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Every listing traced to a public source

406 organizations drawn from public sources, 27 in Oregon, 62 in Colorado, plus ketamine clinics, international retreats, and support services. Each listing links to its sources. Last reviewed November 2026.

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Unknown prices, formats and remote arrangements are excluded by the corresponding filters; an omitted fact does not mean the service is unavailable.

2 providers · Psilocybin

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Licensed natural medicine healing center

  • Monthly low dose group

    USD 300 / Per participant, per monthly gathering

    Group · Psilocybin · Low-dose (up to 2 mg psilocin)

    Published base amount; the complete mandatory total is not confirmed.

    Details and inclusions

    One-hour virtual group preparation · One-hour virtual group integration

    Preparation
    Included per source
    Integration
    Included per source
    Journey sessions
    Not stated

    Includes: 15-minute individual prescreen; One-hour virtual group preparation; 2-hour-45-minute in-person journey; One-hour virtual group integration

    Adults 21+, groups up to eight; no separate medicine fee established.

    Published duration: 2 hr 45 min per administration session. Medicine: not confirmed.

    Remote preparation or integration documented; treatment administration is in person unless stated.

    Official website · Price checked 2026-11-03

State-licensedCentennial, CO

Zephyr Collective

Licensed natural medicine healing center

  • Individual journey

    USD 3,500 / Per individual journey

    Individual · Psilocybin

    Not included or billed separately: Additional integration $200–250 each

    Published base amount; the complete mandatory total is not confirmed.

    Details and inclusions

    One to two hours of preparation · One to two hours of integration

    Preparation
    Included per source
    Integration
    Included per source
    Journey sessions
    1

    Includes: 1–2 hours preparation; 5–8-hour dosing session; 1–2 hours integration

    Not confirmed: Medicine inclusion not clearly specified

    Medicine inclusion and other mandatory costs not clearly specified.

    Published duration: 5 to 8 hours per administration session (Administration published as five to eight hours.). Medicine: not confirmed.

    Remote preparation/integration: not stated.

    Official website · Price checked 2026-11-03

  • Group session

    USD 1,500 / Per person

    Group · Psilocybin

    Published base amount; the complete mandatory total is not confirmed.

    Details and inclusions
    Preparation
    Not confirmed
    Integration
    Not confirmed
    Journey sessions
    Not stated

    Includes: Group session for four to eight participants

    Not confirmed: Medicine inclusion not clearly specified

    Standard group session.

    Published duration: Not stated. Medicine: not confirmed.

    Remote preparation/integration: not stated.

    Official website · Price checked 2026-11-01

  • Two day retreat

    USD 3,200 / Per person

    Group · Psilocybin

    Published base amount; the complete mandatory total is not confirmed.

    Details and inclusions
    Preparation
    Not confirmed
    Integration
    Not confirmed
    Journey sessions
    Not stated

    Includes: Two-day retreat program

    Not confirmed: Lodging and medicine inclusion not clearly specified

    Pricing note: Retreat pricing based on six participants

    Retreat pricing assumes six participants.

    Published duration: Not stated. Medicine: not confirmed.

    Remote preparation/integration: not stated.

    Official website · Price checked 2026-11-01

State-licensedCentennial, CO

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