NPI Portal NPI Lookup & Verification

Dr. William Ray Flook, DC

Dr. William Ray Flook is a Chiropractor provider (Chiropractor) practicing in Berwick, PA, registered in the NPPES registry with NPI 1154382257 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1154382257
Entity type Individual (Type 1)
Name Dr. William Ray Flook
Credential DC
Sex Male
Practice address Berwick, PA, 18603
Phone 5707522989
Fax 5707590646
Enumeration date 2006-03-29
Last updated in NPPES 2010-08-11

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary DC001333L PA

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details
Provider: William Flook, DC
NPI: 1154382257
Taxonomy: 111N00000X (Chiropractor)
Address: Berwick, PA, 18603

Verify this record

Cross-check NPI 1154382257 against the authoritative CMS record: view Dr. William Ray Flook on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.
What specialty is William Flook?
William Flook is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-08-11.