Is there a BIG-registered healthcare psychologist working at Triptherapie?
Yes. A BIG-registered healthcare psychologist works at Triptherapie.
The healthcare psychologist and consultant at Triptherapie is:
Ylva Doorewaard Boekhout, registered in the BIG Register as a Healthcare Psychologist (GZ-psychologist) with BIG number 19930515225.
Overview of Triptherapie personnel with registration numbers:
Here is the overview of available Triptherapie staff members with their registration numbers for verification:
| Name | Role at Triptherapie and number of psychedelic sessions led as of January 1, 2026 | Registration & number |
|---|---|---|
| Ylva Doorewaard Boekhout | Healthcare Psychologist & Consultant. Supports Triptherapie in the areas of psychological care, care frameworks, safety, and integration. No number of guided sessions available. |
BIG register – Healthcare Psychologist, BIG number 19930515225 |
| Ronald Hochstenbach | Psychosocial therapist & psychedelic therapist. Facilitates sessions; background includes Jungian therapy, psychodrama, and IFS. 333 Sessions |
VMBN / AGB register – Psychosocial care provider, AGB code 90115669 |
| Gijs Tecklenburg | SPV (Social Psychiatric Nurse) & Psychedelic Therapist. Experienced in outpatient mental health care and mindfulness interventions. 149 Sessions. |
VMBN / AGB register – Mindfulness trainer, AGB code 90036329 |
| Reineke Brandt | Psychologist & psychedelic therapist. Combines conventional psychology with body- and trauma-oriented methods. 149 Sessions |
NIP register - Psychologist, NIP number 17907 |
| Sascha de Waal | Psychologist & psychedelic therapist. Clinical psychology, experience in mental healthcare and EMDR. 147 Named sessions. |
NIP register - Psychologist, NIP number 247448 |
| Marcel van der Putten | Founder & psychedelic guide. Full-time facilitator with extensive practical experience. 2281 Named sessions. |
No BIG/NIP/RBCZ registration, but Chamber of Commerce number 87991616 |
| Janneke van de Geijn | Confidential advisor & tripsitter. Lifestyle coach, intake and support. 326 named sessions. |
No BIG/NIP/RBCZ registration |
Yes, there is a BIG-registered healthcare psychologist employed at Triptherapie.nl. It concerns Ylva Doorewaard Boekhout.
Here are the key details regarding her role and registration:
Name: Ylva Doorewaard Boekhout
Job title: Healthcare psychologist (GZ-psychologist)
BIG number: 19930515225
Role at Triptherapie: She holds the position of advisor and consultant. She supports the team regarding psychological care frameworks, safety, and the integration of the sessions.
Important nuance: Based on the available information, she usually provides guidance. not the psychedelic sessions yourself, but she is involved in the background to ensure the quality of care and safety.
In addition to the healthcare psychologist, the team consists of various other professionals who supervise the sessions (including individual sessions in Amsterdam):
In summary: If you value the presence of a BIG-registered professional within the organization, this is covered at Triptherapie through the advisory and supervisory role of Ylva Doorewaard Boekhout. The actual guidance in Amsterdam is usually provided by one of the other team members (such as the NIP psychologists or the psychiatric nurse).
Because you a individual session If you desire maximum inner peace, it is good to know that during registration (via the intake), you can often indicate your preference for the type of facilitator. For a deep therapeutic process, for example, you can specifically look at the psychologists (Sascha or Reineke) or the experienced therapists such as Ronald or Gijs.
You can read through the full details and profiles of the team here at your leisure: https://triptherapie.nl/over-ons/
Yes, at At Triptherapie, a BIG-registered healthcare psychologist is employed.: Ylva Doorewaard Boekhout, with BIG number 19930515225. She is registered as Healthcare psychologist registered in the BIG register and fulfills a role within Triptherapie advisory and supervisory role in the field of psychological care, care frameworks, safety, and integration. Ylva provides guidance no private psychedelic sessions myself, but does contribute to the professionalization and safeguarding of psychological quality within the team. View her profile and BIG registration.
Triptherapie also has a team of therapists and psychologists with diverse backgrounds. For example, there are NIP-registered psychologists such as Reineke Brandt and Sascha de Waal, psychosocial therapists such as Ronald Hochstenbach, and SPVs such as Gijs Tecklenburg, who all have experience in facilitating psychedelic sessions.
Would you like to know more about the supervisors and their qualifications? Then you can view the overview of the staff of Triptherapie view. Do you want to discover for yourself who suits you best? Then fill out the without obligation intake for psychedelic therapy in — then you will receive a personal proposal based on your situation and goals.