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.
Meet the Team at Derma Consult Skin Specialist
Yobany Valencia
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Yobany Valencia is the founder of Derma Consult Skin Specialist, NMC Registered Nurse and an advanced Aesthetic Practitioner.
With years of experience as a practicing NHS Dermatology and Skin Cancer Nurse, Yobany is driven by his passion and dedication.
Yobany’s professional experience is reinforced by certified training from St John’s Derm Academy and Interface Aesthetics in London.
Yobany believes in an aesthetic practice that is effective, safe, innovative and holistic. He holds membership of the British Dermatological Nursing Group (BDNG), British Association of Cosmetic Practitioners (BACN) and Joint Council for Cosmetic Practitioners (JCCP).
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.
Serhiy Aleksyeyenko
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Serhiy Aleksyeyenko is a medical graduate from Ukraine (MBBS). His past qualification training includes work at Guys’ & St. Thomas’ NHS Foundation Trust with NMC registration.
Serhiy has been working for over 10 years at St. Johns Dermatology institution (Guys’ & St.Thomas’ NHS Foundation Trust) as a Surgical Practitioner within the skin cancer unit.
His areas of special interest include skin biopsies including the management of benign lesions such as cysts, lipomas and skin tags and more advanced procedures to repair skin cancers including skin grafts and flap repairs. Serhiy also runs a national skin biopsy course and has a passion for education and shares his experiences and teaching for junior doctors and specialist nurses in dermatology.
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.
Jyoti Mandalia
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Jyoti is an experienced and highly skilled nurse with over 15 years of practice in the healthcare sector. A graduate of King’s College London with a BSc in Adult Nursing, Jyoti also holds an MSc in Clinical Dermatology, reflecting her advanced knowledge and dedication to the field.
Her extensive experience includes practising in the dermatology sector as a Dermatology Nurse at the renowned Guy’s and St Thomas’ NHS Foundation Trust, where she developed expertise in managing a wide range of complex skin conditions. As a qualified Nurse Prescriber, Jyoti has consistently demonstrated advanced clinical skills and a commitment to patient-centred care.
Building on her dermatology expertise, Jyoti trained in Aesthetic Medicine and has worked with leading cosmetic companies, including The Harley Medical Group and SK:N Clinics. She is known for her natural approach to aesthetic treatments, delivering results that enhance each client’s unique features while maintaining authenticity.
Dedicated to instilling confidence in her clients, Jyoti combines her strong clinical background with a refined aesthetic judgement, ensuring safe, effective, and bespoke care.
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.
Dr Jonathan Kentley
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Dr Kentley is a consultant dermatologist with extensive experience across all aspects of general, surgical and cosmetic dermatology. He has worked in tertiary clinics managing patients with acne, inflammatory skin diseases such as eczema and psoriasis, as well as male genital skin disorders and dermatology in people living with HIV.
Dr Kentley has a particular interest in early diagnosis of skin cancer and completed a fellowship at Memorial Sloan Kettering Cancer Center in New York whilst undertaking his doctorate Imperial College London on artificial intelligence in dermatology. He is an expert in dermoscopy and other forms of skin imaging to detect cancer at its earliest stage.
Dr Kentley is highly experienced in cosmetic dermatology, having been trained by leading consultants in the UK and USA, including injectable treatments, peels and the use of energy-based devices. He sits on the committee of the British Cosmetic Dermatology Group and has completed both a mentorship and preceptorship with the American Society of Laser Medicine and Surgery.
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Davinia Garcia
PATIENT COORDINATOR / HR MANAGER
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Stephanie Ogilvie
MARKETING MANAGER
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Tatiana Valencia
ACCOUNTS MANAGER
