Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Walden House Inc

Substance Abuse Rehabilitation Facility in San Francisco, CA · enumerated 2010 · authorized official Tyrone Evans, Mental Health Caremanager.

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

National Provider Identifier

1407166416

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Registry record

Entity type Organization (Type 2)

Legal business name Walden House Inc

Other name <Unavail>

Practice address 890 Hayes St, San Francisco, CA, 94117

Phone (415) 701-5100

Fax (415) 621-1033

Enumeration date Oct 13, 2010

Last updated in NPPES Oct 13, 2010

Taxonomy & classification

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities Primary

Authorized official

Name Tyrone Evans

Title Mental Health Caremanager

Phone (415) 701-5100

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 is Walden House Inc located?

The practice location on file with NPPES is in San Francisco, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-10-13. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-13.