About us
At Derma Consult Skin Care Specialist, our team of experienced dermatologists, skincare experts, and researchers is committed to offering top-quality skincare solutions. With our knowledge and dedication to staying current in dermatology, we strive to provide the best care for your skin.
Rely on our specialists for healthy, glowing skin that boosts your confidence.
Our Team
Yobany Valencia
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Yobany is an experienced Dermatology and Skin Cancer Nurse, Independent Nurse Prescriber, and Founder of Derma Consult, based in London. With a passion for advancing skin health and enhancing patient confidence, he combines extensive clinical expertise with advanced aesthetic training to deliver safe, evidence-based treatments tailored to each patient’s individual needs and goals.
His specialist training includes certification from the renowned St John’s DermAcademy at Guy’s and St Thomas’ NHS Foundation Trust, King’s College London, and Interface Aesthetics. Alongside his clinical practice, Yobany is recognised as a cast member of the Discovery+ series The Bad Skin Clinic, where he supports and educates patients living with a wide range of complex skin conditions.
Committed to excellence in both dermatology and medical aesthetics, Yobany takes a patient-centred approach that prioritises skin health, natural-looking results, and long-term wellbeing. He remains dedicated to continuous professional development and maintaining the highest standards of care.
Yobany is a proud member of the British Dermatological Nursing Group (BDNG), St John’s DermAcademy professional network, the British Association of Medical Aesthetic Nurses (BAMAN), and the Joint Council for Cosmetic Practitioners (JCCP), demonstrating his ongoing commitment to clinical excellence, patient safety, and best practice within the field of dermatology and aesthetics
Dr Neeraj Kohli
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Dr Neeraj is a fully qualified consultant haematologist working at the prestigious Guy's and St Thomas' NHS Foundation Trust
He graduated with distinction from Imperial College School of Medicine in 2011, as well as achieving 1st class honours in BSc in Neurosciences and Mental Health, and also a postgraduate MSc in Tropical and Infectious Diseases.
He holds membership of the Royal College of Physicians (MRCP) as well as being a fellow of the Royal College of Pathologists (FRCPath).
Dr Aaron Tan
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Dr Aaron Tan is a board-certified consultant dermatologist and fellowship-trained Mohs micrographic surgeon with extensive international experience in medical, surgical, and cosmetic dermatology. He has worked in leading dermatology centres across Singapore, Australia, and the UK — including the National Skin Centre (Singapore), the Skin and Cancer Foundation (Melbourne), and Guy’s and St Thomas’ NHS Trust (London), where he is currently based.
Expertise & Areas of Interest Dr Tan has a particular interest in:
• Skin cancer diagnosis and treatment
• Mohs micrographic and reconstructive surgery
• General dermatology for all skin types
• Laser and cosmetic dermatology He is skilled in treating patients of all ethnic backgrounds and understands the unique considerations of skin of colour.Qualifications & Education
• Fellow, Australasian College of Dermatologists (FACD)
• Fellow, Academy of Medicine Singapore (Dermatology)
• Member, Royal College of Physicians (UK) and Royal College of Physicians and Surgeons (Glasgow)
• MSc Public Health, London School of Hygiene & Tropical Medicine
• MBBS, National University of Singapore
• Botox, fillers and facial contouring training (Derma Medical)Philosophy of Care
Patients appreciate Dr Tan’s calm, thoughtful approach and his commitment to evidence-based, compassionate care. He believes in empowering individuals with knowledge about their skin and working together to create lasting, effective outcomes.
Dr David Stark
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Dr Stark is a highly experienced surgeon currently specialising in plastic surgery (specialty registrar) with over 10 years of combined NHS and aesthetic experience.
He completed the UK Foundation Training Programme, where he was Highly Commended for Outstanding F1 Trainee of the Year, before completing Core Surgical Training with focused experience in general, breast and plastic surgery. He has successfully completed both Part A and Part B of the Membership of the Royal Colleges of Surgeons (MRCS) examinations.
Dr Stark has a keen academic interest, having authored multiple peer-reviewed publications. His recent study, the Hypercoagulable State in COVID-19 and Implications for Free Flap Surgery in the Lower Limb: A Retrospective Multi-Centre Study has been published in the Journal of Plastic, Reconstructive & Aesthetic Surgery and then submitted a manuscript for publication entitled One or Two Veins in Acute Lower Limb Reconstruction: A Systematic Review and Meta-Analysis of the Venous Anastomotic Dilemma, reflecting his dedication to evidence-based practice. He was also awarded 1st prize for his research titled Beyond the Scalpel: Lymphedema Consideration in Breast Cancer Treatment at the Southwest Oncoplastic Breast Surgery Conference.
A regular contributor to surgical conferences with more than 20 national and international presentations to date, presenting his work at the British Association of Plastic, Reconstructive and Aesthetic Surgeons Congress, Congress of the World Society for Reconstructive Microsurgery and the Evidence Based Peri-operative Medicine Congress. His academic contributions include multiple published book chapters in texts including Communication Skills for Surgeons: A Contemporary Guide and 50 Landmark Papers every Breast Surgeon Should Know.
Passionate about medical education, Dr Stark has established and led numerous teaching programmes, including an innovative On-Call Simulation Teaching Programme for Final Year Medical Students in England, Departmental Foundation Trainee Surgical Teaching and a Teaching Faculty Member at the Introduction to Plastic Surgery and Hand Trauma Course.
In aesthetics, he combines his surgical precision with an artistic eye to deliver safe, subtle, and natural-looking results — committed to personalised care and evidence-based treatments tailored to each patient's unique needs and goals.
Rosanna Degala
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Independente prescriber
Rosanna is a Sister in the Dermatological Surgerry and Laser Unit, Guys and St Thomas Trust. She specialises in procedural dermatology that includes assisting in Mohs micrographic surgery, advanced skin surgery and laser therapy. She also works with nurse-led services for minor surgery, wound management post dermatological procedures, Photodynamic Therapey, Botox, and is often seen facilitating events and education meetings. Besides her nhs wok, Rosanna can be seen on the tv program “The Bad Skin Clinic” assisting Dr Emma Craythorme in treating patients suffering from unusual and extraordinary skin conditions.
Dr Nikolay Nikolov
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Dr Nikolay Nikolov is a highly experienced aesthetic doctor with more than six years of extensive experience as a medical doctor in General, Plastic and Cosmetic surgery in both the NHS and the private sector in the UK. With years of experience in facial aesthetics, he provides his patients with holistic and individually tailored treatment plans, dedicated to successful client results. In his private practice, Dr Nikolov specialises in complex non-surgical restoration and rejuvenation of the face and the body, in benign minor skin surgery and advanced skin laser treatments. He also consults on skin care, hair loss, body health and wellbeing.
Dr Nikolov is a GMC (General Medical Council) registered, fully insured and certified medical and aesthetic doctor in the U.K. and EU.
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Stephanie Ogilvie
MARKETING MANAGER
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Tatiana Valencia
ACCOUNTS MANAGER
