Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Philip William Blair, MD

Q: What is the NPI number for Philip Blair?

The National Provider Identifier (NPI) for Philip Blair is 1114187978, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Castle Rock, WA · enumerated 2008.

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

National Provider Identifier

1114187978

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Registry record

Entity type Individual (Type 1)

Name Dr. Philip William Blair

Credential MD

Sex Male

Practice address Castle Rock, WA, 98611

Phone (360) 635-0126

Enumeration date Jun 13, 2008

Last updated in NPPES Jan 14, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD00034198 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Philip Blair?

The National Provider Identifier (NPI) for Philip Blair is 1114187978, a Type 1 (individual) record in the CMS NPPES registry.

Where does Philip Blair practice?

The practice location on file with NPPES is in Castle Rock, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-14.