Dr Ana Isabel Romero Reina

Digestive System

Dr Ana Isabel Romero Reina

Specialist in
  • Gastro-oesophageal reflux disease and its complications.
  • Functional oesophageal disorders
  • Gastroscopy and colonoscopy
«My aim is to support patients as they learn to understand their digestive health, drawing on both science and empathy.»
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Professional profile

Dr Ana Isabel Romero Reina is a specialist in the digestive system, with a career focused on the comprehensive management of functional digestive disorders and oesophageal conditions, combining diagnostic precision with a holistic clinical approach.

Her practice is characterised by a personalised approach, with particular emphasis on communication and active listening, aimed at ensuring that patients understand their condition and play an active role in treatment decisions, combining scientific rigour with a doctor-patient relationship based on trust.

Education

Key milestones in his training include his university studies, his specialisation in the digestive system and his postgraduate training in specific areas.

2021 | Course on deep sedation in endoscopy. Spanish Society of Digestive Endoscopy.
2021 | Postgraduate course in intestinal permeability. Francisco de Vitoria University.
2019 | Postgraduate course on oesophageal diseases. University of Alcalá.
2012 | Doctor of Medicine. Complutense University of Madrid.
2009 | Official qualification as a specialist in Gastroenterology. Ministry of Education and Science.
2004 | Degree in Medicine and Surgery. University of Castilla-La Mancha.

Professional experience

His previous roles include his ongoing clinical work at leading hospitals.

2022 – Present | Specialist clinician. 12 de Octubre University Hospital.
2013 – 2022 | Specialist doctor. Jiménez Díaz Foundation University Hospital.
2010 – 2014 | Specialist doctor. HM Hospitales Group (Valle Suchil).
2009 – 2014 | Specialist doctor. Ruber Internacional Hospital.
2009 – 2014 | Specialist doctor. Dr Esteban Clinic.
2009 – 2012 | Specialist in the field. San Carlos Clinical Hospital.

Scientific publications

His most significant scientific publications include papers on functional and oesophageal gastrointestinal disorders.

2025 | Romero Reina AI, et al. A hypoallergenic solid meal for gastric emptying scintigraphy based on the Mediterranean diet. Spanish Journal of Nuclear Medicine and Molecular Imaging. 2025.
2021 | Romero Reina AI, et al. Chapter: Gastro-oesophageal reflux disease. CIRUGÍA AEG. 2021.
2007 | Romero Reina AI, et al. Giardiasis. Siete Días Médicos Journal. 2007.
2007 | Romero Reina AI, et al. Ophthalmological manifestations of digestive diseases. Siete Días Médicos Journal. 2007.
2007 | Romero Reina AI, et al. Solitary rectal ulcer syndrome. ACAD Journal. 2007.

Areas of special focus

Among the conditions he focuses on most in his clinical practice are the following.

  • Gastro-oesophageal reflux disease and its complications.
  • Functional oesophageal disorders.
  • Functional disorders of the stomach and small intestine.
  • Functional disorders of the colon and anorectum.
  • Eosinophilic oesophagitis.

Techniques and procedures

The techniques and procedures he routinely performs include the following.

  • Gastroscopy and colonoscopy.
  • Oesophageal manometry with and without impedance measurement.
  • Anorectal manometry and balloon expulsion test.
  • pH monitoring with and without impedance monitoring.
  • Colonic transit time study.

Accreditations and memberships

He is a member of leading scientific societies in the field of the digestive system.

  • Spanish Association of Neurogastroenterology and Motility (ASENEM).
  • Spanish Association of Gastroenterology (AEG).
  • Spanish Society of Digestive Pathology (SEPD).

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