Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Willet B Neff, DC
Chiropractor in Willow Grove, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578599700
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Registry record
Entity type Individual (Type 1)
Name Dr. Willet B Neff
Credential DC
Sex Male
Practice address 608 Easton Rd, Suite B, Willow Grove, PA, 19090
Phone (215) 657-8081
Fax (215) 659-8083
Enumeration date Jun 22, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0090421000 | Other | PA | BLUE CROSS |
| 0707797 | Other | PA | AETNA |
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.
Frequently asked questions
How do I verify Willet Neff's NPI record?
Cross-check NPI 1578599700 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1578599700 active?
Yes, as of the latest NPPES snapshot, NPI 1578599700 is active (record last updated 2007-07-08).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.