Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. James Warren, M.F.T.I.

Q: What is the NPI number for James Warren?

The National Provider Identifier (NPI) for James Warren is 1073722609, a Type 1 (individual) record in the CMS NPPES registry.

Marriage & Family Therapist in San Rafael, CA · enumerated 2007 · practices at Marin Treatment Center.

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

National Provider Identifier

1073722609

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. James Warren

Credential M.F.T.I.

Sex Male

Practice address 1466 Lincoln Ave, San Rafael, CA, 94901

Phone (415) 457-3755

Enumeration date May 21, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License IMF50635 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does James Warren practice?

The practice location on file with NPPES is in San Rafael, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for James Warren?

The National Provider Identifier (NPI) for James Warren is 1073722609, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.