Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Tremayne Group Chiropractic, Inc.

Q: What is the NPI number for Tremayne Group Chiropractic, Inc.?

The NPI for Tremayne Group Chiropractic, Inc. is 1255635108, a Type 2 (organization) record in the CMS NPPES registry.

Primary Care Clinic/Center in Mill Valley, CA · enumerated 2011 · authorized official Ian Davis-Tremayne, President/Doctor.

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

National Provider Identifier

1255635108

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Registry record

Entity type Organization (Type 2)

Legal business name Tremayne Group Chiropractic, Inc.

Practice address 433 Miller Ave Ste A, Mill Valley, CA, 94941

Phone (415) 383-0904

Enumeration date Jan 7, 2011

Last updated in NPPES Jan 7, 2011

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities · License DC 31152 (CA) Primary

Authorized official

Name Ian Davis-Tremayne

Title President/Doctor

Phone (415) 383-0904

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 Tremayne Group Chiropractic, Inc.?

The NPI for Tremayne Group Chiropractic, Inc. is 1255635108, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Tremayne Group Chiropractic, Inc.?

NPPES lists Ian Davis-Tremayne (President/Doctor) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-07.