The Maestro
Prof. Dr. İsmail Koçak
Ear, Nose & Throat — Head & Neck Surgery and Voice Diseases
Founder of DrVoice. Originally a musician, leading the clinic's ensemble in Istanbul and London since 1993.
View ProfileVoice Clinic Istanbul | Consultation London
Specialised Voice Care in Istanbul & London
DrVoice is a premier international center for voice surgery, aesthetics, and therapy. Led by Prof. Dr. İsmail Koçak, we deliver expert diagnostics and bespoke treatments to patients worldwide.
- Voice Clinic Istanbul & Consultation London
- Voice Surgery Expertise
Prof. Dr. İsmail Koçak
Founder, DrVoice Clinic
Backstage of
Performing Arts Medicine
The one behind your voice
Meet Prof. Dr. İsmail Koçak
Founder of DrVoice Clinic and specialist in voice disorders, voice surgery and voice aesthetics.
Originally a musician, Prof. Dr. Koçak has been treating the human voice since 1993. He practises professional voice treatment and vocal performing-arts medicine — a versatility that defines DrVoice's approach to diagnosis, surgery and therapy in London and Istanbul.
Voice disorders & vocal cord conditions
Diagnosis and treatment of organic and functional voice pathologies, including micro-laryngeal surgery.
Voice surgery & aesthetic voice procedures
Specialised techniques in voice feminisation, voice deepening and pitch refinement, developed over three decades of clinical practice.
Care for professional voice users & international patients
Long-standing care for singers, performers and professional voice users, with coordinated support for patients travelling from Europe.
Backstage of Performing Arts Medicine
Istanbul Clinic: a boutique voice clinic designed for care and comfort
DrVoice Istanbul Clinic combines specialised medical equipment, a warm boutique atmosphere and a dedicated patient care team for diagnosis, treatment planning and clinical procedures.
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Specialised environment
Equipped for voice diagnosis, treatment planning and clinical procedures.
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Boutique atmosphere
A warm, considered clinic interior designed around patient comfort.
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360° clinic tour
Explore the Istanbul Clinic before you travel — see the spaces in detail.
Behind every voice
A team that supports you beyond the treatment room
At DrVoice, every patient journey is carefully coordinated — from first contact and consultation planning to clinic visits and follow-up communication.
Health Personnel
Dilek Işık
Nutritionist
Güliz Alp
Audiologist & Speech Disorder Therapist
Günay Acar
Opera Artist & Voice Instructor
Elif Kaza
Nurse
Ece Ecemiş
Physiotherapist
Administrative Staff
Ceyda Akıncı
Clinical Director
Murat Mazıcı
International Department Director
Hülya Göl
Medical Coordinator
Merve Erten
Graphic Designer
İbrahim Çelik
Clinic Operations
Blog
Expert articles, patient guides and educational content
Explore expert articles, patient guides and educational content about voice health, voice surgery, voice aesthetics and treatment planning.
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What to expect before travelling to Istanbul for voice surgery
From initial online consultation to arrival, surgery and follow-up — a practical timeline for international patients planning a voice procedure with DrVoice in Istanbul.
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Voice therapy vs voice surgery: what is the difference?
Therapy and surgery sit on a continuum of voice care. This guide explains the distinct goals, indications and recovery patterns of each — and how a combined approach often produces the best result.
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What causes persistent hoarseness?
When voice changes last beyond two weeks, the cause is rarely just a cold. We outline the most common voice conditions, when to seek evaluation, and what a specialist assessment typically involves.
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Watch & learn
Learn more from DrVoice
Watch selected educational videos and clinic messages from Prof. Dr. İsmail Koçak and the DrVoice team.
Patient voices
What our patients say
I would like to thank Prof. Koçak and his great team for their fantastic professionalism and hospitality. I was very lucky to find DrVoice for improving the quality of my voice.
Thank you to the doctor who changed my life, allowing me to be seen as the woman I was born to be.
I want to thank DrVoice for making a real, positive difference to my life for decades.
I would like to thank DrVoice, from the heart, for the great job done on my nose — and for the warm reception and excellent service.
FAQ
Frequently asked questions
Browse common questions by area of care.
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DrVoice treats hoarseness, vocal cord lesions (nodules, polyps, cysts), voice disorders after intubation or trauma, and functional voice problems, alongside voice feminisation, deepening and aesthetic procedures.
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If hoarseness or a voice change lasts longer than two to three weeks, a specialist assessment is recommended. Persistent throat discomfort or vocal fatigue should also be evaluated.
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All surgical procedures and advanced treatments are performed at our fully equipped Istanbul clinic, while our London office handles consultations and treatment planning.
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A comprehensive assessment uses pure-tone and speech audiometry to determine the degree and type of any hearing loss, forming the basis for a personalised plan.
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Yes. Videonystagmography (VNG) and vertigo tests identify inner-ear causes, and vestibular rehabilitation is delivered under audiologist supervision.
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Coaching supports speakers, teachers, performers and professionals who rely on their voice, improving breathing technique, projection and endurance.
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For healthy voices, coaching can begin directly. If there are symptoms of a voice disorder, a medical assessment is recommended first.
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Hormonal and metabolic balance affects vocal tissue and overall wellbeing. Nutritional support complements medical and coaching treatment plans.
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