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Mr. Tristram Heyward Dashti-Gibson, LCMHC

Mental Health Counselor in Portsmouth, NH · enumerated 2006 · practices at Chestnut Hill Counseling Associates - Portsmouth LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1588729990

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Registry record

Entity type Individual (Type 1)
Name Mr. Tristram Heyward Dashti-Gibson
Credential LCMHC
Sex Male
Practice address 539 Islington St Ste 4, Portsmouth, NH, 03801
Phone (603) 689-7890
Fax (603) 883-0007
Enumeration date Dec 26, 2006
Last updated in NPPES Dec 4, 2024

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License CC3922 (ME) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 993 (NH) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Tristram Dashti-Gibson?
The National Provider Identifier (NPI) for Tristram Dashti-Gibson is 1588729990, a Type 1 (individual) record in the CMS NPPES registry.
Where does Tristram Dashti-Gibson practice?
The practice location on file with NPPES is in Portsmouth, NH. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-04.