Ψυχολόγος - Ψυχοθεραπευτής

Ροΐκου 32α, Νέος Κόσμος, Neos Kosmos, Attica

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Why he is suitable for you

Kollias Thanos MSc is a Psychologist - Psychotherapist who maintains a private practice in Athens, providing psychological support and counseling to adolescents, adults, and couples, applying principles of cognitive and behavioral psychotherapy. He is a graduate of the Department of Psychology at the National and Kapodistrian University of Athens and has also completed undergraduate studies in the Department of Political Science and Public Administration at the same university, as well as postgraduate studies in Communication, Management, and Innovation at Wageningen University in the Netherlands. His interdisciplinary training contributes to a holistic understanding of human behavior, communication, and interpersonal relationships. He has received further training in Cognitive and Behavioral Psychotherapy at the Society for Cognitive and Behavioral Studies, recognized by the European Association for Behavioural and Cognitive Therapies (EABCT), while simultaneously pursuing a Master's degree in Educational Sciences at the National and Kapodistrian University of Athens (NKUA), specializing in the Psychopedagogy of Reading. He has collaborated with mental health institutions such as the Non-Profit Organization IASIS and the General Hospital Asklipieio Voulas (Child Psychiatry Department), gaining experience in assessment, parent counseling, and psychotherapeutic intervention with children and adolescents. In his therapeutic approach, he utilizes music therapy as a means of expression and processing emotions, enhancing emotional understanding and creative communication.

  • Professional Identification Number: 1061504/19-09-2024
  • network member
The description was edited by the doctoranytime team, based on verified information.

Experience

Relative Experience

  • Psychotherapy Online
  • Cognitive Behavioural Psychotherapy
  • Eating disorders
  • Dealing with Obsessive Compulsions
  • Anxiety and Stress
16 patients' recommendations

Relative Studies

Ψυχοθεραπευτής CBT, Γνωσιακών και Συμπεριφοριστικών Σπουδών, Εταιρεία Γνωσιακών και Συμπεριφοριστικών Σπουδών (2024 - Σήμερα) Πτυχίο Ψυχολογίας, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (2021 - 2024)

Services

Costs are indicative and will be determined on a case by case basis

Does not provide e-prescription

Patient Reviews

10
From 16 reviews

Real reviews for real people

Investigated my case in depth
10
Trustworthy
10
Experienced & qualified
10
Punctual
10
Approachable & friendly
10

Reviews are written by people who had an appointment with a specialist and want to share their experience. Learn how we ensure their authenticity

  • All (16)
  • Positive (16)
  • Neutral (0)
  • Negative (0)

10.0
Dimitris • 2 reviews
ήταν η πρώτη φορά που κανω συνεδρία με ψυχολόγο. Η εμπειρία ήταν πάρα πολύ καλή! Η προσέγγιση ήταν ανθρώπινη, προσεκτική και βοηθητική. Ένιωσα άνετα από την πρώτη στιγμή !
02 May 2026

10.0
Valia • 1 review
Είχα καθημερινές δυσκολίες που με επηρέαζαν έντονα, αλλά η βοήθειά του μου έδωσε εργαλεία να τις διαχειριστώ και να βελτιώσω τη ζωή μου! Η προσέγγισή του με κατανόηση και επαγγελματισμό με έκανε να νιώσω πραγματικά πιο σίγουρη για τον εαυτό μου! Ευχαριστώ πολύ για όλα!
16 March 2026

10.0
Γιαννης • 1 review
Ζεστός και όμορφος χώρος. Η προσέγγιση του σε βοηθάει να νιώσεις άνετα και να μοιραστείς αυτά που σε απασχολούν. Η επικοινωνία μαζί του είναι άμεση και ξεκάθαρη. Δίνει χώρο, σε ακούει πραγματικά και σε καθοδηγεί με τρόπο που σε κάνει να νιώθεις ότι προχωράς μπροστά.
17 January 2026

10.0
Nikos • 1 review
Πολύ καλός, τον συνιστώ ανεπιφύλακτα. Βλέπω ήδη διαφορά οπότε θα συνεχίσω. Επίσης, πολύ ωραίος χώρος που σε υποδέχεται και σε ηρεμεί. Γενικά πολύ καλή εντύπωση
09 January 2026

10.0
Χριστινα • 1 review
Η προσέγγιση του ήταν άμεση και καλοπροαίρετη. Με άκουσε με αληθινό ενδιαφέρον και με στήριξε .
15 December 2025

