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Dr. Nataliia Lifantieva is a cardiologist and cardiac electrophysiologist with extensive experience in the diagnosis and treatment of arrhythmias. She offers online consultations for patients with chronic cardiovascular conditions, including medication management and post-operative follow-up.

Main areas of expertise:

• Diagnosis and treatment of arrhythmias: extrasystole, atrial fibrillation and flutter, supraventricular and ventricular tachycardia
• Conduction disorders: AV blocks, sinoatrial block, bradyarrhythmias
• ECG and Holter monitor interpretation, including data from smartwatches
• Evaluation for interventional treatment: stenting, bypass surgery, valve replacement
• Anticoagulant management (e.g., warfarin, DOACs) based on kidney function and clinical context
• Perioperative advice on anticoagulant/antiplatelet therapy before dental procedures

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques. For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

• seasonal and perennial allergies
• allergic rhinitis and chronic nasal symptoms
• asthma and breathing difficulties
• food and medication allergies
• urticaria, atopic dermatitis and skin reactions
• recurrent infections in children
• sports-related health questions
• general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

Dr. Pawel Danko is a physician and specialist in Internal Medicine, as well as a graduate of the Jagiellonian University Medical College in Krakow.

He gained extensive clinical experience at the 5th Military Clinical Hospital with Polyclinic in Krakow, the District Hospital in Chrzanów (Department of Gastroenterology), and the Hospital of the Ministry of Internal Affairs and Administration in Krakow, where he worked in the Department of Internal Medicine and Geriatrics. He has also practiced in Primary Healthcare and in an Internal Medicine Clinic.

Currently, Dr. Danko works at the Voivodeship Eye Hospital in Krakow, where he is responsible for qualifying patients for ophthalmological surgery.

His work with patients requiring multidisciplinary and intensive medical care has enabled him to develop a comprehensive approach to patient assessment and a deep understanding of the connections between seemingly unrelated medical conditions. He has particular experience in the diagnosis and treatment of gastroenterological and cardiological diseases.

In his clinical practice, Dr. Danko focuses on optimizing treatment plans - aiming to use the minimum necessary number of medications in order to reduce the risk of adverse drug interactions. He continually updates his medical knowledge and remains committed to providing the highest standard of care to his patients.

Dr. João Silva is a physician with training and experience in the field of General and Family Medicine, dedicated to providing healthcare focused on the well-being and quality of life of his patients. Throughout his professional career, he has developed broad clinical competencies, striving to maintain a medical practice based on scientific evidence and continuous knowledge updates.

Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

Subsequently, between January 2021 and December 2021, he completed the General Internship at the Entre Douro e Vouga Hospital Center in Santa Maria da Feira, where he had the opportunity to work in different hospital settings and deepen his competencies in several areas of medicine.

From January 2022 until March 2026, he works as a Resident Physician in General and Family Medicine at USF Salvador Machado in Oliveira de Azeméis, developing clinical activities in primary healthcare, follow-up of chronic patients, and health promotion in the community.

Complementing his medical training, Dr. João Silva also completed a Postgraduate Degree in Continuing and Palliative Care at CESPU, strengthening his preparation in the comprehensive approach to patient care, especially in situations requiring prolonged care and multidisciplinary support.