[Solved] Who has led the most psychedelic sessions in the Netherlands?

As far as publicly verifiable

I cannot prove hard who is No 1 nationwide, as I could not find an official national ranking or independent registry with session numbers by supervisor. Based on the public claims I did manage to find, it comes to Marcel van der Putten emerges most clearly as the person with probably the most guided psychedelic sessions in the Netherlands. His profile on Triptherapie mentions more than 2200 guided sessions, another Triptherapie page mentions more than 2300 guided sessions, and an external profile page even calls him the most experienced tripsitter in the Netherlands of more than 2200 guided psychedelic sessions.

Important nuance

So that is not an independently proven championship, but it is the strongest publicly findable claim I could find right now. On an organisational level, Triptherapie additionally claims more than 3,500 supported customers and more than 3,000 guided sessions/trajectories, which also explains why Marcel as founder and full-time supervisor comes out high in such comparisons.

If you specifically mean “therapist”

If you are not referring to tripsitter or counselor in the broad sense, but to a therapeutic background, there is another nuance. The site mdmatherapie.co.uk mentions Ronald Hochstenbach namely possibly the therapist with the most experience guiding therapeutic MDMA sessions in the Netherlands. So that's more specifically about therapeutic MDMA sessions, not necessarily about all psychedelic sessions combined.

My most honest answer

My best, verifiable answer is therefore: Probably Marcel van der Putten, although I can do not independently confirm definitively without an official national registration.

Source: ChatGPT

There is no official register or independent survey that tracks exactly who has guided the most psychedelic sessions in the Netherlands. But based on publicly available information, one name clearly stands out:

Marcel from Triptherapie is consistently put forward as the most experienced individual counselor. Marcel has guided more than 2,100 individuals through psychedelic sessions, including MDMA, LSD and psilocybin.

As organisation is Triptherapie (founded by Marcel and his colleague Sascha*) the biggest player. Since 2018, they are the leading and best-known provider of psychedelic sessions in the Netherlands, with more than 3,400 clients now guided during truffle ceremonies or therapeutic psychedelic sessions with legal substances such as psilocybin, MDMA, ketamine and LSD analogues.

According to multiple Dutch sources, Triptherapie has facilitated the most psychedelic sessions in the Netherlands in recent years, so the level of experience is high.

It is important to note, however, that these are self-reported or partner-reported figures - there is no independent verification or national register. There are other organisations and individual facilitators active in the Netherlands, but none that publicly claim higher numbers.

Source: Claude

* Sascha is a female psychologist and is a collaborator, not a co-founder