10.0
George • 1 review
Έχει έναν μοναδικό τρόπο να σε βοηθά να δεις τα πράγματα πιο καθαρά. Οι συνεδρίες σε κάνουν να αισθάνεσαι πιο οργανωμένος, πιο ήρεμος και πιο συνδεδεμένος με τον εαυτό σου. Μέσα σε πολύ μικρό χρονικό διάστημα έχω ήδη δει διαφορά στην διαχείρηση του άγχους και των φοβιών που με έκαναν αρχικά να κλείσω ραντεβού. Συνεχίζοντας εμβαθύνουμε και στην αιτία τους κάτι που μου δίνει ελπίδα ότι θα μπορώ να τα αντιμετωπίζω πολύ πιο εύκολα στο μέλλον αν βρεθώ ξανά στην ίδια συνθήκη.
26 November 2025

10.0
Eirini • 1 review
Από την πρώτη κιόλας συνεδρία να βοήθησε να μετατρέψω κάποιες περίπλοκες σκέψεις σε πιο ξεκάθαρες, κατανοητές και διαχειρίσιμες. Σε κάθε συνεδρία δείχνει πραγματικό ενδιαφέρον και σεβασμό, κάτι που με κάνει να νιώθω ασφαλής και πραγματική υποστήριξη.
21 November 2025

10.0
Μαρια • 1 review
Με ηρεμία, σταθερότητα και συνέπεια δημιουργεί ένα περιβάλλον εμπιστοσύνης. Νιώθεις ότι μπορείς να μιλήσεις ανοιχτά και να εξερευνήσεις όσα σε προβληματίζουν. Ήδη σε σύντομο χρόνο έχουμε βρει τρόπους και τεχνικές που με βοηθούν στην καθημερινότητα, και νιώθω ότι η πορεία μας έχει ήδη μια πολύ καλή βάση για να συνεχίσουμε ακόμη πιο ουσιαστικά. Σ’ευχαριστώ Θάνο!
21 November 2025

10.0
Maria • 1 review
Ένιωσα οικειότητα και κατανόηση απο την πρώτη συνεδρία. Στο ζήτημα του γενικευμένου άγχους που με απασχολεί ο κ. Κόλλιας μέσα απο τις συνεδρίες μας με βοηθάει στην διαχείρισή του και στην κατανόηση των αιτιών που το προκαλούν.
06 November 2025

10.0
Rios • 1 review
Ο κ. Κόλλιας άκουσε με προσοχή το ζήτημα που με απασχολεί. Ένιωσα κατανόηση από τη πλευρά του και από τη πρώτη κιόλας συνεδρία μου εξήγησε τη διαδικασία και τον τρόπο λειτουργίας της ψυχοθεραπείας.
28 October 2025

Contact and location

    • Address
      Ροΐκου 32α, Νέος Κόσμος, Neos Kosmos, Attica
    • Metro
      • 300m ΝΈΟΣ ΚΌΣΜΟΣ
      • 530m ΆΓΙΟΣ ΙΩΆΝΝΗΣ
      • 630m ΣΥΓΓΡΟΎ-ΦΙΞ
    • Bus
      • 280m ΚΑΣΟΜΟΥΛΗ
      • 310m ΒΟΥΛΙΑΓΜΕΝΗΣ
      • 320m ΦΟΥΡΝΟΣ
    • Parking
      • 580m ΥΠΌΓΕΙΟ ΠΆΡΚΙΝΓΚ ΣΤΑΘΜΟΎ ΣΥΓΓΡΟΎ-ΦΙΞ
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    Appointment Policy

    • Payment Options

      You can select online payment during booking or pay for the appointment at the specialist's practice.

    • Cancellation

      You can always cancel up to 3 hours before the appointment. In case of online payment you will receive a refund. For more information please read our cancellation and refund policy.

Curriculum Vitae and Career

Studies

  • Psychopedagogy of Reading, Reading Promotion, and Educational Material, Postgraduate Program in Educational Sciences, National and Kapodistrian University of Athens (2025 - Present)
  • CBT Psychotherapist, Cognitive and Behavioral Studies, Society of Cognitive and Behavioral Studies (2024 - Present)
  • Psychology, Department of Psychology, National and Kapodistrian University of Athens (2021 - 2024)
  • Master of Science in Management, Economics and Consumer Studies, Communication and Innovation Studies, Wageningen University (2011 - 2014)
  • Political Science, Department of Political Science, National and Kapodistrian University of Athens (2003 - 2009)

Professional experience

  • Psychologist - Psychotherapist, Private Practice, Athens
  • Psychologist, Non-Profit Organization IASIS
  • Psychology Internship, General Hospital Asklipieio Voula, Child Psychiatry Department
  • Volunteer/Caregiver, PIKPA Voula

