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Phillip Adrian Walker II, D.O.

Critical Care Medicine (Internal Medicine) Physician in Clarion, PA · enumerated 2005.

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

National Provider Identifier

1154316164

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Registry record

Entity type Individual (Type 1)
Name Phillip Adrian Walker II
Credential D.O.
Sex Male
Practice address 420 Wood St, Clarion, PA, 16214
Phone (814) 226-7722
Fax (814) 227-2390
Enumeration date Sep 15, 2005
Last updated in NPPES Mar 21, 2011

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License OS-006335E (PA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
0010935320002 Medicaid PA -

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 specialty is Phillip Walker?
Phillip Walker is registered in NPPES with the primary taxonomy of Critical Care Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-21.