Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Xavier Manuel Mountain, ACSW

Clinical Social Worker in Concord, CA · enumerated 2020 · practices at Mountain Valley Child and Family Services, Inc..

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

National Provider Identifier

1881229904

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Registry record

Entity type Individual (Type 1)

Name Mr. Xavier Manuel Mountain

Credential ACSW

Sex Male

Practice address 1848 Willow Pass Rd Ste 207, Concord, CA, 94520

Phone (916) 362-8292

Enumeration date Mar 9, 2020

Last updated in NPPES Apr 30, 2021

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License ACSW93178 (CA) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License ACSW93178 (CA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License ACSW93178 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License ACSW93178 (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.

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Frequently asked questions

How do I verify Xavier Mountain's NPI record?

Cross-check NPI 1881229904 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1881229904 active?

Yes, as of the latest NPPES snapshot, NPI 1881229904 is active (record last updated 2021-04-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-30.