gastrointestinal cases
• Strong involvement in research and innovation
• Highly rated by patients for professionalism and empathy