Dr. med.
Nikolaos Bountouvis

Specialist in Endocrinology and Diabetology

I was born and raised in Athens. Medicine has been part of my life for more than 30 years. To me, it is far more than just a job. Throughout these years, I have been deeply influenced by the people I have met, their diverse life stories and their individual healthcare needs.

My professional career has taken me through university hospitals, public hospitals, specialised medical centres and private specialist practices in Greece, the United Kingdom, France and Switzerland. Throughout my career I have had the privilege of caring for a large and diverse patient population, sharing my knowledge and experience with younger colleagues and supporting them throughout their training and contributing to volunteer medical missions in remote and underserved communities. These experiences have enriched me both professionally and personally.

As part of my doctoral dissertation at the University of Bern I focused on diabetes mellitus among refugees. My international clinical experience and my work with people from diverse cultural and social backgrounds have deepened my understanding of the importance of culturally sensitive and individually tailored medical care.

Since September 2026 I have been running my own specialist practice, Endokrinologie Marktgasse, in the heart of Bern’s historic Old Town.

My approach to medicine is based on thorough diagnostic assessment, evidence-based treatment and personalised care. I place particular emphasis on clear communication, shared decision-making and building long-term trusting relationships with my patients.

Professional Experience

Endokrinologie Marktgasse, Bern
Founder and Independent Specialist in Endocrinology and Diabetology

Since September 2026

Endokrinologie Diabetologie Bern, Group Practice
Independent Specialist in Endocrinology and Diabetology

2025 – 2026

Inselspital, Bern University Hospital
University Department of Endocrinology, Diabetology, Nutritional Medicine and Metabolism (UDEM)
Deputy Senior Physician, subsequently Senior Physician

2022 – 2025

Metaxa Anticancer Hospital, Piraeus
Senior Physician in Endocrinology and Diabetology

2021 – 2022

Mytilene General Hospital, Lesvos
Senior Physician and Head of the Endocrinology and Diabetology Outpatient Clinics

2019 – 2021

Medbase Zurich Wiedikon
Specialist in Endocrinology and Diabetology

2017 – 2019

Centre Hospitalier Moulins-Yzeure
Department of Endocrinology, Diabetology and Polyvalent Medicine
Contract Hospital Physician (Praticien Hospitalier Contractuel)

2016 – 2017

Endoterra®, Endocrinology and Diabetology Practice, Athens
Founder and Independent Specialist in Endocrinology and Diabetology

2012 – 2016

KAT General Hospital, University of Athens
Senior Physician and Head of the Osteoporosis Outpatient Clinics

2011 – 2012

AstraZeneca SA, Athens
Medical Advisor, Cardiovascular

2010 – 2011

Evangelismos General Hospital, Athens
Resident Physician, Specialist Training in Endocrinology, Diabetology and Metabolic Diseases

2006 – 2010

Atos Healthcare, London, UK
Medical Advisor / Disability Analyst

2004 – 2005

Konstantopouleio General Hospital, Nea Ionia, Athens
Resident Physician, Training in General Internal Medicine

2001 – 2003

Military Service as a Medical Officer, Greece

2001

Samos and Pyrgos, Samos
Medical Officer, Rural Medical Service
Clinical Training in Internal Medicine, Cardiology and Surgery

1999 – 2001

Education and Academic Qualifications

Doctor of Medicine (Dr. med.)
University of Bern

2024

University Diploma in Diabetic Foot Disease
Diplôme Universitaire, Pied Diabétique
Faculty of Medicine Montpellier-Nîmes

2017

Master of Science (MSc) in Medical Statistics
Athens University of Economics and Business (AUEB)

2010

Specialist Qualification in Endocrinology and Diabetology
Athens

2010

Medical Degree
University of Ioannina

1999

Areas of Medical Expertise

Diabetes and Advanced Diabetes Technologies
  • Type 1 and Type 2 diabetes mellitus, including rare forms of diabetes
  • Continuous glucose monitoring (CGM)
  • Insulin pump therapy and automated insulin delivery (AID) systems
  • Diabetic foot disease and prevention of diabetes-related complications
Thyroid Disorders
  • Thyroid dysfunction and autoimmune thyroid diseases
  • Thyroid nodules and thyroid cancer
  • Thyroid ultrasound and ultrasound-guided fine-needle aspiration
  • Long-term follow-up after thyroid surgery and radioactive iodine treatment
Endocrinology and Metabolic Disorders
  • Pituitary and adrenal disorders
  • Calcium and bone metabolism disorders, including osteoporosis
  • Hormonal disorders in women and men
  • Obesity and metabolic diseases
  • Lipid metabolism disorders
Memberships in Scientific and Professional Societies
  • Swiss Society of Endocrinology and Diabetology
  • European Society of Endocrinology (ESE)
  • Hellenic Endocrine Society
  • Hellenic Diabetes Association
  • Hellenic Society for the Study of Diabetic Foot Diseases
  • European Menopause and Andropause Society (EMAS)
Languages: Greek (native), German, French and English.

Expertise

Specialized expertise in endocrinology, diabetology and metabolic medicine.
01

Endocrinology

Diagnosis and treatment of hormonal disorders, including conditions affecting the pituitary gland, adrenal glands, thyroid and parathyroid glands, as well as hormonal and metabolic disturbances.

02

Diabetology

Individualised management of type 1 diabetes, type 2 diabetes and other forms of diabetes. Advanced diabetes care using continuous glucose monitoring (CGM), insulin pumps and automated insulin delivery (AID) systems.

03

Thyroid Disorders

Diagnosis and treatment of thyroid conditions, thyroid ultrasound, ultrasound-guided fine-needle aspiration and ethanol ablation of selected cystic thyroid nodules.

04

Obesity and Metabolic Medicine

Medical assessment and treatment of overweight and obesity, modern pharmacological therapies and body composition analysis using bioelectrical impedance analysis (BIA).

05

Pituitary and Adrenal Disorders

Specialised diagnostic evaluation, hormonal function testing and long-term management of complex endocrine conditions.

06

Personalised Medical Care

I believe that successful medical care is based on mutual trust, clear communication and an individualised approach. I take the time to understand your concerns, explain medical findings and develop treatment plans suited to your needs. I look forward to welcoming you to my practice. New patients are welcome.