# Debashis Reja – Cal.com booking page > Book a meeting with Debashis Reja on Cal.com. Booking page: https://extension-health.cal.com/drreja ## Event types - [Consultation - Procedure Clearance (new patient)](https://extension-health.cal.com/drreja/procedure-clearance-consult-new-patient): 30 min, confirmed instantly, event type id 4050920. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/procedure-clearance-consult-new-patient.md - [Custom Vitamin Infusion - New Patient](https://extension-health.cal.com/drreja/custom-iv-physician-curated-new-patient): 30 min, confirmed instantly, event type id 4051119. Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/custom-iv-physician-curated-new-patient.md - [Advanced Therapies - Niagen+ Infusion (500mg)](https://extension-health.cal.com/drreja/niagen-infusion-500mg): 30 min, confirmed instantly, event type id 4051171. Preparation Instructions for Your Upcoming Infusion: Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/niagen-infusion-500mg.md - [Vitamin Infusion - Follow-Up (Energy/Immunity/Inflammation/Beauty/Brain Boost)](https://extension-health.cal.com/drreja/vitamin-iv-follow-up-energy-immunity-inflammation-beauty-or-brain-boost): 30 min, confirmed instantly, event type id 4051082. Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/vitamin-iv-follow-up-energy-immunity-inflammation-beauty-or-brain-boost.md - [Custom Vitamin Infusion - Follow Up](https://extension-health.cal.com/drreja/custom-iv-physician-curated-follow-up): 30 min, confirmed instantly, event type id 4051142. Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/custom-iv-physician-curated-follow-up.md - [Advanced Therapies - EXTENSION Infusion](https://extension-health.cal.com/drreja/extension-iv): 30 min, confirmed instantly, event type id 4052232. Preparation Instructions for Your Upcoming Infusion: Please avoid eating or drinking (water is fine) for 4–6 hours before your appointment, as some patients can feel nauseous during the infusion. Be sure to arrive well-hydrated. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/extension-iv.md - [Vitamin Infusion - New Patient (Energy/Immunity/Inflammation/Beauty/Brain Boost)](https://extension-health.cal.com/drreja/vitamin-iv-new-patient-for-energy-immunity-inflammation-beauty-or-brain-boost): 30 min, confirmed instantly, event type id 4051043. Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/vitamin-iv-new-patient-for-energy-immunity-inflammation-beauty-or-brain-boost.md - [Consultation - Gastroenterology (GI)](https://extension-health.cal.com/drreja/gi-consultation): 60 min, confirmed instantly, event type id 4050855. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/gi-consultation.md - [Consultation - Peptides (new patient)](https://extension-health.cal.com/drreja/peptide-consultation-new-patient): 30 min, confirmed instantly, event type id 4050871. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/peptide-consultation-new-patient.md - [Consultation - Peptides (existing patient)](https://extension-health.cal.com/drreja/peptide-consultation-follow-up): 30 min, confirmed instantly, event type id 4050903. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/peptide-consultation-follow-up.md - [Consultation - Longevity (existing patient)](https://extension-health.cal.com/drreja/longevity-consultation-follow-up): 60 min, confirmed instantly, event type id 4050803. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/longevity-consultation-follow-up.md - [Advanced Therapies - Ketamine Infusion](https://extension-health.cal.com/drreja/ketamine-iv): 30 min, confirmed instantly, event type id 4052245. Preparation Instructions for Your Upcoming Infusion: Please avoid eating or drinking (water is fine) for 4–6 hours before your appointment, as some patients can feel nauseous during the infusion. Be sure to arrive well-hydrated. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/ketamine-iv.md - [Consultation - Procedure Clearance (existing patient)](https://extension-health.cal.com/drreja/procedure-clearance-consult-follow-up): 30 min, confirmed instantly, event type id 4050943. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/procedure-clearance-consult-follow-up.md - [Consultation - Longevity (new patient)](https://extension-health.cal.com/drreja/longevity-consultation-new-patient): 60 min, confirmed instantly, event type id 4050831. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/longevity-consultation-new-patient.md - [Advanced Therapies - Cerebrolysin Infusion](https://extension-health.cal.com/drreja/cerebrolysin-iv): 30 min, confirmed instantly, event type id 4052323. Preparation Instructions for Your Upcoming Infusion: Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/cerebrolysin-iv.md - [Members - Consultation](https://extension-health.cal.com/drreja/members-consultation): 30, 60 min, confirmed instantly, event type id 4109833. If you have any questions or need to cancel or reschedule, you can do so by email at membership@extension.health. Details: https://extension-health.cal.com/drreja/members-consultation.md - [Advanced Therapies - NAD+ Infusion](https://extension-health.cal.com/drreja/nad-iv): 30 min, confirmed instantly, event type id 4052252. Preparation Instructions for Your Upcoming Infusion: Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/nad-iv.md - [Advanced Therapies - Methylene Blue Infusion](https://extension-health.cal.com/drreja/methylene-blue-iv-450): 30 min, confirmed instantly, event type id 4052285. Preparation Instructions for Your Upcoming Infusion: Please ensure you arrive well-hydrated to your appointment. If you are taking an anti-depressant or anti-anxiety medication, please let your provider know. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health. To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/methylene-blue-iv-450.md - [Advanced Therapies - PK Protocol Infusion](https://extension-health.cal.com/drreja/pk-protocol-appt): 30 min, confirmed instantly, event type id 4052411. Preparation Instructions for Your Upcoming Infusion: Please ensure you arrive well-hydrated to your appointment. If you need to cancel, kindly do so at least 24 hours in advance to avoid a cancellation fee. You can reach us by text at 929-556-6647 or email at concierge@extension.health.To help us stay on schedule, please arrive 10 minutes prior to your appointment time. Details: https://extension-health.cal.com/drreja/pk-protocol-appt.md - [15 Min Meeting](https://extension-health.cal.com/drreja/15min): 15 min, confirmed instantly, event type id 3952683. Details: https://extension-health.cal.com/drreja/15min.md - [30 Min Meeting](https://extension-health.cal.com/drreja/30min): 30 min, confirmed instantly, event type id 3952681. Details: https://extension-health.cal.com/drreja/30min.md ## Check availability ```http GET https://api.cal.com/v2/slots?eventTypeId=&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone= cal-api-version: 2024-09-04 ``` The response is `{"data":{"YYYY-MM-DD":[{"start":""}]}}`; no API key is needed. ## Book Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`). ## More - API docs: https://cal.com/docs/api-reference/v2/introduction