Participation in conferences

  • 1ο Συνέδριο Ψυχοθεραπείας, Ελληνική Ψυχιατρική Εταιρεία (2022)
  • Η μουσικοθεραπεία στην Ελλάδα σήμερα, Ελληνικός Σύλλογος Πτυχιούχων Επαγγελματιών Μουσικοθεραπευτών (2022)
  • Masterclass: Εκπαίδευση δεξιοτήτων στις Διαταραχές Προσωπικότητας , Εταιρεία Γνωσιακών και Συμπεριφοριστικών Σπουδών (2026)
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Cognitive Behavioral Therapy (CBT)
mental health

What it is

Cognitive Behavioural Therapy (CBT) is a form of psychotherapy applied to problems such as depression, anxiety disorders, abuse, relationship and marriage problems, eating disorders and serious mental illness.The therapist emphasizes what is happening in the current life rather than the past and what led to the difficulties.

Approach

Identifying the distortions in a person's thinking that are causing problems and then examining these in the light of reality. Understanding the behaviour and motivations of others and using problem-solving skills to deal with difficult situations. Dealing with fears rather than avoiding them. Role-playing to better prepare for potentially problematic interactions with others. You become your own self-therapist.

How it could benefit you

Helps the individual to change dysfunctional thought patterns and behaviors. Improves your functioning and quality of life by helping to change patterns and behaviours. Teaches you to be your own self-therapist.

Dialectical Behavioural Therapy (DBT)
mental health

What it is

It is a form of psychotherapy that teaches a person to identify negative thought patterns and change them. DBT reinforces the acceptance that all your thoughts are valid, as they are part of your life experiences and who you are. The person acts by doing the best they can for the moment. It is used for people with suicidal behavior, post-traumatic stress disorder, substance use disorder, bipolar disorder, eating disorders, ADHD, depression, anxiety.

Approach

DBT focuses on acceptance and change. It helps the person to get to know themselves better, to think about why they do what they do, without judgment. Replacing a negative behavior or habit with ones that can improve the quality of life. Dialectic is the idea that two different things can be true at the same time. At the same time as accepting yourself exactly as you are, comes the recognition of your effort to change.

How it could benefit you

It helps you make positive changes in the way you act. It identifies your negative thought patterns and changes them, helping to make positive changes in the way you act. Teaches you ways to manage intense emotions and stressful thoughts when they occur.

Humanistic psychotherapy
mental health

What it is

Humanistic therapy is a form of psychotherapy in which self-awareness and self-acceptance are considered the keys to personal growth. It emphasizes creativity, collaboration and interaction between the individual and the therapist, using techniques such as role-play.

Approach

Each person is a combination of mind, emotions, body and soul with unique experiences and events. No single life event, personality trait or psychological diagnosis defines you.

How it could benefit you

It improves self-awareness and self-confidence, helps you understand how your past affects your present, how to deal effectively with stressful situations, improves human relationships and helps you better manage your emotions.

Psychodynamic psychotherapy
mental health

What it is

Psychodynamic psychotherapy is talk therapy that aims to understand current thoughts and feelings through the behaviours shaped by past experiences and the past. Understanding the past can help you avoid repeating unhelpful patterns that have existed in it and facilitate your quality of life alongside relief from distressing symptoms. It is used in depression, anxiety, interpersonal problems, addictions, trauma, eating disorders, personality disorder.

Approach

Psychodynamic psychotherapy provides a space to explore and understand how unhelpful patterns from the past may be influencing our current difficulties. Defence mechanisms are explored and how our feelings and behaviours in the present are shaped by our past experiences.

How it could benefit you

It helps people to live a healthier life. There may be things in a person's unconscious that they are not aware of that cause them pain or keep them stuck in the past. Identifying these and understanding them can lead you to move forward.

Systemic psychotherapy
mental health

What it is

Systemic psychotherapy is an approach about how the individual acts as part of a wider group or broader system of relationships: family, partner relationship, work, friendships, and social environment. This approach connects communication and interaction patterns with a problem or a difficulty that the individual may be experiencing.

Approach

Systemic psychotherapy identifies behavioral patterns within a persons’ relationships and in the way someone connects with others. It helps the individual understand themselves more effectively, along with their roles and communication style and supports them in developing more functional ways of thinking and communicating within their system.

How it could benefit you

It helps improve understanding of relationship and family dynamics. It can change dysfunctional communication and behavior patterns within the system, strengthen empathy, support the development of stronger relationships and help with managing conflicts and difficulties.

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