Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher A Silag, PHARM.D., BCPS

Pharmacist in Fairfield, CA · enumerated 2012.

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

National Provider Identifier

1407105372

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Registry record

Entity type Individual (Type 1)

Name Christopher A Silag

Credential PHARM.D., BCPS

Sex Male

Practice address 1200 B Gale Wilson Blvd, Fairfield, CA, 94533

Phone (707) 646-5000

Enumeration date Sep 6, 2012

Last updated in NPPES Aug 14, 2015

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 68019 (CA) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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

What is the NPI number for Christopher Silag?

The National Provider Identifier (NPI) for Christopher Silag is 1407105372, a Type 1 (individual) record in the CMS NPPES registry.

Where does Christopher Silag practice?

The practice location on file with NPPES is in Fairfield, CA. 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 2015-08-14.